The variable-force transmission solenoid (VTS) controls the pilot pressure in automatic transmissions.
thanks to minimization of leakage in transmission hydraulics (CE function)
due to variable mechanical and electrical interfaces
Drag to rotate
The spool VTS is a variable-force transmission solenoid that uses a spool design.
The bleed VTS is a variable-force transmission solenoid that uses a flat seat design.
In automatic-shift transmissions, the VTS controls the main pressure, modulates the switching pressure, switches the lock-up clutch and assists the safety functions. In continuously variable transmissions, it is used mainly for shifting the transmission ratio, regulating the belt tension and controlling the lock-up clutch.
The VTS has a vent-controlled pilot valve for automatic transmission as well as a Teflon-coated anchor bearing. The pilot pressure is subsequently amplified in the hydraulic control plate to operate the clutch couplings. The VTS is available in versions with a rising or falling characteristic curve.
Inlet pressure
Control pressure
Operating current
Flow rate
Inlet pressure
Control pressure
Operating current
Flow rate
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