Abstract:
A method and a system for limiting an engine torque of vehicles to a maximum value. In the method, signals representing wheel torques from wheel sensors at the drive train are acquired, the wheel torques, differentiated according to driving situations which can have a harmful influence on the transmission, differential or torque converter, then being checked for a wheel-torque value which is too high. If too high a value is found, the engine torque is limited or reduced.
Abstract:
A method and a device for controlling a drive unit of a motor vehicle. In this context, in response to a tendency to spin of at least one drive wheel, the torque of the drive unit is reduced. The reduction of the torque, in this context, is limited to a minimum value, which is preferably a function of the prevailing driving situation.
Abstract:
A method of regulating at least one variable characterizing the vehicle dynamics, a loss of pressure in a vehicle tire being determined; the position of the underinflated tire being determined, wherein during cornering, regulation of the variable which characterizes vehicle dynamics is dependent upon whether the underinflated tire is on the inside or outside of the turn being executed by the vehicle.
Abstract:
A drive slip control system in which, if a gearshift has been detected, at least one parameter of the drive slip controller is switched over so as to render the drive slip controller less sensitive.
Abstract:
The actual quotient of the engine speed and sensed speed of the driven wheels is compared to a reference quotient calculated from the engine speed and the instantaneous gear ratio. When wheel vibrations affect the sensed wheel speed signals to an unacceptable degree, the actual quotient will deviate from the reference quotient by more than a prescribed amount. A reference wheel speed calculated from the reference quotient and the engine speed will then be used to determine slippage values, which in turn are used to generate control signals from braking and limiting engine torque. The reference wheel speed may either be used to replace the sensed wheel speeds or to limit the increase in the sensed wheel speeds.
Abstract:
A system for determining the height of the center of gravity of a vehicle includes an arrangement configured to determine a difference between wheel contact forces, an arrangement configured to determine a transverse acceleration, an arrangement configured to determine comparison values which compares the change in the difference between wheel contact forces with the change in the transverse acceleration, and an arrangement configured to evaluate a roll model which determines the height of the center of gravity from the comparison values. Furthermore, a corresponding method is for determining the height of the center of gravity of a vehicle.
Abstract:
A method and a system for operating a brake system of a motor vehicle having traction control are described. The brake system contains sensors which are assigned to the individual vehicle wheels and with which a quantity representing at least the driving and/or braking forces acting between the road surface and the vehicle wheel is detected for the respective vehicle wheel. For operation of the brake system having traction control, pressure quantities which describe the brake pressure established for the respective vehicle wheel are analyzed. The pressure quantities are determined as a function of the quantities detected by the sensors.
Abstract:
A movement of a vehicle is detected, using tire sensors, by evaluating detected, measured signals in an evaluating unit in such a manner, that the polarity of the measured signals, starting from the measured signals at vehicle standstill, is used as an indicator of the vehicle moving direction.
Abstract:
A method and device for controlling the wheel performance of a vehicle is described. Wheel performance is influenced within the scope of an operating dynamics system or an electrical brake control system. In this context, a traction control system is used. At least one quantity representing the ambient temperature or the intake air temperature of an internal combustion engine is recorded, and the traction control system is adjusted as a function of this temperature quantity to emphasize stability at low temperatures and to emphasize traction at higher temperatures. In another variant, a pre-charging pump is activated, and a return pump for pre-pressurizing the circuit is activated and/or valves for building up or reducing pressure are triggered via opening pulses. At least one quantity representing the coolant temperature, the ambient temperature, or the intake air temperature of an internal combustion engine is recorded, and as a function of this measured temperature quantity, the length of the opening pulses is changed, the pre-charging pump is activated, and/or the circuit is pre-pressurized by at least one pump.
Abstract:
A device and method for determining values and/or generating signals, which can be used for closed-loop or open-loop controlling of the driving behavior of a vehicle equipped with a sensor system that detects wheel contact forces, includes determining the vehicle mass via the wheel contact forces that are detected, and further includes at least one of determining shifts in the wheel contact forces, and determining the required drive torque.