Uphill start-up assistance device for motor vehicle
AssigneeRENAULT s.a.s.
InventorsPascal Bodin, Emmanuel Devaud, Joel Szymanski
Life of this patent
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Abstract
A device for uphill start-up assistance for a motor vehicle including a control for controlling release of the vehicle mechanical brakes that act on the vehicle wheels, so that the vehicle is maintained on the slope when maneuvering uphill without any intervention from the driver on this maintaining condition. The control uses mainly the state of the slope, the interpretation and anticipation of the commands of driver and/or of a central driving member, and the determined instantaneous clutching characteristics. In a preferred embodiment, the assistance device co-operates with an electrical device of the parking brake.
Claims33
A device for assisting uphill maneuvers of a vehicle provided with a motive power unit connected to driving wheels by a clutch and a gearbox, whose ratios can be selected during decoupling of motive power by clutch disengagement, and with a brake system in which at least brake release can be controlled, the device comprising:
- means for estimating a slope to be negotiated by the vehicle;
- means for interpreting commands of a driver and/or of a central driving unit;
- means for determining instantaneous clutch-engagement characteristics, which generates an estimated value (ĈT) of transmitted torque;
- and
- means connected to the means for estimating, means for interpreting, and means for determining for effecting a release command for the brake system, such that the vehicle is held on the slope during the uphill maneuver.
Dependencies are inferred from the claim text.