Throttle Valve
- The throttle valve gets the throttle pressure to correspond to acceleration or the engine load. The throttle cable interlocked with the accelerator pedal transmits the pressure to the throttle cam, and the throttle cam pushes the downshift plug to shift the throttle valve by compressing the two springs in front and behind. Then the line pressure passage opens and throttle pressure is generated. However, the throttle pressure also operates behind the valve, and the throttle valve is pushed back because of the hydraulic pressure. The throttle valve closes the line pressure passage, with the tension of the two springs in the downshift plug position balanced.
- Consequently, the throttle pressure is regulated by the throttle valve opening angles. The hydraulic pressure adjusts the primary regulator valve and the secondary regulator valve to relieve the line pressure.
Courtesy of MAZDA MOTORS CORP.