Piston Bowl Geometry Effects on Combustion Development in a High-Speed Light-Duty Diesel Engine

2019 ◽  
Author(s):  
Federico Perini ◽  
Stephen Busch ◽  
Kan Zha ◽  
Rolf Reitz ◽  
Eric Kurtz
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Piston Bowl ◽  
Light Duty ◽  
Geometry Effects

scholarly journals Characterization of Flow Asymmetry During the Compression Stroke Using Swirl-Plane PIV in a Light-Duty Optical Diesel Engine with the Re-entrant Piston Bowl Geometry

2015 ◽  
Vol 8 (4) ◽  
pp. 1837-1855 ◽  
Author(s):  
Kan Zha ◽  
Stephen Busch ◽  
Paul C. Miles ◽  
Sameera Wijeyakulasuriya ◽  
Saurav Mitra ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Piston Bowl ◽  
Compression Stroke ◽  
Flow Asymmetry ◽  
Light Duty

Effects of B20 on Combustion, Emissions and Performance of a Light-Duty Diesel Engine

2009 ◽  
Author(s):  
Amy M. Peterson ◽  
Po-I Lee ◽  
Ming-Chia Lai ◽  
Ming-Cheng Wu ◽  
Craig L. DiMaggio
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Combustion Noise ◽  
Low Temperature Combustion ◽  
Performance And Emission ◽  
Ultra Low Sulfur Diesel ◽  
White Grease ◽  
Light Duty ◽  
Di Diesel Engine ◽  
And Performance

This paper compares 20% bio-diesel (B20-choice white grease) fuel with baseline ultra low sulfur diesel (ULSD) fuel on the performance of combustion and emissions of a light-duty 4-cylinder 2.8-liter common-rail DI diesel engine. The results show that operating the engine in the Low Temperature Combustion (LTC) regime produces lower PM and NOx with a slight penalty in fuel consumption, THC, and CO emissions. B20, in general, produces less soot. A slight increase in NOx emissions is shown with B20 compared to ULSD, with an exception at the high speed point where B20 has lower NOx values. In addition, the performance and emission characteristics are investigated as a function of the ECU injection strategy. The addition of pilot injections is found to effectively reduce combustion noise and extends the injection retard window to reach LTC combustion regimes with acceptable noise level for LD diesel engines.

Cycle-to-Cycle NO and NOx Emissions From a HSDI Diesel Engine

2018 ◽  
Author(s):  
Felix Leach ◽  
Martin Davy ◽  
Mark Peckham
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Nox Emissions ◽  
Nox Formation ◽  
Reduction Techniques ◽  
Light Duty ◽  
Peak Cylinder Pressure ◽  
Crank Angle ◽  
The Difference ◽  
Hsdi Diesel Engine

Engine-out NOx emissions from diesel engines continue to be a major topic of research interest. While substantial understanding has been obtained of engine-out (i.e. before any aftertreatment) NOx formation and reduction techniques, not least EGR which is now well established and fitted to production vehicles, much less data are available on cycle resolved NOx emissions. In this work, crank-angle resolved NO and NOx measurements have been taken from a high-speed light duty diesel engine at test conditions both with and without EGR. These have been combined with 1D data of exhaust flow and this used to form a mass average of NO and NOx emissions per cycle. These results have been compared with combustion data and other emissions. The results show that there is a very strong correlation (R2 > 0.95) between the NOx emitted per cycle and the peak cylinder pressure of that cycle. In addition, the crank-angle resolved NO and NOx measurements also reveal that there is a difference in NO : NO2 ratio (where NO2 is assumed to be the difference between NO and NOx) during the exhaust period, with proportionally more NO2 being emitted during the blowdown period compared to the rest of the exhaust stroke.

Piston Bowl Geometry Effects on Gasoline Compression Ignition in a Heavy-Duty Diesel Engine

2021 ◽  
Author(s):  
Meng Tang ◽  
Yuanjiang Pei ◽  
Hengjie Guo ◽  
Yu Zhang ◽  
Roberto Torelli ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Compression Ignition ◽  
Heavy Duty ◽  
Piston Bowl ◽  
Heavy Duty Diesel Engine ◽  
Geometry Effects ◽  
Heavy Duty Diesel

Effect of Piston Bowl Shape and Swirl Ratio on Engine Heat Transfer in a Light-Duty Diesel Engine

2014 ◽  
Author(s):  
Helgi Skuli Fridriksson ◽  
Martin Tuner ◽  
Oivind Andersson ◽  
Bengt Sunden ◽  
Hakan Persson ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Diesel Engine ◽  
Swirl Ratio ◽  
Piston Bowl ◽  
Light Duty
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