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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 9816430 B1

PDFFull Text
Date of Patent:
Nov. 14, 2017

Filed:

Oct. 20, 2014

Pre-combustion-chamber type gas engine

Applicant:

Mitsubishi Heavy Industries, Ltd., Tokyo, JP;

Inventors:

Akihiro Yuuki, Tokyo, JP;

Daisuke Takemoto, Tokyo, JP;

Yuta Furukawa, Tokyo, JP;

Assignee:

Mitsubishi Heavy Industries, Ltd., Tokyo, JP;

Attorney:

Berkeley Law & Technology Group, LLP

Primary Examiner:

Mahmoud Gimie

Int. Cl.
CPC ...
F02B 19/08 (2006.01); F02B 19/12 (2006.01); F02B 19/10 (2006.01); F02M 21/02 (2006.01); F02B 43/04 (2006.01); F02B 19/18 (2006.01);
U.S. Cl.
CPC ...
F02B 19/08 (2013.01); F02B 19/108 (2013.01); F02B 19/12 (2013.01); F02B 19/18 (2013.01); F02B 43/04 (2013.01); F02M 21/02 (2013.01); F02M 21/0242 (2013.01); F02M 21/0248 (2013.01); F02M 21/0275 (2013.01); F02M 21/0281 (2013.01); Y02T 10/125 (2013.01); Y02T 10/32 (2013.01);
Abstract

An object is to improve a trap effect to trap ignition fuel gas supplied to a pre-combustion chamber and reduce an amount of non-combusted ignition fuel gas flowing out of the pre-combustion chamber to suppress a decrease in combustion efficiency. A pre-combustion-chamber type gas engine includes: a pre-combustion chamber Sr disposed on a cylinder head portion; a spark plugdisposed on an upper part of the pre-combustion chamber Sr; a pre-combustion-chamber gas supply mechanism configured to supply ignition fuel gas 'g' to the pre-combustion chamber Sr via gas supply channels for the pre-combustion chamberandwith an opening on an upper part of the pre-combustion chamber Sr; and a check valvedisposed in the gas supply channelfor the pre-combustion chamber. The opening of the gas supply channelfor the pre-combustion chamber is disposed on a lower surface of a cover memberforming the pre-combustion chamber Sr or on an upper section of a side wall of a pre-combustion-chamber member, the opening facing in a tangent direction of a side-wall inner peripheral surfaceof the pre-combustion-chamber member. The ignition fuel gas 'g' supplied to the pre-combustion chamber Sr forms a swirl flow swhich swirls about a longitudinal axis x of the pre-combustion chamber Sr inside the pre-combustion chamber Sr.

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