Study on the Fuel Spray and Combustion of the Variable Orifice Nozzle (VON) for Direct Injection Diesel Engines

2000 ◽  
Author(s):  
Toshiyuki Hasegawa ◽  
Hayato Maehara ◽  
Ryosuke Tanishige ◽  
Takao Iwasaki ◽  
Takashi Kobayashi ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Direct Injection ◽  
Fuel Spray

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.

A study on fuel spray of spark-ignited direct injection engine using laser image technology

1999 ◽  
Vol 13 (3) ◽  
pp. 286-293 ◽  
Author(s):  
Nae Hyun Lee ◽  
Jong Ho Park ◽  
Kyu Hoon Choi
Keyword(s):  
Direct Injection ◽  
Fuel Spray ◽  
Direct Injection Engine

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
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