AUTOMOTIVE REGENERATIVE AND FRICTION BRAKING SYSTEM AND CONTROL METHOD
First Claim
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1. An automotive regenerative and friction braking system, comprising:
- a friction braking subsystem comprising at least one power absorber and a plurality of braking parameter sensors;
a brake system control module for operating said friction braking subsystem;
a regenerative braking subsystem;
a regenerative control module, operatively connected with said brake system control module, for operating said regenerative braking subsystem according to a plurality of signals, comprising at least one signal from said brake system control module; and
a software routine, associated with said regenerative control module, for operating said regenerative braking subsystem in parallel with said friction braking subsystem in the event that said brake system control module becomes inoperative.
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Abstract
An automotive regenerative and friction braking system uses a separate brake system control module and a powertrain control module. The brake system control module normally operates the friction and regenerative brakes in a coordinated, or series, configuration. In the event that the brake system control module becomes inoperative, the powertrain control module will operate the regenerative braking system in a parallel, or independent, configuration.
34 Citations
22 Claims
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1. An automotive regenerative and friction braking system, comprising:
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a friction braking subsystem comprising at least one power absorber and a plurality of braking parameter sensors;
a brake system control module for operating said friction braking subsystem;
a regenerative braking subsystem;
a regenerative control module, operatively connected with said brake system control module, for operating said regenerative braking subsystem according to a plurality of signals, comprising at least one signal from said brake system control module; and
a software routine, associated with said regenerative control module, for operating said regenerative braking subsystem in parallel with said friction braking subsystem in the event that said brake system control module becomes inoperative. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for operating an automotive regenerative and friction braking system, comprising the steps of:
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normally operating a friction braking subsystem and a regenerative braking subsystem in a series configuration, using a brake system control module and a powertrain control module;
operating said regenerative braking subsystem in a parallel configuration under sole control of the powertrain control module in the event that the brake system control module is inoperative. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An automotive regenerative and friction braking system, comprising:
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a friction braking subsystem comprising a brake pedal, a plurality of friction brakes and at least one brake parameter sensor;
a brake system control module for operating said friction braking subsystem;
a regenerative braking subsystem comprising at least one traction motor and an associated traction battery;
a powertrain control module, operatively connected with said brake system control module, for operating said regenerative braking subsystem according to a plurality of signals comprising at least one signal from said brake system control module; and
a software routine, sited within said powertrain control module, for operating said regenerative braking subsystem in parallel with said friction braking subsystem in the event that said brake system control module becomes inoperative, with said software routine using output from said brake parameter sensor. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification