<P> Compression ignition Diesel engines ignite the fuel - air mixture by the heat of compression and do not need a spark . They usually have glowplugs that preheat the combustion chamber to allow starting in cold weather . Other engines may use a flame , or a heated tube , for ignition . While this was common for very early engines it is now rare . </P>
<P> Compression ignition Diesel engines ignite the fuel - air mixture by the heat of compression and do not need a spark . They usually have glowplugs that preheat the combustion chamber to allow starting in cold weather . Other engines may use a flame , or a heated tube , for ignition . While this was common for very early engines it is now rare . </P>
what electric generator produced the spark for early car engines
what electric generator produced the spark for early car engines
a flame , or a heated tube
a flame , or a heated tube