高压共轨系统不同温度下喷油参数修正计算

Translated title of the contribution: Calculation Correction of Fuel Injection Parameters at Different Fuel Temperatures of High Pressure Common Rail System

Jun Wang*, Youtong Zhang, Yi Jin, Shu Han

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In order to demonstrate the influence of fuel temperature variation on fuel injection quantity of high pressure common rail system (HPCR), the calculation correction of fuel injection parameters at different temperatures is conducted. Firstly, based on a brief analysis of the characteristic of fuel flow and heat transfer of the HPCR system and according to the working temperature range of diesel engine, a method to determine the reference temperature is put forward. Then, the formula for calculating the corrected quantity of fuel injection quantity and injection pressure is provided by using the method of fluid heat transfer calculation. Finally, combined with real cases, basic MAP of fuel injection pressure and injection quantity under basic temperature is given and corrected MAP of fuel injection pressure and injection quantity is calculated. The results show that the relative error between the calculation and measurement value of fuel injection correction at 50℃ is less than 14%, and that between the calculated value and the predicted value at 80℃ is less than 9%, which shows the calculation method of fuel injection parameter correction is effective.

Translated title of the contributionCalculation Correction of Fuel Injection Parameters at Different Fuel Temperatures of High Pressure Common Rail System
Original languageChinese (Traditional)
Pages (from-to)508-513
Number of pages6
JournalQiche Gongcheng/Automotive Engineering
Volume41
Issue number5
DOIs
Publication statusPublished - 25 May 2019

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