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Ignition magneto - Wikipedia

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id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Part of an engine's ignition system</div> <p class="mw-empty-elt"> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Magneto_components.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Magneto_components.png/220px-Magneto_components.png" decoding="async" width="220" height="162" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Magneto_components.png/330px-Magneto_components.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Magneto_components.png/440px-Magneto_components.png 2x" data-file-width="650" data-file-height="480" /></a><figcaption>Magneto components.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Impulse_Coupling_components.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Impulse_Coupling_components.png/220px-Impulse_Coupling_components.png" decoding="async" width="220" height="468" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Impulse_Coupling_components.png/330px-Impulse_Coupling_components.png 1.5x, //upload.wikimedia.org/wikipedia/commons/e/e0/Impulse_Coupling_components.png 2x" data-file-width="350" data-file-height="744" /></a><figcaption>Impulse coupling components.</figcaption></figure> <p>An <b>ignition magneto</b> (also called a <b>high-tension magneto</b>) is an older type of <a href="/wiki/Ignition_system" title="Ignition system">ignition system</a> used in <a href="/wiki/Spark-ignition_engine" title="Spark-ignition engine">spark-ignition engines</a> (such as petrol engines). It uses a <a href="/wiki/Magneto" title="Magneto">magneto</a> and a <a href="/wiki/Transformer" title="Transformer">transformer</a> to make pulses of high voltage for the <a href="/wiki/Spark_plug" title="Spark plug">spark plugs</a>. The older term "high-tension" means "high-<a href="/wiki/Voltage" title="Voltage">voltage</a>".<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">&#91;</span>1<span class="cite-bracket">&#93;</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Design">Design</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ignition_magneto&amp;action=edit&amp;section=1" title="Edit section: Design"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A simple <a href="/wiki/Magneto" title="Magneto">magneto</a> (an electrical generator using permanent magnets) is able to produce relatively low <a href="/wiki/Voltage" title="Voltage">voltage</a> electricity, however it is unable to produce the high voltages required by a <a href="/wiki/Spark_plug" title="Spark plug">spark plug</a> as used in most modern engines (aside from <a href="/wiki/Diesel_engine" title="Diesel engine">diesel engines</a>).<sup id="cite_ref-Cauldwell,_1941,_88_2-0" class="reference"><a href="#cite_note-Cauldwell,_1941,_88-2"><span class="cite-bracket">&#91;</span>2<span class="cite-bracket">&#93;</span></a></sup> An <i>ignition magneto</i> also includes an electrical <a href="/wiki/Transformer" title="Transformer">transformer</a>,<sup id="cite_ref-Cauldwell,_1941,_88_2-1" class="reference"><a href="#cite_note-Cauldwell,_1941,_88-2"><span class="cite-bracket">&#91;</span>2<span class="cite-bracket">&#93;</span></a></sup> which converts the electricity to a higher voltage (with the trade-off being a corresponding reduction in the output <a href="/wiki/Electric_current" title="Electric current">current</a>).<sup id="cite_ref-Cauldwell,_1941,_88_2-2" class="reference"><a href="#cite_note-Cauldwell,_1941,_88-2"><span class="cite-bracket">&#91;</span>2<span class="cite-bracket">&#93;</span></a></sup> </p><p>As the points begin to open, point spacing is initially such that the voltage across the primary coil would arc across the points. A <a href="/wiki/Capacitor" title="Capacitor">capacitor</a> is placed across the points which absorbs the energy stored in the <a href="/wiki/Leakage_inductance" title="Leakage inductance">leakage inductance</a> of the primary coil, and slows the rise time of the primary winding voltage to allow the points to open fully.