Internal-combustion engines – Miscellaneous – Fuels – lubricants and additives
Reexamination Certificate
2007-03-01
2010-06-29
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Miscellaneous
Fuels, lubricants and additives
C123S435000, C123S703000, C423S213200, C423S213500, C502S244000, C502S318000
Reexamination Certificate
active
07743738
ABSTRACT:
The present invention relates to an apparatus and method for delivering tungsten into a fuel combustion system or to the exhaust therefrom. By the present invention, tungsten from the lubricant or the fuel will interact with combustion products and, in particular, phosphorus, sulfur, and/or lead from the combustion products. In this manner, the tungsten scavenges or inactivates harmful materials which have migrated into the fuel or combustion products, and which can otherwise poison catalytic converters, sensors and/or automotive on-board diagnostic devices The present invention can also lead to improved durability of exhaust after treatment systems. A lubricant in accordance with the present invention is also disclosed.
REFERENCES:
patent: 2511028 (1950-06-01), Whitman
patent: 2606924 (1952-08-01), Whitman
patent: 2606925 (1952-08-01), Whitman
patent: 2606928 (1952-08-01), Barkdoll et al.
patent: 3230034 (1966-01-01), Stiles
patent: 3442808 (1969-05-01), Thornton et al.
patent: 3697574 (1972-10-01), Piasek et al.
patent: 3914307 (1975-10-01), Massie
patent: 3959374 (1976-05-01), Brennan et al.
patent: 4144181 (1979-03-01), Elliott et al.
patent: 4293687 (1981-10-01), Weissel et al.
patent: 4340689 (1982-07-01), Joffrion
patent: 4394523 (1983-07-01), Allen
patent: 4448995 (1984-05-01), Allen
patent: 4587329 (1986-05-01), Tomalia et al.
patent: 4670515 (1987-06-01), Olivier
patent: 4737550 (1988-04-01), Tomalia
patent: 4754070 (1988-06-01), Casey et al.
patent: 4948842 (1990-08-01), Olivier
patent: 5075383 (1991-12-01), Migdal et al.
patent: 5219480 (1993-06-01), Gutierrez et al.
patent: 5259968 (1993-11-01), Emert et al.
patent: 5439607 (1995-08-01), Patil
patent: 5498355 (1996-03-01), Perozzi et al.
patent: 5578237 (1996-11-01), Emert et al.
patent: 5747665 (1998-05-01), Thompson
patent: 6107258 (2000-08-01), Esche et al.
patent: 6569818 (2003-05-01), Nakazato et al.
patent: 6629407 (2003-10-01), Roos et al.
patent: 6821932 (2004-11-01), Guinther et al.
patent: 6941743 (2005-09-01), Roos et al.
patent: 6949152 (2005-09-01), Hallit et al.
patent: 2007/0027045 (2007-02-01), Kleijwegt
patent: 2007/0197407 (2007-08-01), Bardasz et al.
Aradi Allen A.
Rainear Dennis H.
Roos Joseph W.
Afton Chemical Corporation
Coleman Keith
Cronin Stephen K
Thomas, Karceski, Raring & Teague, P.C.
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