Transmission solenoid valve
Description
The solenoid valve is a control device that controls the flow of fluid in an automatic transmission. It consists of an electromagnet that activates or deactivates the valve, opening or closing it.
Function
Electrovalves are used for:
* Gear shift
* Torque converter control
*Regulate pressure and fluid flow
* Turning the torque converter lock on and off
* Providing a mode of holding downshifts
Types of solenoid valves
There are several types of transmission solenoid valves:
* Solenoid valves: Activated by an electromagnet.
* Hydraulic valves: Control the flow of fluid.
* Proportional valves: Regulate fluid flow according to an electrical signal.
Location
The solenoid valves are usually located in the gearbox housing or in a separate control unit.
Malfunctions
Malfunctioning solenoid valves can lead to shifting problems, slipping, loss of power and fluid leaks. Typically, solenoid valve malfunctions are caused by:
* Electrical problems (eg broken wires, poor contacts)
* Mechanical problems (such as wear or binding)
* Fluid contamination
Diagnostics and repair
To diagnose faults in solenoid valves, fault code scanners and special devices are used. Repair usually involves replacing the faulty solenoid valve.
Maintenance
To maintain optimal operation of the solenoid valves, it is recommended that the transmission fluid and filter be changed regularly. This helps remove dirt and deposits that can cause malfunctions.