Method and device for controlling an internal combustion engine
AssigneeSiemens Aktiengesellschaft
InventorsJohann Frohlich, Hong Zhang
Life of this patent
Estimating the term…
Abstract
A method and device for controlling an internal combustion engine includes a pedal position transmitter which registers the pedal position of a gas pedal. An estimated value of a desired torque to be applied at a clutch is derived cyclically from the pedal position and at least one operating variable of the internal combustion engine. A set point of the desired torque is ascertained as a function of an estimated value of the desired torque. A change over time of the set point (TQ.sub.-- REQ.sub.-- EST) of the desired torque is limited to a predefined change value (AW) while the set point remains in a predefined value range about the zero value of the desired torque.
Claims10
A method for controlling an internal combustion engine, which comprises:
- registering a gas pedal position of a gas pedal associated with an internal combustion engine with a pedal position transmitter;
- deriving cyclically an estimated value of a desired torque to be applied at a clutch from the gas pedal position and at least one operating variable of the internal combustion engine;
- ascertaining a set point of the desired torque as a function of the estimated value of the desired torque;
- limiting a change in the set point of the desired torque over time to a predefined change value if the set point is within a predefined value range of the set point around a zero value of the desired torque;
- and
- deriving an actuating signal for at least one actuator of the internal combustion engine from the set point of the desired torque.
A device for controlling an internal combustion engine, comprising:
- a gas pedal position transmitter for registering a pedal position of a gas pedal;
- first means for deriving an estimated value of a desired torque residing at a clutch from said gas pedal position and at least one operating variable of an internal combustion engine;
- second means for ascertaining a set point of said desired torque as a function of an estimated value of said desired torque;
- third means for limiting a change of said set point of said desired torque over time to a predefined change value if said set point is within a predefined value range of said set point about a zero value of said desired torque;
- and
- fourth means for deriving an actuating signal for at least one actuator of the internal combustion engine from said set point of said desired torque.
Dependencies are inferred from the claim text.