Optimization of Injection of Pure Rape Seed Oil in modern Diesel Engines with Direct-Injection

2007 ◽  
Author(s):  
Markus Lüft ◽  
Sören Bernhardt ◽  
Amin Velji ◽  
Ulrich Spicher
Keyword(s):  
Diesel Engines ◽  
Seed Oil ◽  
Direct Injection ◽  
Rape Seed

Effect of Improving Spray Development and Evaporation on Emissions from DI Diesel Engines Fueled with Straight Rape-Seed Oil

2015 ◽  
Author(s):  
Yoshiyuki Kidoguchi ◽  
Jumpei Nozaki ◽  
Yasufumi Hieda ◽  
Koki Shimizu ◽  
Yuzuru Nada
Keyword(s):  
Diesel Engines ◽  
Seed Oil ◽  
Rape Seed

1002 Effect of EGR on Emissions from DI Diesel Engines Fueled with Rape-seed Oil

2015 ◽  
Vol 2015.53 (0) ◽  
pp. _1002-1_-_1002-2_
Author(s):  
Yasufumi HIEDA ◽  
Jumpei NOZAKI ◽  
Yuzuru NADA ◽  
Yoshiyuki KIDOGUCHI
Keyword(s):  
Diesel Engines ◽  
Seed Oil ◽  
Rape Seed

Venturi tube and single pipe inlet as gas distributors in hydrogenation of rape seed oil

1987 ◽  
Vol 52 (12) ◽  
pp. 2876-2885
Author(s):  
Milan Rylek ◽  
Petr Svoboda ◽  
Jiří Souček
Keyword(s):  
Seed Oil ◽  
Venturi Tube ◽  
Stirred Tank ◽  
Hydrogenation Rate ◽  
Rape Seed ◽  
Tank Reactor ◽  
Scale Unit ◽  
Single Pipe ◽  
Pipe Inlet ◽  
Made In

The effect of hydrogenation conditions on rate of hydrogenation of rape seed oil was studied in a laboratory stirred tank reactor of 250 ml volume, with nickel on kieselguhr catalyst within the range of conditions (150 ⪬ t(°C) ⪬ 190), (0.1 ⪬ P(MPa) ⪬ 1.0), and (0.01 ⪬ cNi(%) ⪬ 0.37). On the basis of these results a comparison of the effect of a Venturi tube and single pipe gas inlet as gas distributors on hydrogenation rate was made in a bench scale unit of 5 l volume.

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.

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