JPH03108837U

JPH03108837U -

Info

Publication number: JPH03108837U
Application number: JP1711290U
Authority: JP
Priority date: 1990-02-22
Filing date: 1990-02-22
Publication date: 1991-11-08

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すものであり、第
１図はエンジンの縦断正面図であつて第２図の
−線に沿う断面図、第２図は第１図の−線
断面図、第３図はウエツトライナの外面を示すシ
リンダブロツクの縦断面図、第４図は第２図の
矢視部拡大図、第５図は第２図の矢視部拡大図
である。２３……シリンダバレル、２４……中空部、２
４ｄ……受け座、２５……ウエツトライナ、２５
ａ……肩部、４３……第１絶縁材、４４_１，４４
_２，４４_３……第２絶縁材、ＢＣ……シリンダブ
ロツク、Ｅ……エンジンブロツク、ＪＢ……冷媒
ジヤケツト、ＨＣ……シリンダヘツド。 The drawings show one embodiment of the present invention, and FIG. 1 is a vertical front view of the engine, which is a sectional view taken along the line - in FIG. 2; FIG. 3 is a vertical sectional view of the cylinder block showing the outer surface of the wet liner, FIG. 4 is an enlarged view of the portion taken in the direction of the arrows in FIG. 2, and FIG. 5 is an enlarged view of the portion taken in the direction of the arrows in FIG. 23...Cylinder barrel, 24...Hollow part, 2
4d...Socket seat, 25...Wet liner, 25
a... Shoulder part, 43... First insulating material, 44 ₁ , 44
_2,44 ₃ ...Second insulating material, BC...Cylinder block, E...Engine block, JB...Refrigerant jacket, HC...Cylinder head.

Claims

[Scope of utility model registration request]

Cylinder block BC and cylinder block B
The cylinder head HC is coupled to the upper surface of the cylinder block BC, and the hollow part 24 provided in the cylinder barrel 23 of the cylinder block BC has a wet liner 25 forming a refrigerant jacket JB between it and the inner surface of the hollow part 24. Insert the wet liner 2
5, in an engine block of an engine in which a shoulder portion 25a to be received by a receiving seat 24d provided on a cylinder barrel 23 extends outward in the radial direction, at least the cylinder barrel 23 of the cylinder block BC is made of a magnesium alloy. The wet liner 25 is made of a metal material different from magnesium, and the shoulder portion 25a of the wet liner 25 and the cylinder barrel 2
A first insulating material 43 made of a synthetic resin having surface pressure resistance and non-conductivity is provided between the receiving seat 24d of No. 3 and the receiving seat 24d.
The cylinder barrel 23 and the wet liner 25 are made of non-conductive synthetic resin at the portions of the cylinder barrel 23 and the wet liner 25 that are close enough to each other to cause electrolytic corrosion, except for the opposing surfaces of the shoulder portion 25a and the receiving seat 24d. An engine block for an engine, characterized in that second insulating materials 44 ₁ , 44 ₂ , 44 ₃ are interposed therein.