Internal combustion engine

Patent metadata

Field	Value
Publication number	US-10753318-B2
Application number	US-201916366564-A
Country	US
Kind code	B2
Filing date	Mar 27, 2019
Priority date	Apr 26, 2018
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

An internal combustion engine includes a main body including an attachment portion; an EGR cooler including a portion fastened to the main body; and an EGR valve including a fixing portion fastened to the attachment portion with a bolt and a connection portion fastened to the EGR cooler. A pin is fixed to one of the fixing portion and the attachment portion. An insertion hole into which the pin is inserted is arranged in the other one of the fixing portion and the attachment portion. An inner diameter of the insertion hole is greater than an outer diameter of the pin, and a value obtained by subtracting the outer diameter of the pin from the inner diameter of the insertion hole is less than a value obtained by subtracting a shank diameter of the bolt from an inner diameter of a bolt hole in the fixing portion.

First claim

What is claimed is:

1. An internal combustion engine, comprising:
a main body of the internal combustion engine including an attachment portion;
an EGR cooler including a portion fastened to the main body of the internal combustion engine, wherein the EGR cooler is configured to lower a temperature of exhaust gas returned to an intake passage of the internal combustion engine; and
an EGR valve including a fixing portion fastened to the attachment portion with a bolt and a connection portion fastened to the EGR cooler, wherein the EGR valve is configured to adjust a flow rate of the exhaust gas returned to the intake passage, wherein
a pin is fixed to one of the fixing portion and the attachment portion,
an insertion hole into which the pin is inserted is arranged in the other one of the fixing portion and the attachment portion,
an inner diameter of the insertion hole is greater than an outer diameter of the pin, and
a value obtained by subtracting the outer diameter of the pin from the inner diameter of the insertion hole is less than a value obtained by subtracting a shank diameter of the bolt from an inner diameter of a bolt hole in the fixing portion into which the bolt is inserted.

2. The internal combustion engine according to claim 1 , wherein
the pin is a hollow rod, and
the bolt is inserted into the pin.

3. The internal combustion engine according to claim 1 , wherein the insertion hole is arranged at a location separate from the bolt hole as viewed in an axial direction of the bolt hole.

Assignees

• Toyota Motor Co Ltd

Inventors

• Sawaki Atsushi

Classifications

• F02M26/12 Primary

  characterised by means for attaching parts of an EGR system to each other or to engine parts · CPC title

• F02M26/09 Primary

  Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine · CPC title

• F02M26/11

  Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems · CPC title

• Y02T10/40

  Engine management systems · CPC title

• F02M26/29

  Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials · CPC title