Hybrid system comprising a supercharging system and method for operation
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-033/44
F02B-033/00
B60K-001/00
B60K-006/20
B60K-006/485
F02D-041/00
B60K-006/24
B60W-010/02
B60W-010/30
B60W-020/00
F02B-037/013
F02B-039/10
F02B-039/12
F02B-033/40
F02B-037/10
F02N-011/04
B60L-011/14
B60K-025/00
F02N-011/00
출원번호
US-0131208
(2012-06-28)
등록번호
US-9567922
(2017-02-14)
국제출원번호
PCT/EP2012/062618
(2012-06-28)
§371/§102 date
20140115
(20140115)
국제공개번호
WO2013/004595
(2013-01-10)
발명자
/ 주소
Löfgren, Isak
출원인 / 주소
KASI TECHNOLOGIES AB
대리인 / 주소
Babcock IP, PLLC
인용정보
피인용 횟수 :
3인용 특허 :
11
초록▼
The present invention relates to a hybrid system comprising a supercharging system for an internal combustion engine (1), the hybrid system comprising: a charging device (6) with a turbine (7) connected to a compressor (8) via a compressor shaft (9), the compressor having a high speed shaft (30); a
The present invention relates to a hybrid system comprising a supercharging system for an internal combustion engine (1), the hybrid system comprising: a charging device (6) with a turbine (7) connected to a compressor (8) via a compressor shaft (9), the compressor having a high speed shaft (30); a planetary gear (25) coupled between the high speed shaft (30) and an electric motor/generator (20); a clutch (18a); and a power transmission for connecting a crank shaft (4) of the combustion engine (1) to the electric motor/generator (20) via the clutch (18a); wherein the hybrid system further comprises a system control (23) configured to operate the hybrid system in different operating modes according to a control sequence based on one, or a plurality of, input parameters representative of operational properties of the hybrid system.
대표청구항▼
1. A hybrid system of an internal combustion engine (1) comprising: at least one charging device (6) with a turbine (7) connected to a compressor (8) via a compressor shaft (9), the compressor having a high speed shaft (30);a planetary gear (25) coupled between the high speed shaft (30) and an elect
1. A hybrid system of an internal combustion engine (1) comprising: at least one charging device (6) with a turbine (7) connected to a compressor (8) via a compressor shaft (9), the compressor having a high speed shaft (30);a planetary gear (25) coupled between the high speed shaft (30) and an electric motor/generator (20); at least one clutch;wherein the at least one clutch includes a first clutch (18a), a second clutch (18b), and a third clutch (18c); a power transmission connecting a crank shaft (4) of the combustion engine (1) to the electric motor/generator, (20) via the first clutch (18a);at least one of an engine controller (28) and a vehicle controller (29) arranged to determine at least one of input parameters including an engine speed (rpm), an engine throttle position, and a driver pedal position, andan electronic control system (23) configured to operate the hybrid system in a plurality of different operating modes according to a control sequence based on the at least one of said input parameters including the engine speed (rpm), the engine throttle position, and the driver pedal position;wherein the plurality of said different operating modes comprising:an operating mode A where the electric motor drives auxiliary loads of the internal combustion engine (1);an operating mode B where the electric motor starts, or stops, the internal combustion engine (1);an operating mode C where the electric motor propels the vehicle; andan operating mode D where brake energy from retardation of the vehicle is regenerated to electrical energy. 2. The hybrid system according to claim 1, wherein the planetary gear (25) is coupled to the electric motor/generator (20) via the second clutch (18b). 3. The hybrid system according to claim 1, wherein the third clutch (18c) connects the power transmission to the crank shaft (4) of the combustion engine (1). 4. The hybrid system according to claim 1, wherein the plurality of said different operating modes further comprises: an operating mode E where exhaust gas energy is regenerated to electrical energy;an operating mode F where exhaust gas energy regenerated to mechanical energy;an operating mode G comprising electrically driven supercharging of the internal combustion engine (1); andan operating mode H comprising mechanically driven supercharging of the internal combustion engine (1). 5. The hybrid system according to claim 1, wherein the electronic control system comprises a mode selecting subsystem arranged to select one of the plurality of said different operating modes of the hybrid system based the input parameters according to a mode selector algorithm. 