The D-type pressure-sensitive gasoline injection system determines the intake air volume of the engine by detecting the degree of vacuum of the intake manifold and the engine speed, and the ECU determines the fuel injection amount based Sensor on the intake pipe. Fuel system mainly by the fuel tank, electric gasoline pump, fuel filter, fuel pressure regulator, cold start injector and injector, and so on.
Electric petrol pump oil supply by 80-120L / H. The fuel pressure regulator maintains the oil pressure in the pipe at 200Kpa, providing a stable fuel injection pressure for the injector. The injector is injected into the intake manifold at a distance of 10-15 cm from the engine intake valve. The fuel is pumped from the fuel tank and sent to the filter. The cleaned fuel is sent to the injector and the cold start valve by the pressure regulator. The excess fuel is returned Fuel Rail Pressure Sensor to the tank by the pressure regulator. When the injector is injected, the oil pressure in the oil path will vary slightly, so it is necessary to adjust the pulsation damper to reduce the oil pressure change. The pulsating damper can be mounted on an oil return or an electric petrol pump.
Air through the air filter, the temperature measured by the air temperature sensor flow through the throttle body, when idle, the air from the throttle on the bypass air flow through the intake manifold; when the cold start, part of the The intake air is supplied by the bypass air valve to the engine with additional intake air. The intake air through the throttle valve is injected into the intake manifold by the intake manifold pressure sensor. The electronic control system is processed according to the sensor signal to form a pulse signal to control the opening of the injector. The ECU controls the injection time of the electromagnetic injector through the time relay to control the fuel injection. In addition, there are ignition ahead of control, idle control and so on. Idle through the additional air valve to increase the amount of mixed gas. The operation of the air valve Temperature Sensor is related to the inlet cross-sectional area, such as when the cooling water temperature reaches 60 degrees or more, the valve is completely closed. If the pressure change information can not be immediately passed to the ECU, will lead to accelerated fuel lag, resulting in poor acceleration. In the throttle connection relay contact output pulse signal, the ECU can issue instructions to increase the timely supply of oil. When the throttle valve is closed but the crankshaft is rotating at high speed, the relay generates a signal that terminates the supply of oil to reduce fuel consumption such as downhill and braking
In the intake manifold or air filter is equipped with intake air temperature sensor, in order to get the modified air density with temperature changes. General air temperature for each lower 10 degrees, then increase the oil supply 1% -3%. Gasoline pump control When the engine starts, the ignition switch is connected to the ST, the coil L2 is energized, the relay contacts are closed, and the gasoline pump ABS Sensor is energized. The engine rotates its speed signal Ne input ECU, VT turns on, coil L1 is energized. As long as the engine is running, the relay contacts are closed.