Pressure Calculation and Test Analysis of Natural Gas Engine
Power Cylinder

doi:10.11885/j.issn.1674-5086.2013.12.15.03

Abstract

Abstract:

Pressure calculation of the natural gas engine power cylinder in working process is the basis of ensuring engine operation，and mechanical properties calculation and safety evaluation of the key components. According to the gas engine working principle and thermodynamic process，this article analyzes the gas state equation and the gas combustion process. Based on the mass equation，momentum equation and energy conservation equation，the combustion process pressure calculation method is established. Using the two-region model and field test results，the gas combustion rate equation is presented. As for the polytropic exponent，with the established database，this article determines the value with the software module，ensuring the accuracy and avoiding influence of human factors on the calculation results. Finally，with the numerical example and field test results analysis，the reliability of this calculation method is verified. Based on the pressure calculation method，quantitative analysis of the influence of key parameters such as the ignition advance angle，air-fuel ratio，speed and temperature on pressure is made. Meanwhile，using the pressure calculation results，the engine efficiency analysis can provide the basis for the economic machine operation. The mechanical performance calculation of key components based on the pressure calculation results，can provide theoretical support for safety evaluation of the engine.

Key words: natural gas, engine, power cylinder, thermodynamics, pressure, calculation method

Tian Jialin1，2, Zhu Yonghao1, Yang Lin1, Pang Xiaolin1, Li You1. Pressure Calculation and Test Analysis of Natural Gas Engine Power Cylinder[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.12.15.03.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2013.12.15.03

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2014/V36/I4/169

References

[1] Zhang R R，Lu X S，Li S Z，et al. Analysis on the heating

performance of a gas engine driven air to water heat pump

based on a steady-state model[J]. Energy Conversion and

Management，2005，46（11）：1714–1730.

[2] Wu S，Rios-Mercado R Z，Boyd E A，et al. Model relaxations

for the fuel cost minimization of steady-state gas

pipeline networks[J]. Mathematical and Computer Modelling，

2000，31（2）：197–220.

[3] 李建忠，郑民，张国生，等. 中国常规与非常规天然气

资源潜力及发展前景[J]. 石油学报，2012，33（增1）：

89–98.

[4] Ma F，Wang Y. Study on the extension of lean operation

limit through hydrogen enrichment in a natural gas

spark-ignition engine[J]. International Journal of Hydrogen

Energy，2008，33（4）：1416–1424.

[5] Bauer C G，Forest T W. Effect of hydrogen addition on

the performance of methane-fueled vehicles.Part I：effect

on SI engine performance[J]. International Journal of Hydrogen

Energy，2001，26（1）：55–70.

[6] Wang J，Huang Z，Fang Y，et al. Combustion behaviors

of a direct-injection engine operating on various fractions

of natural gas-hydrogen blends[J]. International Journal of

Hydrogen Energy，2007，32（15）：3555–3564.

[7] Wang J，Chen H，Liu B，et al. Study of cycle-by-cycle

variations of a spark ignition engine fueled with natural

gas-hydrogen blends[J]. International Journal of Hydrogen

Energy，2008，33（18）：4876–4883.

[8] 李兴虎，蒋德明，沈惠贤. 火花点火发动机压力循环

变动的评价方法研究[J]. 内燃机学报，2000，18（2）：

17l–174.

Li Xinghu，Jiang Deming，Shen Huixian. Study on evaluated

methods of pressure cyclic variation in spark ignition

engines[J]. Transactions of Csice，2000，18（2）：171–174.

[9] Wang J，Lin Z，Howe D. Characteristics of linear compressors

under current source excitation[J]. Proceedings of

the Institution of Mechanical Engineers，Part A：Journal

of Power and Energy，2007，221（7）：1057–1065.

[10] Sanada M，Morimoto S，Takeda Y. Analyses for sensorless

linear compressor using linear pulse motor[C]//

The 34th IAS Annual Meeting，Phoenix，AZ，1999：

2298–2304.

[11] Xia M，Chen X. Analysis of resonant frequency of moving

magnet linear compressor of stirling cryocooler[J]. International

Journal of Refrigeration，2010，33（4）：739–744.

[12] 郁永章，陈二锋，高秀峰. CNG 加气子站由压缩机驱动

与液压驱动的能耗理论分析[J]. 压缩机技术，2005（4）：

1–3.

Yu Yongzhang，Chen Erfeng，Gao Xiufeng. The analysis

on energy consumption in a cng secondary fueling station

driven by compressor and liquid pump[J]. Compressor

Technology，2005（4）：1–3.

[13] 田家林，梁政，杨琳，等. 整体式天然气压缩机能效计

算反平衡方法[J]. 石油学报，2013，34（4）：787–791.

Tian Jialin，Liang Zheng，Yang Lin，et al. A counterbalance

method for energy efficiency calculation of the

integral natural gas engine-compressor[J]. Acta Petrolei

Sinica，2013，34（4）：787–791.

[14] Karim G A. Hydrogen as a spark ignition engine fuel[J].

International Journal of Hydrogen Energy，2003，28（5）：

569–577.

[15] Noersteboe V S，Bakken L E，Dahl H J. Energy-efficient

operation of gas export systems[C]. SPE 123132，2008.

