IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0308359
(2007-06-12)
|
등록번호 |
US-8499867
(2013-08-06)
|
우선권정보 |
IT-MI2006A1157 (2006-06-15) |
국제출원번호 |
PCT/IB2007/001812
(2007-06-12)
|
§371/§102 date |
20081211
(20081211)
|
국제공개번호 |
WO2007/144765
(2007-12-21)
|
발명자
/ 주소 |
- Marcacci, Maurizio
- Carmignani, Luca
- Capozzella, Paolo
- Caleo, Alessandro
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
29 |
초록
▼
The present invention relates to a management method of the functioning mode of a hybrid drive assembly for vehicles, in particular scooters, and a hybrid drive assembly, comprising at least one internal combustion engine and an electric machine, using the method. The method according to the inventi
The present invention relates to a management method of the functioning mode of a hybrid drive assembly for vehicles, in particular scooters, and a hybrid drive assembly, comprising at least one internal combustion engine and an electric machine, using the method. The method according to the invention comprises the phases of determining a desired torque and a vehicle state on the basis of a set of received input parameters and/or commands and is characterized in that it comprises the phases of operating the internal combustion engine so that it does not provide torque and operating the electric machine so that it functions as generator for charging an accumulator.
대표청구항
▼
1. A method of managing the functioning mode of a hybrid drive assembly of a scooter, where said scooter comprises: (a) at least one internal combustion engine (3) equipped with a drive shaft (4) connected by means of a transmission unit (5) which comprises a driving pulley (10) a driven pulley (11)
1. A method of managing the functioning mode of a hybrid drive assembly of a scooter, where said scooter comprises: (a) at least one internal combustion engine (3) equipped with a drive shaft (4) connected by means of a transmission unit (5) which comprises a driving pulley (10) a driven pulley (11) and a belt (12) wound around the pulleys (10,11) where the driven pulley (11) is selectively connectable to transmission shaft (6) by means of a centrifugal dutch (8,21) and (b) one electric machine (32) coaxial to the clutch (8,21) and to the transmission shaft (6) having a stator (33) and a rotor (35) with permanent magnets that are positioned in said rotor, said electric machine (32) being capable of rotation in two directions and being configured to be controlled for being alternatively operated for supplying propulsive torque to the scooter by taking energy from an accumulator system (36) or recharging said accumulator system (36), in the latter case functioning as a generator said method comprising the steps of: a) determining a required torque and a vehicle state based on a series of received input parameters and/or commands;b) operating said internal combustion engine (3) so that it does not supply torque and operating the electric machine (32), sending to said machine (32) a negative torque reference so that said electric machine (32) functions as a generator for charging said, accumulator system (36), when said required torque is negative;c) operating said internal combustion engine (3) and/or said electric machine (32) so as to: satisfy said required torque; and/orbring said accumulator system (36) to a pre-established charge level and/or operate said internal combustion engine (3) under maximum efficiency regime conditions, when the torque required is positive and lower than the maximum torque which can be supplied by said internal combustion engine (3);d) operating said internal combustion engine (3) to supply propulsive torque and operating said electric machine (32), sending to said electric machine (32) a positive torque reference to supply propulsive torque, in order to satisfy said torque required, when said torque required is positive and higher than the maximum torque which can be supplied by said internal combustion engine (3). 2. The management method of the functioning mode of a hybrid drive assembly according to claim 1, wherein said series of parameters and/or commands used in determining said torque required and said vehicle state is selected from the group consisting of: the management strategy of said vehicle;the rotation of an accelerator handle (44) of said vehicle;the state of at least one brake (45) of said vehicle;the rotation speed of a rotor (35) of said electric machine (32) the torque supplied by the internal combustion engine (3) the rotation speed of the internal combustion engine (3);the angular position of a butterfly valve (40) of said internal combustion engine (3);the air flow inside said internal combustion engine (3);—the charge state of said accumulator system (36) and combinations thereof. 