Method for controlling combustion in an internal combustion engine and the internal combustion engine

A technology for internal combustion engines and control devices, applied in the direction of adding non-fuel substances to fuel, electrical control, engine control, etc., can solve the problems that parameters cannot be fully pre-controlled, high fluid consumption, etc., to improve exhaust gas temperature regulations and reduce fluid consumption , the effect of reducing the amount of fluid maintained

Active Publication Date: 2016-05-11
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These influencing parameters cannot be adequately pre-controlled or otherwise detected
Therefore there is always a need to maintain a large volume of fluid and the fluid consumption increases

Method used

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  • Method for controlling combustion in an internal combustion engine and the internal combustion engine
  • Method for controlling combustion in an internal combustion engine and the internal combustion engine
  • Method for controlling combustion in an internal combustion engine and the internal combustion engine

Examples

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Embodiment Construction

[0035] figure 1 A schematic diagram of a fluid ejection system 1 is shown. The fluid injection system 1 has a fluid system 10 . Fluid system 10 includes a fluid pump 11 , which maintains a fluid or delivers fluid at a predeterminable pressure into fluid system 10 . Furthermore, the fluid pump 11 may have a fluid reservoir (not shown) for storing a predeterminable amount of fluid. The fluid has been pressurized in the fluid system 10 at which pressure the fluid is injected into the fuel system 50 or directly into the cylinder 30 .

[0036] Fluid is directed in fluid system 10 through fluid tube 12 to fluid injector 13 . In particular, fluid injector 13 can be designed as a throttle valve. exist figure 1 In the embodiment shown, the fluid injector 13 connects the fluid system 10 to the intake line 21 of the intake system of the cylinder 30 . Here, in this embodiment, the intake manifold 21 is a common intake manifold or a community of an internal combustion engine, in part...

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PUM

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Abstract

In a method for controlling combustion in an internal combustion engine with at least one cylinder (30), knock intensity in the cylinder (30) by means of a knock sensor (37) is detected. A predetermined setpoint ignition angle of the cylinder (30) corresponding to a target exhaust gas temperature is adjusted, and a fluid admixture in the cylinder (30) is controlled in dependence on the detected knock intensity.

Description

technical field [0001] The invention relates to a method for controlling combustion in an internal combustion engine and to an internal combustion engine with combustion controlled in this way. Background technique [0002] Knocking combustion can occur in internal combustion engines, for example in Otto engines, especially in highly charged Otto engines. This can lead to reduced power and lower efficiency when burning. In extreme cases this may even lead to component damage. [0003] In order to counteract or prevent knocking, it is known to retard the ignition angle of the cylinders backwards. However, this results in a deterioration of the combustion efficiency and an increase in the exhaust gas temperature. In order to counteract the high thermal load of the exhaust system, the air-fuel mixture injected into the cylinders must be enriched if necessary, ie a higher fuel ratio must be set. However fuel consumption, power and emissions may be worsened as a result. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D43/00
CPCF02D19/12F02D35/027F02D41/0025F02D41/008F02D41/1446F02M25/0227F02M25/0228F02P5/152
Inventor M·伯姆S·施马德勒
Owner BAYERISCHE MOTOREN WERKE AG
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