Development of two-speed dual-clutch transmission for seamless gear shifting in EVs

In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially f...
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Autor*in:	Kazuki Ogawa [verfasserIn] Tatsuhito Aihara [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Power transmission Transmission mechanism

Übergeordnetes Werk:	In: Transportation Engineering - Elsevier, 2021, 6(2021), Seite 100097-
Übergeordnetes Werk:	volume:6 ; year:2021 ; pages:100097-

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.treng.2021.100097

Katalog-ID:	DOAJ054051061

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520			\|a In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible.
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publishDate	2021
allfields	10.1016/j.treng.2021.100097 doi (DE-627)DOAJ054051061 (DE-599)DOAJ5c5e41c7faa341e9820da49374aa6952 DE-627 ger DE-627 rakwb eng TA1001-1280 Kazuki Ogawa verfasserin aut Development of two-speed dual-clutch transmission for seamless gear shifting in EVs 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible. Power transmission Transmission mechanism Transportation engineering Tatsuhito Aihara verfasserin aut In Transportation Engineering Elsevier, 2021 6(2021), Seite 100097- (DE-627)1726056848 2666691X nnns volume:6 year:2021 pages:100097- https://doi.org/10.1016/j.treng.2021.100097 kostenfrei https://doaj.org/article/5c5e41c7faa341e9820da49374aa6952 kostenfrei http://www.sciencedirect.com/science/article/pii/S2666691X21000531 kostenfrei https://doaj.org/toc/2666-691X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 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_4367 GBV_ILN_4393 GBV_ILN_4700 AR 6 2021 100097-
spelling	10.1016/j.treng.2021.100097 doi (DE-627)DOAJ054051061 (DE-599)DOAJ5c5e41c7faa341e9820da49374aa6952 DE-627 ger DE-627 rakwb eng TA1001-1280 Kazuki Ogawa verfasserin aut Development of two-speed dual-clutch transmission for seamless gear shifting in EVs 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible. Power transmission Transmission mechanism Transportation engineering Tatsuhito Aihara verfasserin aut In Transportation Engineering Elsevier, 2021 6(2021), Seite 100097- (DE-627)1726056848 2666691X nnns volume:6 year:2021 pages:100097- https://doi.org/10.1016/j.treng.2021.100097 kostenfrei https://doaj.org/article/5c5e41c7faa341e9820da49374aa6952 kostenfrei http://www.sciencedirect.com/science/article/pii/S2666691X21000531 kostenfrei https://doaj.org/toc/2666-691X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 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_4367 GBV_ILN_4393 GBV_ILN_4700 AR 6 2021 100097-
allfields_unstemmed	10.1016/j.treng.2021.100097 doi (DE-627)DOAJ054051061 (DE-599)DOAJ5c5e41c7faa341e9820da49374aa6952 DE-627 ger DE-627 rakwb eng TA1001-1280 Kazuki Ogawa verfasserin aut Development of two-speed dual-clutch transmission for seamless gear shifting in EVs 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible. Power transmission Transmission mechanism Transportation engineering Tatsuhito Aihara verfasserin aut In Transportation Engineering Elsevier, 2021 6(2021), Seite 100097- (DE-627)1726056848 2666691X nnns volume:6 year:2021 pages:100097- https://doi.org/10.1016/j.treng.2021.100097 kostenfrei https://doaj.org/article/5c5e41c7faa341e9820da49374aa6952 kostenfrei http://www.sciencedirect.com/science/article/pii/S2666691X21000531 kostenfrei https://doaj.org/toc/2666-691X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 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_4367 GBV_ILN_4393 GBV_ILN_4700 AR 6 2021 100097-
allfieldsGer	10.1016/j.treng.2021.100097 doi (DE-627)DOAJ054051061 (DE-599)DOAJ5c5e41c7faa341e9820da49374aa6952 DE-627 ger DE-627 rakwb eng TA1001-1280 Kazuki Ogawa verfasserin aut Development of two-speed dual-clutch transmission for seamless gear shifting in EVs 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible. Power transmission Transmission mechanism Transportation engineering Tatsuhito Aihara verfasserin aut In Transportation Engineering Elsevier, 2021 6(2021), Seite 100097- (DE-627)1726056848 2666691X nnns volume:6 year:2021 pages:100097- https://doi.org/10.1016/j.treng.2021.100097 kostenfrei https://doaj.org/article/5c5e41c7faa341e9820da49374aa6952 kostenfrei http://www.sciencedirect.com/science/article/pii/S2666691X21000531 kostenfrei https://doaj.org/toc/2666-691X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 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_4367 GBV_ILN_4393 GBV_ILN_4700 AR 6 2021 100097-
