Flow Field Measurements inside a Piston Bowl of a Heavy-Duty Diesel Engine

2011 ◽  
Author(s):  
Harri Hillamo ◽  
Teemu Anttinen ◽  
Ulf Aronsson ◽  
Clément Chartier ◽  
Oivind Andersson ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Flow Field ◽  
Field Measurements ◽  
Heavy Duty ◽  
Piston Bowl ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

A Computational Investigation of Piston Bowl Geometry and Injector Spray Pattern Effects on Gasoline Compression Ignition in a Heavy-Duty Diesel Engine

2019 ◽  
Author(s):  
Yu Zhang ◽  
Yuanjiang Pei ◽  
Meng Tang ◽  
Michael Traver
Keyword(s):  
Diesel Engine ◽  
Fuel Efficiency ◽  
Compression Ignition ◽  
Swirl Ratio ◽  
Heavy Duty ◽  
Load Range ◽  
Spray Pattern ◽  
Piston Bowl ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Abstract This study computationally investigates the potential of utilizing gasoline compression ignition (GCI) in a heavy-duty diesel engine to address a future ultra-low tailpipe NOx standard of 0.027 g/kWh while achieving high fuel efficiency. By conducting closed-cycle, full-geometry, 3-D computational fluid dynamics (CFD) combustion simulations, the effects of piston bowl geometry, injector spray pattern, and swirl ratio (SR) were investigated for a market gasoline. The simulations were performed at 1375 rpm over a load range from 5 to 15 bar BMEP. The engine compression ratio (CR) was increased from 15.7 used in previous work to 16.5 for this study. Two piston bowl concepts were studied with Design 1 attained by simply scaling from the baseline 15.7 CR piston bowl, and Design 2 exploring a wider and shallower combustion chamber design. The simulation results predicted that through a combination of the wider and shallower piston bowl design, a 14-hole injector spray pattern, and a swirl ratio of 1, Design 2 would lead to a 2–7% indicated specific fuel consumption (ISFC) improvement over the baseline by reducing the spray-wall interactions and lowering the in-cylinder heat transfer loss. Design 1 (10-hole and SR2) showed a more moderate ISFC reduction of 1–4% by increasing CR and the number of nozzle holes. The predicted fuel efficiency benefit of Design 2 was found to be more pronounced at low to medium loads.

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

Optimization of Piston Bowl Geometry for a Low Emission Heavy-Duty Diesel Engine

2020 ◽  
Author(s):  
Zexian Guo ◽  
Xin He ◽  
Yuanjiang Pei ◽  
Chen-Teng Chang ◽  
Peng Wang ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heavy Duty ◽  
Piston Bowl ◽  
Low Emission ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

scholarly journals Numerical Investigation on the Effect of Piston Bowl Geometry on Combustion Characteristics of a Heavy-Duty Diesel Engine

2019 ◽  
Vol 3 (2) ◽  
pp. 9-20
Author(s):  
Oladapo Adeniyi
Keyword(s):  
Diesel Engine ◽  
Pressure Ratio ◽  
Inlet Temperature ◽  
Heavy Duty ◽  
Global Industry ◽  
Piston Bowl ◽  
Heavy Duty Diesel Engine ◽  
Temperature And Pressure ◽  
Heavy Duty Diesel ◽  
Proper Performance

Today, due to increased efficiency of heavy-duty diesel engines in the global industry, discussion of the performance of these motors, including higher efficiency and lower emissions, is very important. Several methods exist to meet these demands by the diesel engine. Piston bowl geometry deformation strategy is a reliable method for achieving pollutants of lower nitrogen oxides (Nox) and soot and higher yield. This paper has used Converge software to model the CFD for the performance of a Caterpillar 3401 engine with three different piston bowl geometries and various depths and chamfers for one of the geometries. The compression, inlet temperature, and pressure ratio are assumed to be constant. The results of efficiency and pollution of the engine are presented at all stages for analysis, comparisons, and conclusions. The results show that the cylindrical piston bowl geometry has a proper performance in terms of efficiency and the pollutions produced.

scholarly journals Effects of renewable fuel and exhaust aftertreatment on primary and secondary emissions from a modern heavy-duty diesel engine

2021 ◽  
Vol 156 ◽  
pp. 105781
Author(s):  
Louise Gren ◽  
Vilhelm B. Malmborg ◽  
John Falk ◽  
Lassi Markula ◽  
Maja Novakovic ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Exhaust Aftertreatment ◽  
Heavy Duty ◽  
Renewable Fuel ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Fundamental Study of Waste Heat Recovery in the High Boosted 6-cylinder Heavy Duty Diesel Engine

2015 ◽  
Vol 8 (2) ◽  
pp. 209-226 ◽  
Author(s):  
Takuya Yamaguchi ◽  
Yuzo Aoyagi ◽  
Noboru Uchida ◽  
Akira Fukunaga ◽  
Masayuki Kobayashi ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Heavy Duty ◽  
Fundamental Study ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel
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