초록 ▼

A torque transmission through the hydrodynamic drive is directly measured by a torque sensor and a desired torque transmission is obtained for operating condition of a prime mover. The clutch slip of a lock-up clutch is adjusted toward a value where the measured torque transmission agrees with the d

A torque transmission through the hydrodynamic drive is directly measured by a torque sensor and a desired torque transmission is obtained for operating condition of a prime mover. The clutch slip of a lock-up clutch is adjusted toward a value where the measured torque transmission agrees with the desired torque transmission.

대표청구항 ▼

A lock-up torque converter associated with a prime mover, comprising: a torque converter including a stationary sleeve, an input shell driven by a prime mover, a pump impeller secured to said input shell and cooperating therewith to form an enclosed fluid space, a turbine runner disposed in said enc

A lock-up torque converter associated with a prime mover, comprising: a torque converter including a stationary sleeve, an input shell driven by a prime mover, a pump impeller secured to said input shell and cooperating therewith to form an enclosed fluid space, a turbine runner disposed in said enclosed fluid space between said input shell and said pump impeller and cooperating with said pump impeller to form a toroidal fluid circuit, and an output hub connected to said turbine runner; a fluid operated friction clutch disposed between said turbine runner and said input shell to define an engagement chamber between said fluid operated clutch and said turbine runner, a disengagement chamber between said fluid operated clutch and said input shell, and a plurality of spring means for providing a drive torque transmitting connection between said turbine runner and said output hub; a torque sensor means for measuring an actual value of torque transmission from said turbine runner to said output hub and generating a sensor output signal indicative of said actual value of torque transmission; means for detecting an operating state of said prime mover when said prime mover is operating; means for determining a desired value of torque transmission from said turbine runner to said output hub in response to the detected operating state of the prime mover and generating a desired signal indicative of said desired value of torque transmission; and control means for controlling an engaging fluid pressure provided to said fluid operated clutch so as to control slip in said fluid operated clutch in such a manner as to adjust said actual value of torque transmission toward said desired value of torque transmission.