EFFECT OF NOZZLE DIAMETER ON MACROSCOPIC SPRAY BEHAVIOR OF HEAVY-DUTY DIESEL ENGINE UNDER COLD-START CONDITIONS

2019 ◽  
Vol 29 (8) ◽  
pp. 741-762
Author(s):  
Zhicheng Shi ◽  
Chia-Fon Lee ◽  
Han Wu ◽  
Haiying Li ◽  
Yang Wu ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Cold Start ◽  
Nozzle Diameter ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

An Experimental Study on NOx Emissions of a Heavy-Duty Diesel Engine during Cold Start and Idling

2021 ◽  
Author(s):  
Shouvik Dev ◽  
Hongsheng Guo ◽  
Brian Liko ◽  
Simon Lafrance ◽  
Aaron Conde
Keyword(s):  
Experimental Study ◽  
Diesel Engine ◽  
Cold Start ◽  
Nox Emissions ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Numerical Evaluation of Spray-Guided Glow Plug Assistance on Gasoline Compression Ignition During Cold Idle Operation in a Heavy-Duty Diesel Engine

2020 ◽  
Author(s):  
Le Zhao ◽  
Yuanjiang Pei ◽  
Yu Zhang ◽  
Praveen Kumar ◽  
Tom Tzanetakis ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Combustion Process ◽  
Cold Start ◽  
Compression Ignition ◽  
Heavy Duty ◽  
Glow Plug ◽  
Fuel Vaporization ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel ◽  
Ignition And Combustion

Abstract Starting compression ignition engines under cold conditions is extremely challenging, due to insufficient fuel vaporization, heavy wall impingement, and low ignitability of the fuel. For gasoline compression ignition (GCI) combustion strategies, which offer the potential for an enhanced NOx-PM tradeoff with diesel-like fuel efficiency, robust ignition and combustion in very cold conditions pose a significant challenge due to the low reactivity of gasoline fuels. Based on the previous understanding of the spray, ignition and combustion processes for a GCI engine under cold conditions, this study focuses on investigating the cold combustion performance of a heavy-duty GCI engine with glow plug ignition assist. Glow plugs, commonly used for low temperature cold starts in diesel engines, are used to pre-heat a segment of the mixture to improve its ignitability. Here, CFD studies are carried out to explore the influence of a spray-guided glow plug on the spray and combustion behavior of a GCI engine under cold operating conditions. In a prior study, the underlying CFD model has been validated using experimental data from a six-cylinder, 15 L heavy-duty diesel engine operating with a compression ratio (CR) of 17.3 at a 600 rpm cold idle condition with RON92 E0 gasoline. The energy intensity required by the glow plug to deliver stable combustion isparametrically studied. The size and location of the glow plug are also parametrically varied to evaluate their effects on the combustion process. The influence of the glow plug on the in-cylinder mixture distribution and the ensuing combustion process is also investigated. In particular, the localized fuel spray distribution and mixture formation near the glow plug are examined. The results reveal that the glow plug enhances GCI combustion under cold idle conditions and that the spray-guided glow plug improves fuel vaporization, leading to a rich mixture near the glow plug and an enhancement of the combustion efficiency. In addition, the effectiveness of the glow plug at a low ambient temperature of 0°C and a 200 rpm cold start condition is evaluated. These simulations suggest that the glow plug can improve the cold start performance of a GCI engine.

Effects of altitude on combustion characteristic during cold start of heavy-duty diesel engine

2017 ◽  
Vol 18 (2) ◽  
pp. 209-217 ◽  
Author(s):  
Z. C. Kan ◽  
D. M. Lou ◽  
Z. Z. Cao ◽  
Z. Y. Hu ◽  
S. Liu ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Cold Start ◽  
Combustion Characteristic ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

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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