<sup id="cite_ref-continentalmotors_3-0" class="reference"><a href="#cite_note-continentalmotors-3"><span class="cite-bracket">&#91;</span>3<span class="cite-bracket">&#93;</span></a></sup> </p><p>A second coil, with many more turns than the primary, is wound on the same iron core to form an electrical <a href="/wiki/Transformer" title="Transformer">transformer</a>. The ratio of turns in the secondary winding to the number of turns in the primary winding, is called the <i>turns ratio</i>. Voltage across the primary coil results in a proportional voltage being induced across the secondary winding of the coil. The turns ratio between the primary and secondary coil is selected so that the voltage across the secondary reaches a very high value, enough to arc across the gap of the spark plug. As the voltage of the primary winding rises to several hundred volts,<sup id="cite_ref-continentalmotors_3-1" class="reference"><a href="#cite_note-continentalmotors-3"><span class="cite-bracket">&#91;</span>3<span class="cite-bracket">&#93;</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">&#91;</span>4<span class="cite-bracket">&#93;</span></a></sup> the voltage on the secondary winding rises to several tens of thousands of volts, since the secondary winding typically has 100 times as many turns as the primary winding.<sup id="cite_ref-continentalmotors_3-2" class="reference"><a href="#cite_note-continentalmotors-3"><span class="cite-bracket">&#91;</span>3<span class="cite-bracket">&#93;</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Impulse_coupling,_induction_vibrator,_and_booster_coil"><span id="Impulse_coupling.2C_induction_vibrator.2C_and_booster_coil"></span>Impulse coupling, induction vibrator, and booster coil</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ignition_magneto&amp;action=edit&amp;section=2" title="Edit section: Impulse coupling, induction vibrator, and booster coil"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1237032888/mw-parser-output/.tmulti">.mw-parser-output .tmulti .multiimageinner{display:flex;flex-direction:column}.mw-parser-output .tmulti .trow{display:flex;flex-direction:row;clear:left;flex-wrap:wrap;width:100%;box-sizing:border-box}.mw-parser-output .tmulti .tsingle{margin:1px;float:left}.mw-parser-output .tmulti .theader{clear:both;font-weight:bold;text-align:center;align-self:center;background-color:transparent;width:100%}.mw-parser-output .tmulti .thumbcaption{background-color:transparent}.mw-parser-output .tmulti .text-align-left{text-align:left}.mw-parser-output .tmulti .text-align-right{text-align:right}.mw-parser-output .tmulti .text-align-center{text-align:center}@media all and (max-width:720px){.mw-parser-output .tmulti .thumbinner{width:100%!important;box-sizing:border-box;max-width:none!important;align-items:center}.mw-parser-output .tmulti .trow{justify-content:center}.mw-parser-output .tmulti .tsingle{float:none!important;max-width:100%!important;box-sizing:border-box;text-align:center}.mw-parser-output .tmulti .tsingle .thumbcaption{text-align:left}.mw-parser-output .tmulti .trow>.thumbcaption{text-align:center}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmulti .multiimageinner img{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmulti .multiimageinner img{background-color:white}}</style><div class="thumb tmulti tright"><div class="thumbinner multiimageinner" style="width:432px;max-width:432px"><div class="trow"><div class="tsingle" style="width:199px;max-width:199px"><div class="thumbimage" style="height:118px;overflow:hidden"><span typeof="mw:File"><a href="/wiki/File:Induction_Vibrator_schematic.png" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Induction_Vibrator_schematic.png/197px-Induction_Vibrator_schematic.png" decoding="async" width="197" height="118" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Induction_Vibrator_schematic.png/296px-Induction_Vibrator_schematic.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/04/Induction_Vibrator_schematic.png/394px-Induction_Vibrator_schematic.png 2x" data-file-width="973" data-file-height="585" /></a></span></div></div><div class="tsingle" style="width:229px;max-width:229px"><div class="thumbimage" style="height:118px;overflow:hidden"><span typeof="mw:File"><a href="/wiki/File:Booster_Coil_components.png" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Booster_Coil_components.png/227px-Booster_Coil_components.png" decoding="async" width="227" height="118" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Booster_Coil_components.png/341px-Booster_Coil_components.