Method for regulating accumulator pressure

Abstract

The invention proposes a method for regulating the accumulator pressure of a V-arranged internal combustion engine with different firing sequences, in which method the actual-accumulator pressure is calculated from the measured accumulator pressure, with the aid of the actual-accumulator The pressure and the theoretical rail pressure determine the control differential, and in this method a control variable for controlling the pressure regulator, in particular the suction restrictor, is calculated for regulating the rail pressure. The invention is characterized in that the actual - accumulator pressure is calculated from the measured accumulator pressure by means of an average value filter by obtaining the mean value of the accumulator pressure over a constant time below the limit speed (nLi) , and above the limiting speed (nLi) the mean value of the rail pressure over the working cycle of the internal combustion engine is obtained.

Description

technical field

[0001] The invention relates to a method for regulating the accumulator pressure of a V-arranged internal combustion engine with different firing sequences. Background technique

[0002] A V-arranged internal combustion engine has accumulators on the A side and the B side for the intermediate storage of fuel. Injectors are connected to the accumulator, through which fuel is injected into the combustion chamber. In the first embodiment of the rail-co-injection system, the individual high-pressure pumps deliver fuel under increased pressure in parallel into the two rails. The same rail pressure therefore exists in both rails. The second embodiment of the accumulator-common injection system differs in that the first high-pressure pump feeds into the first pressure accumulator and the second high-pressure pump feeds into the second pressure accumulator. Two structural forms are known, for example, from DE 43 35 171 .

[0003] Since the combustion quality depe...

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