6. The hybrid system according to claim 1, wherein the electronic control system comprises a mode controlling subsystem arranged to control the hybrid system based on the selected operating mode and the input parameters according to a mode control sequence. 7. The hybrid system according to claim 6, further comprising: the third clutch (18c) for connecting the power transmission to the crank shaft (4) of the combustion engine (1); wherein the mode control sequence comprises:engaging or disengaging the first clutch, second clutch and third clutch (18a, 18b, 18c), andoperating the electric motor (20) in drive mode or generate mode based on the selected operating mode (Mode) according to the following: Mode:18a18b18c20AEngagedDisseng.Disseng.DriveBEngagedDisseng.EngagedDriveCEngagedN/AEngagedDriveDEngagedN/AEngaged.Generate. 8. The hybrid system according to claim 6, further comprising: the third clutch (18c) for connecting the power transmission to the crank shaft (4) of the combustion engine (1); wherein the mode control sequence comprises engaging or disengaging the first clutch, second clutch and third clutch (18a, 18b, 18c),operating the electric motor,opening or closing an air by-pass valve (21), andopening or closing a waste gate (22) based on the selected operating mode (Mode) according to the following: Mode:18a18b18c202122EN/AEngagedN/AGenerateN/AN/AFEngagedEngagedEngagedGenerateN/AN/AGDisseng.EngagedEngagedDriveClosedN/AHEngagedEngagedEngagedN/AClosedN/A. 9. The hybrid system according to claim 6, further comprising at least one of the engine controller (28) and the vehicle controller (29) arranged to determine a first vehicle parameter representative of the engine rpm, a second vehicle parameter representative of at least one of the engine throttle position and derivatives thereof, and a third vehicle parameter representative of at least one of the driver pedal position and derivatives thereof, wherein the electronic control system (23) is arranged to control the hybrid system based on the first, second and third vehicle parameters. 10. The hybrid system according to claim 6, further comprising a battery operatively coupled to the electric motor/generator; wherein the electronic control system (23) is configured to execute at least one of: determining a change of the driver pedal position;closing the air by-pass valve (21);determining threshold state-of-charge (SOC) value of the battery; anddetermining available electric power by comparing battery state-of-charge (SOC) with the predetermined threshold SOC-value. 11. The hybrid system according to claim 10, wherein, if battery state-of-charge is above the threshold SOC-value, the electronic control system (23) is configured to operate the electric motor in drive mode to generate supercharging until at least one of a reference pressure and a mass flow (p3) is obtained. 12. The hybrid system according to claim 1, wherein the charging device includes a first turbo charging device (6a) with a first turbine (7a) connected to a first compressor via a first compressor shaft (9a), and a second turbo charging device (6b) with a second turbine (7b) connected to a second compressor via a second compressor shaft (9b). 13. The hybrid system according to claim 12, wherein the plurality of said operating modes comprises: an operating mode I wherein the first turbo charging device drives the supercharging in a single-state supercharging operation at low flow rates;an operating mode J wherein the second turbo charging device drives the supercharging in a single-state supercharging operation at high flow rates; andan operating mode K wherein the electric motor/generator, controls rotational speed of the first turbo charging device during a two-state supercharging operation. 14. The hybrid system according to claim 13, wherein the plurality of said operating modes comprises: an operating mode A where the electric motor drives auxiliary loads of the internal combustion engine (1):an operating mode B where the electric motor starts, or stops, the internal combustion engine (1):an operating mode C where the electric motor propels the vehicle: and an operating mode D where brake energy from retardation of the vehicle is regenerated to electrical energy; and wherein the hybrid system operates in a plurality of different operating modes of A-K. 15. The hybrid system according to claim 13; wherein the mode control sequence executes at least one of: engaging or disengaging the first clutch, second clutch and third clutch (18a, 18b, 18c),operating the electric motor (20) in drive mode or generate mode,opening or closing a first and a second air by-pass valve (21a,21b), andopening or closing a first and a second waste gate (22a, 22b) based on the selected operating mode (Mode) according