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Booster_Coil_components.png/454px-Booster_Coil_components.png 2x" data-file-width="812" data-file-height="422" /></a></span></div></div></div><div class="trow" style="display:flex"><div class="thumbcaption">(Left) In a vibrator coil, points open and close rapidly, creating pulsating DC, or interrupted battery current. Electrical current flows from the battery through R1, vibrator points V1, and coil L2. The energized coil L2 opens vibrator points V1, interrupting the current flow through L2. The magnetic field about L2 collapses, and vibrator points V1 close again. Once more, current flows through L2, and again V1 vibrator points open. This process is repeated continuously, creating a "shower of sparks." (Right) Booster coil components. The booster coil is separate from the magneto and can generate a series of sparks on its own. Current flow through the primary coil sets up a magnetic field about the coil that attracts the movable contact point, breaking circuit is broken. The movable contact point then moves back to the stationary contact point via a spring. This sets up the current flow once again in a repetitive process.</div></div></div></div> <p>Because the magneto has low voltage output at low speed, starting an engine is more difficult.<sup id="cite_ref-Kroes,_1995_5-0" class="reference"><a href="#cite_note-Kroes,_1995-5"><span class="cite-bracket">&#91;</span>5<span class="cite-bracket">&#93;</span></a></sup> Therefore, some magnetos have an impulse coupling, a spring-like mechanical linkage between the engine and magneto drive shaft which "winds up" and "lets go" at the proper moment for spinning the magneto shaft. The impulse coupling uses a spring, a hub cam with flyweights, and a shell.<sup id="cite_ref-Kroes,_1995_5-1" class="reference"><a href="#cite_note-Kroes,_1995-5"><span class="cite-bracket">&#91;</span>5<span class="cite-bracket">&#93;</span></a></sup> The hub of the magneto rotates while the drive shaft is held stationary, and the spring tension builds up. When the magneto is supposed to fire, the flyweights are released by the action of the body contacting the trigger ramp. This allows the spring to unwind giving the rotating magnet a rapid rotation and letting the magneto spin at such a speed to produce a spark.<sup id="cite_ref-Kroes,_1995_5-2" class="reference"><a href="#cite_note-Kroes,_1995-5"><span class="cite-bracket">&#91;</span>5<span class="cite-bracket">&#93;</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ignition_magneto&amp;action=edit&amp;section=3" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In the late 1890s, English engineer <a href="/wiki/Frederick_Richard_Simms" title="Frederick Richard Simms">Frederick Richard Simms</a> collaborated with the German engineer <a href="/wiki/Robert_Bosch" title="Robert Bosch">Robert Bosch</a>, and his staff of Arnold Zähringer, Young Rall, and Gottlob Honold, in developing the first practical high-tension magneto. In 1900, the Bosch magneto ignition was used in the <a href="/wiki/Gottlieb_Daimler" title="Gottlieb Daimler">Gottlieb Daimler</a> engines on the <a href="/wiki/Zeppelin" title="Zeppelin">Zeppelin</a>.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">&#91;</span>6<span class="cite-bracket">&#93;</span></a></sup><sup id="cite_ref-rb_7-0" class="reference"><a href="#cite_note-rb-7"><span class="cite-bracket">&#91;</span>7<span class="cite-bracket">&#93;</span></a></sup> </p><p>The first car to use magneto ignition was the 1901 German <a href="/wiki/Mercedes_35_hp" title="Mercedes 35 hp">Mercedes 35 hp</a> racing car, followed by various cars produced by <a href="/wiki/Benz_%26_Cie." class="mw-redirect" title="Benz &amp; Cie.">Benz</a>, <a href="/wiki/Mors_(automobile)" title="Mors (automobile)">Mors</a>, <a href="/wiki/Turcat-Mery" class="mw-redirect" title="Turcat-Mery">Turcat-Mery</a>, and <a href="/wiki/Nesseldorf" class="mw-redirect" title="Nesseldorf">Nesseldorf</a>.<sup id="cite_ref-Georgano,_1985_8-0" class="reference"><a href="#cite_note-Georgano,_1985-8"><span class="cite-bracket">&#91;</span>8<span class="cite-bracket">&#93;</span></a></sup> Ignition magnetos were soon used on most cars, for both low voltage systems (which used secondary coils to fire the spark plugs) and high voltage magnetos (which fired the spark plug directly, similar to <a href="/wiki/Induction_coil" title="Induction coil">induction coil</a> ignition).<sup id="cite_ref-Georgano,_1985_8-1" class="reference"><a href="#cite_note-Georgano,_1985-8"><span class="cite-bracket">&#91;</span>8<span class="cite-bracket">&#93;</span></a></sup> Ignition magnetos were largely replaced by <a href="/wiki/Ignition_coil" title="Ignition coil">ignition coils</a> once batteries became common in cars, since a battery-operated coil can provide a high-voltage spark even at low speeds, making starting easier.