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An experimental investigation of CNG as an alternative fuel for a retrofitted gasoline vehicle

机译：CNG作为加油汽油车替代燃料的实验研究

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摘要

This paper presents test results obtained from running a 1.5 L, 4-cylinder Proton Magma retrofitted spark ignition car engine with dynamometer. Performance, fuel consumption and exhaust emissions measurements were recorded under steady state operating conditions for gasoline and compressed natural gas (CNG). The engine was converted to computer integrated bi-fueling system from a gasoline engine and was operated separately either with gasoline or CNG using an electronically controlled solenoid actuated valve system. A PC based data acquisition and control system was used for controlling all the operation. A comparative analysis of the performance and emissions has been made for gasoline and CNG. Based on the experimental results, it is transparent that CNG shows low brake mean effective pressure (BMEP), brake specific fuel consumptions (BSFC), higher efficiency and lower emissions of CO, CO_2, HC but more NO_x compared to gasoline.
机译：本文介绍了使用带测力计的1.5升4缸Proton Magma改装火花点火汽车发动机运行获得的测试结果。在汽油和压缩天然气（CNG）的稳态运行条件下记录性能，燃料消耗和废气排放测量值。该发动机从汽油发动机转换为计算机集成的双燃料系统，并使用电子控制的电磁致动阀系统与汽油或CNG分开运行。基于PC的数据采集和控制系统用于控制所有操作。对汽油和压缩天然气的性能和排放进行了比较分析。根据实验结果，透明的是，CNG与汽油相比，显示出较低的制动平均有效压力（BMEP），制动比燃油消耗（BSFC），更高的效率和更低的CO，CO_2，HC排放量，但NO_x更高。

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