{"title":"Transient Response of Turbocharged Compression Ignition Engine under\n Different Load Conditions","authors":"S. Saad, Asiya Rummana","doi":"10.4271/03-17-01-0005","DOIUrl":null,"url":null,"abstract":"In urban roads the engine speed and the load vary suddenly and frequently,\n resulting in increased exhaust emissions. In such operations, the effect of air\n injection technique to access the transient response of the engine is of great\n interest. The effectiveness of air injection technique in improving the\n transient response under speed transient is investigated in detail [1]; however, it is not evaluated for the\n load transients. Load step demand of the engine is another important event that\n limits the transient response of the turbocharger. In the present study,\n response of a heavy-duty turbocharged diesel engine is investigated for\n different load conditions. Three cases of load transients are considered:\n constant load, load magnitude variation, and load scheduling. Air injection\n technique is simulated and after optimization of injection pressure based on\n orifice diameter, its effect on the transient response is presented. The results\n reveal that air injection into the intake manifold is an effective technique to\n improve the turbo lag of a heavy-duty turbocharged diesel engine under the\n transient conditions of load.","PeriodicalId":47948,"journal":{"name":"SAE International Journal of Engines","volume":"19 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"SAE International Journal of Engines","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4271/03-17-01-0005","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"TRANSPORTATION SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
In urban roads the engine speed and the load vary suddenly and frequently,
resulting in increased exhaust emissions. In such operations, the effect of air
injection technique to access the transient response of the engine is of great
interest. The effectiveness of air injection technique in improving the
transient response under speed transient is investigated in detail [1]; however, it is not evaluated for the
load transients. Load step demand of the engine is another important event that
limits the transient response of the turbocharger. In the present study,
response of a heavy-duty turbocharged diesel engine is investigated for
different load conditions. Three cases of load transients are considered:
constant load, load magnitude variation, and load scheduling. Air injection
technique is simulated and after optimization of injection pressure based on
orifice diameter, its effect on the transient response is presented. The results
reveal that air injection into the intake manifold is an effective technique to
improve the turbo lag of a heavy-duty turbocharged diesel engine under the
transient conditions of load.