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Throttle Body
| Fig. 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 intake manifold and cylinder head; 5 - bolt 25 Nm; 6 - a vacuum hose from the valve of the crankcase ventilation system; 7 - the ventilation hose from the cleaning system by means of activated carbon; 8 - T-shaped fitting; 9 - the throttle body; 10 - plug connector, black, 8 connectors; 11 - gasket should be replaced; 12 - support of the throttle cable; 13 - coupling element 35 Nm (EGR valve); 14 - "mass" cable; 15 - the left rear support between the top of the intake manifold and the cylinder head
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The housing 9 (Fig. 200) throttle housed various elements. It is the throttle, which is through the roller lever and the accelerator cable is connected to the pedal "gas" (accelerator pedal). Depending on the pedal "gas", the inlet is opened or closed. At full load (pedal "gas" into the floor) inlet opens fully. Throttle potentiometer Throttle potentiometer built into the computer. It determines the position of the throttle valve at a given time and under all operating conditions of the engine and transmits this information to the computer. When you turn the throttle in response to movement of the accelerator pedal axis of the throttle sends the rotary motion to the throttle position sensor, and it thus changes the voltage of the output signal. By measuring the output voltage of the signal, the computer determines the current position of the throttle, you need to calculate the ignition timing and fuel injection pulse width. Thus, a control of stabilization of idling, turn off the fuel supply or leaner mixture at full throttle. The valve of stabilization of idling adjustment allows the engine speed of the engine idling when mounted on the vehicle power steering, automatic transmission, or when the air conditioner. Valve stabilizing idling passes through the throttle body extra amount of air that passes through the air flow sensor, which causes the engine intake additional fuel, allowing an increase in engine power for the operation of the power steering, air conditioning or automatic transmission.
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