Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions
Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to...
Ausführliche Beschreibung
Autor*in: |
Li, Yikai [verfasserIn] Wang, Dongfang [verfasserIn] Shi, Zhongjie [verfasserIn] Chen, Haiyan [verfasserIn] Liu, Fushui [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2021 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Energy - Amsterdam [u.a.] : Elsevier Science, 1976, 227 |
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Übergeordnetes Werk: |
volume:227 |
DOI / URN: |
10.1016/j.energy.2021.120423 |
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Katalog-ID: |
ELV005999278 |
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245 | 1 | 0 | |a Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions |
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520 | |a Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. | ||
650 | 4 | |a Cold-start conditions | |
650 | 4 | |a Preheating | |
650 | 4 | |a Critical ignition conditions | |
650 | 4 | |a Altitude | |
650 | 4 | |a Numerical method | |
650 | 4 | |a Control method | |
700 | 1 | |a Wang, Dongfang |e verfasserin |4 aut | |
700 | 1 | |a Shi, Zhongjie |e verfasserin |0 (orcid)0000-0003-0132-7745 |4 aut | |
700 | 1 | |a Chen, Haiyan |e verfasserin |4 aut | |
700 | 1 | |a Liu, Fushui |e verfasserin |4 aut | |
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allfields |
10.1016/j.energy.2021.120423 doi (DE-627)ELV005999278 (ELSEVIER)S0360-5442(21)00672-1 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Li, Yikai verfasserin aut Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. Cold-start conditions Preheating Critical ignition conditions Altitude Numerical method Control method Wang, Dongfang verfasserin aut Shi, Zhongjie verfasserin (orcid)0000-0003-0132-7745 aut Chen, Haiyan verfasserin aut Liu, Fushui verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 227 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:227 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.70 Energie: Allgemeines VZ AR 227 |
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10.1016/j.energy.2021.120423 doi (DE-627)ELV005999278 (ELSEVIER)S0360-5442(21)00672-1 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Li, Yikai verfasserin aut Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. Cold-start conditions Preheating Critical ignition conditions Altitude Numerical method Control method Wang, Dongfang verfasserin aut Shi, Zhongjie verfasserin (orcid)0000-0003-0132-7745 aut Chen, Haiyan verfasserin aut Liu, Fushui verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 227 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:227 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.70 Energie: Allgemeines VZ AR 227 |
allfields_unstemmed |
10.1016/j.energy.2021.120423 doi (DE-627)ELV005999278 (ELSEVIER)S0360-5442(21)00672-1 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Li, Yikai verfasserin aut Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. Cold-start conditions Preheating Critical ignition conditions Altitude Numerical method Control method Wang, Dongfang verfasserin aut Shi, Zhongjie verfasserin (orcid)0000-0003-0132-7745 aut Chen, Haiyan verfasserin aut Liu, Fushui verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 227 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:227 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.70 Energie: Allgemeines VZ AR 227 |
allfieldsGer |
10.1016/j.energy.2021.120423 doi (DE-627)ELV005999278 (ELSEVIER)S0360-5442(21)00672-1 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Li, Yikai verfasserin aut Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. Cold-start conditions Preheating Critical ignition conditions Altitude Numerical method Control method Wang, Dongfang verfasserin aut Shi, Zhongjie verfasserin (orcid)0000-0003-0132-7745 aut Chen, Haiyan verfasserin aut Liu, Fushui verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 227 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:227 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.70 Energie: Allgemeines VZ AR 227 |
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10.1016/j.energy.2021.120423 doi (DE-627)ELV005999278 (ELSEVIER)S0360-5442(21)00672-1 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Li, Yikai verfasserin aut Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. Cold-start conditions Preheating Critical ignition conditions Altitude Numerical method Control method Wang, Dongfang verfasserin aut Shi, Zhongjie verfasserin (orcid)0000-0003-0132-7745 aut Chen, Haiyan verfasserin aut Liu, Fushui verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 227 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:227 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.70 Energie: Allgemeines VZ AR 227 |
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Elektronische Aufsätze |
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Li, Yikai |
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10.1016/j.energy.2021.120423 |
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(ORCID)0000-0003-0132-7745 |
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title_sort |
environment-adaptive method to control intake preheating for diesel engines at cold-start conditions |
title_auth |
Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions |
abstract |
Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. |
abstractGer |
Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. |
abstract_unstemmed |
Preheating the fresh charge is an effective way to improve the diesel cold-start performance. In the present study, the minimum intake preheating powers at different ambient temperatures and densities were investigated by using the optical experiments, engine bench tests and thermodynamic theory, to explore an environment-adaptive method of intake preheating power at cold-start conditions. The optical experiment results show that the critical ignition temperature of diesel spray decreases rapidly and then slowly with the decrease of in-cylinder density, and a relation between them is established. The results of engine bench tests show that the actual in-cylinder pressure is smaller than the theoretical compression pressure, and the relation between them is established in a wide speed range. Based on the experimental results and the thermodynamic theory, we establish a map chart of the intake preheating power with the ambient temperature and altitude. The results show that the minimum intake preheating power increases linearly as the ambient temperature decreases at the speed of first injection, and it first decreases and then increases as the speed increases during speed-up period. The requirement of the minimum intake preheating powers at the speed of first injection and speed-up period have different turning points with the change of altitude. |
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title_short |
Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions |
remote_bool |
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author2 |
Wang, Dongfang Shi, Zhongjie Chen, Haiyan Liu, Fushui |
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Wang, Dongfang Shi, Zhongjie Chen, Haiyan Liu, Fushui |
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doi_str |
10.1016/j.energy.2021.120423 |
up_date |
2024-07-06T19:52:41.148Z |
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