초록 ▼

The cooling of a hydraulically-operated wet clutch with coolant is primarily required during the slippage phase when the linings are heated by the slip, that is, when the torque transmitted by the clutch is less than the torque delivered by the engine. A coolant flow control is provided in which a c

The cooling of a hydraulically-operated wet clutch with coolant is primarily required during the slippage phase when the linings are heated by the slip, that is, when the torque transmitted by the clutch is less than the torque delivered by the engine. A coolant flow control is provided in which a coolant control valve is controlled in such a way that it interrupts the coolant flow to the clutch during operation with clutch engaged or disengaged and opens the coolant flow to the clutch during the engagement process of the clutch and, if required, for a predetermined time interval following the engagement process. However, the coolant control valve only opens the coolant flow to the clutch during the disengagement process if the slippage phase during disengagement lasts longer than a predetermined second time interval.

대표청구항 ▼

A coolant flow control system for a disk clutch, comprising: a. a source of coolant; b. coolant valve means for selectively connecting said source of coolant to the clutch; c. sensor means for detecting when the clutch is in the process of being engaged and disengaged, and providing a signal represe

A coolant flow control system for a disk clutch, comprising: a. a source of coolant; b. coolant valve means for selectively connecting said source of coolant to the clutch; c. sensor means for detecting when the clutch is in the process of being engaged and disengaged, and providing a signal representative thereof; d. control means for receiving said signal from said sensor means and for activating said coolant valve means based on said signal to: i. provide coolant to said clutch for a first predetermined time interval immediately following the engagement process; and ii. provide coolant to said clutch during the disengagement process only if the disengagement process lasts for more than a second predetermined time interval.