Supercharging system and method for operating a supercharging system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01N-003/22
F02B-037/14
F02B-037/10
F02B-039/10
F02B-039/12
F02B-039/04
F01N-003/20
F01N-011/00
F02B-037/12
F02B-037/24
F02B-037/18
출원번호
US-0779663
(2014-03-20)
등록번호
US-9797300
(2017-10-24)
우선권정보
SE-1350383 (2013-03-26)
국제출원번호
PCT/SE2014/050339
(2014-03-20)
국제공개번호
WO2014/158077
(2014-10-02)
발명자
/ 주소
Löfgren, Isak
출원인 / 주소
KASI TECHNOLOGIES AB
대리인 / 주소
Harness, Dickey & Pierce, P.L.C.
인용정보
피인용 횟수 :
2인용 특허 :
8
초록▼
A supercharging system includes a charging device having a turbine and a compressor, the compressor having a high speed shaft; a planetary gear set coupled to the high speed shaft and an electric motor, or generator, via a low speed drive shaft; a clutch unit; a power transmission for connecting a c
A supercharging system includes a charging device having a turbine and a compressor, the compressor having a high speed shaft; a planetary gear set coupled to the high speed shaft and an electric motor, or generator, via a low speed drive shaft; a clutch unit; a power transmission for connecting a crank shaft of the combustion engine to the drive shaft via the clutch unit; at least one sensor to measure at least one physical parameter of the exhaust gases inside, or after having passed, an exhaust gas catalyzer of the internal combustion engine, the at least one sensor being configured to provide an output signal representing a measured value of the at least one physical parameter; and a system control unit to receive the output signal and to control the speed or effect of the electric motor, or generator, based on the output signal. A method is also disclosed.
대표청구항▼
1. A supercharging system for an internal combustion engine, comprising: a charging device including a turbine and a compressor, said compressor having a high speed shaft;a planetary gear set coupled to said high speed shaft and an electric motor or generator, via a low speed drive shaft;a clutch un
1. A supercharging system for an internal combustion engine, comprising: a charging device including a turbine and a compressor, said compressor having a high speed shaft;a planetary gear set coupled to said high speed shaft and an electric motor or generator, via a low speed drive shaft;a clutch unit;a power transmission for connecting a crank shaft of the combustion engine to the low speed drive shaft via the clutch unit;at least one sensor to measure at least one physical parameter of exhaust gases inside, or after having passed, an exhaust gas catalyzer of said internal combustion engine, the at least one sensor being configured to provide a plurality of output signals, each output signal representing a measured value of said at least one physical parameter; anda system control unit, configured to receive each of said plurality of output signals from the at least one sensor and configured to control, by increasing or decreasing speed or effect of said electric motor or generator, based on each of said plurality of output signals. 2. The supercharging system according to claim 1, wherein the turbine is a variable nozzle turbine comprising at least one variable nozzle turbine vane, wherein the system control unit is adapted to control the speed or effect of said electric motor or generator, in conjunction with said variable nozzle turbine vane based on the plurality of output signals from said at least one sensor. 3. The supercharging system according to claim 1, further comprising an air by-pass valve, wherein the system control unit is adapted to control the speed or effect of said electric motor or generator, in conjunction with an openness ratio of said air by-pass valve based on the plurality of output signals from said at least one sensor. 4. The supercharging system according to claim 1, further comprising an operable waste gate, wherein the system control unit is adapted to control the speed or effect of said electric motor, or generator, in conjunction with said operable waste gate based on the plurality of output signals from said at least one sensor. 5. The supercharging system according to claim 1, wherein the at least one physical parameters from said at least one sensor comprises at least one of the following: at least one of a first pressure and mass flow parameter representative of exhaust gases at a first sensor of the at least one sensor;a first temperature parameter representative of exhaust gases at the first sensor;a first gas composition parameter representative of exhaust gases at the first sensor;at least one of a second pressure and mass flow parameter representative of exhaust gases at a second sensor of the at least one sensor, upon the at least one sensor including the first and the second sensor;a second temperature parameter representative of exhaust gases at the second sensor;a second gas composition parameter representative of exhaust gases at the second sensor;at least one of a third pressure and mass flow parameter representative of exhaust gases in said exhaust gas catalyzer;a third temperature parameter representative of exhaust gases in said exhaust gas catalyzer; anda third gas composition parameter representative of exhaust gases in said exhaust gas catalyzer. 