[특허]Method for improved vehicle performance

[미국특허] Method for improved vehicle performance 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-003/00
출원번호	US-0528218 (2000-03-17)
발명자 / 주소	Surnilla, Gopichandra Bidner, David Karl
출원인 / 주소	Ford Global Technologies, Inc.
대리인 / 주소	Lippa, Allan J.Russell, John D.
인용정보	피인용 횟수 : 4 인용 특허 : 93

초록 ▼

An engine control system for managing lean NOx trap decontamination uses associated fuel economy impacts to determine when decontamination is enabled. In particular, a maximum achievable benefit provided by lean operation with a decontaminated NOx trap, a present fuel economy benefit being provided by lean operation, and a fuel economy penalty for performing decontamination are used. When a resulting benefit is greater than a penalty, decontamination is enabled.

대표청구항 ▼

1. A method of determining a penalty of a decontamination cycle, the decontamination cycle for an emission control device coupled to an internal combustion engine, the method comprising: determining a distance between two decontamination cycles; calculating an excess quantity of fuel used during any decontamination cycle; and generating the penalty based on said excess quantity of fuel and said distance. 2. The method recited in claim 1 further comprising storing the penalty as a function of an operating condition. 3. The method recited in claim 1 wherein said generating further comprises generating the penalty based on a ratio of said excess quantity of fuel and said distance. 4. The method recited in claim 3 further comprising storing the penalty as a function of operating conditions including at least one of engine speed, vehicle speed, engine torque, and exhaust gas temperature experienced before performing said decontamination cycle. 5. An article of manufacture comprising: a computer storage medium having a computer program encoded therein for determining a penalty of a decontamination cycle, the decontamination cycle for an emission control device coupled to an internal combustion engine, said computer storage medium comprising: code for determining a distance between two decontamination cycles; code for calculating an excess quantity of fuel used during any decontamination cycle; and code for generating the penalty based on said excess quantity of fuel and said distance. 6. The article recited in claim 5 further comprising code for storing the penalty as a function of an operating condition. 7. The article recited in claim 5 wherein said code for generating further comprises code for generating the penalty based on a ratio of said excess quantity of fuel and said distance. 8. A method for determining a penalty of a decontamination cycle for an emission control device coupled to an internal combustion engine, the method comprising: calculating a penalty incurred by performing a decontamination cycle that removes sulfur compounds contaminating the emission control device; and adjusting an engine operating parameter based on said penalty, wherein said decontamination cycle comprises operating the engine to oscillate around stoichiometry while the emission control device is at a sufficiently high temperature. 9. A method for determining a penalty of a decontamination cycle for an emission control device coupled to an internal combustion engine, the method comprising: calculating a penalty based on a first quantity of fuel use to operate in one condition associated with the decontamination cycle compared to a second quantity of fuel used to operate in another condition, the decontamination cycle comprising operating the engine oscillatorily about stoichiometry or rich of stoichiometry while the emission control device is above a predetermined temperature, said penalty further based on a distance traveled by the vehicle; and adjusting an engine operating parameter based on said penalty. 10. The method recited in claim 9 wherein said decontamination cycle is scheduled to remove sulfur compounds contaminating the emission control device. 11. The method recited in claim 9 wherein said decontamination cycle removes at least some of sulfur compounds contaminating the emission control device.

이 특허에 인용된 특허 (93) 인용/피인용 타임라인 분석

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Stueven Jeffrey S. (Howards Grove WI), Emission control system for an internal combustion engine.
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[미국특허] Method for improved vehicle performance 원문보기

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이 특허에 인용된 특허 (93) 인용/피인용 타임라인 분석

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[미국특허] Method for improved vehicle performance 원문보기

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