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Accurate calculation method for actual fuel injection quantity of fuel injector

An accurate calculation and fuel injector technology, which is applied in calculation, instruments, machines/engines, etc., can solve the problems of no calculation of the actual injection volume of the fuel injector, and only the target value of the injection volume of the fuel injector.

Pending Publication Date: 2019-08-02
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In actual use, the injection volume of the fuel injector only has the target value, and there is no calculation for the actual injection volume of the fuel injector

Method used

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  • Accurate calculation method for actual fuel injection quantity of fuel injector
  • Accurate calculation method for actual fuel injection quantity of fuel injector

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Embodiment Construction

[0015] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0016] Unless expressly stated otherwise, throughout the specification and claims, the term "comprising" or its conjugations such as "comprising" or "comprising" and the like will be understood to include the stated elements or components, and Other elements or other components are not excluded.

[0017] like figure 1 shown, figure 1 It is a schematic flowchart of a method for accurately calculating the actual fuel injection quantity of a fuel injector according to an embodiment of the present invention; figure 2 It is a schematic diagram of the structure of the fuel injection system according to the method for accurately calculating the actual fuel injection quantity of the fuel injector according to an embodiment of...

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Abstract

The invention discloses an accurate calculation method for actual fuel injection quantity of a fuel injector. The method comprises the following steps: arranging a cylinder pressure sensor on a cylinder, the cylinder pressure sensor being used for detecting the pressure in the cylinder in real time; the ECU receiving the pressure value, monitored by the cylinder pressure sensor, in the air cylinder, and obtaining the difference between the pressure value in the air cylinder and the pressure value in the common rail pipe to obtain the front-back pressure difference value of the oil sprayer; andcalculating the actual fuel injection quantity of the fuel injector by using the front-back pressure difference of the fuel injector, the injection sectional area of the fuel injector and the power-on time of the fuel injector. Therefore, according to the method for accurately calculating the actual fuel injection quantity of the fuel injector, the actual fuel injection quantity of the fuel injector can be accurately calculated.

Description

technical field [0001] The invention relates to the technical field of fuel injectors, in particular to an accurate calculation method for the actual fuel injection quantity of the fuel injector. Background technique [0002] At present, the pressure on the common rail pipe (rail pressure) is often used on the engine as the injector inlet pressure, and the injector outlet pressure (in-cylinder pressure at the time of injection) is 0 by default. In actual use, the injection quantity of the injector has only the target value, and the actual injection quantity of the injector is not calculated. [0003] The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. SUMMARY OF THE INVENTION [0004] The purpose of the present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50F02B77/08
CPCF02B77/08G06F30/20
Inventor 刘星田淋瑕
Owner GUANGXI YUCHAI MASCH CO LTD
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