After the motor at high speed period, four stroke motors a work just a couple of seconds to a stroke, such a brief time frequently can lead to insufficient the engine intake and exhaust do not net, affect the engine efficiency.
For that reason, it requires throughout the valve early late or on closed, to compensate for inadequate intake and exhaust do not web be brief of sorrow.
Valve overlap Angle of motor performance often produced great sway, therefore this Angle much speed ought to be used?
We all know, engine speed is large, every cylinder a function cycle to breathe and exhaust at the complete time can also be more brief, so to attain increased efficiency of the atmosphere, they will need to expand engine breathe and exhaust period. Cummins performance parts are usually used for performance improvement.
But in low rate conditions, an excessive amount of congestion overlap Angle will create waste a lot of spilled to the inlet end, breathe volume may decrease, airflow will disease, now the ECU will even is tough to air/fuel ratio for precise control, resulting in the excruciating instability, low speed torque reduced.
Hence that the engine layout can select a compromise program cannot be in two quite different conditions would be to attain optimum condition.
So figure out this issue, demands with gasoline phase can based on the motor speed and various work requirements on the alteration, low and high rate may be the perfect into, exhaust efficacy, and this can be variable valve timing technologies advancement that the initial intention.