The electronics in the ignition coil and the powertrain control module in a compression-sensing ignition system can detect which of the two companion (paired) cylinders require higher voltage, which indicates the cylinder that's   a. on the power stroke.   b. at zero degrees BDC (bottom dead center).   c. on the compression stroke.   d. at zero degrees TDC (top dead center).  

Social Studies · High School · Thu Feb 04 2021

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In a compression-sensing ignition system, the electronics in the ignition coil and the powertrain control module can detect the companion cylinders that require higher voltage, indicating the cylinder that's on the compression stroke. Therefore, the correct answer is:

c.) on the compression stroke.