<sup id="cite_ref-VAWH96_9-0" class="reference"><a href="#cite_note-VAWH96-9"><span class="cite-bracket">&#91;</span>9<span class="cite-bracket">&#93;</span></a></sup> </p> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237032888/mw-parser-output/.tmulti"><div class="thumb tmulti tright"><div class="thumbinner multiimageinner" style="width:432px;max-width:432px"><div class="trow"><div class="tsingle" style="width:229px;max-width:229px"><div class="thumbimage" style="height:132px;overflow:hidden"><span typeof="mw:File"><a href="/wiki/File:Ignition_System_schematic.png" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/Ignition_System_schematic.png/227px-Ignition_System_schematic.png" decoding="async" width="227" height="132" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/Ignition_System_schematic.png/341px-Ignition_System_schematic.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/13/Ignition_System_schematic.png/454px-Ignition_System_schematic.png 2x" data-file-width="815" data-file-height="474" /></a></span></div></div><div class="tsingle" style="width:199px;max-width:199px"><div class="thumbimage" style="height:132px;overflow:hidden"><span typeof="mw:File"><a href="/wiki/File:Bosch_magneto_circuit_(Army_Service_Corps_Training,_Mechanical_Transport,_1911).jpg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Bosch_magneto_circuit_%28Army_Service_Corps_Training%2C_Mechanical_Transport%2C_1911%29.jpg/197px-Bosch_magneto_circuit_%28Army_Service_Corps_Training%2C_Mechanical_Transport%2C_1911%29.jpg" decoding="async" width="197" height="132" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Bosch_magneto_circuit_%28Army_Service_Corps_Training%2C_Mechanical_Transport%2C_1911%29.jpg/296px-Bosch_magneto_circuit_%28Army_Service_Corps_Training%2C_Mechanical_Transport%2C_1911%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Bosch_magneto_circuit_%28Army_Service_Corps_Training%2C_Mechanical_Transport%2C_1911%29.jpg/394px-Bosch_magneto_circuit_%28Army_Service_Corps_Training%2C_Mechanical_Transport%2C_1911%29.jpg 2x" data-file-width="812" data-file-height="546" /></a></span></div></div></div><div class="trow" style="display:flex"><div class="thumbcaption">(Left) Aircraft dual ignition system with two individual magnetos, separate sets of wires, and spark plugs, increases reliability. (Right) Bosch magneto circuit diagram from 1911.</div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ignition_magneto&amp;action=edit&amp;section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Magnetos_(ignition)" class="extiw" title="commons:Category:Magnetos (ignition)">Magnetos (ignition)</a></span>.</div></div> </div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFBottone1907" class="citation book cs1">Bottone, Selimo Romeo (1907). <a rel="nofollow" class="external text" href="https://archive.org/details/magnetosforauto01bottgoog"><i>Magnetos for Automobilists, how Made and how Used: A Handbook of Practical Instruction in the Manufacture and Adaptation of the Magneto to the Needs of the Motorist</i></a>. C. Lockwood and son.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Magnetos+for+Automobilists%2C+how+Made+and+how+Used%3A+A+Handbook+of+Practical+Instruction+in+the+Manufacture+and+Adaptation+of+the+Magneto+to+the+Needs+of+the+Motorist&amp;rft.pub=C.+Lockwood+and+son&amp;rft.date=1907&amp;rft.aulast=Bottone&amp;rft.aufirst=Selimo+Romeo&amp;rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fmagnetosforauto01bottgoog&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AIgnition+magneto" class="Z3988"></span></span> </li> <li id="cite_note-Cauldwell,_1941,_88-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-Cauldwell,_1941,_88_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Cauldwell,_1941,_88_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Cauldwell,_1941,_88_2-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCauldwell1941" class="citation book cs1">Cauldwell, O. (1941). <i>Aero Engines: for Pilots and Ground Engineers</i>. 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Continental Ignition Systems. 31 August 2011. