What does tva mean for diesel vehicles?

Tva valve is used to control the amount of exhaust gas recirculation fed back to the intake system, and is usually located on the right side of the intake manifold, close to the throttle body.

Tva valve of diesel vehicle is equivalent to electronic "throttle valve", which is installed on the intake pipe behind the supercharger and mainly controls fresh air to enter the cylinder under some working conditions.

Performance requirements of tva valve

The performance requirements of throttle valve are: wide flow adjustment range, stable flow-pressure difference change; The internal leakage is small, and the external leakage is also small if there is an oil leak; Small adjusting torque and sensitive action.

There is no difference in shape and structure between throttle valve and choke valve, but the shapes of their opening and closing parts are different. The opening and closing parts of the throttle valve are mostly conical streamline, and the flow and pressure can be adjusted by changing the cross-sectional area of the channel. Throttle valve is used to reduce the pressure of medium under the condition of large pressure drop.