What are the regulating characteristics of EFI engine?

Cars have become an indispensable means of transportation in people's lives. In order to master automobile knowledge better, the regulation characteristics of EFI engine are particularly important. The regulation characteristics of EFI engine will be briefly introduced below. The regulation of EFI engine has the following characteristics: sensors capture real-time working condition information, electronic throttle adjusts load and speed, realizes systematic and networked management, and is sensitive to contact resistance and voltage. Compared with the traditional mechanical system (such as carburetor), the EFI engine adopts electronic regulating device to regulate the fuel supply flow of the engine. Principle of single-point injection and multi-point injection system: Single-point injection system (SPI) is also called central fuel injection system (CFI). Like multi-point injection system, it consists of three parts: oil supply part, gas supply part and adjustment part. The oil supply part consists of oil tank, electric fuel pump, fuel filter, pressure regulator and central injector. Most electric fuel pumps are installed in the fuel tank. The impurities filtered by the fuel filter are pumped out by the system at a low pressure of 0. 1MPa and sent to the central injector for injection. The air source part consists of air filter, throttle, intake manifold and cylinder. After the air is sucked into the throttle valve, it is mixed with atomized fuel to form a mixture, which is then distributed to each cylinder through the intake manifold. The regulating part consists of electronic control unit (ECU) and various sensors. Key sensors such as throttle position sensor, oxygen sensor and crankshaft position sensor feed back signals to ECU, and then ECU sends working instructions to actuators such as central injector. The above is a brief introduction about the regulation characteristics of EFI engine, which may be helpful to interested readers.