Abstract: The invention is directed to a method for controlling the output of fuel vapor from a tank-venting system via a line system to intake channels of individual cylinders of a multi-cylinder engine. The line system branches to respective ones of the cylinders and has at least one controllable valve. The controllable valve alternately releases and blocks the output. The valve is so controlled that the output takes place in synchronism with the periodic repetition of the work cycles of the engine.

Abstract: A process for determining the flow rate of a fluid, in particular of an air flow of an internal combustion engine, a temperature dependent resistor through which a heating current flows being arranged in the flow path of the fluid, the size of the heating current being a measure of the flow rate of the fluid, the temperature of the resistor being determined by a temperature sensor and being set to a constant value by means of a circuit arrangement which influences the heating current, and the fluid flow rate determined immediately after the start of the fluid flow being corrected by means of a correction value (k, k') in order to compensate for a measurement error which occurs when the heating current is switched on but when fluid is not yet flowing due to temperature deviation of the resistor.