The function of high-speed solenoid valve, the working principle of high-speed solenoid valve circuit

High speed solenoid valve The role of

High-speed solenoid valve is also called high-speed on-off valve and high-speed solenoid on-off valve. It is a key executive component of many control systems. For example, in automobile anti-lock braking systems (ABS), electronically controlled diesel injection systems, and camless electronically controlled hydraulic drive valve systems, switching solenoid valves with large flow and quick response are required. It achieves rapid opening and closing by accepting control signals from the electronic control unit. The rated flow rate and action time are measuredImportant indicators of solenoid valve, which directly affect The stability and controllability of the system, the larger the rated flow rate of the solenoid valve, the faster the response time, and the better the control accuracy and stability of the system.

Working principle of high-speed solenoid valve circuit

The principle of the capacitor energy storage high-speed solenoid valve drive circuit is shown in Figure 1. After the pilot injection pulse width signal inj1 of the front cylinder of the rotor machine and the pilot injection pulse width signal inj3 of the rear cylinder pass through the NOR gate, they are input to the high-end driver chip to drive the high-end power mos tube q1, and the dc/dc boosted The 100v power supply charges capacitor c1 after being turned on through q1, and q1 is turned off during the fuel injection pulse width period. The pwm generator controls the duty cycle of the 12v power input through the power mos tube q2. The sources of q1 and q2 are connected to the upper ends of solenoid valves l1 and l3 through diodes d11 and d12 respectively. The functions of d11 and d12 are to isolate two power supplies of different voltages, 100v and 12v. Inj1 and inj3 realize cylinder selection through low-end power mos tubes q4 and q5 respectively. d13 and d14 are freewheeling diodes. The current sense amplifier is connected to the pwm generator to implement feedback control.

The above isThe function of high-speed solenoid valve, high-speed solenoid valve Valve circuit working principle Content introduction. If you want to know more related information, please log in to Sunway Pneumatic www.diancifa.cc to view.