Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting
Split hydrogen direct injection (SHDI) has been proved capable of better efficiency and fewer emissions. Therefore, to investigate SHDI deeply, a numerical study on the effect of second injection timing was presented at a gasoline/hydrogen spark ignition (SI) engine with SHDI. With an excess air rat...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/19/5223 |
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| author | Guanting Li Xiumin Yu Ping Sun Decheng Li |
| author_facet | Guanting Li Xiumin Yu Ping Sun Decheng Li |
| author_sort | Guanting Li |
| collection | DOAJ |
| description | Split hydrogen direct injection (SHDI) has been proved capable of better efficiency and fewer emissions. Therefore, to investigate SHDI deeply, a numerical study on the effect of second injection timing was presented at a gasoline/hydrogen spark ignition (SI) engine with SHDI. With an excess air ratio of 1.5, five different second injection timings achieved five kinds of hydrogen mixture distribution (HMD), which was the main factor affecting the engine performances. With SHDI, since the HMD is manageable, the engine can achieve better efficiency and fewer emissions. When the second injection timing was 105° crank angle (CA) before top dead center (BTDC), the P<sub>max</sub> was the highest and the position of the P<sub>max</sub> was the earliest. Compared with the single hydrogen direct injection (HDI), the NO<sub>X</sub>, CO and HC emissions with SHDI were reduced by 20%, 40% and 72% respectively. |
| first_indexed | 2024-03-10T15:47:46Z |
| format | Article |
| id | doaj.art-5583874a3dd34265b081a360a3e06e97 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T15:47:46Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-5583874a3dd34265b081a360a3e06e972023-11-20T16:17:03ZengMDPI AGEnergies1996-10732020-10-011319522310.3390/en13195223Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct InjectingGuanting Li0Xiumin Yu1Ping Sun2Decheng Li3State Key Laboratory of Automotive Simulation and Control, Jilin University, Renmin Street 5988, Changchun 130022, Jilin, ChinaState Key Laboratory of Automotive Simulation and Control, Jilin University, Renmin Street 5988, Changchun 130022, Jilin, ChinaState Key Laboratory of Automotive Simulation and Control, Jilin University, Renmin Street 5988, Changchun 130022, Jilin, ChinaState Key Laboratory of Automotive Simulation and Control, Jilin University, Renmin Street 5988, Changchun 130022, Jilin, ChinaSplit hydrogen direct injection (SHDI) has been proved capable of better efficiency and fewer emissions. Therefore, to investigate SHDI deeply, a numerical study on the effect of second injection timing was presented at a gasoline/hydrogen spark ignition (SI) engine with SHDI. With an excess air ratio of 1.5, five different second injection timings achieved five kinds of hydrogen mixture distribution (HMD), which was the main factor affecting the engine performances. With SHDI, since the HMD is manageable, the engine can achieve better efficiency and fewer emissions. When the second injection timing was 105° crank angle (CA) before top dead center (BTDC), the P<sub>max</sub> was the highest and the position of the P<sub>max</sub> was the earliest. Compared with the single hydrogen direct injection (HDI), the NO<sub>X</sub>, CO and HC emissions with SHDI were reduced by 20%, 40% and 72% respectively.https://www.mdpi.com/1996-1073/13/19/5223hydrogen direct injectionsplit injectionsecond injection timinghydrogen mixture distributioncombustionemission |
| spellingShingle | Guanting Li Xiumin Yu Ping Sun Decheng Li Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting Energies hydrogen direct injection split injection second injection timing hydrogen mixture distribution combustion emission |
| title | Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting |
| title_full | Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting |
| title_fullStr | Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting |
| title_full_unstemmed | Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting |
| title_short | Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting |
| title_sort | study on the effect of second injection timing on the engine performances of a gasoline hydrogen si engine with split hydrogen direct injecting |
| topic | hydrogen direct injection split injection second injection timing hydrogen mixture distribution combustion emission |
| url | https://www.mdpi.com/1996-1073/13/19/5223 |
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