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Electrojet engine variable working displacement control technique

A control technology, displacement controller technology, which is applied in the control field of electronically controlled fuel injection internal combustion engines, can solve problems such as unrealizable and non-operable, and achieve the effects of reducing cylinder wear, stable operation, and reducing emission pollution

Inactive Publication Date: 2008-07-16
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no specific technical solutions for the technical contents such as what are the specific rules, under what working conditions should cycle closed cylinder be used, and how to realize regular cycle closed cylinder, so it is not operable and cannot be realized.

Method used

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  • Electrojet engine variable working displacement control technique
  • Electrojet engine variable working displacement control technique
  • Electrojet engine variable working displacement control technique

Examples

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Effect test

Embodiment 1

[0043] Simple control of 4-cylinder engine, 2 input parameters, 3 working displacements

[0044] This embodiment has only 50%, 75%, 100% three kinds of working displacements, and what table 1 shows is the variable working displacement variation rule (fuel injection rule) of embodiment 1. Its fuel injection (working) sequence is 1-3-4-2. This fuel injection rule takes 4 working cycles as a control period. The 4 cylinders are divided into two groups, the 1st and 4th cylinders are a group, and the 2nd and 3rd cylinders are a group. The numbers 1, 2, 3, and 4 in the table are the cylinder numbers, and the numbers with "○" are the cylinders with fuel injection stopped. The working displacement percentage is the ratio of the actual working displacement to the design displacement. It is equal to the ratio of the number of actual fuel injection (work) to the total number of total work (fuel injection) (16 times) in this cycle (4 cycles). For example, in the second line of the tabl...

Embodiment 2

[0054] Control of 4-cylinder engine, 4 input parameters, and 5 working displacements.

[0055] This embodiment has five working displacements of 50%, 62.5%, 75%, 87.5%, and 100%. Table 3 is the variable working displacement fuel injection law (pattern) table of embodiment 2. Similar to Table 1, the working displacement increases by 87.5% between 100% and 75% working displacement, and increases by 62.5% between 75% and 50% working displacement.

[0056] Its general rules are:

[0057] 1. Divide all 4 cylinders of the engine into two groups equally, each group has 2 cylinders.

[0058] 2. The 1st and 4th cylinders of the inline 4-cylinder engine are one group, and the 2nd and 3rd cylinders are another group;

[0059] 3. Set 4 working cycles as a control cycle;

[0060] 4. Design cylinder oil injection or pause cycle alternately. In one control cycle, the suspended cylinders should be as uniform as possible, and the same cylinder should not be suspended for more than one cycl...

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Abstract

The present invention provides an electronic injection engine variable working displacement volume control device. It includes two portions of fuel injection control mode and engine injection control device. Said fuel injection control mode includes two portions of fuel injection mode under the condition of different working displacement volumes and control logic mode under the different working conditions. The injection control device is composed of two portions of injector control additional circuit and variable working displacement volume controller.

Description

technical field [0001] The invention relates to a control technology of an electronically controlled fuel injection internal combustion engine. Background technique [0002] Most of the design displacements of existing engines are fixed values. Regardless of the load during operation, all displacements are involved in the work. According to the principle of internal combustion engine, when the load rate is small, the specific fuel consumption is high, and the emission pollution is relatively large; when the load rate is large, the specific fuel consumption is small, and the emission pollution is also small. For example, gasoline engines generally have the lowest specific fuel consumption and least emission pollution when the load rate is about 80-90%. The power of the engine installed on the car is equipped according to extreme working conditions such as the maximum speed at full load, or the maximum gradient. In most usage situations, such as driving in urban areas, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/26F02D17/02
Inventor 韩宗奇夏怀成金海龙
Owner YANSHAN UNIV
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