Diagram the tongue of the gasoline engine 4 rhythm
.From the speed of the engine to make packing smoke have short time to flow in through the intake valve. The intake valve has to turn faster before top dead center and closed down after bottom dead center to the intake valve is เวลาเปิด longer.300 degrees of crank shaft Number of degrees before top dead center or after bottom dead center there will be many or less, depending on the design of the speed of the engine!
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