When to use lock up clutch in torque converter?
When to use lock up clutch in torque converter?
Coupling: When turbine speed reaches approximately 90% its speed of impeller the torque multiplication ceases, the torque converter behaves like simple fluid coupling. In modern design, at this stage, a lock up clutch is used to increase the fuel efficiency.
How does the lock up clutch mechanism work?
The lock-up clutch mechanism connects the engine power directly and mechanically to the automatic transaxle. Since the torque converter uses the fluid flow to transmit the power indirectly, there are power losses. Therefore, the clutch is attached in the torque converter to connect the engine…
How does the centrifugal force in a clutch work?
The springs of the clutch are designed to transmit the torque at normal engine speed. While the centrifugal force helps in torque transmission at higher engine speed. At normal engine speeds, when the power transmission is low, the springs keep the clutch engaged, the weighted levers do not have any pressure on the pressure plate.
How does a multi plate clutch work in a car?
The multi-plate clutch is shown in the figure. These types of clutches use multiple clutches to make frictional contact with a flywheel of the engine. This makes transmit power between the engine shaft and the transmission shaft of a vehicle. The number of clutches means more friction surface.
How does a torque converter clutch work in a car?
How the clutch works The torque converter clutch (TCC) solenoid receives a pulsed voltage signal from the transmission control module (TCM). This signal causes the solenoid to move the valve that in turn moves the transmission fluid –which is pressurized- to the circuit of the clutch.
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.
Where does the pressure go in the lock up clutch?
When the vehicle is running at medium to high speeds, the pressurized fluid flows into the area to the rear of the lock up clutch. The relay valve position opens a drain to the area in the front of the lock up clutch, creating an area of low pressure.
How is disengagement of lock up clutch determined?
Engaging and disengaging of the lock up clutch is determined by the point at which the fluid enters the torque converter. Fluid can either the converter in the front of the lock up clutch or in the main body of the converter behind the lock up clutch.
