Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1990-08-20
1991-03-12
Graham, Matthew C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303 93, 303 96, 180197, 36442603, B60T 808
Patent
active
049987828
ABSTRACT:
A traction control system for limiting the slip of a driven wheel determines an excessive spinning condition of the wheel in response to an excess driving torque applied from the vehicle engine. If the vehicle speed is less than a predetermined value, a braking force is applied to the wheel that is a predetermined function of the spin ratio of the wheel and when the vehicle speed is greater than the predetermined value, a braking force is applied to the wheel that is a predetermined function of the difference between the driven wheel speed and the vehicle speed.
REFERENCES:
patent: 3680655 (1972-08-01), Beyerlein et al.
patent: 3779331 (1973-12-01), Burckhardt et al.
patent: 4583611 (1986-04-01), Frank et al.
patent: 4637487 (1987-01-01), Nakamura et al.
patent: 4718735 (1988-06-01), Ogino
patent: 4733760 (1988-03-01), Inagaki et al.
patent: 4763912 (1988-08-01), Matsuda
patent: 4778025 (1988-10-01), Sakaguchi et al.
Thatcher David A.
Tierney Gordon L.
Conkey Howard N.
General Motors Corporation
Graham Matthew C.
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