Vehicle drive torque controller
AssigneeNissan Motor Co., Ltd.
InventorSota Yasuda
Life of this patent
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Abstract
The drive wheels of a vehicle are connected to an engine via a torque converter and racing of the drive wheels during starting of the vehicle and subsequent acceleration is prevent by reducing the torque of the drive wheels according to the driving state of the vehicle. A slip factor of the torque converter is computed, and a lower limit of the torque is set based on the slip rate. Insufficient acceleration after starting is avoided by preventing the torque of the drive wheels from falling below this lower limit.
Claims6
A drive torque controller for use with a vehicle which has a drive wheel connected to an engine via a torque converter, comprising:
- means for detecting a running state of a vehicle, means for reducing a drive torque of said drive wheel based on said running state, means for computing a slip factor of said torque converter, means for setting a lower limit of the drive torque based on said slip factor, and means for preventing said reducing means from reducing said drive torque to a value lower than the lower limit.
A drive torque controller for use with a vehicle which has a drive wheel connected to an engine via torque converter, comprising:
- means for detecting a running state of said vehicle, means for calculating a target drive torque of said drive wheel based on said running state, means for controlling an engine torque so as to obtain said target drive torque, means for detecting an acceleration of said vehicle, means for detecting said engine torque, means for calculating an estimated acceleration of said vehicle on a flat road from the engine torque, and means for correcting said target drive torque based on a difference between the estimated acceleration and said acceleration detected by the acceleration detecting means so that said estimated acceleration corresponds to detected acceleration.
Dependencies are inferred from the claim text.