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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 9228504 B1

PDFFull Text
Date of Patent:
Jan. 05, 2016

Filed:

Feb. 07, 2013

Diesel engine

Applicant:

Isuzu Motors Limited, Tokyo, JP;

Inventor:

Akira Komatsu, Yokohama, JP;

Assignee:

ISUZU MOTORS LIMITED, Tokyo, JP;

Attorney:

Staas & Halsey LLP

Primary Examiner:

Thai Ba Trieu

Assistant Examiner:

Jason T Newton

Int. Cl.
CPC ...
F02B 33/44 (2006.01); F02B 29/04 (2006.01); F02B 33/00 (2006.01); F02M 25/07 (2006.01); F02D 17/02 (2006.01); F02D 13/02 (2006.01); F02B 37/00 (2006.01); F02B 37/007 (2006.01); F02B 37/013 (2006.01); F02B 37/22 (2006.01); F02D 13/06 (2006.01); F02D 23/00 (2006.01); F02B 37/24 (2006.01); F02B 37/16 (2006.01);
U.S. Cl.
CPC ...
F02D 13/0203 (2013.01); F02B 37/00 (2013.01); F02B 37/007 (2013.01); F02B 37/013 (2013.01); F02B 37/16 (2013.01); F02B 37/22 (2013.01); F02B 37/24 (2013.01); F02D 13/02 (2013.01); F02D 13/06 (2013.01); F02D 17/02 (2013.01); F02D 23/00 (2013.01); F02M 25/0711 (2013.01); F01N 2900/1612 (2013.01); Y02T 10/144 (2013.01);
Abstract

First and second turbochargers for supercharging a first cylinder group which continues or stops an operation by a valve stopping mechanism for reduced cylinders, and a second cylinder group which stops or continues the operation by the valve stopping mechanism for reduced cylinders, respectively, and a third turbocharger in which air from the first and second turbochargers is supplied to the first and second cylinder groups via separate independent intake passages, to supercharge the first and second turbochargers. If a reduced-cylinder operation system provided with this valve stopping mechanism is provided in addition to the turbo-charging system, a drop in a supercharging amount during a reduced-cylinder operation is prevented, a sufficient air amount is supplied into operating cylinders, deterioration of combustion in the operating cylinders and deterioration of a state of an exhaust gas are prevented, and fuel efficiency is improved.

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