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Method for operating an internal combustion engine, device for the open-loop and closed-loop control of an internal combustion engine, injection system, and internal combustion engine

A technology of injection system and internal combustion engine, applied in charging system, engine control, fuel injection control, etc., to save storage space, improve the possibility of influence, and save computing time

Inactive Publication Date: 2018-12-21
ROLLS ROYCE SOLUTIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Said scheme leaves room for improvement in terms of reliability of pressure measurement

Method used

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  • Method for operating an internal combustion engine, device for the open-loop and closed-loop control of an internal combustion engine, injection system, and internal combustion engine
  • Method for operating an internal combustion engine, device for the open-loop and closed-loop control of an internal combustion engine, injection system, and internal combustion engine
  • Method for operating an internal combustion engine, device for the open-loop and closed-loop control of an internal combustion engine, injection system, and internal combustion engine

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Embodiment Construction

[0062] figure 1 A device corresponding to the prior art as described in DE 10 2014 213 648 B3 is shown. The internal combustion engine 1 has an injection system 3 here. The injection system 3 is preferably configured as a common rail injection system. It has a low-pressure pump 5 for delivering fuel from the fuel container 7, a suction throttle valve 9 on the adjustable low-pressure side that affects the fuel-volume flow to the high-pressure pump 11, and Under pressure, a high-pressure pump 11 that delivers fuel to the high-pressure accumulator 13, a high-pressure accumulator 13 for storing fuel, and preferably a plurality of injectors 15 for injecting fuel into the combustion chamber 16 of the internal combustion engine 1 . Alternatively, it is possible that the injection system 3 is also provided with a single reservoir, wherein, for example, a single reservoir 17 is integrated in the injector 15 as an additional buffer space. In the embodiment shown here, a pressure regu...

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Abstract

The invention relates to a method for operating an internal combustion engine comprising a motor having a number of cylinders and an injection system having a common rail with a number of injectors assigned to the cylinders and similar high-pressure components, in particular wherein an injector is assigned an individual reservoir, which is designed to hold fuel from the common rail for the injector, wherein the method has the steps: injecting fuel from the common rail into a cylinder by means of an injector, determining a fuel pressure for a high-pressure component, in particular the common rail, the injector and / or the individual reservoir, having at least one high-pressure sensor measuring the fuel pressure. According to the invention, provision is made for a defect in the high-pressuresensor to be detected in that a check is made as to whether magnitude of the high-pressure control deviation (ep) during a predetermined time interval (tLimit1 SD, tLimit2 SD, tLimit3 SD ) exceeds a predetermined limiting value (eLimit1 SD, eLimit2 SD , eLimit3 SD ) .

Description

Technical field [0001] The present invention relates to a method for operating an internal combustion engine having a motor with a certain number of cylinders and an injection system with high-pressure components, especially an injection system with a common rail, the injection system having a certain number of The injector of the cylinder, in particular, a single reservoir is allocated to the injector, and the single reservoir is configured to provide the injector with fuel from the common rail. In addition, the method has the following steps: [0002] -Injecting fuel from the common rail into the cylinder by means of an injector; [0003] -Determine the fuel pressure with at least one high-pressure sensor that detects the fuel pressure for the high-pressure components, in particular the common rail, the injector and / or the single reservoir. [0004] The invention also relates to a device for controlling and / or regulating an internal combustion engine, which has a motor regulator a...

Claims

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Application Information

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IPC IPC(8): F02D41/22F02D41/38F02M63/02
CPCF02D41/222F02D41/3863F02D2041/223F02D2041/227F02D2041/228F02D2200/0602F02M63/025F02M2200/40
Inventor A.德尔克
Owner ROLLS ROYCE SOLUTIONS GMBH
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