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20150918025733/http://www.continentalmotors.aero/WorkArea/DownloadAsset.aspx?id=2147483664">Archived</a> from the original on 18 September 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">21 June</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=unknown&amp;rft.btitle=The+Aircraft+Magneto&amp;rft.pub=Continental+Ignition+Systems&amp;rft.date=2011-08-31&amp;rft_id=http%3A%2F%2Fwww.continentalmotors.aero%2FWorkArea%2FDownloadAsset.aspx%3Fid%3D2147483664&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AIgnition+magneto" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.smokstak.com/articles/capacitors.html">"Capacitors in Ignition Systems"</a>. <i>www.smokstak.com</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170709061159/https://www.smokstak.com/articles/capacitors.html">Archived</a> from the original on 9 July 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">6 May</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=www.smokstak.com&amp;rft.atitle=Capacitors+in+Ignition+Systems&amp;rft_id=http%3A%2F%2Fwww.smokstak.com%2Farticles%2Fcapacitors.html&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AIgnition+magneto" class="Z3988"></span></span> </li> <li id="cite_note-Kroes,_1995-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-Kroes,_1995_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Kroes,_1995_5-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Kroes,_1995_5-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKroes1995" class="citation book cs1">Kroes, Michael (1995). <i>Aircraft Powerplants</i>. New York: Glencoe. p.&#160;180.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Aircraft+Powerplants&amp;rft.place=New+York&amp;rft.pages=180&amp;rft.pub=Glencoe&amp;rft.date=1995&amp;rft.aulast=Kroes&amp;rft.aufirst=Michael&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AIgnition+magneto" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKohli1993" class="citation book cs1">Kohli, P.L. (1993). <i>Automotive Electrical Equipment</i>. Tata McGraw-Hill. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a>&#160;<a href="/wiki/Special:BookSources/0-07-460216-0" title="Special:BookSources/0-07-460216-0"><bdi>0-07-460216-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Automotive+Electrical+Equipment&amp;rft.pub=Tata+McGraw-Hill&amp;rft.date=1993&amp;rft.isbn=0-07-460216-0&amp;rft.aulast=Kohli&amp;rft.aufirst=P.L.&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AIgnition+magneto" class="Z3988"></span></span> </li> <li id="cite_note-rb-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-rb_7-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHeuss1994" class="citation book cs1">Heuss, Theodor (1994). <i>Robert Bosch: His Life and Achievements</i>. New York: Henry Holt and Company. pp.&#160;102–107, 124–126. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a>&#160;<a href="/wiki/Special:BookSources/0805030670" title="Special:BookSources/0805030670"><bdi>0805030670</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Robert+Bosch%3A+His+Life+and+Achievements&amp;rft.place=New+York&amp;rft.pages=102-107%2C+124-126&amp;rft.pub=Henry+Holt+and+Company&amp;rft.date=1994&amp;rft.isbn=0805030670&amp;rft.aulast=Heuss&amp;rft.aufirst=Theodor&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AIgnition+magneto" class="Z3988"></span></span> </li> <li id="cite_note-Georgano,_1985-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-Georgano,_1985_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Georgano,_1985_8-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGeorgano1985" class="citation book cs1"><a href="/wiki/G.N._Georgano" class="mw-redirect" title="G.N. Georgano">Georgano, G.N.</a> (1985). <i>Cars: Early and Vintage, 1886-1930</i>. London: Grange-Universal.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Cars%3A+Early+and+Vintage%2C+1886-1930&amp;rft.place=London&amp;rft.pub=Grange-Universal&amp;rft.date=1985&amp;rft.aulast=Georgano&amp;rft.aufirst=G.N.&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AIgnition+magneto" class="Z3988"></span></span> </li> <li id="cite_note-VAWH96-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-VAWH96_9-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHillier1996" class="citation book cs1">Hillier, V. A. W. (1996). <i>Hillier's Fundamentals of Automotive Electronics</i>. Nelson Thornes. p.&#160;167. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a>&#160;<a href="/wiki/Special:BookSources/0-7487-2695-0" title="Special:BookSources/0-7487-2695-0"><bdi>0-7487-2695-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Hillier%27s+Fundamentals+of+Automotive+Electronics&amp;rft.pages=167&amp;rft.pub=Nelson+Thornes&amp;rft.date=1996&amp;rft.isbn=0-7487-2695-0&amp;rft.aulast=Hillier&amp;rft.aufirst=V.+A.+W.