Robert Boschgmbh

Christian Ruland

Guenter Kettenacker

Wolfgang Haag

Oliver Heim

Klaus Schwarze

Andre Vogel

Sven Faehnle

Maria-Dolores Sanchez Moreno

A device and a method for checking switch-off paths in control units of internal combustion engines during ongoing engine operation.

Device and method for checking safety-relevant switch-off paths in control units during ongoing engine operation

A method for operating a drive motor of a drive system, including the following: providing a control variable, which is ascertained as a function of one or multiple state variable(s) of the drive system and as a function of a default variable, to an output stage for operating the drive motor; reading the control variable previously provided to the output stage back from the output stage to obtain a read-back control variable; ascertaining a back-calculated torque from the read-back control variable; comparing the back-calculated torque and a predefined monitoring torque; and providing the control variable or an alternative control variable ascertained from the monitoring torque to the output stage as a function of a result of the comparison for the purpose of operating the drive motor.

Method for operating a motor control unit for a drive system

In a method and a device for operating a drive unit, a first output variable of the drive unit is restricted; a setpoint value of a second output variable of the drive unit is specified; and an actual value of the second output variable of the drive unit is determined. The setpoint value is compared with the actual value, and if it is determined that the actual value does not exceed the setpoint value, then the first output variable is restricted to a first value. If it is determined that the actual value exceeds the setpoint value, then the first output variable is restricted to a second value smaller than the first value.

Method and device for operating a drive unit

In a method for checking the operation of specifying an output variable of a drive unit, when a setpoint value of the output variable is specified, a check is performed as to whether this specification of the setpoint is caused by an operation of the control element. If it is determined that this is not the case, then an error is detected.

Growing community of inventors

Remshalden, Germany

Christian Ruland