IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0732014
(2003-12-10)
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우선권정보 |
FR-02 15878(2002-12-11) |
발명자
/ 주소 |
- Auguet,Thierry
- Linda,Jean Louis
- Varenne,Pierre
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출원인 / 주소 |
- Conception Et Developpement Michelin S.A.
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대리인 / 주소 |
Fitzpatrick, Cella, Harper &
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인용정보 |
피인용 횟수 :
19 인용 특허 :
9 |
초록
▼
Traction chain for a series hybrid vehicle comprising an engine (10) which drives an alternator (11), an electric traction motor (21), a inverter which enables the electric traction motor to be operated at a torque set value CCset, an accelerator available for use by the driver of the vehicle, an ac
Traction chain for a series hybrid vehicle comprising an engine (10) which drives an alternator (11), an electric traction motor (21), a inverter which enables the electric traction motor to be operated at a torque set value CCset, an accelerator available for use by the driver of the vehicle, an actuator (15) which acts on the engine, a controller (3) for the traction chain loaded with a model of the engine's operation and loaded with a program which, from the position of the accelerator, allows a pair (Rth/set, PPset) of set values to be obtained for the revolution speed Rth of the engine and for the position of the actuator (15), the said controller making it possible to control the position of the said actuator on the basis of the said set value PPset for the position of the actuator and to calculate a torque set value CCset for the electric traction motor or motors as a function of the deviation between the measured speed Rth and the set value Rth/set for the revolution speed of the engine.
대표청구항
▼
What is claimed is: 1. Traction chain for a series hybrid vehicle comprising: an engine (10) which drives an alternator (11); at least one electric traction motor (21) connected to the alternator by a rectifier (13), by an electric line (12) and a inverter (22), the inverter enabling the electric
What is claimed is: 1. Traction chain for a series hybrid vehicle comprising: an engine (10) which drives an alternator (11); at least one electric traction motor (21) connected to the alternator by a rectifier (13), by an electric line (12) and a inverter (22), the inverter enabling the electric traction motor(s) to be operated at a torque set value CCset, and the electric line enabling the transfer of electric traction power; an accelerator (CA) available for use by the driver of the vehicle; an actuator (15) that acts on the engine; a controller (3) of the traction chain loaded with a model of the operation of the engine and loaded with a program which, from the position of the accelerator, makes it possible to obtain a pair (Rth/set, PPset) of set values for the revolution speed Rth of the engine and for the position PP of the actuator ( 15), the said controller making it possible to: control the position of the said actuator on the basis of the said set value PPset for the position of the actuator, with calculation iterations, at each calculation iteration, calculate a torque set value CCset for the electric traction motor(s) as a function of the difference between the measured speed R th and the set value Rth/set for the revolution speed of the engine in order to match said set value Rth/set. 2. Traction chain according to claim 1, in which said model comprises at least a first equation giving the speed Rth as a function of the engine power Pth available at the output shaft of the engine and at least a second equation giving the position PP of the actuator as a function of the speed Rth, and in which the said program enables the effective position of the actuator CA to be translated into an engine power set value Pth/set and then the engine power set value Pth/set to be translated into a speed set value Rth/set and then the speed set value to be translated into an actuator position set value PPset. 3. Traction chain according to claim 1, in which the said model comprises at least a first equation giving the speed Rth as a function of the engine power Pth available at the output shaft of the engine and at least a second equation giving the position PP of the actuator as a function of the engine power Pth, and in which the said program enables the accelerator position to be translated into an engine power set value Pth/set and then the engine power set value Pth/set to be translated into a speed set value R th/set and the engine power set value Pth/set to be translated into an actuator position set value PPset. 4. Traction chain according to claims 2 or 3 in which the said first and second equations both represent an operational mode of the engine in which the specific fuel consumption is minimum. 5. Traction chain according to claims 2 or 3 in which the said first and second equations both represent an operational mode of the engine in which the pollutant emission is minimum. 6. Traction chain according to any of claims 1, 2 or 3, also comprising a device capable of absorbing electrical energy, connected to the said electric line via a braking control unit (14) and in which the said braking control unit is activated when the accelerator CA is below a predetermined threshold, so as to command the controller to send to the at least one electric motor a braking torque set value CC set=CCf. 7. Traction chain according to claim 4, also comprising a device capable of absorbing electrical energy, connected to the said electric line via a braking control unit (14) and in which the said braking control unit is activated when the accelerator CA is below a predetermined threshold, so as to command the controller to send to the at least one electric motor a braking torque set value CCset =CCf. 8. Traction chain according to claim 5, also comprising a device capable of absorbing electrical energy, connected to the said electric line via a braking control unit (14) and in which the said braking control unit is activated when the accelerator CA is below a predetermined threshold, so as to command the controller to send to the at least one electric motor a braking torque set value CCset =CCf. 9. Traction chain according to claim 6, in which the said predetermined threshold of the accelerator control CA is proportional to the speed of the vehicle. 10. Traction chain according to claim 1, in which the said program enables the determination of a dynamic minimum speed threshold Rth/set/min for the speed set value such that the voltage delivered by the alternator (11) and the rectifier (13) to the electric line (12) is greater than or equal to the minimum supply voltage of the electric traction motor(s) (21), the said dynamic minimum threshold taking account of the speed of the vehicle, the torque set value CCset and the engine power set value P th/set. 11. Traction chain according to claim 1, in which the said controller comprises a program enabling the calculation of an anticipated value CCA of the torque set value of the electric traction motor(s), and the delivery of a torque set value CCset to the electric traction motor(s) equal to the sum CCset=CCA+ CCR. 12. Traction chain according to claim 2, in which the said program enabling the translation of the accelerator position into an engine power set value Pth/set determines, from the accelerator position, a percentage "x %" of a maximum engine power Pth/max that can be absorbed by the vehicle, and determines the said maximum engine power Pth/max from the speed of the vehicle. 13. Traction chain according to claim 3, in which the said program enabling the translation of the accelerator position into an engine power set value Pth/set determines, from the accelerator position, a percentage "x %" of a maximum engine power Pth/max that can be absorbed by the vehicle, and determines the said maximum engine power Pth/max from the speed of the vehicle.
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