An Analysis on Heat Loss of a Heavy-Duty Diesel Engine by Wall-Impinged Spray Flame Observation

2015 ◽  
Author(s):  
Hideaki Osada ◽  
Noboru Uchida ◽  
Yoshio Zama
Keyword(s):  
Diesel Engine ◽  
Heat Loss ◽  
Heavy Duty ◽  
Spray Flame ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Heat Loss Analysis of a Steel Piston and a YSZ Coated Piston in a Heavy-Duty Diesel Engine Using Phosphor Thermometry Measurements

2017 ◽  
Vol 10 (4) ◽  
pp. 1954-1968 ◽  
Author(s):  
Christian Binder ◽  
Fahed Abou Nada ◽  
Mattias Richter ◽  
Andreas Cronhjort ◽  
Daniel Norling
Keyword(s):  
Diesel Engine ◽  
Heat Loss ◽  
Heavy Duty ◽  
Loss Analysis ◽  
Steel Piston ◽  
Heavy Duty Diesel Engine ◽  
Phosphor Thermometry ◽  
Heavy Duty Diesel

Effect of Altitude on In-Cylinder Heat Transfer of a Heavy Duty Diesel Engine

2021 ◽  
Author(s):  
Zhentao Liu ◽  
Jinlong Liu
Keyword(s):  
Heat Transfer ◽  
Diesel Engine ◽  
High Altitude ◽  
Heat Loss ◽  
The United States ◽  
Bulk Temperature ◽  
Atmospheric Conditions ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Abstract Diesel engines are the predominant power source in trucking industry. Heavy duty trucks move more than 70% of all goods transported around the United States. The atmospheric conditions vary with altitude but are vital to diesel engine performance, efficiency, and emissions. Existing studies reported reduced thermal efficiency and increased emissions when truck engines were operated at high altitude. As the heat loss is a key parameter related to engine efficiency, the goal of this paper was to investigate the altitude impacts on in-cylinder heat transfer characteristics. A single cylinder four-stroke heavy duty diesel engine was performed at constant speed and load but different intake pressure to simulate the varying atmospheric conditions at different altitude. The engine raised the amount of diesel mass injected to the cylinder per cycle to maintain the identical power output under decreased atmospheric pressure and to compensate the combustion deterioration happened inside the cylinder. The experimental results indicated a higher bulk temperature at high altitude due to a smaller amount of mixture mass trapped inside the cylinder. Such a larger temperature difference between the hot products and the cold walls increased in-cylinder heat transfer to the coolant, especially during the combustion period. Specifically, a rise in 2000m altitude resulted in up to ∼2% increment in heat loss to the atmosphere per fired cycle. As a result, applying thermal coating to improve fuel economy is more necessary in high altitude states, such as Colorado and Wyoming.

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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