Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation
To reduce the smoke and nitrogen oxide (NOx) emissions; a detailed study concerned with exhaust gas recirculation (EGR) and diesel injection strategy was conducted on a two-stage series turbocharging diesel engine under transient operating condition. One transient process based on the constant speed...
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| Format: | Article |
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MDPI AG
2020-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/3/566 |
| _version_ | 1811306642611896320 |
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| author | Fangyuan Zhang Zhongshu Wang Jing Tian Linlin Li Kaibo Yu Kunyi He |
| author_facet | Fangyuan Zhang Zhongshu Wang Jing Tian Linlin Li Kaibo Yu Kunyi He |
| author_sort | Fangyuan Zhang |
| collection | DOAJ |
| description | To reduce the smoke and nitrogen oxide (NOx) emissions; a detailed study concerned with exhaust gas recirculation (EGR) and diesel injection strategy was conducted on a two-stage series turbocharging diesel engine under transient operating condition. One transient process based on the constant speed of 1650 r/min and load increases linearly from 10% to 100% within 5 s was tested in this study. The effect of the EGR valve control strategy on engine transient performance was examined. The results show that better air-fuel mixing quality can be obtained with the optimized the EGR valve open loop control strategy and the smoke opacity peak decreased more than 64%. Under the EGR valve close loop control strategy; the smoke opacity peak was lower than with open loop control strategy; but higher than without EGR. The effect of fuel injection strategy on engine transient performance was examined with the EGR valve close loop control. The results show that sectional-stage rail pressure (SSRP) strategy (increasing injection pressure from a turning point load to 100% load) and optimizing fuel injection timing can improve the engine emission performance. The satisfactory results can be obtained with lower NOx (382 ppm) emissions and the smoke opacity peak (3.8%), when the turning point load is set to 60% with the injection timing delay 6° CA. |
| first_indexed | 2024-04-13T08:48:01Z |
| format | Article |
| id | doaj.art-b0a2e2a1408f47cc833d5b09ae4ba0b4 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T08:48:01Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b0a2e2a1408f47cc833d5b09ae4ba0b42022-12-22T02:53:35ZengMDPI AGEnergies1996-10732020-01-0113356610.3390/en13030566en13030566Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient OperationFangyuan Zhang0Zhongshu Wang1Jing Tian2Linlin Li3Kaibo Yu4Kunyi He5The State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaThe State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaThe State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaSAIC, Shanghai 201201, ChinaShanghai Volkswagen Automotive Co., Ltd., Shanghai 201805, ChinaThe State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaTo reduce the smoke and nitrogen oxide (NOx) emissions; a detailed study concerned with exhaust gas recirculation (EGR) and diesel injection strategy was conducted on a two-stage series turbocharging diesel engine under transient operating condition. One transient process based on the constant speed of 1650 r/min and load increases linearly from 10% to 100% within 5 s was tested in this study. The effect of the EGR valve control strategy on engine transient performance was examined. The results show that better air-fuel mixing quality can be obtained with the optimized the EGR valve open loop control strategy and the smoke opacity peak decreased more than 64%. Under the EGR valve close loop control strategy; the smoke opacity peak was lower than with open loop control strategy; but higher than without EGR. The effect of fuel injection strategy on engine transient performance was examined with the EGR valve close loop control. The results show that sectional-stage rail pressure (SSRP) strategy (increasing injection pressure from a turning point load to 100% load) and optimizing fuel injection timing can improve the engine emission performance. The satisfactory results can be obtained with lower NOx (382 ppm) emissions and the smoke opacity peak (3.8%), when the turning point load is set to 60% with the injection timing delay 6° CA.https://www.mdpi.com/1996-1073/13/3/566diesel enginetransient operationegrinjection strategiesoptimization |
| spellingShingle | Fangyuan Zhang Zhongshu Wang Jing Tian Linlin Li Kaibo Yu Kunyi He Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation Energies diesel engine transient operation egr injection strategies optimization |
| title | Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation |
| title_full | Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation |
| title_fullStr | Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation |
| title_full_unstemmed | Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation |
| title_short | Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation |
| title_sort | effect of egr and fuel injection strategies on the heavy duty diesel engine emission performance under transient operation |
| topic | diesel engine transient operation egr injection strategies optimization |
| url | https://www.mdpi.com/1996-1073/13/3/566 |
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