3. The management method of the functioning mode of a hybrid drive assembly according to claim 2, wherein said command relating, to the management strategy, of said vehicle can be selected from the group consisting of: pure electric operative mode, in which the electric machine (32) alone is used for the propulsion;standard hybrid operative mode, in which both the electric machine (32) and the internal combustion engine (3) are used for the propulsion and the charge skate of the accumulator system (36) is maintained at a prefixed level;high charge hybrid operative mode, in which both the electric machine (32) and the internal combustion engine (3) operate so as to satisfy the torque required and charge the accumulator system (36) as much as possible;low charge hybrid operative mode, in which both the electric machine (32) and the internal combustion engine (3) are operated so as to satisfy the torque required while minimizing the fuel consumptions. 4. The management method of the functioning mode of a hybrid drive assembly according to claim 3, wherein, when said management strategy is the standard hybrid operative mode: in said phase c) said internal combustion engine (3) is driven so as to supply all the torque required, also using a torque in excess for the recharging of said accumulator system (36) to a pre-established charge level, if said accumulator system (36) has a charge level lower than said pre-established level; andin said phase d) said internal combustion engine (3) is driven so as to supply the maximum suppliable torque and said electric machine (32) is driven so as to satisfy the higher torque request. 5. The management method of the functioning mode of as hybrid drive assembly according to claim 3, wherein, when said management strategy is the standard hybrid operative mode in said phase c) said internal combustion engine (3) is driven so as to operate under maximum efficiency regime conditions, wherein said accumulator system (36) is substantially at a pre-established charge level, and said electric machine (32) is driven so as to satisfy the higher torque request; andin said phase d) said internal combustion engine (3) is driven so as to supply the maximum suppliable torque and said electric machine (32) is driven so as to satisfy the higher torque request. 6. The management method of the functioning mode of a hybrid drive assembly according to claim 3, wherein, when said management strategy is the high charge hybrid operative mode: in said phase c) said internal combustion engine (3) is driven so as to supply all the torque required, using a torque in excess for the recharging of said accumulator system (36) if said internal combustion engine (3) is operating under maximum efficiency regime conditions; andin said phase d) said electric machine (32) is driven so as to supply a limited propulsive torque and said internal combustion engine (3) is driven so as to supply the maximum suppliable torque. 7. The management method of the functioning mode of a hybrid drive assembly according to claim 3, wherein, when said management strategy is the low charge hybrid operative mode: in said phase c) said internal combustion engine (3) is driven so as to operate under maximum efficiency regime conditions and said electric machine (32) is driven so as to satisfy the higher torque request; andin said phase d) said internal combustion engine (3) is driven so as to supply the maximum suppliable torque and said electric machine (32) is driven so as to satisfy the higher torque request. 8. The management method of the functioning mode of a hybrid drive assembly according to claim 1, also comprising the phase of sending a negative torque reference to the electric machine (32) at the activation of at, least one brake (45). 9. The management method of the functioning mode of a hybrid drive assembly according to claim 3, wherein, when said management strategy is the pure electric operative mode: in said phase b) said electric machine (32) supplies a braking torque;in said phases c) and d) said electric machine alone (32) is driven so as to supply a propulsive torque. 10. A hybrid drive assembly for scooters, comprising (a) at least one internal combustion engine (3) equipped with a drive shaft (4) connected bye means of a transmission unit (5) which comprises a driving pulley (10), a driven pulley (11) and a (12) wound around the pulleys (10,11) where the driven pulley (11) is selectively connectable to transmission shaft (6) by means of a clutch (8,21) and (b) a least one electric machine (32), coaxial to the clutch (8,21) and to the transmission shaft (6), having a stator (33) and a rotor (35) with permanent magnets that are positioned in said rotor, said electric machine (32) being capable of rotation in two directions and being adapted for supplying propulsive torque to the scooter by taking energy from an accumulator system (36) and also being capable of functioning as a generator for recharging said accumulator system (36), said electrical machine being configured to be activated alternatively to or in combination with said internal combustion engine (3) characterized in that it comprises an energy management unit (38) for the operation of said at, least one internal combustion engine (3) and said at least one electric machine (32) in response to a series of input signals according to the method defined in claim 1. 