Dual-spark ignition

Double spark plug ignition system is in the hemispherical combustion chamber on both sides of the symmetrical arrangement of two spark plugs of the same type, the two spark plugs and the combustion chamber centre distance is equal, the engine idle or low-speed operation is still using a single spark plug ignition.

After normal operation, two spark plugs ignition at the same time, not only the flame propagation distance is shortened by half, and two spark plugs at the same time on fire explosion combustion, rapid formation of a stronger vortex, significantly accelerates the flame propagation speed. Also known as "double spark plug ignition rapid combustion method".