Check valve
A mechanical or hydraulic valve that controls the flow of fluid within the automatic transmission. Faulty check valves can cause gear shifting problems.
Référence technique
Technical glossary
Definitions of technical terms related to automatic transmissions
C
Torque converter
A hydraulic component that transmits engine power to the gearbox. It uses fluid to multiply torque and enable decoupling between the engine and the transmission.
E
Clutch
A device that connects or disconnects gearbox elements. Automatic transmissions use multiple clutches to engage different gears.
P
Oil pump
A component that generates the hydraulic pressure required for automatic transmission operation. A faulty pump can cause pressure loss and transmission problems.
S
Solenoid
An electro-valve that controls the flow of fluid to the clutches and brakes of the automatic transmission. Faulty solenoids are a common cause of transmission problems.
Hydraulic system
A system using pressurized fluid to actuate clutches, brakes and other automatic transmission components.
T
Automatic transmission
A transmission system that changes gears automatically without driver intervention, using a torque converter and multiple clutches.
Turbine
The part of the torque converter that receives transmission fluid and transmits power to the gearbox.
V
Valve body
A block of valves that controls the distribution of pressurized fluid in the automatic transmission. It is the hydraulic brain of the transmission.
Fluid change
The operation of replacing automatic transmission fluid. Regular fluid changes are essential to keep the transmission in good condition.