Engine device

Patent metadata

Field	Value
Publication number	US-2016281591-A1
Application number	US-201415030764-A
Country	US
Kind code	A1
Filing date	Oct 22, 2014
Priority date	Oct 28, 2013
Publication date	Sep 29, 2016
Grant date	—

Abstract

An engine device in which exhaust pipes and an intake pipe can be mounted highly rigidly by using an upper face corner of a cylinder block in an engine, and a support structure of the exhaust pipes and the intake pipe can be simplified. In an engine device in which a first supercharger and a second supercharger are disposed in series on an exhaust gas discharge path of an engine, the engine device has a structure in which the first supercharger and the second supercharger are disposed to be divided on opposed side faces of the engine, and an upper side exhaust pipe between the engine and the first supercharger, a lower side exhaust pipe between the first supercharger and the second supercharger, and an intake pipe between the first supercharger and the second supercharger extend to be substantially flush with one another at a head-cover disposed-height of an upper face of the engine.

First claim

1 . An engine device in which a first supercharger and a second supercharger are disposed in series on an exhaust gas discharge path of an engine,
wherein the engine device has a structure in which the first supercharger and the second supercharger are disposed to be divided on opposed side faces of the engine, and wherein an upper side exhaust pipe between the engine and the first supercharger, a lower side exhaust pipe between the first supercharger and the second supercharger, and an intake pipe between the first supercharger and the second supercharger extend to be substantially flush with one another at a head-cover-disposed height of an upper face of the engine.

2 . The engine device according to claim 1 , wherein the engine device has a structure in which an exhaust inlet portion of the upper side exhaust pipe is connected to a cylinder head of the engine, and the lower side exhaust pipe is connected to and supported by the upper side exhaust pipe via a connection bracket body.

3 . The engine device according to claim 1 , wherein an upper side pipe and a lower side pipe are provided as the upper side exhaust pipe, and the upper side pipe and the lower side pipe are fixedly set up at substantially the same height.

4 . The engine device according to claim 1 , wherein the engine device has a structure in which the cylinder head is fastened to a cylinder block of the engine by a head fixing bolt, and the intake pipe is attached to the head fixing bolt via an intake pipe support body.

5 . The engine device according to claim 1 ,
wherein the engine device has a structure in which an attachment component, such as an oil cooler of the engine, is disposed at one side of a cylinder block of the engine, and an engine operating tool is disposed at the other side of the cylinder block in the engine, and wherein the upper side exhaust pipe or the lower side exhaust pipe is disposed so as to be closer to an upper face side, of the one side on which the attachment component is disposed, on the upper face side of the engine.

Assignees

• Yanmar Co Ltd

Inventors

• Nakagawa Toshiaki
• Noda Takehiro
• HANADA Yuuya
• Hamaoka Shunji

Classifications

• F01P11/08

  Arrangements of lubricant coolers (in lubrication apparatus F01M) · CPC title

• F02B61/04

  for driving propellers · CPC title

• F02F2007/0063

  Head bolts; Arrangements of cylinder head bolts · CPC title

• F02F7/006

  Camshaft or pushrod housings · CPC title

• F02B37/013 Primary

  with exhaust-driven pumps arranged in series · CPC title