New Downsized Diesel Engine Concept with HCCI Combustion at High Load Conditions

2015 ◽  
Author(s):  
Andrey Kuleshov ◽  
Alexey Kuleshov ◽  
Khamid Mahkamov ◽  
Timo Janhunen ◽  
Victor Akimov
Keyword(s):  
Diesel Engine ◽  
High Load ◽  
Hcci Combustion ◽  
Engine Concept ◽  
Load Conditions

Cause of Exhaust Smoke and Its Reduction Methods in an HSDI Diesel Engine Under High-Speed and High-Load Conditions

2002 ◽  
Author(s):  
Yoshihiro Hotta ◽  
Kiyomi Nakakita ◽  
Takayuki Fuyuto ◽  
Minaji Inayoshi ◽  
Kiyoshi Fujiwara ◽  
...  
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
High Load ◽  
Reduction Methods ◽  
Hsdi Diesel Engine ◽  
Load Conditions

Split diesel injection effect on knocking of natural gas/diesel dual-fuel engine at high load conditions

2020 ◽  
Vol 279 ◽  
pp. 115828
Author(s):  
Amin Yousefi ◽  
Hongsheng Guo ◽  
Madjid Birouk
Keyword(s):  
Natural Gas ◽  
High Load ◽  
Dual Fuel ◽  
Diesel Injection ◽  
Injection Effect ◽  
Load Conditions

scholarly journals Effects of multiple injections on combustion and emissions in a heavy-duty diesel engine at high load and low speed

2020 ◽  
Vol 12 (12) ◽  
pp. 168781402098462
Author(s):  
Yingying Lu ◽  
Yize Liu
Keyword(s):  
Diesel Engine ◽  
Single Injection ◽  
High Load ◽  
Post Injection ◽  
Heavy Duty ◽  
Low Speed ◽  
Multiple Injections ◽  
Heavy Duty Diesel Engine ◽  
Main Injection ◽  
Heavy Duty Diesel

Advanced multiple injection strategies have been suggested for compression ignition engines in order to meet the increasingly stringent emission regulations. Experiments and simulations were used to study effects of the main-injection mode (times), the post-injection proportion, and timing on combustion and emissions in a heavy-duty diesel engine at high load and constant low speed. The results reveal the following. The NOx emissions of 1main+1post, 2main+1post, and 3main+1post injections are all lower than those of single injection; the higher the number of main-injection pluses, the lower the NOx emissions. Enough main-post injection interval is needed to ensure post and main injections are relatively independent to entrain more fresh air to decrease the soot. Over-retarded post-injection timing tends to increase the soot due to the lower in-cylinder temperature. The combined effects of formation and oxidation determine the final soot. To gain the best trade-off of NOx and soot, compared with single injection, for the three multiple injections, the lowest soot emissions are gained at post-injection proportions of 15% and post-injection timings of 25°, 30°, and 35° CA ATDC, with soot reductions of 26.7%, −34.5%, and −112.8%, and NOx reductions of 5.88%, 21.2%, and 40.3%, respectively, for 1main+1post, 2main+1post, and 3main+1post injections.

A Small Displacement DI Diesel Engine Concept for High Fuel Economy Vehicles

1997 ◽  
Author(s):  
David L. Boggs ◽  
Richard C. Belaire ◽  
Bernd Bartunek ◽  
Manfred Dürnholz ◽  
Hermann-Josef Ecker
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Small Displacement ◽  
Di Diesel Engine ◽  
Engine Concept
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