Pic. 200. Details installed near the throttle body: 1 - the upper part of the intake manifold; 2 - cable guide; 3 - bolt, 10 Nm; 4 - rear right support between the upper part of the intake manifold and the cylinder head; 5 - bolt, 25 Nm; 6 - vacuum hose, from the valve of the crankcase ventilation system; 7 - ventilation hose, from the cleaning system with activated carbon; 8 - T-shaped fitting; 9 - throttle body; 10 - plug block, black, 8 connectors; 11 - gasket, should be replaced; 12 - throttle cable support; 13 - connecting element, 35 Nm (for EGR valve); 14 - «mass» cable; 15 - left rear support between the upper part of the intake manifold and the cylinder head
In building 9 (pic. 200) throttle body placed various elements. It contains a throttle valve, which is connected to the pedal via a roller lever and a throttle cable «gas» (fuel control pedal). depending on pedal position «gas», the inlet opening or closing. Full load (pedal «gas» to the floor) the inlet opens completely.
Throttle Potentiometer
The throttle potentiometer is built into the ECU. It determines the position of the throttle valve at a given time and under all engine operating conditions and transmits this information to the ECU.
When the throttle valve is turned in response to the movement of the accelerator pedal, the throttle shaft transmits rotational motion to the throttle position sensor, and the output signal voltage changes on it. By measuring the signal output voltage, the ECU determines the current throttle position needed to calculate the ignition timing and injection pulse width.
Thus, the control of idling stabilization, turning off the fuel supply or enriching the working mixture at full throttle opening is carried out.
Idle stabilization valve
The idle speed control valve regulates the idle speed of the engine when the vehicle is equipped with power steering, automatic transmission or when the air conditioner is on. The idle control valve allows additional air through the throttle body, which passes through the mass air flow sensor, which causes additional fuel to enter the engine, allowing more engine power to operate the power steering, air conditioning or automatic transmission.
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