How do Car Solenoid Valve precisely control the amount of fuel injected to improve engine performance?

In modern automotive engines, the fuel injection system is one of the key performance adjustment components. The Car Solenoid Valve precisely control the amount of fuel injected, the timing of injection, and the injection pattern to ensure that the engine can obtain the best fuel mixture ratio and combustion efficiency under various driving conditions.
The solenoid valve controls the amount of fuel injected each time by adjusting the output pressure of the fuel pump and the opening time of the injector (i.e., the injection pulse width). When the driver steps on the accelerator pedal, the engine control system calculates the required amount of fuel based on information such as the throttle position and engine speed, and adjusts the opening time of the injector through the solenoid valve to achieve this goal. In situations where high power output is required (such as rapid acceleration or high-speed cruising), the solenoid valve increases the opening time of the injector, thereby increasing the amount of fuel injected, ensuring that the engine can obtain enough fuel to produce more torque and power. Conversely, in light load or cruising mode, the solenoid valve reduces the opening time of the injector to reduce fuel consumption and improve fuel efficiency.
In addition to the injection amount, the solenoid valve can also precisely control the timing of fuel injection. In each working cycle of the engine, the fuel needs to be injected into the cylinder at the right time so that it can mix with the air and burn fully. By receiving signals from the engine control system, the solenoid valve can accurately adjust the opening time of the injector to ensure that the fuel is injected into the cylinder at the best time. This precise injection timing control helps improve the engine's combustion efficiency, reduce emissions, and improve power performance.
Modern fuel injection systems usually also have multiple injection modes to adapt to different driving needs and engine operating conditions. For example, in some advanced engines, the solenoid valve can control the injector to perform multiple injections (such as pre-injection, main injection, and post-injection) to optimize the combustion process and reduce emissions. Pre-injection can inject a small amount of fuel into the cylinder before the main injection to improve the uniformity and combustion speed of the mixture; the main injection provides the main fuel supply; the post-injection is used to inject a small amount of fuel in the later stage of the combustion process to further reduce emissions and improve fuel efficiency. By precisely controlling the switching and combination of these injection modes, the solenoid valve can ensure that the engine can achieve the best fuel economy and emission performance under various operating conditions.