How does a torque converter clutch work?
The clutch is inside the torque converter case; it contains a friction material that locks the turbine shaft to the inside of the torque converter’s shell. The TCM sends a pulsed voltage signal to the TCC solenoid. When the clutch is disengaged, the torque converter allows the engine to rotate without stalling.
How does the torque convertor automatically engage and disengage power from the engine to the transmission?
The torque converter serves that role. It’s filled with fluid and uses centrifugal force to engage or disengage the transmission from the engine, depending on the engine’s speed. A valve body opens and closes tiny channels that direct fluid pressure to the appropriate location.
Does the torque converter control shifting?
Almost no one thinks of it, but when you drive your automatic transmission car, you’re master over your car’s torque converter. That’s because torque converters transfer the power your car engine makes to the transmission in your car. Hence, you’ve commanded your torque converter every time your car shifted gears.
How does a torque converter clutch increase efficiency?
As it spins, the impeller pushes transmission fluid through its blades; the faster it goes, the faster the fluid moves. Most torque converters also use a lock-up clutch that locks the impeller and the turbine together at high speeds to increase vehicle fuel efficiency.
How does the torque converter clutch control module work?
The control module uses inputs from various sensors to determine when it is appropriate to apply the torque converter clutch. Once the module deems conditions are correct, it commands one or more TCC solenoid valves to engage the TCC clutch.
How does a torque converter work in a car?
It’s controlled by the TCM. It sends a pulsed voltage signal to the TCC solenoid. The solenoid moves a valve that sends pressurized fluid to the clutch circuit, engaging the TCC. When the clutch is disengaged, the torque converter operates normally, allowing the engine to rotate without stalling while the vehicle is slowing and coming to a stop.
How is the lockup converter clutch assembly controlled?
The lockup converter clutch assembly is controlled by the engine computer or transmission control module depending on the model and the year of the vehicle. The control module energizes the relay which then sends 12 V to the lockup solenoid.
What are the conditions for the converter clutch to apply?
For the converter clutch to apply, two conditions must be met: Internal transmission fluid pressure must be correct. The ECM must complete a ground circuit to energize the TCC solenoid that moves a check ball in the fluid line. This allows the converter clutch to apply when hydraulic pressure is correct.