Ignition and Combustion Characteristics of Wall-Impinging Sprays Injected by Group-Hole Nozzles for Direct-Injection Diesel Engines

2008 ◽  
Vol 1 (1) ◽  
pp. 1205-1219 ◽  
Author(s):  
Seoksu Moon ◽  
Jian Gao ◽  
Keiya Nishida ◽  
Yuhei Matsumoto ◽  
Yuyin Zhang
Keyword(s):  
Diesel Engines ◽  
Direct Injection ◽  
Combustion Characteristics ◽  
Ignition And Combustion ◽  
Impinging Sprays

Flow and Combustion in a Transparent 1.9 Litre Direct Injection Diesel Engine

1994 ◽  
Vol 208 (3) ◽  
pp. 191-205 ◽  
Author(s):  
C Arcoumanis ◽  
J H Whitelaw ◽  
W Hentschel ◽  
K-P Schindler
Keyword(s):  
Diesel Engines ◽  
Laser Diagnostics ◽  
Direct Injection ◽  
Computer Code ◽  
Operating Conditions ◽  
Auto Ignition ◽  
Sufficient Detail ◽  
Generating Capacity ◽  
Ignition And Combustion ◽  
Cylinder Flow

Two identical 1.9 litre direct injection (DI) diesel engines having optical access for application of laser diagnostics were operated at Volkswagen and Imperial College as part of the European programme (IDEA) on diesel engines. A variety of complementary laser-based techniques were used to characterize the flow-generating capacity of the intake system under steady flow conditions, the in-cylinder flow during induction and compression as well as the spray development, auto-ignition and combustion under three typical engine operating conditions. The most important results of this programme are presented and discussed here in view of their implications for improved combustion and reduction of exhaust emissions in small direct injection diesel engines, through better matching of the spray characteristics with the in-cylinder flow as a function of engine speed and load. The results were obtained in sufficient detail to allow validation of the multi-dimensional computer code developed within the IDEA programme.

scholarly journals Ignition and combustion development for high speed direct injection diesel engines under low temperature cold start conditions

Fuel ◽  
2011 ◽  
Vol 90 (4) ◽  
pp. 1556-1566 ◽  
Author(s):  
J.V. Pastor ◽  
J.M. García-Oliver ◽  
J.M. Pastor ◽  
J.G. Ramírez-Hernández
Keyword(s):  
Low Temperature ◽  
Diesel Engines ◽  
High Speed ◽  
Direct Injection ◽  
Cold Start ◽  
Ignition And Combustion

scholarly journals Influence of nozzle geometry on ignition and combustion for high-speed direct injection diesel engines under cold start conditions

Fuel ◽  
2011 ◽  
Vol 90 (11) ◽  
pp. 3359-3368 ◽  
Author(s):  
J.M. Desantes ◽  
J.M. García-Oliver ◽  
J.M. Pastor ◽  
J.G. Ramírez-Hernández
Keyword(s):  
Diesel Engines ◽  
High Speed ◽  
Direct Injection ◽  
Cold Start ◽  
Nozzle Geometry ◽  
Ignition And Combustion

Effect of altitude conditions on combustion and performance of a turbocharged direct-injection diesel engine

2021 ◽  
pp. 095440702110262
Author(s):  
Zhentao Liu ◽  
Jinlong Liu
Keyword(s):  
Diesel Engine ◽  
High Altitude ◽  
Diesel Engines ◽  
Direct Injection ◽  
Pressure Rise ◽  
Ambient Conditions ◽  
Allowable Limit ◽  
Spray Formation ◽  
Direct Injection Diesel Engine ◽  
And Performance

Market globalization necessitates the development of heavy duty diesel engines that can operate at altitudes up to 5000 m without significant performance deterioration. But the current scenario is that existing studies on high altitude effects are still not sufficient or detailed enough to take effective measures. This study applied a single cylinder direct injection diesel engine with simulated boosting pressure to investigate the performance degradation at high altitude, with the aim of adding more knowledge to the literature. Such a research engine was conducted at constant speed and injection strategy but different ambient conditions from sea level to 5000 m in altitude. The results indicated the effects of altitude on engine combustion and performance can be summarized as two aspects. First comes the extended ignition delay at high altitude, which would raise the rate of pressure rise to a point that can exceed the maximum allowable limit and therefore shorten the engine lifespan. The other disadvantage of high-altitude operation is the reduced excess air ratio and gas density inside cylinder. Worsened spray formation and mixture preparation, together with insufficient and late oxidation, would result in reduced engine efficiency, increased emissions, and power loss. The combustion and performance deteriorations were noticeable when the engine was operated above 4000 m in altitude. All these findings support the need for further fundamental investigations of in-cylinder activities of diesel engines working at plateau regions.

Experimental facility and methodology for systematic studies of cold startability in direct injection Diesel engines

2009 ◽  
Vol 20 (9) ◽  
pp. 095109 ◽  
Author(s):  
J V Pastor ◽  
J M García-Oliver ◽  
J M Pastor ◽  
J G Ramírez-Hernández
Keyword(s):  
Diesel Engines ◽  
Direct Injection ◽  
Experimental Facility

The Development of 1.0 Liter and 1.4 Liter Three-Cylinder Direct-Injection Diesel Engines for Industrial Use

1989 ◽  
Author(s):  
Manabu Furubayashi ◽  
Eiichi Teramoto ◽  
Saburo Kase ◽  
Isao Konagaya ◽  
Kenichi Ueda ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Direct Injection ◽  
Industrial Use

Effect of Injection Timing on Combustion Characteristics of a DI Diesel Engine Fuelled with Pistacia chinensis Bunge Seed Biodiesel

2012 ◽  
Vol 614-615 ◽  
pp. 337-342
Author(s):  
Li Luo ◽  
Bin Xu ◽  
Zhi Hao Ma ◽  
Jian Wu ◽  
Ming Li
Keyword(s):  
Combustion Temperature ◽  
Fuel Injection ◽  
Direct Injection ◽  
Combustion Characteristics ◽  
Injection Timing ◽  
Brake Specific Fuel Consumption ◽  
Cylinder Pressure ◽  
Combustion Duration ◽  
Di Diesel Engine ◽  
Maximum Combustion Temperature

In this study, the effect of injection timing on combustion characteristics of a direct injection, electronically controlled, high pressure, common rail, turbocharged and intercooled engine fuelled with different pistacia chinensis bunge seed biodiesel/diesel blends has been experimentally investigated. The results indicated that brake specific fuel consumption reduces with the increasing of fuel injection advance angle and enhances with the increasing of biodiesel content in the blends. The peak of cylinder pressure and maximum combustion temperature increase evidently with the increment of fuel injection advance angle. However, the combustion of biodiesel blends starts earlier than diesel at the same fuel injection advance angle. At both conditions, the combustion duration and the peak of heat release rate are insensitive to the changing of injection timing.

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