&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AIgnition+magneto" class="Z3988"></span></span> </li> </ol></div></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output 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/> rotating assembly</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Balance_shaft" title="Balance shaft">Balance shaft</a></li> <li><a href="/wiki/Block_heater" title="Block heater">Block heater</a></li> <li><a href="/wiki/Bore_(engine)" title="Bore (engine)">Bore</a></li> <li><a href="/wiki/Connecting_rod" title="Connecting rod">Connecting rod</a></li> <li><a href="/wiki/Crankcase" title="Crankcase">Crankcase</a></li> <li><a href="/wiki/Crankcase_ventilation_system" title="Crankcase ventilation system">Crankcase ventilation system (PCV valve)</a></li> <li><a href="/wiki/Crankpin" title="Crankpin">Crankpin</a></li> <li><a href="/wiki/Crankshaft" title="Crankshaft">Crankshaft</a></li> <li><a href="/wiki/Core_plug" title="Core plug">Core plug (freeze plug)</a></li> <li><a href="/wiki/Cylinder_(engine)" title="Cylinder (engine)">Cylinder</a> (<a href="/wiki/Cylinder_bank" class="mw-redirect" title="Cylinder bank">bank</a>, <a href="/wiki/Engine_configuration" title="Engine configuration">layout</a>)</li> <li><a href="/wiki/Engine_displacement" title="Engine displacement">Displacement</a></li> <li><a href="/wiki/Flywheel" title="Flywheel">Flywheel</a></li> <li><a href="/wiki/Firing_order" title="Firing order">Firing order</a></li> <li><a href="/wiki/Stroke_(engine)" title="Stroke (engine)">Stroke</a></li> <li><a href="/wiki/Main_bearing" title="Main bearing">Main bearing</a></li> <li><a href="/wiki/Piston" title="Piston">Piston</a></li> <li><a href="/wiki/Piston_ring" title="Piston ring">Piston ring</a></li> <li><a href="/wiki/Starter_ring_gear" title="Starter ring gear">Starter ring gear</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Valvetrain" title="Valvetrain">Valvetrain</a> and<br /> <a href="/wiki/Cylinder_head" title="Cylinder head">Cylinder head</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Flathead_engine" title="Flathead engine">Flathead layout</a></li> <li><a href="/wiki/Overhead_camshaft_engine" title="Overhead camshaft engine">Overhead camshaft layout</a></li> <li><a href="/wiki/Overhead_valve_engine" title="Overhead valve engine">Overhead valve (pushrod) layout</a></li></ul> <ul><li><a href="/wiki/Tappet" title="Tappet">Tappet / lifter</a></li> <li><a href="/wiki/Camshaft" title="Camshaft">Camshaft</a></li> <li><a href="/wiki/Chest_(mechanical_engineering)" title="Chest (mechanical engineering)">Chest</a></li> <li><a href="/wiki/Combustion_chamber" title="Combustion chamber">Combustion chamber</a></li> <li><a href="/wiki/Compression_ratio" title="Compression ratio">Compression ratio</a></li> <li><a href="/wiki/Head_gasket" title="Head gasket">Head gasket</a></li> <li><a href="/wiki/Rocker_arm" title="Rocker arm">Rocker arm</a></li> <li><a href="/wiki/Timing_belt_(camshaft)" title="Timing belt (camshaft)">Timing belt</a></li> <li><a href="/wiki/Poppet_valve" title="Poppet valve">Valve</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Forced_induction" title="Forced induction">Forced induction</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Blowoff_valve" title="Blowoff valve">Blowoff valve</a></li> <li><a href="/wiki/Boost_controller" title="Boost controller">Boost controller</a></li> <li><a href="/wiki/Intercooler" title="Intercooler">Intercooler</a></li> <li><a href="/wiki/Supercharger" title="Supercharger">Supercharger</a></li> <li><a href="/wiki/Turbocharger" title="Turbocharger">Turbocharger</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Fuel system</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diesel_engine" title="Diesel engine">Diesel engine</a></li> <li><a href="/wiki/Petrol_engine" title="Petrol engine">Petrol engine</a></li> <li><a href="/wiki/Carburetor" title="Carburetor">Carburetor</a></li> <li><a href="/wiki/Fuel_filter" title="Fuel filter">Fuel filter</a></li> <li><a href="/wiki/Fuel_injection" title="Fuel injection">Fuel injection</a></li> <li><a href="/wiki/Fuel_pump" title="Fuel pump">Fuel pump</a></li> <li><a href="/wiki/Fuel_tank" title="Fuel tank">Fuel tank</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ignition_system" title="Ignition system">Ignition</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Magneto</a></li> <li><a href="/wiki/Compression_ignition" class="mw-redirect" title="Compression ignition">Compression ignition</a></li> <li><a href="/wiki/Coil-on-plug_ignition" class="mw-redirect" title="Coil-on-plug ignition">Coil-on-plug</a></li> <li><a href="/wiki/Distributor" title="Distributor">Distributor</a></li> <li><a