The vvt valve was damaged, and some faults and phenomena occurred.

Vvt valve is an engine variable timing valve. If there is a fault, there will be phenomena such as weak acceleration, reporting fault code and increasing fuel consumption, which will lead to failure to start.

Variable timing valve VVT system adjusts the phase of engine cam through the equipped control and execution system, so that the opening and closing time of the valve changes with the change of engine speed, thus improving the charging efficiency and increasing the engine power.

VVT is a device to control the valve timing of intake camshaft, which is optimized by adjusting the valve timing of camshaft angle, so as to improve the power performance and fuel economy of the engine in all speed ranges and reduce exhaust emissions.

Extended data:

Principle of vvt valve:

The principle of VVT (Variable Valve Timing) technology is to adjust the intake (exhaust) amount, valve opening and closing time and angle according to the engine operation. So as to optimize the intake air quantity and improve the combustion efficiency. Its advantages are fuel saving and high power boost ratio. The disadvantage is the lack of speed and torque in the middle section.

When the engine changes from low speed to high speed, the computer will automatically apply oil pressure to the small turbine in the driving gear of the intake camshaft, so that the small turbine rotates at a certain angle relative to the gear housing under the pressure.

So as to make the camshaft rotate forward or backward within the range of 60 degrees, thereby changing the opening time of the intake valve and achieving the purpose of continuously adjusting the valve timing.

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