[특허]Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient

Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C10M-107/02
출원번호	US-0016474 (2011-01-28)
등록번호	US-8759267 (2014-06-24)
발명자 / 주소	Tellier, Kathleen H. Carey, Vincent M. Crouthamel, Kevin L.
출원인 / 주소	ExxonMobil Research and Engineering Company
대리인 / 주소	Migliorini, Robert A.
인용정보	피인용 횟수 : 0 인용 특허 : 143

초록 ▼

The present invention is directed to a method for improving the fuel efficiency of low and medium speed engine oil compositions by reducing the traction coefficient of the oil by formulating the oil using at least two base stocks of different kinematic viscosity wherein the differences in kinematic

대표청구항 ▼

1. A method for improving the fuel economy of large low and medium speed engines that reach surface speeds of at least about 100 mm/s and are lubricated by an engine oil by reducing the traction coefficient of the engine oil used to lubricate the engine by employing as the engine oil a lubricating oil comprised of a base oil comprising a bimodal blend of two different base oils, the first base oil being one or more oils selected from the group consisting of Group I, Group II and Group III base oils, said first base oil having a kinematic viscosity at 100° C. of from 2 to 4.2 mm2/s and a second base oil selected from one or more oils selected from Group IV base oils having a kinematic viscosity at 100° C. of 150 to 1200 mm2/s, the difference in kinematic viscosity between the first and second base oils being at least 140 mm2/s, the combination of the first and second base oils having a kinematic viscosity at 100° C. of 13 to 25 mm2/s or less wherein the improvement in fuel economy is evidenced by the traction coefficient of the engine oil employing the bimodal blend being lower than the traction coefficient of engine oils which are not bimodal or which are not bimodal to the same degree as recited or which are based on mixtures of two or more Group I base oils or mixtures of two or more Group II base oils or mixtures of Group I and Group II base oils. 2. The method of claim 1 wherein the second base oil is a PAC base oil. 3. The method of claim 2 wherein the second base oil is made employing metallocene catalysis. 4. The method of claim 2 wherein the second base oil is PAO base oil characterized by not more than 5.0 wt % of the polymer having a molecular weight of greater than 45,000 Daltons.

이 특허에 인용된 특허 (143)

Winter Andreas (Kelkheim DEX) Antberg Martin (Hofheim am Taunus DEX) Rohrmann Jrgen (Neufahrn DEX), 1-Olefin polymer wax, and a process for the preparation thereof.
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A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허에 인용된 특허 (143)

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연합인증

Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

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이 특허에 인용된 특허 (143)

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