IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0824070
(2010-06-25)
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등록번호 |
US-8359829
(2013-01-29)
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발명자
/ 주소 |
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
190 |
초록
▼
Systems, methods, and computer-readable storage media directed toward reducing emissions are disclosed. In some aspects, a hybrid powertrain may include an engine and a motor. A combination of output from the engine and motor may be chosen that reduces a concentration of one or more pollutants. In s
Systems, methods, and computer-readable storage media directed toward reducing emissions are disclosed. In some aspects, a hybrid powertrain may include an engine and a motor. A combination of output from the engine and motor may be chosen that reduces a concentration of one or more pollutants. In some cases, an exhaust aftertreatment system may be remotely activated, which may reduce warmup time associated with emissions mitigation.
대표청구항
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1. A powertrain comprising: an engine;a motor;an axle configured to be coupled to a load;the engine, motor, and axle coupled such that a combination of engine output and motor output may be delivered to the load;a power source coupled to the motor; anda powertrain control unit coupled to the engine,
1. A powertrain comprising: an engine;a motor;an axle configured to be coupled to a load;the engine, motor, and axle coupled such that a combination of engine output and motor output may be delivered to the load;a power source coupled to the motor; anda powertrain control unit coupled to the engine, motor, and power source, the powertrain control unit configured to receive a demand for output to be provided to the load and determine an operating condition comprising a combination of engine output and motor output that fulfills the demand, the powertrain control unit including a processor and coupled to a computer readable storage medium having embodied thereon a program executable by the processor to perform a method comprising: receiving a demand for output to be provided to the load;predicting a first emissions profile that would result from fulfilling the demand under a first operating condition, the first emissions profile characterizing one or more criteria pollutants in an exhaust stream from the engine during operation according to the first operating condition;predicting a second emissions profile that would result from fulfilling the demand under a second operating condition, the second emissions profile having a reduced amount of at least one criteria pollutant as compared to the first emissions profile; andcontrolling the motor and engine to fulfill the demand according to the second operating condition. 2. The powertrain of claim 1, wherein the second emissions profile has an increased amount of CO2 as compared to the first emissions profile. 3. The powertrain of claim 1, wherein the reduced amount of the criteria pollutant in the second emissions profile includes at least one of soot, NOx, a hydrocarbon, NH3, and CO, and the second emissions profile includes an increased amount of at least one other of soot, NOx, a hydrocarbon, NH3, and CO, as compared to the first emissions profile. 4. The powertrain of claim 1, wherein: the combination of engine output and motor output according to the second operating condition has a larger portion of the output provided by the motor than does the combination according to the first operating condition. 5. The powertrain of claim 1, wherein determining the first and second emissions profiles includes: receiving duty cycle information associated with the demand; andusing the duty cycle information to determine the second operating condition. 6. The powertrain of claim 5, wherein the duty cycle information includes a history of operating conditions used to fulfill prior demands. 7. The powertrain of claim 1, further comprising: measuring at least one value of a parameter associated with the exhaust stream under the second operating condition;calculating a first expected value of the parameter under the second operating condition;determining a first difference between the measured and first expected values;predicting a third emissions profile associated with fulfilling the demand under a third operating condition,calculating a second expected value of the parameter under the third operating condition;determining a second difference between the measured and second expected values, the second difference lower than the first difference; andfulfilling the demand according to the third operating condition. 8. The powertrain of claim 7, wherein predicting the third emissions profile includes using a previously recorded difference between the measured and expected values of the parameter during a previous operation of the powertrain. 9. The powertrain of claim 5, wherein the duty cycle information includes a geographical location at which the powertrain fulfills the demand for output. 10. The powertrain of claim 5, wherein the duty cycle information includes a type of equipment associated with the load. 11. The powertrain of claim 5, wherein the duty cycle information includes a set of expected future demands. 12. The powertrain of claim 5, wherein the duty cycle information includes fuel information. 13. The powertrain of claim 5, wherein the duty cycle information includes a time. 14. The powertrain of claim 1, further comprising an aftertreatment system in fluidic communication with the engine and configured to treat the exhaust stream, the aftertreatment system coupled to the powertrain control unit and the power source, wherein the second operating condition includes: activating the aftertreatment system with the power source prior to delivering engine output to the load; andfulfilling the demand using the motor until the aftertreatment system is activated. 15. The powertrain of claim 14, wherein activating includes heating the aftertreatment system. 16. The powertrain of claim 14, wherein the second operating condition includes delaying a fulfillment of the demand until the aftertreatment system is activated. 17. The powertrain of claim 14, further comprising a sensor coupled to the aftertreatment system and the powertrain control unit, the sensor configured to sense when the aftertreatment system has been activated. 18. The powertrain of claim 1, wherein the power source includes a supply of electricity derived from an electrical grid. 19. The method of claim 2, wherein the emissions profiles include an integrated global warming potential characterizing the aggregate effect of all species in the exhaust stream, and the second emissions profile has a lower integrated global warming potential than does the first emissions profile.
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