Engine cooler

Patent metadata

Field	Value
Publication number	US-9828933-B2
Application number	US-201514633317-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Mar 19, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

An engine cooler capable of suppressing a piston slap sound is provided. The engine cooler includes a cylinder block including a cylinder barrel and a water jacket, and a spacer stored in the water jacket, the water jacket surrounds the cylinder barrel, and the spacer encloses the cylinder barrel. Given that a width direction of the cylinder block is a lateral direction, a pressed member is pressed between the cylinder barrel and the spacer on lateral sides of the cylinder barrel, and a lower end of the pressed member is disposed above a lower end of each of right and left skirts of a piston located at a top dead center.

First claim

What is claimed is:

1. An engine cooler comprising:
a cylinder block having a cylinder barrel and a water jacket with an inner bottom, and a spacer having an upper end and a lower end and being stored in the water jacket, the lower end of the spacer being engaged with the inner bottom of the water jacket,
the water jacket surrounding the cylinder barrel, and the spacer enclosing the cylinder barrel, wherein
the engine cooler further comprising a pressed member having an upper end, a top surface on the upper end, a lower end, a bottom surface on the lower end, and a pressed-member height extending from the top surface to the bottom surface, wherein the top surface is free from contact with any other body, and
given that a width direction of the cylinder block is a lateral direction, the pressed member is stored in said water jacket and pressed between the cylinder barrel and the upper end of the spacer, with the upper end of the pressed member disposed no higher than the upper end of the spacer, on lateral sides on the cylinder barrel, the pressed-member height being less than a water-jacket width measured in the width direction of the cylinder block, and
a lower end of the pressed member is disposed above a lower end of each of right and left skirts of a piston located at a top dead center.

2. The engine cooler according to claim 1 , wherein
the lower end of the pressed member is disposed above a piston maximum-diameter section of each of the right and left skirts of the piston located at the top dead center.

3. The engine cooler according to claim 1 , wherein
a front end of the pressed member is disposed in front of a front end of each of the right and left skirts of the piston fitted in the cylinder barrel pressing the pressed member, and a rear end of the pressed member is disposed in the rear of a rear end of the skirt.

4. The engine cooler according to claim 1 , wherein
an upper end of the pressed member is disposed below a lower end of a pressure ring of the piston located at the top dead center.

5. The engine cooler according to claim 4 , wherein
the upper end of the pressed member is disposed below a lower end of an oil ring of the piston located at the top dead center.

6. The engine cooler according to claim 1 , wherein
the pressed member is made of an elastomeric resin or rubber.

7. The engine cooler according to claim 1 , wherein
the pressed member is attached to the spacer.

8. The engine cooler according to claim 1 , wherein
the spacer is made of a resin, rubber, or a material including a base material and a rubber layer formed on the surface of the base material.

9. The engine cooler according to claim 1 , wherein
the spacer is made of a material having a heat insulating layer.

10. The engine cooler according to claim 2 , wherein
a front end of the pressed member is disposed in front of a front end of each of the right and left skirts of the piston fitted in the cylinder barrel pressing the pressed member, and a rear end of the pressed member is disposed in the rear of a rear end of the skirt.

11. The engine cooler according to claim 2 , wherein
an upper end of the pressed member is disposed below a lower end of a pressure ring of the piston located at the top dead center.

12. The engine cooler according to claim 3 , wherein
an upper end of the pressed member is disposed below a lower end of a pressure ring of the piston located at the top dead center.

13. The engine cooler according to claim 10 , wherein
an upper end of the pressed member is disposed below a lower end of a pressure ring of the piston located at the top dead center.

14. The engine cooler according to claim 11 , wherein
the upper end of the pressed member is disposed below a lower end of an oil ring of the piston located at the top dead center.

15. The engine cooler according to claim 12 , wherein
the upper end of the pressed member is disposed below a lower end of an oil ring of the piston located at the top dead center.

16. The engine cooler according to claim 13 , wherein
the upper end of the pressed member is disposed below a lower end of an oil ring of the piston located at the top dead center.

17. The engine cooler according to claim 2 , wherein
the pressed member is made of an elastomeric resin or rubber.

18. The engine cooler according to claim 4 , wherein
the pressed member is made of an elastomeric resin or rubber.

19. The engine cooler according to claim 10 , wherein
the pressed member is made of an elastomeric resin or rubber.

20. The engine cooler according to claim 11 , wherein
the pressed member is made of an elastomeric resin or rubber.

Assignees

• Kubota Kk

Inventors

• Nagai Kentaro
• Koyama Hideyuki
• Goto Hideyuki
• Yamazaki Takahiro
• Kuwasaki Hiroshi

Classifications

• F02F2001/106

  using a closed deck, i.e. the water jacket is not open at the block top face · CPC title

• F01P2003/021

  Cooling cylinders · CPC title

• F02F1/16 Primary

  Cylinder liners of wet type · CPC title

• F02F1/14 Primary

  Cylinders with means for directing, guiding or distributing liquid stream · CPC title

• F01P3/02

  Arrangements for cooling cylinders or cylinder heads · CPC title