The pulsating effect of automobile intake system
In addition to the engine in the very low speed, the pressure into the steam before the steam will continue to change during the steam, which is due to the steam valve opening and closing action, making the intake manifold to produce a compressed wave to the speed of sound Size fluctuation. If the length of the steam intake manifold is designed correctly, the compressed wave will reach the intake valve at the appropriate time. The oil and gas can enter the cylinder by its own fluctuation, improve the volumetric efficiency of the engine, and vice versa. Phenomenon known as the intake manifold pulsation effect, also known as 'co-shock effect'.
