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US 12,427,957 B2Granted
Multi-circuit braking system for brake blending on an electric driveline equipped with pneumatic control
AssigneeBendix Commercial Vehicle Systems LLC
InventorsWilliam Plow, Randy J. Salvatora, Jeremy Beaulieu, John V. Ripley
Life of this patent
Estimating the term…
Abstract
A brake controller determines if an amount of regenerative braking needed to achieve a requested deceleration will exceed a driveline capability of a tractor. If it will, the brake controller redistributes some of the requested deceleration to a braking system of a trailer. That way, the requested deceleration can be achieved by the combination of regenerative braking of the tractor and the braking system of the trailer. Other braking mechanism(s) of the tractor can also be used, if needed.
Claims20
A braking control system comprising:
- a valve configured to receive pneumatic fluid;
- and
- a processor in communication with the valve and configured to:
- receive a deceleration signal generated by movement of a pedal of a tractor having a driveline, wherein the deceleration signal represents a requested deceleration;
- and wherein an amount of regenerative braking needed to achieve the requested deceleration is available to be applied in the tractor;
- prior to causing regenerative braking to be applied, determine whether using the amount of regenerative braking to achieve the requested deceleration will, if applied, exceed a capability of one or more components in the driveline of the tractor to provide controlled braking;
- and
- in response to determining that using the amount of regenerative braking needed to achieve the requested deceleration will, if applied, exceed the capability of the one or more components in the driveline of the tractor to provide controlled braking:
- cause regenerative braking to be applied in an amount that does not exceed the capability of the one or more components in the driveline of the tractor to provide controlled braking;
- and
- activate the valve to allow at least some of the pneumatic fluid to be sent to a braking system of a trailer towed by the tractor as an additional braking circuit.
8 more elements
A method comprising:
- performing the following in a controller of a towing vehicle that is coupled with a towed vehicle:
- receiving a signal requesting deceleration, wherein an amount of regenerative braking needed to achieve the requested deceleration is available to be applied in the towing vehicle;
- prior to causing regenerative braking to be applied, determining whether the amount of regenerative braking needed to be applied by an electric driveline of the towing vehicle to achieve the requested deceleration would, if applied, exceed a maximum deceleration capability of one or more components in the electric driveline to provide controlled braking;
- and
- in response to determining that the amount of regenerative braking needed to be applied would, if applied, exceed the maximum deceleration capability:
- causing the electric driveline to apply regenerative braking on at least one axle in an amount less than the maximum deceleration capability;
- and
- implementing deceleration of the towed vehicle as an additional source of deceleration of a combination of the towing vehicle and towed vehicle.
5 more elements
A system for a multi-axle vehicle comprising:
- an electric motor configured to perform regenerative braking to decelerate a multi-axle vehicle;
- and
- means for:
- receiving a deceleration signal generated by movement of a pedal of the multi-axle vehicle having a driveline, wherein the deceleration signal represents a requested deceleration, and wherein an amount of regenerative braking needed to achieve the requested deceleration is available to be applied in the multi-axle vehicle;
- prior to causing regenerative braking to be applied, determining whether using the amount of regenerative braking needed to achieve the requested deceleration will, if applied, exceed a capability of one or more components in the driveline of the multi-axle vehicle to provide controlled braking;
- and
- in response to determining that using the amount of regenerative braking needed to achieve the requested deceleration will, if applied, exceed the capability of the one or more components in the driveline of the multi-axle vehicle to provide controlled braking:
- causing regenerative braking to be applied in an amount that does not exceed the capability of the one or more components in the driveline of the multi-axle vehicle to provide controlled braking;
- and
- activating an additional braking circuit.
7 more elements
Dependencies are inferred from the claim text.