Throttle control and idle speed adjustment (Skoda Octavia 1U)

Idle speed adjustment is performed by the throttle valve itself. The adjustment is performed by the idle speed actuator (equipped with an electric motor). The precise setting of the throttle valve coordinates is carried out depending on the voltage and current in the position regulator. An electric throttle valve is added to the standard control of the throttle valve using a rod. It regulates idle speed and dampens deceleration when "throttle release" only when the driver's desire is detected when idle speed is on. The throttle valve is set in the adjustable range (regardless of the position of the rope pulley and drive) to a larger opening angle. Outside the adjustable range, the throttle valve is set only by the gas cable, in other words, at the driver's discretion. The adjustment range using an electric motor is within the range of up to 50 kg/hour of air mass (cold start).

In an emergency condition, the throttle valve is set to an air quantity of approximately 11 kg/hour, and the driver does not influence the reset. The feedback signal about the position of the drive and throttle valve to the control unit is carried out by two potentiometers.

To ensure the possibility of a linear increase in the amount of air (helping to minimize shocks and optimize adjustment quality) by changing the opening angle of the throttle valve, the air throat has the shape (within the adjustable range) calottes (spherical surface).