Abstract:
The present invention is directed to a method for regulating the drive torque following a load change in hybrid vehicles, in which the drive torque is influenced in a load change in that a brake slip at the driven wheel of the hybrid vehicle as a result of the load change is already counteracted in the beginning phase, in such a way that any effect on the lateral stability and thus the stability of the hybrid vehicle during driving is excluded. When brake slip occurs at the driven wheels (4, 5) because of a load change, it is provided that the drive torque is applied via the electromotor(s) (2) of the hybrid vehicle.
Abstract:
A vehicle powertrain torque control provides an engine drag control mode of operation during periods of undesired engine drag induced wheel slip by modifying the torque of the vehicle engine in closed loop control to maintain a driven wheel speed at a predetermined target velocity lower than the vehicle speed by a target velocity difference providing as much engine braking as is consistent with a desired degree of lateral traction. The control derives a velocity error as the difference between the driven wheel speed and the target velocity and derives and delivers to the powertrain a torque command for reducing the velocity error. The torque control determines the engine drag control mode in response to the wheel speed sensors, preferably causing entry of the engine drag control mode when the driven wheel speed that is closest to the vehicle speed falls below the target velocity while powertrain delivered torque and throttle position are below predetermined values indicative of deceleration. The target velocity difference is preferably determined as a weighted difference between vehicle speed and vehicle turn curvature, the difference being reduced by the latter for quicker response in vehicle turns.
Abstract:
A method and associated safety system are provided for the recognition of defects in a drive system of a motor vehicle, having an electronically controllable brake control system and having at least one electronically controlled driving engine, an electronically controllable clutch and/or having an electronically controllable transmission. An electronic braking control device is assigned to the brake control system, which braking control device is connected with an independent monitoring module. The independent monitoring module checks for an occurrence of an implausible braking torque, for detecting a defect in the drive system.
Abstract:
A vehicle control apparatus 10 is provided with an object detecting means detecting an object in a travel direction of a vehicle 30, a restraining means restraining a drive force of the vehicle when the object detecting means detects an object, and a jerk acquiring means acquiring a jerk in a travel direction on the basis of a behavior of the vehicle. When the accelerator of the vehicle is actuated while the vehicle is in a state in which the drive force of the vehicle is restrained, and the speed of the vehicle is lower than a predetermined value, the restraining means increases the drive force, and decreases a post-increase drive force on the basis of the jerk acquired by the jerk acquiring means.
Abstract:
In a method for reducing a mechanical stress of a component of a drive train of a motor vehicle with at least two wheels, of which at least one wheel is a drive wheel, wherein the motor vehicle has an anti-lock braking system and an electric machine which is coupled to the drive wheel, wherein each wheel of the motor vehicle has a dedicated friction brake, the anti-lock braking system operates individually on each friction brake. During activation of the anti-lock braking system, mechanical stress of an articulated shaft connecting the electric machine and the coupled drive wheel is determined, and the electric machine coupled to the drive wheel is controlled so as to counteract the mechanical stress. A motor vehicle making use of the method si also disclosed.
Abstract:
A coasting control device capable of avoiding coasting control during running on road having a small coefficient of friction between a tire and a road surface (“low μ roads”) includes a low μ road running recognition unit which recognizes that a vehicle is running on a low μ road and a unit for prohibiting coasting control during low μ road running when the low μ road running recognition unit recognizes that the vehicle is running on a low μ road.
Abstract:
A method of braking a vehicle which includes ground engaging wheels, and a braking system with ABS capability and including an operator actuated brake control, the ABS becoming operative in response to the operator actuating the brake control, and upon the braking system sensing the slippage or impending slippage of at least one of the ground wheels relative to the ground, to vary the braking force applied to the at least one of the wheels between, in alternative periods, an applied state in which the braking force is applied, and a released state in which the braking force is released, and characterised in that the method includes applying torque to assist acceleration of the wheel at least during periods in which the braking force is released by the ABS.
Abstract:
A system is provided for controlling the inertia of a vehicle's powertrain during sudden braking events. Torque generated by rapid deceleration of the vehicle's drive wheels during braking is prevented from being transmitted through the vehicle's driveline by a clutch which disengages the drive wheels from high effective inertia components in the driveline. The clutch is actuated by a signal produced by any of several sensors on the vehicle which sense a sudden braking event. Driveline speed is adjusted to match drive wheel speed before the clutch is deactivated to reengage driveline with the drive wheels.
Abstract:
A system is provided for controlling the inertia of a vehicle's powertrain during sudden braking events. Torque generated by rapid deceleration of the vehicle's drive wheels during braking is prevented from being transmitted through the vehicle's driveline by a clutch which disengages the drive wheels from high effective inertia components in the driveline. The clutch is actuated by a signal produced by any of several sensors on the vehicle which sense a sudden braking event. Driveline speed is adjusted to match drive wheel speed before the clutch is deactivated to reengage driveline with the drive wheels.
Abstract:
A method and an arrangement for controlling the drive unit of a vehicle are suggested. In a first step, input quantities, which are independent of the drive unit, are applied to form a first input quantity. In a second step, a second input quantity is formed from at least this first input quantity and at least one engine-specific input quantity, the second input quantity influencing at least an actuating quantity of the drive unit. In addition, an interface is described between the engine-independent part and the engine-specific part of the engine control.