VEHICLE REGENERATIVE BRAKING SYSTEM AND METHOD
First Claim
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1. A vehicle having a first and a second wheel, wherein the first wheel is attached to a first axle and the second wheel is attached to a second axle, the vehicle comprising:
- a regenerative braking system for applying a regenerative braking force to at least the first wheel;
a friction braking system for applying a friction braking force to at least the second wheel; and
a controller configured to determine an occurrence of a braking imbalance between the first and second wheels based on the friction and regenerative braking forces being applied to the first and second wheels, the controller detecting turning of the vehicle and generating signals that cause a reduction in the regenerative braking force at the first wheel when the braking imbalance occurs.
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Abstract
The present invention provides a regenerative system and method for determining the occurrence of a braking imbalance between at least two wheels. In the event of a braking imbalance a vehicle controller generates signals that cause a reduction in the regenerative braking force and a corresponding increase in friction braking force being applied to the vehicle wheels.
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Citations
20 Claims
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1. A vehicle having a first and a second wheel, wherein the first wheel is attached to a first axle and the second wheel is attached to a second axle, the vehicle comprising:
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a regenerative braking system for applying a regenerative braking force to at least the first wheel; a friction braking system for applying a friction braking force to at least the second wheel; and a controller configured to determine an occurrence of a braking imbalance between the first and second wheels based on the friction and regenerative braking forces being applied to the first and second wheels, the controller detecting turning of the vehicle and generating signals that cause a reduction in the regenerative braking force at the first wheel when the braking imbalance occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A vehicle having a front and a rear wheel, wherein the front wheel is attached to a first axle and the rear wheel is attached to a second axle, the vehicle comprising:
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a friction braking system for applying a friction braking force to at least the front wheel; a regenerative braking system for applying a regenerative braking force to at least the rear wheel; and a controller configured to determine the occurrence of a braking imbalance between the front and rear wheels based on the friction and regenerative braking forces being applied to the front and rear wheels, the controller detecting turning of the vehicle and/or a steering command and generating signals that cause a reduction in regenerative braking force when the controller detects turning and/or the steering command and the braking imbalance. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of operation for a vehicle having a first and a second wheel, wherein the first wheel is attached to a first axle and the second wheel is attached to a second axle, the method comprising:
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detecting whether a friction braking force is being applied to at least the second wheel; detecting an application of a regenerative braking force being applied to at least the first wheel; determining, through the use of a controller, an occurrence of a braking imbalance between the first and second wheels based on the friction and regenerative braking forces being applied to the first and second wheels; detecting steering of the vehicle; and generating signals, through the use of the controller, based on the steering and the friction and regenerative braking forces, which cause a reduction in the regenerative braking force at the first wheel and an increase in friction braking force until a braking balance is achieved between the first and the second wheels. - View Dependent Claims (19, 20)
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Specification