Alternating ignition angle before TDC

摘要

The invention relates to methods and means of regulating the speed of a two-stroke combustion engine. An arrangement for alternating an ignition timing relative to a top dead center position is provided. For a given engine speed, the ignition timing may be step-wise adjustable. One or more steps may be used while alternating between two ignition timings. The ignition timing may be adjusted when the engine speed increases above a threshold engine speed.

主权项

1. An arrangement for regulating a speed of a two-stroke combustion engine comprising:
means for alternating an ignition timing relative to a top dead center position of the two-stroke combustion engine; wherein the means for alternating the ignition timing is provided to control the ignition timing such that the ignition timing is step-wise adjustable in response to an engine speed, and wherein the ignition timing is step-wise retarded in two or more steps, when the engine speed is higher than a threshold engine speed.