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.:
Date of Patent:
Sep. 11, 2018
Filed:
Feb. 19, 2014
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Hajime Suzuki, Tokyo, JP;
Hiroshi Yoshizumi, Tokyo, JP;
Mitsubishi Heavy Industries Engine & Turbocharger, Ltd., Kanagawa, JP;
Abstract
An object is to provide a precombustion-chamber fuel supply device for a precombustion-chamber gas engine having high reliability and low operation cost by reducing outflow of fuel gas to the precombustion chamber in the exhaust stroke and dispersion of the amount of fuel gas supplied to the cylinders, which makes it possible to cut fuel consumption and to achieve stable combustion. A gas internal combustion engine of a Miller-cycle type includes: a main chamberdefined between a piston and a cylinder head; a precombustion chamberwhich communicates with the main chambervia a nozzleand in which fuel gas is combusted by a spark plug; a gas supply channel to precombustion chamberfor supplying the fuel gas to the precombustion chamber; and a check valvedisposed in the gas supply channel to precombustion chamberand configured to open due to a pressure decrease in the precombustion chamberat a BDC of an intake stroke of a Miller cycle in which the piston closes an intake valve before the BDC of the intake stroke so as to allow supply of the fuel gas to the precombustion chamber