11. The hybrid drive assembly according to claim 10 characterized in that said series of input signals corresponds to one or more parameters selected from the group consisting of: the management strategy of said vehicle,—the rotation of an accelerator handle (44) of said vehicle,—the state of at least one brake (45) of said vehicle;the rotation speed of a rotor (35) of said electric machine (32);the angular position of a butterfly valve (40) of said internal-combustion engine (3);—the torque supplied by the internal combustion engine (3);the rotation speed of the internal combustion engine (3);the air flow inside said internal combustion engine (3);the charge state of said accumulator system (36). 12. The hybrid drive assembly according to claim 10, characterized in that said electric machine (32) is of the reversible type. 13. The hybrid drive assembly according to claim 10 characterized in that said electric machine (32) comprises a stator (33) with windings of the three-phase type and a rotor (35). 14. The hybrid drive assembly according to claim 13 characterized in that said stator (33) is fitted on a fixed casing (34) coaxially to the transmission shaft (6) of said vehicle, and said rotor (35) is fitted directly onto said transmission shaft (6). 15. The hybrid drive assembly according to claim 14, characterized in that said control electronics (50) is used for recharging said accumulator system (36). 16. The hybrid drive assembly according to claim 10, characterized in that said rotor—BO-OS) has permanent magnets, said magnets being positioned inside the rotor (35) so as to produce an asymmetry in the magnetic circuit of the rotor. 17. The hybrid drive assembly according to claim 10, characterized in that said electric machine (32) has a control electronics (50) comprising a first electronic device (51) suitable for feeding the phases of said electric machine (32) and/or a second electronic device (52) suitable for raising the input voltage. 18. The hybrid drive assembly according to claim 17, characterized in that said first electronic device (51) is an inverter and said second electronic device(52) is a booster. 19. The hybrid drive assembly according to claim 17, characterized in that said second electronic device (52) is produced with a high frequency transformer. 20. The hybrid drive assembly according to claim 10, characterized in that said internal combustion engine (3) is driven by a control device (39) so as to supply a torque. 21. The hybrid drive assembly according to claim 20, characterized in that said energy management unit (38) is implemented on at least one selected from said control electronics (50) of said electric machine (32) and said control device (39) of said internal combustion engine (3). 22. The hybrid drive assembly according to claim 20, characterized in that said energy management unit (38) sends control signals to at least one selected from said control electronics (50) of said electric machine (32);said control device (39) of said internal combustion engine (3);—said accumulator system (36);a digital dashboard (74). 23. The hybrid drive assembly according to claim 22, characterized in that said energy management unit (38) communicates with said control electronics (50), control device (39), accumulator system (36) and digital dashboard (74) through a communication line (75). 24. The hybrid drive assembly according to claim 23, characterized in that said communication line (75) uses the CAN (Control Area Network) communication protocol. 25. The hybrid drive assembly according to claim 10, characterized in that said internal combustion engine (3) is coupled with a centrifugal mass clutch (8). 26. The hybrid drive assembly according to claim 10, characterized in that said internal combustion engine (3) is coupled with a driven clutch (21). 27. The hybrid drive assembly according to claim 26, characterized in that said electric machine (32) is used for starting the internal combustion engine (3) by performing the idle-stop strategy. 28. The hybrid drive assembly according to claim 26, characterized in that said electric machine (32) is driven so as to supply the required propulsion and said internal combustion engine (3) is driven so as to operate in the maximum efficiency points, recharging said accumulator system (36) through an electric generator assembled on an outlet axis of said internal combustion engine (3).
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