Influence of Compression Ratio on Pressure in the Cylinder of Internal Combustion Engine

IF 0.4 Q4 ENGINEERING, MECHANICAL

Journal of Machinery Manufacture and Reliability Pub Date : 2024-07-27 DOI:10.1134/S1052618824700298

J. Agalarov, T. Hasanova, J. Imamalieva

{"title":"Influence of Compression Ratio on Pressure in the Cylinder of Internal Combustion Engine","authors":"J. Agalarov, T. Hasanova, J. Imamalieva","doi":"10.1134/S1052618824700298","DOIUrl":null,"url":null,"abstract":"<p>Currently, variable compression ratio engines are not used, presumably due to the complexity of the design. Currently, various engines are being developed that differ in design, kinematics, load control and compression ratio changes. The article presents the results of calculating the efficiency and fuel consumption for a crankshaft with a rotation speed of 2000 and 4000 rpm with a compression ratio of 8.6 and a rotation speed of 4000 rpm with a compression ratio of 13 and provides combustion characteristics <i>m</i> = 3 and 1. It is shown that these characteristics at higher speeds they approach the indicators at lower speeds with an increase in the compression ratio. The engine parameters were calculated for various modes based on Wiebe theory. Based on the calculations, the efficiency and fuel consumption are determined for the corresponding modes and the nature of the engine operation. It has been found that with an increase in the crankshaft rotation speed, the cycle efficiency will decrease by almost half and fuel consumption will increase accordingly; with an increase in the compression ratio, the efficiency is restored and fuel consumption decreases accordingly.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 4","pages":"390 - 396"},"PeriodicalIF":0.4000,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Machinery Manufacture and Reliability","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1052618824700298","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Currently, variable compression ratio engines are not used, presumably due to the complexity of the design. Currently, various engines are being developed that differ in design, kinematics, load control and compression ratio changes. The article presents the results of calculating the efficiency and fuel consumption for a crankshaft with a rotation speed of 2000 and 4000 rpm with a compression ratio of 8.6 and a rotation speed of 4000 rpm with a compression ratio of 13 and provides combustion characteristics m = 3 and 1. It is shown that these characteristics at higher speeds they approach the indicators at lower speeds with an increase in the compression ratio. The engine parameters were calculated for various modes based on Wiebe theory. Based on the calculations, the efficiency and fuel consumption are determined for the corresponding modes and the nature of the engine operation. It has been found that with an increase in the crankshaft rotation speed, the cycle efficiency will decrease by almost half and fuel consumption will increase accordingly; with an increase in the compression ratio, the efficiency is restored and fuel consumption decreases accordingly.

Abstract Image

查看原文本刊更多论文

压缩比对内燃机气缸压力的影响

摘要目前，可变压缩比发动机尚未得到使用，这可能是由于设计的复杂性。目前，正在开发的各种发动机在设计、运动学、负载控制和压缩比变化方面各不相同。文章介绍了计算压缩比为 8.6、转速为 2000 和 4000 rpm 的曲轴的效率和燃料消耗量的结果，以及计算压缩比为 13、转速为 4000 rpm 的曲轴的效率和燃料消耗量的结果，并提供了燃烧特性 m = 3 和 1。结果表明，随着压缩比的增加，这些特性在较高转速时接近较低转速时的指标。根据 Wiebe 理论计算了各种模式下的发动机参数。根据计算结果，确定了相应模式和发动机工作性质下的效率和油耗。结果发现，随着曲轴转速的增加，循环效率将降低近一半，油耗也会相应增加；随着压缩比的增加，效率得到恢复，油耗也会相应减少。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Machinery Manufacture and Reliability ENGINEERING, MECHANICAL-

CiteScore

0.80

自引率

33.30%

发文量

期刊介绍： Journal of Machinery Manufacture and Reliability is devoted to advances in machine design; CAD/CAM; experimental mechanics of machines, machine life expectancy, and reliability studies; machine dynamics and kinematics; vibration, acoustics, and stress/strain; wear resistance engineering; real-time machine operation diagnostics; robotic systems; new materials and manufacturing processes, and other topics.