Abstract:
A method for operating a vehicle braking system for motor vehicles including a hybrid or electric drive and hydraulically actutable wheel brakes on the front axle, wherein the wheels associated with the rear axle are driven at least partially by an electric motor that can be operated as a generator to recover braking energy and, in generator mode, exerts a braking force on the vehicle wheel associated with the respective axle, thereby generating a drag torque including the braking torque and the regeneration torque of the electric drive, the drag torque being separately regulatable on the front and rear axles. To prevent overbraking of the rear axle and a loss of driving stability of the vehicle, a regeneration torque acting on the rear axle is controlled or regulated such that the drag torque acting on the rear axle does not exceed a maximum drag torque value associated with that axle.
Abstract:
A method for operating a vehicle braking system for motor vehicles including a hybrid or electric drive and hydraulically actutable wheel brakes on the front axle, wherein the wheels associated with the rear axle are driven at least partially by an electric motor that can be operated as a generator to recover braking energy and, in generator mode, exerts a braking force on the vehicle wheel associated with the respective axle, thereby generating a drag torque including the braking torque and the regeneration torque of the electric drive, the drag torque being separately regulatable on the front and rear axles. To prevent overbraking of the rear axle and a loss of driving stability of the vehicle, a regeneration torque acting on the rear axle is controlled or regulated such that the drag torque acting on the rear axle does not exceed a maximum drag torque value associated with that axle.
Abstract:
A method of controlling a drive train of a motor vehicle having an engine, wheels, a wheel slip control system, and an automatic transmission having a clutch, the clutch capable of being opened and closed, wherein the automatic transmission is controlled based upon signals generated by the wheel slip control system.
Abstract:
An engine drag-torque control, particularly for motor vehicles, in which the engine torque is increased by an EDC augmenting torque when the driven wheels drop below a slip threshold due to the braking action of the engine and exhibit a brake slip which is too high. To improve the vehicle control during cornering on a roadway having a low coefficient of friction, it is provided to increase the slip threshold for the driven wheels to thereby set the drag-torque control to be more sensitive.
Abstract:
The present invention describes a coordination device for nominal values for the brake and/or the engine. The arrangement is based on a system wherein various components contribute to controlling the longitudinal dynamics of a vehicle. According to the present invention, these components generate in parallel to each other intermediate nominal values for the brake and/or the engine. According to the intermediate nominal values prevailing, coordination devices generate engine or brake nominal values which are sent to the corresponding components.
Abstract:
A wheel slip control system (ABS and/or drive slip control and/or engine drag moment control system) is formed so that when vehicle motion along curvilinear path is detected the control system is switched to different permitted wheel slip values on different sides of the vehicle, in such a way that a yawing moment is created which acts counter to the yawing moment produced by the vehicle's tendency to oversteer or understeer.
Abstract:
Bei dem erfindungsgemäßen Verfahren und dem erfindungsgemäßen Sicherheitskonzept zur Erkennung von Fehlern in einem Antriebssystem eines Kraftfahrzeuges mit einem elektronisch steuerbaren Bremsregelsystem und mit mindestens einem elektronisch steuerbaren Antriebsmotor und/oder mit einer elektronisch steuerbaren Kupplung und/oder mit einem elektronisch steuerbaren Getriebe ist dem Bremsregelsystem ein elektronisches Bremssteuergerät zugeordnet, das mit einem unabhängigen Überwachungsmodul verbunden ist, wobei das unabhängige Überwachungsmodul zur Erkennung eines Fehlers im Antriebssystem das Auftreten eines nicht plausiblen Bremsmoments überprüft.
Abstract:
Bei einem Verfahren zur Unterstützung der Fahrzeuggeschwindigkeitsberechnung in einem Fahrzeug, das ein Achsdifferenzial an mindestens einer Fahrzeugachse und eine Bremsanlage zum Abbremsen einzelner Räder der Fahrzeugachse aufweist, wird im Falle des Abbremsens des Fahrzeugs über den Antriebsstrang zusätzlich ein Rad der Fahrzeugachse über die Bremsanlage abgebremst, wobei die Drehzahl des gegenüberliegenden Rades der Ermittlung der Fahrzeuggeschwindigkeit zugrunde gelegt wird.
Abstract:
The invention relates to a coordination device (14, 15) for setpoints for brakes (17) and/or motor (19). It is based on a system in which different components contribute to regulating the longitudinal dynamics of a vehicle. In accordance with the invention, these components parallely produce intermediate setpoints for brakes and/or motor. Coordination devices (14 and/or 15) produce motor and/or brake setpoints, on the basis of intermediate setpoints which are close to them, and which are transmitted to the corresponding components.