Abstract

In this paper, to realize the pressure stability control of high-pressure oil pipe, the dynamic differential equation of fuel oil inlet and outlet is established based on the theory of mass conservation. According to the change of the pressure in the high-pressure tubing, an optimization model is established to achieve precise control of the working time of each part of the high-pressure oil pipe.

Highlights

  • Fuel entering and ejecting high-pressure fuel pipe is the basis of many fuel engines

  • When the high-pressure fuel system is working, fuel enters the high-pressure fuel pipe from the oil inlet valve and ejects from the fuel injector at the other end. e intermittent working process of fuel entering and ejecting will lead to the change of the pressure in the highpressure oil pipe, which will cause the deviation of the quantity of fuel ejected, affect the working efficiency of the engine, and even cause the direct economic loss due to the fault [1, 2]; it is of great significance to reasonably control the pressure of the high-pressure oil pipe so as to stabilize the pressure in the pipe

  • A dynamic differential equation of fuel oil inlet and outlet is established based on the theory of mass conservation and a Matlab visual simulation tool is developed

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Summary

Introduction

Fuel entering and ejecting high-pressure fuel pipe is the basis of many fuel engines. When the high-pressure fuel system is working, fuel enters the high-pressure fuel pipe from the oil inlet valve and ejects from the fuel injector at the other end. Three questions are answered: (1) How to determine the oil supply time of the oneway oil inlet valve? The length of the inner cavity of the high-pressure oil pipe is 500 mm, the inner diameter is 10 mm, and the diameter of the small hole A at the oil supply inlet is 1.4 mm. When the injector is working, the injection rate from nozzle B to the outside is shown in Figure 2. e pressure provided by the high-pressure oil pump at inlet A is 160 MPa, and the initial pressure in the high-pressure oil pipe is 100 MPa

Literature Review
Symbols and Assumptions
Problem 1
Problem Solving
Problem 2
Problem 3
Model Validation
Model Evaluation
Future Work

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