Abstract: In a fuel injection system with an acceleration enrichment and a deceleration leaning, in which the transition compensation is determined by means of the throttle valve change speed in connection with the throttle valve change path. By means of the measurement of the throttle valve position the cause for the change of the air quantity is determined so that the information concerning a change of the operating state is present more quickly and a fuel leaning or fuel enrichment can accordingly also be effected more quickly. An intermediate injection threshold, which activates an intermediate injection calculation when exceeded, is built in, in addition, for the acceleration enrichment.

Abstract: A starting control for fuel injection systems of internal combustion engines is suggested in which an injection time (te.sub.VER), which is dependent on the engine starting temperature (T.sub.MS), is determined in the starting phase. In the starting phase, this injection time (te.sub.VER) follows the curve of special starting characteristic lines. A continuous transition to performance characteristics injection time (te.sub.KF) is effected by means of a comparator. A smooth transition from the starting phase to normal operation is obtained in this way.

Abstract: The invention is directed to a method for the adaptation of mixture control for an internal combustion engine which is set up from operating quantities of the engine such as throttle flap angular position .alpha. and rotational speed n. The characteristic field provides a precontrol quantity governing the quantity of fuel to be metered or injected. The method includes the steps of: influencing the precontrol quantity by at least one adaptively changeable corrective quantity (structural adaptation, global adaptation); detecting the negative change velocity (-d.alpha./dt) of the throttle flap position angle (.alpha.); comparing the negative change velocity (-d.alpha./dt) with a predetermined threshold value [-d.alpha./dt(SchAd)]; evaluating a quantity (.DELTA..alpha.) indicative of the throttle flap change in angular position when the threshold value [-d.alpha./dt(SchAd)] is exceeded, the quantity (.DELTA..alpha.

Abstract: In a method and apparatus for controlling tank venting in internal combustion engines, a regenerative flow of fuel is released from the activated charcoal container to the negative-pressure side of the intake tube of the engine and an adaptation in the computer area for the fuel metering quantity simultaneously is prohibited, or vice versa, an adaptation is authorized and a regenerative fuel flow is prohibited, by cyclical triggering, as a function of whether the throttle flap angle drops below, or exceeds, a predetermined threshold value. Parallel to this, a continuous activated charcoal filter regeneration is provided that comes into play at relatively large air throughputs, by means of a branch line leading into the air filter area upstream of the throttle flap; furthermore, if the throttle flap angle threshold value is exceeded, both the regenerative fuel flow via the tank venting valve and the adaptation in the computer area are authorized.