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What are the effects of a faulty electro-hydraulic module on a car?

1 Answers

DiPeter

09/05/25 7:02am

Damage to the electro-hydraulic module can cause a decrease in the car's power and difficulty in accelerating. Here is some relevant information: 1. Composition of electro-hydraulic control: The components of electro-hydraulic control in the electro-hydraulic module include command elements, comparison elements, electronic controllers, proportional valves, and hydraulic actuators. The command element is responsible for generating and inputting control signals. It can also be referred to as a programmer or input circuit. In the presence of feedback signals, it provides control signals of the same form and magnitude as the feedback signals. The comparison element compares the given input with the feedback signal to generate a deviation signal, which serves as the input to the electronic controller. The electronic controller, often called a proportional amplifier, amplifies the control signal because the control current required by the solenoid in the proportional valve is larger than the small deviation control current, which is insufficient to drive the solenoid. 2. Working principle of electro-hydraulic control: Electro-hydraulic control refers to a control method in hydraulic transmission and control that can accept analog or digital signals, enabling the output flow or pressure to be continuously and proportionally controlled. Electro-hydraulic proportional valves are hydraulic components that fall between on-off hydraulic valves and servo valves. Compared to electro-hydraulic servo valves, their advantages include lower cost and stronger resistance to contamination. Although they may not match servo valves in terms of control accuracy and response speed, their performance and control level are comparable in other aspects. Therefore, electro-hydraulic control systems are widely used in electro-hydraulic modules.

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