to the following: Mode:18a18b18c2021a21b22a22bIN/AN/AN/AN/AClosedOpenN/AOpenJN/AN/AN/AN/AOpenClosedOpenN/AKN/AN/AN/AN/AClosedClosedN/AN/A. 16. The hybrid system according to claim 12, wherein the at least one of said input parameters further comprises: at least one of a first pressure and a mass flow parameter representative of air intake operational state (p1);at least one of a second pressure and a mass flow parameter representative of second compressor operational state (p2);at least one of a third pressure and a mass flow parameter representative of first compressor operational state (p3);at least one of a fourth pressure and a mass flow parameter representative of exhaust gas operational state (p4);at least one of a fifth pressure and a mass flow parameter representative of first turbine operational state (p5); andat least one of a sixth pressure and a mass flow parameter representative of second turbine operational state (p6). 17. The hybrid system according to claim 1, wherein the electric motor/generator (20) controls rotational speed of the at least one charging device (6; 6a, 6b). 18. A hybrid system of an internal combustion engine (1) having a supercharging system, the hybrid system comprising: a charging device (6) with a turbine (7) connected to a compressor (8) via a compressor shaft (9), the compressor having a high speed shaft (30);a planetary gear (25) coupled between the high speed shaft (30) and an electric motor/generator (20);a clutch (18a);a power transmission connecting a crank shaft (4) of the combustion engine (1) to the electric motor/generator, (20) via the clutch (18a); andan electronic control system (23) configured to operate the hybrid system in a plurality of different operating modes according to a control sequence based on at least one of a plurality of input parameters representative of operational properties of the hybrid system; wherein the electric motor/generator (20) comprises a sensor configured to monitor an actual turbo speed without having a turbo speed sensor. 19. A hybrid system of an internal combustion engine (1) having a supercharging system, the hybrid system comprising: a charging device (6) with a turbine (7) connected to a compressor (8) via a compressor shaft (9), the compressor having a high speed shaft (30);a planetary gear (25) coupled between the high speed shaft (30) and an electric motor/generator (20);a clutch (18a);a power transmission connecting a crank shaft (4) of the combustion engine (1) to the electric motor/generator, (20) via the clutch (18a); andan electronic control system (23) configured to operate the hybrid system in a plurality of different operating modes according to a control sequence based on at least one of a plurality of input parameters representative of operational properties of the hybrid system; wherein the charging device comprises a variable nozzle turbine, the variable nozzle turbine being controlled by determining an error value of a blade speed ratio, BSR(error), defined by a difference in a measured blade speed ratio, BSR(error), and a desired blade speed ratio BSR(desired). 20. A method of operating a hybrid propulsion system of a vehicle having an internal combustion engine (1); the hybrid propulsion system comprising: a supercharging system for the internal combustion engine (1) including an exhaust gas propelled turbo supercharging system, a mechanical supercharging system, and an electrical supercharging/regenerating system; wherein the exhaust gas propelled turbo supercharging system includes a turbo charging device (6); the turbo charging device comprising a turbine (7) and a compressor (8), the compressor being arranged on a compressor shaft (9); the exhaust gas propelled turbo supercharging system coupling the turbine (8) to at least one exhaust outlet of the internal combustion engine (1), the electrical supercharging/regenerating system coupling an electric motor/generator (20) to the compressor shaft via a planetary gear (25), and the mechanical supercharging system coupling a crankshaft of the engine (1) to the electric motor via at least one clutch, wherein the at least one clutch includes a first clutch (18a), a second clutch (18b), and a third clutch (18c); and wherein the first clutch (18a) couples a crank shaft of the engine (1) to the electric motor; wherein the second clutch (18b) couples the planetary gear/traction device (25) to the electric motor/generator (20); wherein the third clutch (18c) connects the power transmission to the crank shaft (4) of the combustion engine (1); the method of operating the hybrid system in at least one of a plurality of different operating modes via an electronic control system (23) comprising at least one of: in an operating mode A, driving loads of the internal combustion engine (1) with the electric motor/generator;in an operating mode B, starting, or stopping, the internal combustion engine (1) with the electric motor/generator;in an operating mode C, propelling the vehicle with the electric motor/generator; andin an operating mode D, regenerating electrical energy from brake energy by retarding of the vehicle. 