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Is It Better To Have More Valves On The Engine Cylinder?

Jan. 06, 2020

Power modification has always occupied a relatively important position in the modification culture, so when we upgrade the power system, it is best to master some engine-related knowledge to avoid being deceived by unscrupulous merchants during the modification. Intake exhaust valve supplier shares with you.

In fact, the number of valves per cylinder of the engine has two and three valves and four and five valves. Valves refer to the intake and exhaust valves of a cylinder. The intake valve is connected to the intake manifold and is the inlet for the engine to suck in the fresh air; the exhaust valve is directly connected to the exhaust manifold and is the outlet for the exhaust gas emitted by the engine.

 Bimetal Intake Exhaust Valve

I believe many friends know the principle of the intake and exhaust system. The efficiency of the intake and exhaust is also one of the important factors that determine the performance of the engine. When the engine is running normally, the reciprocating speed of the piston is very fast. At 3000 pm, the engine The time to complete each intake or exhaust stroke is only 0.04 seconds, so if you want to inhale or exhaust more gas in a short time, you need to increase the effective area of intake and exhaust. So the engine uses multi-valve technology.

Nowadays, as people have higher and higher requirements for the performance of engines, exhaust emission regulations have become increasingly strict. The structure of 2 valves per cylinder (1 intake valve and 1 exhaust valve) has become somewhat outdated. Most engines now use The structure of 3 valves per cylinder is 2 intake valves and 1 exhaust valve, and the structure of 4 valves per cylinder, that is, 2 intake valves and 2 exhaust valves; and some sports car companies have already Began to adopt a structure of 5 valves per cylinder (3 intake valves and 2 exhaust valves).

However, the number of valves is not the more the better. 5 valves can indeed improve the efficiency of the air intake, but the structure is extremely complicated and the processing is difficult, so it is rarely used in automobile engines.

Our company provides a bimetal intake exhaust valve.