US 2007/0192010 A1 · Adaptive deceleration control for commercial truck

Abstract

A position sensor (20) associated with a brake pedal (22) discloses deceleration request data corresponding to a vehicle deceleration request by the driver. A processor (12) executes an algorithm that compares sensor deceleration request data with data representing deceleration that is potentially obtainable by operating one or more mechanisms in the powertrain such as an exhaust brake or an engine brake. Operation of the one or more mechanisms is requested when the comparison discloses that operation of such mechanisms can satisfy the request, thereby precluding the need to apply foundation brakes. Pedal depression beyond a range within which the mechanisms are potentially capable by themselves of satisfying the request, causes foundation brake application so that a fault that does not result in braking by the mechanisms will cause the foundation brakes to be applied when the driver, sensing lack of braking, depresses the pedal further.

Claims26

Dependent claims

A motor vehicle comprising:

a chassis comprising wheels on which the vehicle travels, at least some of which are driven by an internal combustion engine through a powertrain,
a brake system for braking the wheels comprising an actuator that is operated by a driver of the vehicle to brake the vehicle by selective operation of foundation brakes at the wheels and of one or more mechanisms in the powertrain capable of applying braking torque to driven wheels,
a sensor associated with the actuator for disclosing vehicle deceleration request data corresponding to a vehicle deceleration request by the driver, and
a processor comprising an algorithm for comparing vehicle deceleration request data from the sensor with data representing vehicle deceleration that is potentially obtainable by operating one or more of the mechanisms in the powertrain and for requesting operation of the one or more mechanisms to satisfy the request when the comparison discloses that operation of the one or more the mechanisms can satisfy the request.

1 more element

A system for adaptive deceleration control of a motor vehicle that comprises a chassis comprising wheels on which the vehicle travels, at least some of which are driven by an internal combustion engine through a powertrain, and a brake system for braking the wheels comprising an actuator that is operated by a driver of the vehicle to brake the vehicle by selective operation of foundation brakes at the wheels and of one or more mechanisms in the powertrain capable of applying braking torque to driven wheels, the system comprising:

a sensor associated with the actuator for disclosing vehicle deceleration request data corresponding to a vehicle deceleration request by the driver, and
a processor comprising an algorithm for comparing vehicle deceleration request data from the sensor with data representing vehicle deceleration that is potentially obtainable by operating one or more of the mechanisms in the powertrain and for requesting operation of the one or more mechanisms to satisfy the request when the comparison discloses that operation of the one or more the mechanisms can satisfy the request.

A method for adaptive deceleration control of a motor vehicle that comprises a chassis comprising wheels on which the vehicle travels, at least some of which are driven by an internal combustion engine through a powertrain, a brake system for braking the wheels comprising an actuator that is operated by a driver of the vehicle to brake the vehicle by selective operation of foundation brakes at the wheels and of one or more mechanisms in the powertrain capable of applying braking torque to driven wheels, a sensor associated with the actuator for disclosing vehicle deceleration request data corresponding to a vehicle deceleration request by the driver, and a processor, the method comprising:

executing an algorithm in the processor to compare vehicle deceleration request data from the sensor with data representing vehicle deceleration that is potentially obtainable by operating one or more of the mechanisms in the powertrain and requesting operation of the one or more mechanisms to satisfy the request when the comparison discloses that operation of the one or more the mechanisms can satisfy the request.

Dependencies are inferred from the claim text.

Adaptive deceleration control for commercial truck

Life of this patent

Adaptive deceleration control for commercial truck

Life of this patent

Abstract

Claims26