21. The method according to claim 20, wherein the plurality of said different operating modes comprises: an operating mode E where exhaust gas energy is regenerated to electrical energy;an operating mode F where exhaust gas energy is regenerated to mechanical energy;an operating mode G comprising electrically driven supercharging of the internal combustion engine (1);an operating mode H comprising mechanically driven supercharging of the internal combustion engine (1). 22. The method according to claim 20, wherein the exhaust gas turbo charging device further comprises a first turbo charging device (6a) with a first turbine (7a) connected to a first compressor via a first compressor shaft (9a), and a second turbo charging device comprising a second turbine (7b) and a second compressor (8b), the second compressor being arranged on a second compressor shaft (9b). 23. The method according to claim 22, wherein the plurality of said different operating modes comprises: in an operating mode I, driving the first turbo charging device in a single-state supercharging operation at low flow rates;in an operating mode J, driving the second turbo charging device in a single-state supercharging operation at high flow rates;in an operating mode K, controlling, with the electrical motor/generator, the rotational speed of the first turbo charging device during a two-state supercharging operation. 24. A control sequence for a hybrid system including an exhaust gas propelled turbo supercharging system, a mechanical supercharging system, and an electrical supercharging/regenerating system, a charging devices and an electric motor/generator, operatively connected to the charging device; wherein the hybrid system is arranged to operate in different operating modes;the control sequence being configured for executing ofengaging or disengaging the first clutch, second clutch and third clutch (18a, 18b, 18c);wherein the first clutch (18a) couples a crank shaft of the engine (1) to the electric motor/generator;wherein the second clutch (18b) couples a planetary gear (25) to the electric motor/generator (20);wherein the third clutch (18c) connects a power transmission to the crank shaft (4) of the combustion engine (1); andoperating an electric motor (20) in drive mode or generate mode based on a selected operating mode according to the following: Mode:18a18b18c20AEngagedDisseng.Disseng.DriveBEngagedDisseng.EngagedDriveCEngagedN/AEngagedDriveDEngagedN/AEngaged.Generate 25. The control sequence for a hybrid system according to claim 24, the control sequence being configured for executing of engaging or disengaging the first clutch, second clutch and third clutch (18a, 18b, 18c), operating the electric motor (20) in drive mode or generate mode, opening or closing an air by-pass valve (21), and opening or closing a waste gate (22) of the hybrid system based on a selected operating mode according to the following: Mode:18a18b18c202122EN/AEngagedN/AGenerateN/AN/AFEngagedEngagedEngagedGenerateN/AN/AGDisseng.EngagedEngagedDriveClosedN/AHEngagedEngagedEngagedN/AClosedN/A. 26. The control sequence for a hybrid system according to claim 24, wherein the exhaust gas turbo charging device further comprises a first turbo charging device (6a) with a first turbine (7a) connected to a first compressor via a first compressor shaft (9a), and a second turbo charging device comprising a second turbine (7b) and a second compressor (8b), the second compressor being arranged on a second compressor shaft (9b). 27. The control sequence for a hybrid system according to claim 26, the control sequence being configured for executing of: engaging or disengaging the first clutch, second clutch and third clutch (18a, 18b, 18c), operating an electric motor (20) in drive mode or generate mode, opening or closing a first and a second air by-pass valve (21a, 21b), and opening or closing a first and a second waste gate (22a, 22b) of the hybrid system based on a selected operating mode according to the following: Mode:18a18b18c2021a21b22a22bIN/AN/AN/AN/AClosedOpenN/AOpenJN/AN/AN/AN/AOpenClosedOpenN/AKN/AN/AN/AN/AClosedClosedN/AN/A.
Hoess, Bernhard; Neumann, Jens; Engstle, Armin, Vehicle comprising a charged combustion engine and method for operating a vehicle comprising a charged combustion engine.
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