Experiment on the scavenging process of opposed-piston two-stroke diesel engine

Xue Fei Dong; Chang Lu Zhao; Fu Jun Zhang; Zhen Feng Zhao; Zhao Yi Xie

doi:10.16236/j.cnki.nrjxb.201504051

Experiment on the scavenging process of opposed-piston two-stroke diesel engine

Xue Fei Dong
, Chang Lu Zhao
, Fu Jun Zhang
, Zhen Feng Zhao^*
, Zhao Yi Xie

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

To study the characteristics of gas exchange process in an opposed-piston two-stroke (OP2S) diesel engines, a specific tracer gas test method was developed and experiments were carried out to analyze the gas exchange performance under different intake and exhaust state parameters. Results show that the difference between intake pressure and exhaust pressure has a significant impact on the gas exchange performance as well as the trapped gas mass. It has a positive effect on the scavenging efficiency and the trapped air mass. However, pressure difference has little influence on the scavenging efficiency and the trapped air mass if the delivery ratio exceeds 1.4. Consequently, the delivery ratio ranging from 0.5 to 1.4 was chosen to achieve an optimization between steady running and minimum pump loss.

Original language	English
Pages (from-to)	362-369
Number of pages	8
Journal	Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines)
Volume	33
Issue number	4
DOIs	https://doi.org/10.16236/j.cnki.nrjxb.201504051
Publication status	Published - 25 Jul 2015

Keywords

Opposed-piston two-stroke diesel engine
Scavenging process
Tracer gas method

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10.16236/j.cnki.nrjxb.201504051

Cite this

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title = "Experiment on the scavenging process of opposed-piston two-stroke diesel engine",

abstract = "To study the characteristics of gas exchange process in an opposed-piston two-stroke (OP2S) diesel engines, a specific tracer gas test method was developed and experiments were carried out to analyze the gas exchange performance under different intake and exhaust state parameters. Results show that the difference between intake pressure and exhaust pressure has a significant impact on the gas exchange performance as well as the trapped gas mass. It has a positive effect on the scavenging efficiency and the trapped air mass. However, pressure difference has little influence on the scavenging efficiency and the trapped air mass if the delivery ratio exceeds 1.4. Consequently, the delivery ratio ranging from 0.5 to 1.4 was chosen to achieve an optimization between steady running and minimum pump loss.",

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T1 - Experiment on the scavenging process of opposed-piston two-stroke diesel engine

AU - Dong, Xue Fei

AU - Zhao, Chang Lu

AU - Zhang, Fu Jun

AU - Zhao, Zhen Feng

AU - Xie, Zhao Yi

PY - 2015/7/25

Y1 - 2015/7/25

N2 - To study the characteristics of gas exchange process in an opposed-piston two-stroke (OP2S) diesel engines, a specific tracer gas test method was developed and experiments were carried out to analyze the gas exchange performance under different intake and exhaust state parameters. Results show that the difference between intake pressure and exhaust pressure has a significant impact on the gas exchange performance as well as the trapped gas mass. It has a positive effect on the scavenging efficiency and the trapped air mass. However, pressure difference has little influence on the scavenging efficiency and the trapped air mass if the delivery ratio exceeds 1.4. Consequently, the delivery ratio ranging from 0.5 to 1.4 was chosen to achieve an optimization between steady running and minimum pump loss.

AB - To study the characteristics of gas exchange process in an opposed-piston two-stroke (OP2S) diesel engines, a specific tracer gas test method was developed and experiments were carried out to analyze the gas exchange performance under different intake and exhaust state parameters. Results show that the difference between intake pressure and exhaust pressure has a significant impact on the gas exchange performance as well as the trapped gas mass. It has a positive effect on the scavenging efficiency and the trapped air mass. However, pressure difference has little influence on the scavenging efficiency and the trapped air mass if the delivery ratio exceeds 1.4. Consequently, the delivery ratio ranging from 0.5 to 1.4 was chosen to achieve an optimization between steady running and minimum pump loss.

KW - Opposed-piston two-stroke diesel engine

KW - Scavenging process

KW - Tracer gas method

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DO - 10.16236/j.cnki.nrjxb.201504051

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SN - 1000-0909

VL - 33

SP - 362

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JO - Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines)

JF - Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines)

IS - 4

ER -

Experiment on the scavenging process of opposed-piston two-stroke diesel engine

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Keywords

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