{"title":"Effects of Mechanical Injector Replacement on Spray and Combustion Characteristics in an Agriculture Diesel Engine","authors":"","doi":"10.1007/s12239-024-00066-y","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>The objective of this study was to analyze through spray and engine experiments the effects of replacing mechanical injectors. The spray characteristics of the mechanical injectors of a used diesel engine and those of new mechanical injectors of the same model were compared. The injection quantity of the new injector was approximately 2–4% higher than that of the used injector owing to the deposit on the nozzle surface. The opening pressure of the used injector was 225 bar on account of the deterioration of the spring inside the injector. This pressure was lower than that of the new injector. The average spray penetration length of both injectors increased similarly up to 2 ms after injection. Owing to deposits on the nozzle surface, the spray angle of the used injectors tended to be smaller than those of the new injectors. The results of engine experiments showed that the new injectors recovered over 90% of engine torque and engine power on account of the increased fuel injection quantity. However, employing the new injectors caused heat loss and fuel consumption rate deterioration. The new injectors effectively reduced NOx and PM emissions by retarding the fuel injection timing and increasing the fuel injection pressure.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s12239-024-00066-y","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The objective of this study was to analyze through spray and engine experiments the effects of replacing mechanical injectors. The spray characteristics of the mechanical injectors of a used diesel engine and those of new mechanical injectors of the same model were compared. The injection quantity of the new injector was approximately 2–4% higher than that of the used injector owing to the deposit on the nozzle surface. The opening pressure of the used injector was 225 bar on account of the deterioration of the spring inside the injector. This pressure was lower than that of the new injector. The average spray penetration length of both injectors increased similarly up to 2 ms after injection. Owing to deposits on the nozzle surface, the spray angle of the used injectors tended to be smaller than those of the new injectors. The results of engine experiments showed that the new injectors recovered over 90% of engine torque and engine power on account of the increased fuel injection quantity. However, employing the new injectors caused heat loss and fuel consumption rate deterioration. The new injectors effectively reduced NOx and PM emissions by retarding the fuel injection timing and increasing the fuel injection pressure.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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