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Control method of diesel engine intake swirl

A control method, diesel engine technology, applied in electrical control, engine control, fuel injection control, etc., can solve the problem of not controlling the eddy current intensity quickly and accurately, and achieve the effect of improving control accuracy and response speed

Inactive Publication Date: 2009-01-14
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no control method for the diesel engine intake swirl that can quickly and accurately control the swirl intensity to meet the mixed gas combustion requirements of the diesel engine under various operating conditions

Method used

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  • Control method of diesel engine intake swirl
  • Control method of diesel engine intake swirl
  • Control method of diesel engine intake swirl

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Effect test

Embodiment 1

[0050] Such as figure 1 As shown, the control system of the diesel engine intake vortex that implements the control method of the present invention comprises ECU i.e. electronic control unit 1, engine speed information acquisition unit (not shown in the figure), engine injection fuel quantity information acquisition unit (not shown in the figure) drawn), a vortex valve controller consisting of vacuum valve 2 and variable vortex vacuum valve 3, a vortex valve pull rod 4, a vortex valve position sensor 7 and a vortex valve 6 assembled in the intake manifold 5, the electric The control unit 1 receives the engine speed f1 from the engine speed information collection unit and the injection oil quantity f2 from the engine injection oil quantity information collection unit, and outputs the swirl valve control amount to the vacuum valve 2, and the vacuum valve 2 further controls the variable swirl vacuum valve 3, The opening of the swirl valve 6 is controlled by the swirl valve pull r...

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Abstract

The invention aims at providing a control method of air inletting vortex of a diesel engine; the method can control the vortex intensity fast and accurately so as to meet the requirement of the diesel engine under various working conditions; the control method of the invention essentially comprises the following steps: the control amount of open-loop and the control amount of closed-loop of the vortex are determined according to the operating working condition of the engine and the control mode of the vortex is selected; if the open-loop control mode is adopted, the control amount of the open-loop is directly used for adjusting a vortex valve; if the control modes of the open-loop and the closed-loop are adopted, the control amount of the open-loop and the control amount of the closed-loop are added to adjust the vortex valve. The method combines the control mode of the open-loop and the control mode of the closed-loop; and a self-adapting calculating method is adopted in the control modes of the open-loop and the closed-loop, thus leading the vortex intensity to response the requirement of mixed fuel gas burning fast and accurately being compatible with the power, economic efficiency and environmental protection requirement of the engine, and guaranteeing good comfortableness of driving and being applicable to the requirement of the modern automobile.

Description

technical field [0001] The invention relates to a method for controlling the intake vortex of a diesel engine. Background technique [0002] The diesel engine is a compression ignition engine. During the compression ignition process, the fuel oil jet is mixed with air to form a combustible mixture. As the temperature of the compressed air in the cylinder rises, the combustible mixture is compressed and ignited. A well-mixed mixture can make the combustion complete, reduce the generation of pollutants such as soot particles, and is also conducive to improving the combustion efficiency of fuel, and improving the power and economy of diesel engines. However, it is difficult to ensure good mixing of fuel and air only by the atomization of diesel oil. Generally, measures such as air vortex are needed to promote the mixing of fuel and air. The vortex will affect the uniformity of the fuel oil jet mixed with the air and the distribution in various areas in the cylinder, thereby af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/04F02D41/14F02D41/24
CPCY02T10/146F02D2041/0022Y02T10/42F02B31/06F02D2041/142F02D2041/0015F02D2041/141F02D41/1402F02D41/0002Y02T10/12Y02T10/40
Inventor 周重光吴培周王秋霞
Owner CHERY AUTOMOBILE CO LTD
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