Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1995-09-25
1998-09-22
Poon, Peter M.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
3031135, 303186, 3031161, B60T 1300
Patent
active
058104550
ABSTRACT:
A braking system for a motor vehicle, having a pressure source, a front wheel brake cylinder and a rear wheel brake cylinder which are connected to the pressure source and produce respective front and rear braking forces for braking respective front and rear wheels of the vehicle, and a pressure reducing valve device for reducing a pressure of the pressure source so that the reduced pressure is applied to the front wheel brake cylinder, wherein a diagnosing device is provided for diagnosing the pressure reducing valve device for abnormality. The diagnosing device may be adapted to diagnose the valve device on the basis of the number of operations to reduce the rear wheel brake cylinder pressure, a pressure difference across the valve device or a change of electrical continuity between electrically conductive valve member and valve seat of the valve device.
REFERENCES:
patent: 4560210 (1985-12-01), Tani et al.
patent: 4735279 (1988-04-01), Sato
patent: 5178442 (1993-01-01), Toda et al.
patent: 5320423 (1994-06-01), Hashida
patent: 5393131 (1995-02-01), Nomura et al.
Poon Peter M.
Toyota Jidosha & Kabushiki Kaisha
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