Practical Examples of 'wasted Spark'
This system has been widely used, including such engines as the Buick V6 engine 3800 LN3 and newer, Harley Davidson V-Twin, air-cooled BMW Motorcycles, 1948 Citroën 2CV, Mazda B engine, Chrysler V10, PSA TU Engines, Volkswagen Mark 3 2.8 VR6 (other than 2.0 ), Saturn Corporation 4 cylinders, and Chrysler 1.8, 2.0 & 2.4 engines. Some Ford engines also do. Many Honda and Kawasaki motorcycle and PWC engines also follow a similar design, to allow for a smaller number of more powerful coils to replace a larger number of smaller coils in the same limited space.
In practical use, a V-6 engine would only need three coil packs instead of six. Each individual coil fires the spark plugs in two cylinders simultaneously, the spark plug in one cylinder on a compression stroke where the power comes from, and the spark plug in the other cylinder on an exhaust stroke.
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