[16] Porpatham E，Ramesh A，Nagalingam B. Effect of hydrogen

addition on the performance of a biogas fuelled spark

ignition engine[J]. International Journal of Hydrogen

Energy，2007，32（12）：2057–2065.

[17] Ma Fanhua，Wang Yu，Liu Haiquan，et a1. Experimental

study on thermal efficiency and emission characteristics

of a lean bum hydrogen enriched natural gas engine[J]. International

Journal of Hydrogen Energy，2007，32（18）：

5067–5075.

[18] 田家林，梁政，赵洪瑞，等. 整体式燃气压

缩机能效监测软件Version1.0：中国，2012SR060802[

P].2012–07–09.

[19] 李建良，张鹏，许铁，等. SY/T 6637—2005，输气管道

系统能耗测试和计算方法[S]. 国家发展和改革委员

会，2005.

[20] 田家林，梁政，杨琳. 生产实习过程油气集输现场安全

问题分析[J]. 西南石油大学学报：社会科学版，2011，

13（7）：75–77.

Pressure Calculation and Test Analysis of Natural Gas Engine Power Cylinder

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	FANG Yu, CAO Xuemei, LI Binqian, MIN Fan, QIAO Ying. Active Learning Method for Abnormal Operating Conditions of Natural Gas Gathering System [J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2020, 42(6): 124-132.
[2]	SHI Yufan, TANG Yijia, MA Tianshou, HE Yufa. Pressure Relief Control Model of Rupture Disk for Annular Pressure Build-up in Deep-water Wells [J]. 西南石油大学学报(自然科学版), 2020, 42(5): 153-160.
[3]	ZHU Jinli. Well Location Optimization Technology of Strong Heterogeneity Gas Reservoir in Shuang 110 Well Block of Shenmu Gas Field [J]. 西南石油大学学报(自然科学版), 2020, 42(4): 83-94.
[4]	LUO Chuan, YANG Hu. Tectonic Stress is Not the Main Driving Force for Primary Migration of Oil and Gas [J]. 西南石油大学学报(自然科学版), 2020, 42(4): 104-110.
[5]	SONG Chuanzhen, ZHU Guiliang, LIU Zhongchun. Measurement and Effecting Factors of Nitrogen Diffusion Coefficient in Vug-fracture Reservoir [J]. 西南石油大学学报(自然科学版), 2020, 42(4): 95-103.
[6]	MA Shuai, ZHANG Fengbo, WANG Wenjuan, ZHA Yuqiang, WANG Yanli. Improvement and Solution Binomial Production Equation of High Pressure and Low Permeability Gas Wells [J]. 西南石油大学学报(自然科学版), 2020, 42(4): 121-126.
[7]	XIONG Yu, LIU Cheng, ZHOU Wensheng, LIU Chen, ZHONG Hao. A Study on the Influence of Property Structure Before and After the 9-point Well Pattern Arrangement [J]. 西南石油大学学报(自然科学版), 2020, 42(3): 80-96.
[8]	SHI Xianya, HUANG Xia, SHI Jingyan, ZHAO Guangyuan, XU Liyuan. Critical Drawdown Pressure of Sanding Onset for Unconsolidated Sandstone Reservoirs when Reservoir Pressure Depleted [J]. 西南石油大学学报(自然科学版), 2020, 42(3): 115-122.
[9]	HU Liming. Preliminary Study on the Mechanism of Abnormal High Pressure Formed by Oil and Gas Accumulation [J]. 西南石油大学学报(自然科学版), 2020, 42(2): 118-124.
[10]	ZHOU Jian, SONG Yanjie, JIANG Yanjiao, SUN Qinshuai, JING Yanqing. The Research Progress of Well Logging Evaluation of Marine Natural Gas Hydrate [J]. 西南石油大学学报(自然科学版), 2020, 42(2): 85-93.
[11]	WEI Bing, SHANG Jing, PU Wanfen, Kadet VALERIY, ZHAO Jinzhou. Predicting the Diffusive Front of Supercritical CO₂ in Tight Oil Reservoirs [J]. 西南石油大学学报(自然科学版), 2020, 42(2): 94-102.
[12]	ZHU Xiaohua, GUO Yingchun, DONG Liangliang. Research on Strength Behavior of Casing Thread with Defects in High Pressure Wells [J]. 西南石油大学学报(自然科学版), 2020, 42(2): 166-174.
[13]	LIU Hailong. The Theory of Pressure-difference-time and the Equivalence of Variables in Planar One-dimension Flow [J]. 西南石油大学学报(自然科学版), 2020, 42(1): 147-154.
[14]	ZHANG Liehui, CUI Qianchen, XIE Jun, ZHENG Jian, LI Chengyong. Linear Coupling Seepage Model for Fractured Horizontal Wells in Shale Gas Reservoir [J]. 西南石油大学学报(自然科学版), 2019, 41(6): 1-12.
[15]	MA Tianshou, PENG Nian, CHEN Ping, DENG Zhizhong. Wellbore Fracture Initiation Mechanical Behavior in a Horizontal Shale Gas Well [J]. 西南石油大学学报(自然科学版), 2019, 41(6): 87-99.