Study on Altitude Adaptability of a Turbocharged Off-Road Diesel EngineSource: Journal of Engineering for Gas Turbines and Power:;2020:;volume( 142 ):;issue: 011::page 0114501-1DOI: 10.1115/1.4047932Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the operating characteristics of an off-road diesel engine to enhance its power performance in plateau. First, the impacts of altitude on the power, fuel economy, and emissions characteristics were analyzed by a bench test. Second, the combustion and overall performance working at different altitudes were studied by three-dimensional numerical simulation, including the relationship between fuel injection parameters and engine performance. The results showed that altitude significantly affects the performance of the off-road diesel engine. As the altitude increased from 0 m to 2000 m, the engine power decreased as much as 4.3%, and the brake-specific fuel consumption (BSFC) increased as much as 6%. At the peak torque condition, the intake manifold boost pressure and the exhaust manifold pressure both reduced with a rise of altitude, while the intake and exhaust manifold temperatures both increased with a rise of altitude. Finally, after comparing the in-cylinder flow conditions and combustion characteristics given by six combustion chamber designs that have different shrinkage ratios, the engine performance at 4000 m altitude with five different fuel spray angles were further optimized. The engine rated power increased by 8.2% when the shrinkage ratio was 7.28% and the fuel spray angle was 150 deg at the 4000 m altitude.
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contributor author | Huang, Fenlian | |
contributor author | Lei, Jilin | |
contributor author | Xin, Qianfan | |
date accessioned | 2022-02-04T22:17:36Z | |
date available | 2022-02-04T22:17:36Z | |
date copyright | 10/29/2020 12:00:00 AM | |
date issued | 2020 | |
identifier issn | 0742-4795 | |
identifier other | omae_143_2_021202.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4275278 | |
description abstract | This paper investigates the operating characteristics of an off-road diesel engine to enhance its power performance in plateau. First, the impacts of altitude on the power, fuel economy, and emissions characteristics were analyzed by a bench test. Second, the combustion and overall performance working at different altitudes were studied by three-dimensional numerical simulation, including the relationship between fuel injection parameters and engine performance. The results showed that altitude significantly affects the performance of the off-road diesel engine. As the altitude increased from 0 m to 2000 m, the engine power decreased as much as 4.3%, and the brake-specific fuel consumption (BSFC) increased as much as 6%. At the peak torque condition, the intake manifold boost pressure and the exhaust manifold pressure both reduced with a rise of altitude, while the intake and exhaust manifold temperatures both increased with a rise of altitude. Finally, after comparing the in-cylinder flow conditions and combustion characteristics given by six combustion chamber designs that have different shrinkage ratios, the engine performance at 4000 m altitude with five different fuel spray angles were further optimized. The engine rated power increased by 8.2% when the shrinkage ratio was 7.28% and the fuel spray angle was 150 deg at the 4000 m altitude. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Study on Altitude Adaptability of a Turbocharged Off-Road Diesel Engine | |
type | Journal Paper | |
journal volume | 142 | |
journal issue | 11 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.4047932 | |
journal fristpage | 0114501-1 | |
journal lastpage | 0114501-11 | |
page | 11 | |
tree | Journal of Engineering for Gas Turbines and Power:;2020:;volume( 142 ):;issue: 011 | |
contenttype | Fulltext |