Method and computer program product for operating internal combustion engine with different fuels

An internal combustion engine and fuel technology, applied in the direction of internal combustion piston engine, combustion engine, machine/engine, etc., can solve problems such as cost, increase system cost, and no identification, and achieve the effect of avoiding wrong setting and low cost

Active Publication Date: 2020-03-10
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantage in this case: Increased system costs by using a fuel type sensor
Another disadvantage is that according to existing regulations the exact functional capability of the fuel type sensor has to be monitored, which requires additional expenditure
[0011] The disadvantage of this method is that the fuel tank level sensor does not always reliably detect this during refueling with small fuel quantities
If such minimum refueling is carried out repeatedly, especially in the case of low fuel tank levels, it may happen that the fuel composition changes significantly, which is not detected and compensated by the fuel adaptation

Method used

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  • Method and computer program product for operating internal combustion engine with different fuels
  • Method and computer program product for operating internal combustion engine with different fuels
  • Method and computer program product for operating internal combustion engine with different fuels

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Embodiment Construction

[0037] figure 1 is shown for presenting the different fuels used to run the figure 2 The histogram 10 of the exhaust gas temperature for the internal combustion engine 20 is shown in FIG. The axis of abscissa forms the rotational speed axis 12 and the axis of ordinate forms the temperature axis 11 . The rotational speed axis 12 is divided into three rotational speed ranges 13.1, 13.2, 13.3, which are marked by double arrows. For each speed range 13.1, 13.2, 13.3, for six different fuels, at figure 2 The temperature 22 of the exhaust gas shown in is shown as a bar. These fuels are E25 14, E50 15, E75 16, AEAE 17, AEHC 18 and GNV. E25 14 corresponds to a fuel mixture with 75% gasoline and 25% ethanol, E50 15 corresponds to a fuel mixture with 50% gasoline and 50% ethanol each, and E75 16 corresponds to a fuel mixture with 25% gasoline and 75% ethanol Ethanol fuel mixture. AEAC 17 (Anhydrous Ethanol Fuel) refers to alcohol (ethanol) with a maximum water content of 0.4%, w...

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Abstract

A method and computer program product for operating an internal combustion engine with different fuels. The invention relates to a method for operating an internal combustion engine with different fuel types and/or different fuel mixtures and/or fuel mixtures of different mixing ratios. According to the invention, in the adaptation step of the fuel adaptation cycle, the exhaust gas temperature measured in an exhaust gas system of the internal combustion engine is measured; the measured exhaust gas temperature is compared with the modeled exhaust gas temperature; and one or more parameters forcontrolling and/or regulating the internal combustion engine are adjusted in the event of a deviation of the measured exhaust gas temperature from the modeled exhaust gas temperature such that the deviation between the modeled exhaust gas temperature and the measured exhaust gas temperature is reduced. The invention also relates to a computer program product for carrying out the method. The methodand the computer program product enable consumption-optimized and less harmful operation of an internal combustion engine designed to use different fuels.

Description

technical field [0001] The invention relates to a method for operating an internal combustion engine with different fuel types and / or different fuel mixtures and / or fuel mixtures in different mixing ratios, wherein the internal combustion engine is controlled by an engine control unit at least as a function of the desired fuel type , the expected fuel mixture and / or the expected mixing ratio of the fuel mixture to control and / or regulate, and wherein the modeled exhaust gas temperature of the internal combustion engine is based at least on the expected fuel type, the expected fuel mixture and / or or the expected mixing ratio of the fuel mixture and is modeled as a function of the current operating conditions of the internal combustion engine. [0002] The invention also relates to a computer program product for carrying out the method. Background technique [0003] Internal combustion engines based on gasoline engines are generally operated on fuels consisting of hydrocarbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D19/06F02D19/08
CPCF02D19/081F02D19/06F02D19/0602F02D19/0626F02D41/0025F02D41/1446F02D41/1447F02D2041/1433F02D19/0636F02D19/088F02D2200/0612Y02T10/30
Inventor A.鲁伊斯
Owner ROBERT BOSCH GMBH
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