System for detecting abrasion of brush of direct current motor

Details System for detecting abrasion of brush of direct current motor System for detecting abrasion of brush of direct current motor

2005-01-04

2005-01-04

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S238000

Reexamination Certificate

active

06838803

ABSTRACT:
A motor vehicle has road wheels driven by a direct current motor that has a brush installed therein. A system for detecting abrasion of the brush comprises a clutch arranged between the road wheel and the direct current motor. The clutch is of a wet type so that in ON condition thereof, drive and driven members thereof are engaged with each other causing transmission of a torque of the motor to the road wheel and in OFF condition thereof, the drive and driven members thereof are disengaged from each other permitting a certain but small transmission of a torque of the road wheels toward the motor due to a viscosity possessed by oil in the clutch. A rotation speed sensor is provided that detects a rotation speed of the motor. A control unit is provided that issues a brush abrasion representing signal based on the rotation speed of the motor detected under OFF condition of the clutch.

REFERENCES:
patent: 4488078 (1984-12-01), Orton
patent: 4743787 (1988-05-01), Bunner et al.
patent: 4761594 (1988-08-01), Rodi et al.
patent: 4918348 (1990-04-01), Fitzsimmons et al.
patent: 5283489 (1994-02-01), Ochiai et al.
patent: 6703755 (2004-03-01), Miyamoto et al.
patent: 57-006301 (1982-01-01), None
patent: 62-155745 (1987-07-01), None
patent: 05-304746 (1993-11-01), None
patent: 6-14501 (1994-01-01), None
patent: 07-231508 (1995-08-01), None
patent: 8-308186 (1996-11-01), None
patent: 9-142328 (1997-06-01), None
patent: 9-289757 (1997-11-01), None
patent: 10-94287 (1998-04-01), None
patent: 11-103561 (1999-04-01), None

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