Prediction of Pressure Fluctuations Inside an Automotive Fuel Rail System

Qin, Hu; Wu, Sean F.; Lai, Ming Chia; Stottler, S.; Raghupathi, R.

doi:10.4271/1999-01-0561

Cited by 8 publications

(3 citation statements)

References 1 publication

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“…Let us analyse the balance of the delivered and transmitted energy in the supply system [16,17,18]. To this end, let us consider a dependence of the energy delivered from the current source to the EFP (E del ) with the liquid movement energy in the fuel supply line (E trans ,):…”

Section: Theoretical Researchmentioning

confidence: 99%

A study of the output characteristics of electric fuel pumps during artificial fault simulation

Гриценко¹,

Shepelev²,

Burzev³

et al. 2021

FME Transactions

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The electric fuel pump (EFP) is one of the potential sources of fuel system failures. According to various data, the fuel system accounts for 25...50% of all failures. The most common reason for the impairment of the fuel system performance and, in particular, the failure of the fuel pump is the contamination of fuel with large or small particles, as well as the wear of the structural elements of the EFP. The purpose of the study is to determine the technical condition of electric fuel pumps of motor vehicle engines based on the use of testing technologies. The paper discusses theoretical and experimental studies of the fuel system of motor vehicle engines: the change in the current consumption rate of the EFP depending on the degree of contamination of series elements in the system and leaks in the injection unit of the EFP.

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Section: Theoretical Researchmentioning

confidence: 99%

A study of the output characteristics of electric fuel pumps during artificial fault simulation

Гриценко¹,

Shepelev²,

Burzev³

et al. 2021

FME Transactions

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“…According to the electro-injector shown in Figure 3, the numerical model of the electro-injector involves the continuity equations of the needle chamber and the control chamber and the equations of motion for the control valve, the needle and the control piston. [16][17][18] The continuity equation of the needle chamber is…”

Section: The Continuity Equation Of the Filling Valve Ismentioning

confidence: 99%

Study of the fluctuation in the cycle fuel injection quantity in a common-rail system for a heavy-duty vehicle diesel engine

Tian

Fan

Hayat

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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A common-rail system can satisfy both diesel engine emissions legislation and fuel economy by flexibly regulating the injection pressure, the injection timing, the injection duration and the injection rate. Variations in the parameters of the common-rail system influence the injection characteristics and lead to fluctuation in the cycle fuel injection quantity. This fluctuation in the cycle fuel injection quantity is very critical for the coherence and stability of the common-rail system and the diesel that it injects. A new numerical model of a diesel engine's common-rail system was developed in AMESim to investigate the cycle fuel injection quantity fluctuation. The predicted results of the rail pressure and the injection rate by the model are in excellent agreement with the experimental results obtained from a test bench. The influence law and the generation mechanism of the cycle fuel injection quantity fluctuation caused by variations in the different parameters are analysed in detail. Moreover, the quantitative percentages of fluctuation in the cycle fuel injection quantity are computed through analysis. The results show that the solenoid pre-tightening force, the orifice diameter of the outlet, the orifice diameter of the inlet and the needle lift are the four critical influential parameters of the common-rail system. Finally, a correlation analysis method was carried out on the cycle fuel injection quantity. The analysis results show that not only the first-order factors of the influential parameters but also the second-order factors which consider the interaction between the influential parameters have significant correlation with the cycle fuel injection quantity.

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“…Variation in the rail pressure however increases the variation in fuel delivery [2,3] and increases emissions output from the engine.…”

Section: Introductionmentioning

confidence: 99%

Analysis of pressure wave dynamics in fuel rail system

Alzahabi¹,

Schulz²

2008

The International Journal of Multiphysics

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Prediction of Pressure Fluctuations Inside an Automotive Fuel Rail System

Cited by 8 publications

References 1 publication

A study of the output characteristics of electric fuel pumps during artificial fault simulation

A study of the output characteristics of electric fuel pumps during artificial fault simulation

Study of the fluctuation in the cycle fuel injection quantity in a common-rail system for a heavy-duty vehicle diesel engine

Analysis of pressure wave dynamics in fuel rail system

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