Robert Boschgmbh

Thorsten Juenemann

Rene Schenk

Oliver Kaefer

Holger Niemann

Holger Huelser

Per Hagman

Frank Steuernagel

Bernd Doerr

Frank Bickendorf

Manfred Hellmann

Alexander Maass

Andreas Seel

Rainer Mayer

Thomas Schuster

Werner Kind

Isabelle Gentil-Kreienkamp

Jim Odeskog

Peter Deuble

Sascha Dreschmann

A method and a device for operating a hybrid vehicle, which ascertain the torque necessary for starting the non-operating internal combustion engine, and this torque is reserved by an additional drive unit. The torque necessary for starting the non-operating internal combustion engine is minimized by appropriately adjusting parameters of the internal combustion engine system.

Method and device for operating a hybrid drive for a vehicle

A method is for controlling a hybrid drive of a vehicle, which includes at least one internal combustion engine and at least one electric machine, having a first clutch situated between the electric machine and the drive train of the vehicle and a second clutch situated between the electric machine and the internal combustion engine. In the method, a predefinable clutch torque is applied to the second clutch for a start of the internal combustion engine by the operating electric machine, the rotational speed of the internal combustion engine is monitored, and the clutch torque is incremented to a higher value if the rotational speed of the internal combustion engine is less than a predefinable threshold value within a predefinable time interval.

Method for controlling a hybrid drive

A hybrid drive () of a motor vehicle (). In the motor vehicle (), an electric motor () acts as the driving force on a first axle () and an internal combustion engine () as a driving force on a second axle (). In an operation, in which only the electric motor () acts on the first axle (), a check is made to determine whether the internal combustion engine () is to be started to drive the second axle (), wherein a first set of conditions for a road start, taking into account first criteria, and a second set of conditions for a starter motor start, taking into account second criteria, are defined and checks are made independently of one another to determine whether the first set of conditions for a road start or the second set of conditions for a starter motor start has been met.

Method for operating a hybrid drive

A method for controlling a hybrid drive of a vehicle, which includes at least one internal combustion engine and at least one electric machine, having a first clutch situated between the electric machine and the drive train of the vehicle and a second clutch situated between the electric machine and the internal combustion engine. Performance parameters of the hybrid drive are controlled as a function of the driver's intent.

A method for operating a hybrid drive system, in particular of a motor vehicle, having at least one electric machine and one internal combustion engine, a disconnecting clutch being provided between the electric machine and the internal combustion engine and a torque converter having a turbine wheel being provided between the electric machine and a hybrid drive output, the disconnecting clutch being engaged for starting the internal combustion engine. It is provided that, as a function of the rotational speed of the turbine wheel of the torque converter, a rotational speed is predefined for the electric machine such that no sudden torque change occurs at the hybrid drive output when the internal combustion engine is started.

Method for operating a hybrid drive system having a torque converter

A method for controlling a vehicle drive unit, the vehicle drive unit having at least two individual motors. A total actual torque is continuously compared with an allowable total torque, the total actual torque being calculated from individual actual torque values of the at least two individual motors, and the allowable total torque being calculated from the allowable individual torque values of the at least two individual motors, and an error response being initiated if the comparison establishes that the total actual torque is greater than the allowable total torque.

Method for controlling a vehicle drive unit

The invention relates to a method for the continuous torque monitoring of a hybrid drive composed of an internal combustion engine with an engine control unit and an inherently safe electric drive with a control unit, wherein a permissible total torque is compared with the sum of an actual torque of the electric drive and an actual torque of the internal combustion engine. If the permissible total torque is reduced by the actual torque of the electric motor and is formed by a permissible torque of the internal combustion engine, it is largely possible by means of this method for existing software to be utilized further, and said software need not be amended. In the engine controller, it is largely possible for calculations to be carried out with torques which are normalized to the maximum torque of the internal combustion engine. In the comparison stage in particular, the value range of the torques in the case of a hybrid drive in relation to that in the case of a pure internal combustion engine is maintained. Storage-space-saving and calculation-duration-saving programming is therefore possible.

Monitoring system for a hybrid drive

In a motor vehicle having an internal combustion engine, an enabling condition is a function of at least one operating variable, of the motor vehicle and/or of the internal combustion engine. Starting and/or stopping of the internal combustion engine are enabled as a function of the enabling condition. It is provided that the presence of the enabling condition be checked redundantly within the scope of a 3-level monitoring concept.

Method for operating motor vehicle having an internal combustion engine

A method for operating an internal combustion engine is provided. By taking into account a setpoint temperature Tof the internal combustion engine which depends on external and internal boundary conditions when controlling and/or regulating temperature-dependent functions of the internal combustion engine, fuel consumption and emission characteristics of the internal combustion engine are improved.

Method for operating a combustion engine

The invention relates to a method and an arrangement for starting or stopping a motor-driven motor vehicle having motor functions () and motor-independent vehicle functions () which can be used independently of the type of drive and independently of the type of motor start or motor stop. For a start operation or a stop operation, at least one command to the motor functions () to start or stop the motor () of the motor vehicle is imparted by the vehicle functions () via an interface (). At least one status datum as to the motor () and/or the motor functions () is transmitted by the motor functions () via the interface () to the vehicle functions.

Method and arrangement for starting or stopping a motor-driven vehicle

A method and an arrangement automatically restarts a drive unit () when there is an unintended stalling of the drive unit (). In the case of stalling, checks are made as to whether the drive unit () was already in a steady-state condition directly before the stalling, as to whether the stalling took place because of an operator input, especially at an input unit () and as to whether a force-tight connection between the drive unit () and a transmission (or) is present. A restart of the drive unit () is automatically initiated when: the drive unit () was already in a steady-state condition directly before the stalling; when the stalling took place in a departure from the operator input; and, when the force-tight connection between the transmission (or) and the drive unit () is interrupted.

Growing community of inventors

Sindelfingen, Germany

Thorsten Juenemann