A Fuel Sensitive Ignition Delay Model for Direct Injection Diesel Engine Operating under EGR Diluted Conditions University of Windsor

Format:

Conference/Event

Author/Creator:

Yang, Yang, author.

Contributor:

Han, Xiaoye

Ting, David

Wang, Meiping

Yu, Shui

Yu, Xiao

Zheng, Ming

Conference Name:

WCX World Congress Experience (2018-04-10 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2018

Summary:

This empirical work investigates the impacts of thermodynamic parameters, such as pressure and temperature, and fuel properties, such as fuel Cetane number and aromatic contents on ignition delay in diesel engines. Systematic tests are conducted on a single-cylinder research engine to evaluate the ignition delay changes due to the fuel property differences at low, medium and high engine loads under different EGR dilution ratios. The test fuels offer a range of Cetane numbers from 28 to 54.2 and aromatic contents volume ratios from 19.4% to 46.6%. The experimental results of ignition delays are used to derive an ignition delay model modified from Arrhenius' expression. Following the same format of Arrhenius' equation, the model incorporates the pressure and temperature effects, and further includes the impacts of intake oxygen concentration, fuel Cetane number and aromatic contents volume ratio on the ignition delay. The model is verified by results obtained under different engine loads and with different fuels. It is shown from the results that the inclusion of oxygen concentration improves the accuracy in predicting the ignition delays in the EGR diluted conditions. The inclusion of Cetane number and aromatic contents in the ignition delay model improves the adaptivity of the model, so that it can be used to predict the ignition delay of different fuels with improved accuracy

Notes:

Vendor supplied data

Publisher Number:

2018-01-0231

Access Restriction:

Restricted for use by site license