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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9109498 B1

PDFFull Text
Date of Patent:
Aug. 18, 2015

Filed:

Jul. 21, 2014

Dimethyl ether (dme) enhanced gasoline engine

Applicant:

Ethanol Boosting Systems Llc, Cambridge, MA (US);

Inventors:

John M. Bradley, Manchester, MA (US);

Leslie Bromberg, Sharon, MA (US);

Daniel R. Cohn, Cambridge, MA (US);

Assignee:

Ethanol Boosting Systems, LLC, Cambridge, MA (US);

Attorney:

Nields, Lemack & Frame, LLC

Primary Examiner:

Mahmoud Gimie

Assistant Examiner:

David Hamaoui

Int. Cl.
CPC ...
F02M 43/00 (2006.01); F02B 7/00 (2006.01); B23P 6/00 (2006.01); F02B 1/12 (2006.01); F02B 7/08 (2006.01); F02D 19/06 (2006.01); F02D 19/08 (2006.01); F02M 25/022 (2006.01); F02D 41/30 (2006.01); F02D 21/08 (2006.01); F02D 35/02 (2006.01); F02D 41/00 (2006.01);
U.S. Cl.
CPC ...
F02B 1/12 (2013.01); B23P 6/00 (2013.01); F02B 7/00 (2013.01); F02B 7/08 (2013.01); F02D 19/061 (2013.01); F02D 19/0647 (2013.01); F02D 19/0655 (2013.01); F02D 19/081 (2013.01); F02D 21/08 (2013.01); F02D 35/023 (2013.01); F02D 41/005 (2013.01); F02D 41/0025 (2013.01); F02D 41/3029 (2013.01); F02M 25/0228 (2013.01); F02D 19/066 (2013.01); F02D 19/0689 (2013.01); Y02T 10/36 (2013.01); Y02T 10/47 (2013.01); Y10T 29/49233 (2015.01);
Abstract

An engine having DME pilot ignition is disclosed. DME Pilot ignition creates far more energy than a conventional spark plug, thus minimizes the possibility of misfire in the engine map. DME injection can be used in a number of ways. In one embodiment, DME injection replaces the conventional spark plug in an Otto cycle engine. In another embodiment, DME injection is used in addition to spark ignition to minimize the use of DME. In this embodiment, DME injection is only used during those portions of the engine map where misfire may occur, or during those times when a misfire sensor detects misfire. DME injection can also be used in conjunction with alcohol boosting in other embodiments.

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