JPH0166414U

JPH0166414U -

Info

Publication number: JPH0166414U
Application number: JP1987161248U
Authority: JP
Priority date: 1987-10-21
Filing date: 1987-10-21
Publication date: 1989-04-27

Description

[Brief explanation of the drawing]

図面は本考案エンジンの一実施例を示すもので
、第１図はエンジンの要部を縦断した側面図（第
２図の―線断面図）、第２図は第１図の―
線断面図、第３図は第２図の―線断面図、
第４図は第１図の―線断面図である。１…エンジン、４…シリンダブロツク、５…ア
ツパケース、７…クランク室、８…ロアケース、
１０…クランクケース、１２…オイルパン、２１
…吸気系、２３，２４…ジヤーナル支持壁、４５
…ブリーザ室、４６…入口孔、４８，４９…第１
、第２出口管、５１，５２…凹部。 The drawings show an embodiment of the engine of the present invention, and FIG. 1 is a longitudinal side view of the main parts of the engine (a sectional view taken along the line - in FIG. 2), and FIG. 2 is a cross-sectional view taken along the line - in FIG.
Line sectional view, Figure 3 is a - line sectional view of Figure 2,
FIG. 4 is a sectional view taken along the line -- in FIG. 1. 1...Engine, 4...Cylinder block, 5...Upper case, 7...Crank chamber, 8...Lower case,
10...Crankcase, 12...Oil pan, 21
...Intake system, 23, 24...Journal support wall, 45
...breather chamber, 46...inlet hole, 48, 49...first
, second outlet pipe, 51, 52... recess.

Claims

[Scope of utility model registration request]

In an engine in which an oil pan is attached to the open lower surface of a crankcase that is connected to the lower end of a cylinder block, there is a top case that is integrally molded with the cylinder block, and a lower case that is bonded to the top case and defines a crank chamber therebetween. In addition, a plurality of journal support walls for rotatably holding the crankshaft are protruding from each inner wall of the upper case and the lower case, and a plurality of journal support walls are provided on one side of the crankcase on the opposing surfaces of the upper case and the lower case. An engine characterized in that a breather chamber is provided with a recess formed therein, and one end of the breather chamber communicates with a crank chamber, and the other end communicates with an intake system.