JPH0250122U

JPH0250122U -

Info

Publication number: JPH0250122U
Application number: JP12828388U
Authority: JP
Priority date: 1988-09-30
Filing date: 1988-09-30
Publication date: 1990-04-09

Description

[Brief explanation of the drawing]

第１図乃至第３図はこの考案の一実施例を示す
もので、第１図は要部の概略構成を示す縦断面図
、第２図はシリンダブロツクを示す平面図、第３
図は冷却水流塞き止め部の開口部を示す要部の斜
視図、第４図および第５図は別の実施例を示すも
ので、第４図はシリンダブロツクの要部を示す平
面図、第５図は冷却水流塞き止め部を示す要部の
斜視図、第６図はエンジン本体内の冷却水の流れ
を示す概略構成図、第７図は従来例を示すエンジ
ン本体の要部の縦断面図である。１……エンジン本体、２……冷却水の供給口、
４……冷却水の導出口、５……シリンダブロツク
、６……シリンダ、７……第１のウオータジヤケ
ツト（第１の冷却水通路）、９……シリンダヘツ
ド、１０……燃焼室、１１……第２のウオータジ
ヤケツト（第２の冷却水通路）、１２……連結孔
、２１……冷却水流塞き止め部。 Figures 1 to 3 show an embodiment of this invention, in which Figure 1 is a vertical sectional view showing a schematic configuration of the main parts, Figure 2 is a plan view showing the cylinder block, and Figure 3 is a plan view showing the cylinder block.
The figure is a perspective view of the main part showing the opening of the cooling water flow blocking part, FIGS. 4 and 5 show another embodiment, and FIG. 4 is a plan view showing the main part of the cylinder block. Fig. 5 is a perspective view of the main part showing the cooling water flow blocking part, Fig. 6 is a schematic configuration diagram showing the flow of cooling water in the engine main body, and Fig. 7 is the main part of the engine main body showing a conventional example. FIG. 1...Engine body, 2...Cooling water supply port,
4... Cooling water outlet, 5... Cylinder block, 6... Cylinder, 7... First water jacket (first cooling water passage), 9... Cylinder head, 10... Combustion chamber, DESCRIPTION OF SYMBOLS 11...Second water jacket (second cooling water passage), 12...Connection hole, 21...Cooling water flow blocking part.

Claims

[Scope of utility model registration request]

A first cooling water passage formed in the cylinder block and a second cooling water passage formed in the cylinder head at the joint between the cylinder block of the engine body and the cylinder head disposed on the cylinder block. Connection holes connecting the water passages are formed around each cylinder in the cylinder block, and connect the cooling water supply port disposed at one end of the engine body to the first cooling water passage in the cylinder block body. The cooling water introduced into the cooling water passage is introduced into the second cooling water passage from the first cooling water passage through each of the connecting holes, and the cooling water is introduced into the second cooling water passage. In an engine structure in which the cooling water is led out from a cooling water outlet disposed on the other end side of the engine body, a passage close to the cooling water supply port side in the first cooling water passage in the cylinder block. This first one on the wall
The flow of cooling water toward the other end of the engine body along the inside of the cooling water passage is throttled, and the flow of cooling water from among the connection holes closest to the cooling water supply port side to the inside of the second cooling water passage is An engine structure characterized by being provided with a cooling water flow blocking part that promotes the introduction of cooling water into the engine.