Engine device

Patent metadata

Field	Value
Publication number	US-2020080452-A1
Application number	US-201716496896-A
Country	US
Kind code	A1
Filing date	Dec 19, 2017
Priority date	Mar 24, 2017
Publication date	Mar 12, 2020
Grant date	—

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

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 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 . (canceled)

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 in 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.

5 . 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.

Assignees

• Yanmar 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

• F02M35/104

  Intake manifolds · CPC title

• F02M35/10222

  Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission · CPC title