4. Powertrain system 4-11 Intake system Intake system 4.1 Intake system 4.1.1 Precautions - Regularly check and clean the air inlet and pay attention to the tightness of the nozzle at the connection part of the intake duct to check for air leakage, so as to avoid rainwater or car wash water flowing into the intake system pipeline, causing damage to system assembly. - Regularly clean or replace the air filter element as required. - When it is found that the air filter element is damaged, the upper and lower end faces of the element are warped and uneven, or the rubber seal ring is aging, deformed, hardened or damaged, etc., the air filter element should be replaced with a new one immediately.
- Before removing each component of the intake system, remove any debris near the parts. Cover the orifice to prevent debris from entering the intake system pipeline or the range extender. - During the refitting of some parts, it is necessary to replace the gasket in accordance with the requirements of the servicing process to avoid causing air leakage in the intake system and affecting the normal operation of the range extender. Warning for fuel pressure removal: - When removing the intake manifold assembly or before servicing the fuel system, the fuel system pressure must be removed first to reduce the risk of personal injury.
- After the fuel system pressure is removed, a small amount of fuel will overflow when the fuel pipeline joint and fuel injection rail are removed. Warning for disconnection of battery: - Before servicing any electrical components, turn off all electrical appliances, turn off the start switch, and disconnect the battery negative terminal. - Failure to follow these safety instructions may result in personal injury or damage to the vehicle.
4.1.2 Introduction to structure and principle Overview of intake system - The intake system consists of air filter assembly, intake pressure/temperature sensor, throttle body assembly, intake manifold assembly, supercharging system pipeline and other parts of complex structures. Turbocharger - A turbocharger is a type of compressor that increases the power output of a range extender by increasing the air intake. - The turbocharger is mounted on the exhaust manifold, and the turbine is driven by the energy generated by the exhaust flow. - The turbine is connected by a shaft to the compressor, which is installed in the intake system of the range extender.
The high-speed rotating impeller raises the intake pressure above atmospheric pressure, thereby increasing the intake air input. - The turbocharger is connected to the range extender through the fuel supply pipe and the fuel drain pipe. Oil is used to lubricate the bearings and also to remove heat from the turbocharger. - The turbocharger is connected to the cooling system of the range extender through the water supply pipe and drain pipe, which can further reduce the high temperature of operation. VOYAH FREE