Method for controlling rail pressure
A tube pressure and regulating circuit technology, applied in fuel injection control, engine control, machine/engine, etc., can solve problems such as harsh regulation deviation
Active Publication Date: 2014-04-23
ROLLS ROYCE SOLUTIONS GMBH
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Problems solved by technology
Since there is no B-side I component in the regulator, this solution is critical in terms of remaining regulation deviation
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The invention relates to a method for controlling the rail pressure of an internal combustion engine in a V arrangement having an unequal ignition sequence, in which method an actual rail pressure is calculated from the measured rail pressure, a control deviation is determined on the basis of the actual rail pressure and a target rail pressure, and a manipulated variable for controlling a pressure actuator, in particular a suction throttle, is calculated in order to control the rail pressure. The invention is characterized in that the actual rail pressure is calculated from the measured rail pressure by means of a mean value filter, in that below a limit rotational speed (nLi) the rail pressure is averaged over a constant time and above the limit rotational speed (nLi) the rail pressure is averaged over a working cycle of the internal combustion engine.
Description
technical field The invention relates to a method according to the preamble of claim 1 for regulating the accumulator pressure of a V-arranged internal combustion engine with different firing sequences. Background technique 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 . Since the combustion...
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IPC IPC(8): F02D41/38
CPCF02D2041/3881F02D2041/1432F02D41/3845F02D2041/286F02D41/14F02D2200/0602
Inventor A.德尔克
Owner ROLLS ROYCE SOLUTIONS GMBH
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