Differential limiting torque control system for automotive vehic

Details Differential limiting torque control system for automotive vehic Differential limiting torque control system for automotive vehic

1994-07-06

1995-12-26

Zanelli, Michael

Boots, shoes, and leggings

180197, B60K 2304

Patent

active

054793483

ABSTRACT:
An automobile differential limiting torque control system with a limited slip differential mounted between right and left drive road wheels for limiting a differential action, comprises sensors for detecting a vehicle speed and an accelerating degree of the vehicle, and an active limited slip differential controller responsive to the accelerating degree for deriving a target torque value for the differential limiting torque. The controller derives the slip difference between a vehicle-speed dependent allowable slip limit and an actual slip amount at an outer wheel of the right and left drive road wheels during cornering of the vehicle in the presence of depression of the accelerator pedal. The controller includes a filter responsive to the slip difference, for filtering the derived target torque value so that the actual slip amount is maintained within the allowable slip limit through a filtering process which sets a limit to a decrement of a previous control command when the actual slip amount exceeds the allowable slip limit, and sets a limit to an increment of the previous control command when the actual slip amount is less than and close to the allowable slip limit. The controller adjusts the differential limiting torque to the filtered target torque value.

REFERENCES:
patent: 5152362 (1992-10-01), Naito
patent: 5168953 (1992-12-01), Naito
patent: 5172787 (1992-12-01), Kobayashi
patent: 5213177 (1993-05-01), May
patent: 5287941 (1994-02-01), Masuda et al.
patent: 5332059 (1994-07-01), Shirakawa et al.

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