New VVT Timing Solenoid Variable Valve For Toyota Camry Corolla Highlander Matrix Rav4 15330-28020 1533028020

The principle and function of excavator solenoid valve mainly include the following aspects:

principle
The electromagnetic valve of excavator uses the magnetic force of electromagnet to control the opening and closing and moving direction of the valve core. The specific principle is as follows:

Opening-closing principle: the core of the solenoid valve is internally provided with a central spring and two end cores. When the electromagnet is attracted, the core will be closed to prevent the oil from flowing; When the electromagnet is de-energized, the valve core will rebound to make the oil flow. By controlling the on-off of the electromagnet, the valve core can be opened and closed.
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Principle of moving direction: the moving direction of the valve core is controlled by the on-off of the electromagnet, thus changing the flow direction of the liquid path.
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function
The electromagnetic valve of excavator plays a vital role in the hydraulic system of excavator, including:

Control the direction and speed of the rotating mechanism: the electromagnetic valve can control the direction and speed of the rotating mechanism of the excavator, thus realizing the rotating action of the excavator.
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Control the action of the hydraulic cylinder: the solenoid valve can also control the expansion and contraction of the hydraulic cylinder, so as to realize various actions such as digging, loading and unloading.
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Balanced oil circuit: used to balance the oil circuit in the hydraulic system, keep the balance of the hydraulic system, and avoid system failure caused by too high or too low pressure.
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Cooperate with different circuits to realize the expected control: the solenoid valve can cooperate with different circuits to realize the expected control, and the control accuracy and flexibility can be guaranteed.
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Common types and troubleshooting methods
Common types of solenoid valves include one-way valves, safety valves, directional control valves and speed control valves. Different types of solenoid valves play different roles in the control system. Troubleshooting methods usually include checking whether the contact between electromagnet and electromagnet coil is good, keeping the hydraulic system clean and hygienic, regularly checking the tightness and working state of solenoid valve, and replacing and maintaining it in time.
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