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首页> 外文期刊>Energy Conversion & Management >Effects Of Injection Timing On The Engine Performance And Exhaust Emissions Of A Dual-fuel Diesel Engine
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Effects Of Injection Timing On The Engine Performance And Exhaust Emissions Of A Dual-fuel Diesel Engine

机译：喷射正时对双燃料柴油机发动机性能和排放的影响

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摘要

In this study, influence of injection timing on the engine performance and exhaust emissions of a naturally aspirated, single cylinder diesel engine has been experimentally investigated when using ethanol blended diesel fuel from 0% to 15% with an increment of 5%. The engine load was selected as 15 and 30 Nm. The tests were conducted at five different injection timings (21°, 24°, 27°, 30° and 33° CA BTDC) by changing the thickness of advance shim. The experimental test results showed that BSFC and emissions of NO_x and CO_2 increased as BTE and emissions of CO and HC decreased with increasing amount of ethanol in the fuel mixture. When compared to the results of original injection timing (27° CA BTDC), NO_x, and CO_2 emissions increased, and unburned HC and CO emissions decreased for the retarded injection timings (21° and 24° CA BTDC) at the all test conditions. On the other side, with the advanced injection timings (30° and 33° CA BTDC), decreasing HC and CO emissions diminished, and NO_x and CO_2 emissions boosted. In terms of BSFC and BTE, retarded and advanced injection timings compared to the original injection timing in the all fuel blends gave negative results for all engine speeds and loads.
机译：在这项研究中，已经研究了喷射正时对自然吸气单缸柴油机的发动机性能和废气排放的影响，方法是使用乙醇混合柴油从0％到15％（增量为5％）。发动机负载选择为15和30 Nm。通过更改预填充垫片的厚度，在五个不同的喷射正时（21°，24°，27°，30°和33°CA BTDC）下进行了测试。实验测试结果表明，随着燃料混合物中乙醇含量的增加，BSFC和NO_x和CO_2的排放随着BTE的增加以及CO和HC的排放的减少而增加。与原始喷射正时（27°CA BTDC）的结果相比，在所有测试条件下，延迟喷射正时（21°CA BTDC和24°CA BTDC），NO_x和CO_2排放量增加，未燃烧的HC和CO排放量减少。另一方面，采用先进的喷射定时（CA BTDC为30°和33°CA），减少的HC和CO排放量减少，NO_x和CO_2排放量增加。就BSFC和BTE而言，在所有混合燃料中，与原始喷射正时相比，延迟和提前喷射正时对所有发动机转速和负荷均产生负面影响。

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