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Determination of the injection start point of the injector of the internal combustion engine

An internal combustion engine and injector technology, which is applied in the directions of fuel injection control, fuel injection device, fuel injection device with oil reservoir, etc. The effect of accuracy

Active Publication Date: 2018-04-06
ROLLS ROYCE SOLUTIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This effect impairs the accuracy of determining the onset of injection and correspondingly the reproducibility of individual reservoir pressure analysis

Method used

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  • Determination of the injection start point of the injector of the internal combustion engine
  • Determination of the injection start point of the injector of the internal combustion engine
  • Determination of the injection start point of the injector of the internal combustion engine

Examples

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Embodiment Construction

[0040] figure 1 A schematic diagram of an exemplary embodiment of an internal combustion engine 1 is shown. The internal combustion engine 1 is preferably designed as a reciprocating piston motor. In a preferred embodiment, the internal combustion engine 1 is used to drive especially heavy vehicles on road or water, such as mining vehicles, trains (where the internal combustion engine 1 is incorporated in a locomotive or drive car) or ships. Likewise, the internal combustion engine 1 can be used to drive defensive vehicles, such as tanks. An embodiment of the internal combustion engine 1 can preferably also be stationary, for example for a stationary energy supply in standby current operation, continuous load operation or peak load operation, wherein the internal combustion engine 1 in this case preferably drives a generator. It is likewise possible to use the internal combustion engine 1 stationary for driving auxiliary units, for example fire pumps on drilling rigs. The i...

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Abstract

The invention relates to a method for determining the start of injection of an injector (11) of an internal combustion engine (1), comprising the steps of: time-resolved acquisition of individual accumulator pressure curves (p, 23) in a measurement interval; Determination of the test injection start point (TS) with the aid of the individual reservoir pressure curve (p, 23); the determination of the individual reservoir pressure curve (p, 23) in a predetermined test interval (Δi) before the test injection start point (TS) Trend ( 25 ); correcting the individual reservoir pressure curve ( p, 23 ) according to the trend ( 25 ), and determining the start of injection with the aid of the corrected individual reservoir pressure curve ( 27 ).

Description

technical field [0001] The invention relates to a method for determining the start of injection of an injector of an internal combustion engine, a controller for the internal combustion engine, and the internal combustion engine. Background technique [0002] A method for controlling and regulating an internal combustion engine is known from German publication DE 10 2009 056 381 A1, in which the injection start point of the injector is also determined, wherein the individual reservoir pressure of the injector is obtained, wherein the A representative injection start point and a detected injection start point, and wherein the reliability of the representative injection start point is confirmed based on the detected injection start point. In this case, the injectors for which the injection start point is determined are part of an injection system with a common strip, ie a common high-pressure accumulator, a so-called common rail injection system. A common high-pressure accumu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/38F02D41/26
CPCF02D41/3809F02D2041/1432F02D2041/286F02D2200/0602F02D2200/0618F02D2250/04F02M55/025F02M55/04F02M57/005F02M2200/40F02M63/0225F02D41/26F02D41/1401
Inventor M.瓦尔德A.梅尔F.姆利基M.施陶特R.格贝特
Owner ROLLS ROYCE SOLUTIONS GMBH