allfieldsSound	10.1016/j.treng.2021.100097 doi (DE-627)DOAJ054051061 (DE-599)DOAJ5c5e41c7faa341e9820da49374aa6952 DE-627 ger DE-627 rakwb eng TA1001-1280 Kazuki Ogawa verfasserin aut Development of two-speed dual-clutch transmission for seamless gear shifting in EVs 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible. Power transmission Transmission mechanism Transportation engineering Tatsuhito Aihara verfasserin aut In Transportation Engineering Elsevier, 2021 6(2021), Seite 100097- (DE-627)1726056848 2666691X nnns volume:6 year:2021 pages:100097- https://doi.org/10.1016/j.treng.2021.100097 kostenfrei https://doaj.org/article/5c5e41c7faa341e9820da49374aa6952 kostenfrei http://www.sciencedirect.com/science/article/pii/S2666691X21000531 kostenfrei https://doaj.org/toc/2666-691X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 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_4367 GBV_ILN_4393 GBV_ILN_4700 AR 6 2021 100097-
language	English
source	In Transportation Engineering 6(2021), Seite 100097- volume:6 year:2021 pages:100097-
sourceStr	In Transportation Engineering 6(2021), Seite 100097- volume:6 year:2021 pages:100097-
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Power transmission Transmission mechanism Transportation engineering
isfreeaccess_bool	true
container_title	Transportation Engineering
authorswithroles_txt_mv	Kazuki Ogawa @@aut@@ Tatsuhito Aihara @@aut@@
publishDateDaySort_date	2021-01-01T00:00:00Z
hierarchy_top_id	1726056848
id	DOAJ054051061
language_de	englisch
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callnumber-first	T - Technology
author	Kazuki Ogawa
spellingShingle	Kazuki Ogawa misc TA1001-1280 misc Power transmission misc Transmission mechanism misc Transportation engineering Development of two-speed dual-clutch transmission for seamless gear shifting in EVs
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topic_title	TA1001-1280 Development of two-speed dual-clutch transmission for seamless gear shifting in EVs Power transmission Transmission mechanism
topic	misc TA1001-1280 misc Power transmission misc Transmission mechanism misc Transportation engineering
topic_unstemmed	misc TA1001-1280 misc Power transmission misc Transmission mechanism misc Transportation engineering
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title	Development of two-speed dual-clutch transmission for seamless gear shifting in EVs
ctrlnum	(DE-627)DOAJ054051061 (DE-599)DOAJ5c5e41c7faa341e9820da49374aa6952
title_full	Development of two-speed dual-clutch transmission for seamless gear shifting in EVs
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doi_str_mv	10.1016/j.treng.2021.100097
author2-role	verfasserin
title_sort	development of two-speed dual-clutch transmission for seamless gear shifting in evs
callnumber	TA1001-1280
title_auth	Development of two-speed dual-clutch transmission for seamless gear shifting in EVs
abstract	In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible.
abstractGer	In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible.
abstract_unstemmed	In recent years, there has been a shift from gasoline-powered vehicles to electric vehicles (EVs) owing to the tightening of fuel consumption and emission regulations in many countries. One of the challenges of using EVs is their short driving range, and transmissions are being designed especially for EVs to solve this problem. The installation of these transmissions should increase the driving power, efficiency, and maximum vehicle speed, resulting in improved driving performance. However, one of the problems of EV transmissions is the generation of shocks owing to the large gear ratio for the second speed. The magnitude of the shifting shock can be controlled by adjusting the amount of force applied to the clutch friction member, and seamless shifting can be achieved by controlling the motor torque based on the clutch-passing torque. However, the clutch-passing torque is not easy to estimate, as it depends on several factors, such as the difference in the rotational speed, temperature, and time-related deterioration. Therefore, in this study, a new system was developed to directly monitor clutch torque using a dual clutch transmission (DCT). Specifically, to achieve seamless shifting of a two-speed DCT for EVs, a system was devised to monitor the clutch transmission torque using a torque sensor, and seamless shifting by controlling the motor torque and the two clutches was investigated. First, a theoretical equation was constructed to elucidate the input–output relationship for the transmission. Next, it was confirmed that seamless gear shift control is possible based on this theoretical equation. Finally, a delay was added to the motor torque to verify if seamless gear shifting was possible.
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title_short	Development of two-speed dual-clutch transmission for seamless gear shifting in EVs
url	https://doi.org/10.1016/j.treng.2021.100097 https://doaj.org/article/5c5e41c7faa341e9820da49374aa6952 http://www.sciencedirect.com/science/article/pii/S2666691X21000531 https://doaj.org/toc/2666-691X
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doi_str	10.1016/j.treng.2021.100097
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up_date	2024-07-03T21:03:04.624Z
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Development of two-speed dual-clutch transmission for seamless gear shifting in EVs

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