Characterization of Mixture Formation Processes in DI Gasoline Engine Sprays with Split Injection Strategy via Laser Absorption and Scattering (LAS) Technique

2003 ◽  
Author(s):  
Tie Li ◽  
Hiroyuki Hiroyasu ◽  
Yuyin Zhang ◽  
Keiya Nishida
Keyword(s):  
Gasoline Engine ◽  
Formation Processes ◽  
Mixture Formation ◽  
Split Injection ◽  
Injection Strategy ◽  
Laser Absorption

Effect of Conical Spray and Multi-Hole Spray on Gasoline Engine Mixture Formation and Combustion Performance Based on Different Injection Strategies

2020 ◽  
Vol 143 (6) ◽  
Author(s):  
Shengli Wei ◽  
Zhiqing Yu ◽  
Zhilei Song ◽  
Fan Yang ◽  
Chengcheng Wu
Keyword(s):  
Gasoline Engine ◽  
Direct Injection ◽  
Mixture Distribution ◽  
Gasoline Direct Injection ◽  
Injection Timing ◽  
Mixture Formation ◽  
Injection Strategy ◽  
Gdi Engine ◽  
The Difference ◽  
Injection Strategies

Abstract This article presents a numerical investigation carried out to determine the effects of second and third injection timing on combustion characteristics and mixture formation of a gasoline direct injection (GDI) engine by comparing conical spray against multihole spray. The results showed that at the engine 80% full load of 2000 r/min, the difference in mixture distribution between the two sprays was obvious with double and triple injection strategies. With the second injection timing from 140 deg CA delay to 170 deg CA, the in-cylinder pressure, the in-cylinder temperature, and the heat release rate of the conical spray increased by 20.8%, 9.8%, and 30.7% and that of the multihole spray decreased by 30.7%, 13.6%, and 37.8%. The delay of the injection time reduced the performance of the engine with the multihole spray, and the performance of the multihole spray was obviously in the simulation of the triple injection strategy. However, for the conical spray, the application of the triple injection strategy increased the temperature and the pressure compared with the double injection strategy.

scholarly journals Near-nozzle microscopic characterization of diesel spray under cold start conditions with split injection strategy

Fuel ◽  
2016 ◽  
Vol 181 ◽  
pp. 366-375 ◽  
Author(s):  
Ziman Wang ◽  
Yanfei Li ◽  
Chongming Wang ◽  
Hongming Xu ◽  
Miroslaw L. Wyszynski
Keyword(s):  
Cold Start ◽  
Diesel Spray ◽  
Split Injection ◽  
Injection Strategy

Microscopic and macroscopic characterization of spray impingement under flash boiling conditions with the application of split injection strategy

Fuel ◽  
2018 ◽  
Vol 212 ◽  
pp. 315-325 ◽  
Author(s):  
Ziman Wang ◽  
Yanfei Li ◽  
Hengjie Guo ◽  
Chongming Wang ◽  
Hongming Xu
Keyword(s):  
Split Injection ◽  
Injection Strategy ◽  
Spray Impingement ◽  
Flash Boiling
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