href="/wiki/Glow_plug_(diesel_engine)" class="mw-redirect" title="Glow plug (diesel engine)">Glow plug</a></li> <li><a href="/wiki/Ignition_coil" title="Ignition coil">Ignition coil</a></li> <li><a href="/wiki/Spark_plug" title="Spark plug">Spark plug</a></li> <li><a href="/wiki/Spark_plug_wires" title="Spark plug wires">Spark plug wires</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Engine management</div></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Engine_control_unit" title="Engine control unit">Engine control unit (ECU)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Electrical system</div></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alternator_(automotive)" title="Alternator (automotive)">Alternator</a></li> <li><a href="/wiki/Automotive_battery" title="Automotive battery">Battery</a></li> <li><a href="/wiki/Dynamo" title="Dynamo">Dynamo</a></li> <li><a href="/wiki/Starter_(engine)" title="Starter (engine)">Starter motor</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Intake system</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Airbox" title="Airbox">Airbox</a></li> <li><a href="/wiki/Air_filter#Internal_combustion_engine_air_filters" title="Air filter">Air filter</a></li> <li><a href="/wiki/Idle_air_control_actuator" title="Idle air control actuator">Idle air control actuator</a></li> <li><a href="/wiki/Inlet_manifold" title="Inlet manifold">Inlet manifold</a></li> <li><a href="/wiki/MAP_sensor" title="MAP sensor">MAP sensor</a></li> <li><a href="/wiki/Mass_flow_sensor" title="Mass flow sensor">MAF sensor</a></li> <li><a href="/wiki/Throttle" title="Throttle">Throttle</a></li> <li><a href="/wiki/Throttle_position_sensor" title="Throttle position sensor">Throttle position sensor</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Exhaust_system" title="Exhaust system">Exhaust system</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Catalytic_converter" title="Catalytic converter">Catalytic converter</a></li> <li><a href="/wiki/Diesel_particulate_filter" title="Diesel particulate filter">Diesel particulate filter</a></li> <li><a href="/wiki/Exhaust_gas_temperature_gauge" title="Exhaust gas temperature gauge">EGT sensor</a></li> <li><a href="/wiki/Exhaust_manifold" title="Exhaust manifold">Exhaust manifold</a></li> <li><a href="/wiki/Muffler" title="Muffler">Muffler</a></li> <li><a href="/wiki/Oxygen_sensor#Automotive_applications" title="Oxygen sensor">Oxygen sensor</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Internal_combustion_engine_cooling" title="Internal combustion engine cooling">Cooling system</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Air_cooling" title="Air cooling">Air cooling</a></li> <li><a href="/wiki/Water_cooling" title="Water cooling">Water cooling</a></li></ul> <ul><li><a href="/wiki/Fan_(machine)" title="Fan (machine)">Electric fan</a></li> <li><a href="/wiki/Radiator_(engine_cooling)" title="Radiator (engine cooling)">Radiator</a></li> <li><a href="/wiki/Thermostat" title="Thermostat">Thermostat</a></li> <li><a href="/wiki/Fan_clutch" title="Fan clutch">Viscous fan (fan clutch)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lubrication</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Motor_oil" title="Motor oil">Oil</a></li> <li><a href="/wiki/Oil_filter" title="Oil filter">Oil filter</a></li> <li><a href="/wiki/Oil_pump_(internal_combustion_engine)" title="Oil pump (internal combustion engine)">Oil pump</a></li> <li><a href="/wiki/Sump" title="Sump">Sump</a> (<a href="/wiki/Wet_sump" title="Wet sump">Wet sump</a>, <a href="/wiki/Dry_sump" title="Dry sump">Dry sump</a>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Engine_knocking" title="Engine knocking">Knocking / pinging</a></li> <li><a href="/wiki/Power_band" title="Power band">Power band</a></li> <li><a href="/wiki/Redline" title="Redline">Redline</a></li> <li><a href="/wiki/Stratified_charge_engine" title="Stratified charge engine">Stratified charge</a></li> <li><a href="/wiki/Dead_centre_(engineering)" title="Dead centre (engineering)">Top dead centre</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow hlist" colspan="2" style="font-weight:bold;"><div> <ul><li><a href="/wiki/Portal:Cars" title="Portal:Cars">Portal</a></li> <li><a href="/wiki/Category:Cars" title="Category:Cars">Category</a></li></ul> </div></td></tr></tbody></table></div> <!-- NewPP limit report Parsed by mw‐web.codfw.main‐f69cdc8f6‐9vzgv Cached time: 20241122140824 Cache expiry: 2592000 Reduced expiry: false 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