Wasted spark system

The wasted spark system is a type of ignition system commonly used in internal combustion engines, particularly those with four-stroke cycles. It is designed to improve efficiency and performance by optimizing the timing and firing of spark plugs. In a wasted spark ignition system, each pair of cylinders (often from a V-type or inline engine) shares a single ignition coil. When the ignition coil is energized, it produces a spark that fires both spark plugs in the pair at the same time.