Emission characteristics of a heavy-duty diesel engine at simulated high altitudes

He, Chuangxin; Ge, Yunshan; Ma, Chaochen; Tan, Jianwei; Liu, Zhihua; Wang, Chu; Yu, Linxiao; Ding, Yan

doi:10.1016/j.scitotenv.2011.01.029

Cited by 66 publications

(38 citation statements)

References 23 publications

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“…increased by 142.3% and 203.5%, respectively [30]. It was further concluded that smoke emissions in heavy-duty diesel engines increase at higher elevations [31]. There are reports proving RH effects on the post-combustion, dilution, and secondary aerosol processes of PM formation [8][9][10][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Contrasted Effects of Relative Humidity and Precipitation on Urban PM2.5 Pollution in High Elevation Urban Areas

2018

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Levels of urban pollution can be influenced largely by meteorological conditions and the topography of the area. The impact of the relative humidity (RH) on the daily average PM 2.5 concentrations was studied at several sites in a mid-size South American city at a high elevation over the period of nine years. In this work, we show that there is a positive correlation between daily average urban PM 2.5 concentrations and the RH in traffic-busy central areas, and a negative correlation in the outskirts of the city in more industrial areas. While in the traffic sites strong events of precipitation (≥9 mm) played a major role in PM 2.5 pollution removal, in the city outskirts, the PM 2.5 concentrations decreased with increasing RH independently of rain accumulation. Increasing PM 2.5 concentrations are to be expected in any highly motorized city where there is high RH and a lack of strong precipitation, especially in rapidly growing and developing countries with high motorization due to poor fuel quality. Finally, two models, based on a logistic regression algorithm, are proposed to describe the effect of rain and RH on PM 2.5 , when the source of pollution is traffic-based vs. industry-based.

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Section: Introductionmentioning

confidence: 99%

Contrasted Effects of Relative Humidity and Precipitation on Urban PM2.5 Pollution in High Elevation Urban Areas

2018

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“…Therefore, lots of researchers have focused on the emissions of diesel engine at altitude. He et al (2011) performed the experimental study to investigate the effects of altitude on the pollutant emissions of a diesel engine. Their experiments showed the considerable increase in HC, CO and soot.…”

Section: Fig 1 Altitude Above Sea Level For Some Iranian Citiesmentioning

confidence: 99%

Effects of Altitude and Temperature on the Performance and Efficiency of Turbocharged Direct Injection Gasoline Engine

Motahari¹,

Chitsaz²

2019

JAFM

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Iran is located at the high altitude region and has a diverse four season climate. The temperature difference of two locations at the same time reaches to 50° C. Therefore, the modern direct injection turbocharged engines are highly affected at this condition. This paper deals with the effects of temperature and pressure variations on the engine performance and fuel consumption of turbocharged gasoline direct injection engine. Ford ecoboost is selected for this study and the base experiments are performed at the sea level. At the next step, a comprehensive one-dimensional model of the engine is constructed in GT power and validated with experimental data. Validated model is implemented to investigate the effects of ambient air variations on the engine performance and fuel consumption. The simulations revealed that low end torque is not highly affected by the temperature increase due to the turbocharging compensation while engine torque is significantly dropped at high engine speeds in the elevated temperatures. At constant air temperature, brake specific fuel consumption is decreased for higher intake pressure up to 3000 rpm and does not change up to 3500 rpm.

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“…The authors attribute this to the "the relatively lower the air density introduced into the cylinders in higher altitudes that leads to the increase of auto ignition delay time which could shorten the late combustion phase; hence, the soot burnout process deteriorates" (Ghazikhani, Ebrahim-Feyz, Mahian, and Sabazadeh 2013). Research conducted by He et al (2011) suggests that engine smoke increased by rates of 30% to 34% when operating diesel engines above 1,000 meters. Liu, Shen, Bi, and Lei (2014) reported a direct correlation between atmospheric pressure and the level of soot generated in diesel engines.…”

Section: Figure 3: Latin America Construction Machine Population In 2014mentioning

confidence: 99%

System Engineering Analysis of Construction Equipment Operation in the Latin America

Azevedo

Olsen

2017

INCOSE International Symp

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The Latin American region has many important ongoing infrastructure projects. It is a global source of mining materials such as copper and iron. Thus, the region is an important market for construction equipment manufacturers such as Caterpillar, John Deere, Komatsu, Volvo, and CNH. However, it is not financially feasible for these manufactures to test construction machines in all 33 countries. Consequently, there is a significant lack of engine system understanding in this region due to its diverse operating conditions. This research provides a system engineering analysis of how diesel engine durability is affected by the environmental factors such as altitude and fuel quality in Latin America. Examination of engine oil analyses shows that oil condition provides a leading indicator of premature internal engine wear in Latin America. The study further relates environment factors in Latin America such as altitude to machine diagnostic trouble codes.

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Emission characteristics of a heavy-duty diesel engine at simulated high altitudes

Cited by 66 publications

References 23 publications

Contrasted Effects of Relative Humidity and Precipitation on Urban PM2.5 Pollution in High Elevation Urban Areas

Contrasted Effects of Relative Humidity and Precipitation on Urban PM2.5 Pollution in High Elevation Urban Areas

Effects of Altitude and Temperature on the Performance and Efficiency of Turbocharged Direct Injection Gasoline Engine

System Engineering Analysis of Construction Equipment Operation in the Latin America

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