Chai Wei's six-cylinder engine has a passage. What is the small air valve on the throttle lever?

Chai Wei's six-cylinder engine has a passage. The small air valve on the throttle lever is a throttle valve.

How to use throttle valve

1. After starting the engine for 5 minutes, turn off the engine, open the hood and remove the hose in front of the throttle.

2. When the key enters the power-on state (neutral gear), the throttle can be opened by stepping on the accelerator, and the cleaning agent is sprayed into the intake manifold from the throttle. The spraying time is controlled below 30 seconds, and it is allowed to stand for 3 minutes after spraying. Pay attention to control the injection time. Overinjection of detergent in one operation will cause the engine warning light to light up. If the engine warning light comes on, reset the warning light. Don't fiddle with the throttle valve by hand during cleaning.

3. Replace the hose in front of the throttle to start the engine. Gently step on the accelerator to keep the engine speed at 1000-2000 rpm.

Working principle of throttle valve

Now all vehicles are EFI technology. Let me tell you about the throttle principle of EFI vehicles. There are mainly on-board computers, also called electronic control units (ECU), which are based on the signals of sensors in various parts of the engine on the vehicle (including air flow sensor, intake pressure sensor, throttle position sensor, crankshaft position sensor, camshaft position sensor, coolant temperature sensor, air temperature sensor, oxygen sensor, deflagration sensor, atmospheric pressure sensor, vehicle speed sensor, etc.). ) and the data stored in the computer traffic control unit, control the opening and closing time and ignition timing of the fuel injection valve, control the fuel injection quantity of the vehicle and the optimal air-fuel ratio under various working conditions, so as to achieve the effect of fuel saving and economy.