Restriction of speed
Our engines maintain quite high frequencies of turns. Valves are set in motion by means of the tarelochny pushers which are directly located over distributive shaft. At the same time the insignificant mass of metal is set in motion that does not constitute danger to the drive of valves.
This restriction is partial function of injection which with too high frequency of rotation of the engine stops further increase in turns by fuel interruption in supply. If you are surprised by interruptions in operation of the engine on high turns, then it is not defect, but the built-in self-defense of the engine. Speed border in Audi for various engines different:
- Four-cylinder two-valve engine: 6500 rpm.
- Four-cylinder five-valve engine: 6800 rpm.
- Six-cylinder engine: 6200 rpm.
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