Engine device

Patent metadata

Field	Value
Publication number	US-10837334-B2
Application number	US-201716496896-A
Country	US
Kind code	B2
Filing date	Dec 19, 2017
Priority date	Mar 24, 2017
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

An engine device including an exhaust gas purification device above a cylinder head through a support pedestal. The support pedestal has a flat portion on which the exhaust gas purification device is mounted, and a plurality of legs which protrude downward from the flat portion and are fixed to the cylinder head. The flat portion and the leg portions are formed integrally. Portions between the legs are each formed in an arch-shape.

First claim

The invention claimed is:

1. An engine device, comprising an exhaust gas purification device provided above a cylinder head through a support pedestal, wherein:
the support pedestal has a flat portion on which the exhaust gas purification device is mounted, and a plurality of legs which protrude downward from the flat portion and are fixed to the cylinder head;
the flat portion and the legs are formed integrally, and a portion between the legs adjacent to each other is formed in an arch-shape;
the support pedestal is arranged above a first side surface of the cylinder head and a cooling fan is arranged on a second side surface of the cylinder head, each of the first side surface and the second side surface being out of two side surfaces of the cylinder head intersecting an exhaust side surface and an air-intake side surface of the cylinder head facing each other; and
a cooling air passage in which cooling air from the cooling fan flows is formed between a cylinder head cover on the cylinder head and the support pedestal.

2. The engine device according to claim 1 , wherein:
an exhaust manifold is provided on the exhaust side surface and an air-intake manifold is provided on the air-intake side surface; and
the support pedestal includes as the legs: an exhaust side leg fixed to the exhaust side surface, an air-intake side leg fixed to the air-intake side surface, and a center leg fixed to the first side surface.

3. The engine device according to claim 2 , wherein:
the air-intake manifold is formed integrally with the air-intake side surface of the cylinder head; and
the air-intake side leg is fixed to an upper surface of the air-intake manifold.

4. The engine device according to claim 1 , further comprising:
an EGR device configured to return a part of exhaust gas discharged from the exhaust manifold to the air-intake manifold as an EGR gas; an EGR cooler configured to cool the EGR gas; and an exhaust pressure sensor configured to detect an exhaust gas pressure in the exhaust manifold, wherein
the EGR cooler and the exhaust pressure sensor are attached to the first side surface of the cylinder head.

Assignees

• Yanmar Co Ltd
• Yanmar Power Technology Co Ltd

Inventors

• Matsui Yu
• Furukawa Naotoshi

Classifications

• F02M26/15

  in relation to engine exhaust purifying apparatus · CPC title

• F02P5/02

  non-automatically; dependent on position of personal controls of engine, e.g. throttle position · CPC title

• F01N13/18 Primary

  Construction facilitating manufacture, assembly, or disassembly · CPC title

• F02F1/243

  Cylinder heads and inlet or exhaust manifolds integrally cast together · CPC title

• F01N3/0211 Primary

  Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration · CPC title