6. The supercharging system according to claim 1, wherein said at least one physical parameter includes at least one of pressure and mass flow, and wherein the turbine of the charging device with the electric motor or generator is configured to be driven until a respective one of said plurality of output signals reaches at least one of a reference value and range. 7. The supercharging system according to claim 1, wherein said at least one physical parameter includes at least one of pressure and mass flow, and wherein the turbine of the charging device with the electric motor or generator is configured to be driven while a respective one of said plurality of output signals maintains at least one of a reference value and range. 8. A method for operating a supercharging system for an internal combustion engine including an exhaust gas propelled turbo supercharging system, a mechanical supercharging system, and an electrical supercharging/regenerating system, the exhaust gas propelled turbo supercharging system including a charging device, the charging device including a turbine and a compressor, the compressor being arranged on a compressor shaft; the exhaust gas propelled turbo supercharging system coupling the turbine to at least one exhaust outlet of the internal combustion engine, the electrical supercharging/regenerating system coupling an electric motor or generator, to the compressor shaft via a planetary gear set, and the mechanical supercharging system coupling a crank shaft of the engine to the electric motor or generator via a clutch,the method comprising:measuring at least one physical parameter of exhaust gases at least one of inside and after having passed an exhaust gas catalyzer of the internal combustion engine,providing a plurality of output signals, of the plurality of output signals, each representing a respective one of a plurality of measured values of said at least one physical parameter, andcontrolling, by increasing or decreasing, speed of said electric motor or generator, based on each respective one of the plurality of output signals. 9. The method according to claim 8, wherein said at least one physical parameter includes at least one of pressure and mass flow, the method further comprising driving the turbine of the charging device with the electric motor or generator until a respective one of said plurality of output signals reaches at least one of a reference value and range. 10. The method according to claim 8, wherein said at least one physical parameter includes at least one of pressure and mass flow, the method further comprising driving the turbine of the charging device with the electric motor or generator while a respective one of said plurality of output signals maintains at least one of a reference value and range. 11. The method according to claim 8, wherein said at least one physical parameter includes temperature, the method further comprising driving the turbine of the charging device with the electric motor or generator until a respective one of said plurality of output signals reaches at least one of a reference value and range. 12. The method according to claim 8, wherein said at least one physical parameter includes temperature, the method further comprising driving the turbine of the charging device with the electric motor or generator while a respective one of said plurality of output signals maintains at least one of a reference value and range. 13. The method according to claim 8, wherein said at least one physical parameter includes exhaust gas composition, the method further comprising driving the turbine of the charging device with the electric motor or generator until a respective one of said plurality of output signals reaches at least one of a reference value and range. 14. The method according to claim 8, wherein said at least one physical parameter includes exhaust gas composition, the method further comprising driving the turbine of the charging device with the electric motor or generator while a respective one of said plurality of output signals maintains at least one of a reference value and range. 15. The method according to claim 8, further comprising, at start of said internal combustion engine, driving the turbine of the charging device with the electric motor or generator, for increasing the exhaust gas pressure and temperature, thereby reducing “light-off” time. 16. The method according to claim 8, wherein said at least one physical parameter includes emission levels, the method further comprising driving the turbine of the charging device with the electric motor or generator during an exhaust gas catalyzer regeneration process. 17. The method according to claim 8, the supercharging system further comprising at least one of an internal combustion engine throttle, variable vanes, an air by-pass valve, a waste gate and an engine control unit, and the method further comprising controlling at least one of the throttle, variable vanes, air by-pass valve, waste gate and variables in the engine control unit for counteracting pressure built by the compressor when the turbine is driven.
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