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AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorAndreas Bader
Estimating the term…
A method for limiting the rotational speed in an internal combustion engine is provided. A detection device detects prevailing operating parameters. Based on the prevailing operating parameters, the control variables for the ignition, injection and throttle valve position are determined. When the prevailing rotational speed (nact) reaches a preselectable maximum rotational speed value (nmax), through a change in at least one of the control variables, the rotational speed is limited to this preselectable maximum rotational speed value, and a hard rotational speed limitation is achieved by fade-in and fade-out of the injection and/or by intervention in the ignition with simultaneous support by the throttle valve and whereby a soft rotational speed limitation is achieved by retarding the ignition and by varying the throttle valve. Activation of a soft rotational speed limitation or hard rotational speed limitation is coordinated by the control unit according to the requirements of driving performance.
A method for limiting the rotational speed in an internal combustion engine with a device for detecting preselectable operating parameters, with at least one device for determining control variables for ignition, injection and throttle valve position based on the detected operating parameters, whereby on reaching a preselectable rotational speed value (nmax) the rotational speed is limited to the preselectable rotational speed value by varying at least one of the control variables, wherein the injection is faded in and out with or without simultaneous intervention in the ignition with simultaneous support by the electric throttle valve which causes a hard limitation on rotational speed which is combined with a soft limitation on rotational speed accomplished by varying the throttle valve, whereby the combination of hard and soft rotational speed limitation is accomplished according to a desired driving performance.
A method for limiting the rotational speed in an internal combustion engine, comprising the acts of:
Dependencies are inferred from the claim text.