What is the ignition advance angle?

1 Answers
VonVivienne
07/29/25 8:45pm
The normal range for the ignition advance angle is between 6° and 12°. Below is an introduction to the ignition advance angle: Definition of ignition advance angle: During engine operation, the timing of ignition significantly impacts engine performance. Ignition advance refers to the spark plug firing before the piston reaches the top dead center (TDC) of the compression stroke, igniting the combustible mixture in the combustion chamber. The angle through which the crankshaft rotates from the moment of ignition until the piston reaches TDC is called the ignition advance angle. Disadvantages of excessive ignition advance: Can cause knocking; obstructs piston upward movement; reduces efficiency; increases thermal load, mechanical load, noise, and vibration.
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