IP Library Granted Patent US 11,649,784
Granted Patent B2
US 11,649,784 · App. 17/740,937 · Granted May 16, 2023

Cylinder head and engine

Inventors: Tomoaki Kitagawa (Osaka, JP); Masahiro Akei (Osaka, JP)
Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
F02F1/42F01P3/02F01P5/10F01P7/161F01P2003/024F01P2007/146F02M26/41
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Quick Facts
Patent No.
US 11,649,784
App. No.
17/740,937
Granted
May 16, 2023
Kind
B2
Abstract

A cylinder head includes: an exhaust port configured to lead out exhaust gas from combustion chamber; an intake port configured to introduce fresh air into the combustion chamber; and an EGR gas passage in which EGR gas flows, wherein exhaust outlets of the exhaust port and an EGR gas inlet of the second EGR pipe are located on a first side of the cylinder head and, and a fresh air inlet communicated to the intake port and an EGR gas outlet of the EGR gas passage are located on a second side which is opposite from the first side.

Claims (12)

1. A cylinder head of an engine, comprising:

an exhaust port configured to lead out exhaust gas from combustion chamber;

an intake port configured to introduce fresh air into the combustion chamber; and

an EGR gas passage in which EGR gas flows,

wherein exhaust outlets of the exhaust port and an EGR gas inlet of the EGR gas passage are located on a first side of the cylinder head and,

a fresh air inlet communicated to the intake port and an EGR gas outlet of the EGR gas passage are located on a second side which is opposite from the first side.

2. The cylinder head of an engine according to claim 1 ,

wherein the exhaust outlets of the exhaust port and the EGR gas inlet of the EGR gas passage are located on a first side surface of the cylinder head where the first side is located and,

the fresh air inlet and the EGR gas outlet of the EGR gas passage are located on a second side surface of the cylinder head where the second side is located.

3. The cylinder head of an engine according to claim 1 , further comprising:

a cooling water passage provided inside the cylinder head,

a cooling water outlet defined as an opening and formed at an upper side-of the cylinder head.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2022
From: KITAGAWA, TOMOAKI; AKEI, MASAHIRO
To: YANMAR CO., LTD.
Reel/Frame 059926/0605 →
CHANGE OF NAME Recorded May 10, 2022
From: YANMAR CO., LTD.
To: YANMAR POWER TECHNOLOGY CO., LTD.
Reel/Frame 059926/0619 →
Priority Claims (1)
JP JP2017-240549 · Dec 15, 2017 · national
Continuity (3)
Continuation 17346416 · Jun 14, 2021
Continuation 16762559
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