Spark Plug I am doing a report on spark plugs. Spark plugs have become a very big part in life today. With out them we probably would not be where we are today. The spark plug was invented early on by a French citizen born in Luxemburg. He was named Etienne Lenoir. In 1860 he manufactured an engine which used an electric spark ignition system. At this time in history many inventors and people were tired …showed first 75 words of 750 total…

…showed last 75 words of 750 total…could be some changes in material for the ceramic insert or different kinds of metals for the electrode. Another recent change has been the length of the core nose. The advantage of a long core nose is that it will run hotter at low engine speeds but be cooled off by the gas/air mixture. The spark plug over all is an essential part for running a gasoline engine. It won't run with out one!