Method for limiting the speed of an internal combustion engine

摘要

The reference value for an electronic engine power control or adjustment system (14), emitted by an accelerator pedal sensor (10) is limited in such a way that a maximum admissible speed adjustment per unit time (dn/dt) is not exceeded. The limiting begins above an engine speed threshold (nS) and reduces the admissible speed adjustment per unit time (dn/dt) to the value zero if the maximum admissible speed (nmax) of the internal combustion engine is reached. Adjustment to the dn/dt value is performed by means of a proportional and integral control unit (20, 21). The dynamics of the motor vehicle in different gears are taken into account by varying the control parameters as a function of the ratio of engine speed (n) to speed of travel (v), which is supplied by the gear identification circuit (15). In addition a facility is provided for switching between two sets of control parameters which either permit a rapid deviation control, accepting the overswing, or a slower control avoiding any overswing. The method for limiting the engine speed can also be used for limiting the speed of travel (v) of the motor vehicle to a predeterminable maximum speed. A circuit (18) for detecting the maximum speed switches a first change-over switch (16)... Original abstract incomplete. <IMAGE>