Engine having cylinder block

Patent metadata

Field	Value
Publication number	US-2015144090-A1
Application number	US-201414542578-A
Country	US
Kind code	A1
Filing date	Nov 15, 2014
Priority date	Nov 27, 2013
Publication date	May 28, 2015
Grant date	—

Abstract

Disclosed are an engine having a cylinder block and a method for manufacturing an engine having a cylinder block. The engine may include cylinder liners each having a cylinder space formed therein, a protruded portion formed on an outside circumference thereof, and a flat surface formed on one side of the protruded portion. The cylinder liners may be arranged such that the flat surfaces of adjacent cylinder liners are in close contact with one another. The engine may also include a liner covering unit formed to surround an outside of the cylinder liners, and an outer block which forms a cooling water chamber with an outside surface of the liner covering unit.

First claim

What is claimed is:

1 . An engine having a cylinder block, comprising:
cylinder liners each having a cylinder space formed therein, a protruded portion formed on an outside circumference thereof, and a flat surface formed on one side of the protruded portion, wherein the cylinder liners are arranged such that the flat surfaces of adjacent cylinder liners are in close contact with one another; a liner covering unit formed to surround an outside of the cylinder liners; and an outer block which forms a cooling water chamber with an outside surface of the liner covering unit.

2 . The engine of claim 1 , wherein the protruded portion is formed at an upper side of each of the cylinder liners along a circumference, and the flat surface is formed at a portion where the adjacent cylinder liners are in close contact with one another.

3 . The engine of claim 1 , wherein the flat surface formed at the protruded portion of one or each of the cylinder liners has a groove formed therein.

4 . The engine of claim 3 , wherein the grooves of the adjacent cylinder liners are substantially symmetrical with respect to a close contact surface defined by the flat surfaces of the adjacent cylinder liners in close contact with one another.

5 . The engine of claim 3 , wherein the groove is formed in a diameter direction of the corresponding cylinder liner substantially perpendicular to a first direction in which the cylinder liners are arranged, and has a cross section larger than a semi-circle but smaller than a circle.

6 . The engine of claim 3 , wherein molten metal for forming the liner covering unit is filled in the groove.

7 . The engine of claim 3 , wherein the liner covering unit is formed of a material that is substantially the same as a material of the outer block.

8 . The engine of claim 3 , wherein the liner covering unit and the outer block are formed as one unit by casting.

9 . A method for manufacturing an engine having a cylinder block, the method comprising the steps of:
manufacturing a plurality of cylinder liners, each having a protruded portion formed on an outside thereof; forming a flat surface at the protruded portion; forming a groove in the flat surface; arranging adjacent cylinder liners such that the flat surfaces are in close contact and the grooves face one another; and casting molten metal to form a liner covering unit which surrounds an outside of the cylinder liners and an outer block which forms a cooling water chamber around the liner covering unit.

10 . The method of claim 9 , wherein the protruded portion is formed along a circumference at an end portion of the corresponding cylinder liner.

11 . The method of claim 9 , wherein the groove is formed in a diameter direction of the corresponding cylinder liner substantially perpendicular to a first direction in which the cylinder liners are arranged, and has a cross section larger than a semi-circle but smaller than a circle.

12 . The method of claim 9 , wherein molten metal for forming the liner covering unit is filled in and secured to the groove.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Shin Bosung
• Ju Yeon Ho
• Kim Kihyuk
• Kim Kwang Min
• Kim Hosung
• Cho Jin Woo

Classifications

• F02F1/10

  for liquid cooling · CPC title

• F02F11/005

  involving cylinder liners · CPC title

• B22D19/00

  Casting in, on, or around objects which form part of the product (B22D23/04 takes precedence; alumino-thermic welding B23K23/00; coating by casting molten material on the substrate C23C6/00) · CPC title

• F02F1/004 Primary

  Cylinder liners (F02F1/08, F02F1/16 take precedence) · CPC title

• B22D19/0081

  pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal · CPC title