JPS63171644U

JPS63171644U -

Info

Publication number: JPS63171644U
Application number: JP6493787U
Authority: JP
Priority date: 1987-04-28
Filing date: 1987-04-28
Publication date: 1988-11-08

Description

[Brief explanation of drawings]

第１図乃至第６図は本考案の一実施例を示すも
のであつて、第１図はモノブロツクエンジンの断
面図、第２図は第１図におけるＲ―Ｒ矢視断面図
、第３図は第１図におけるＸ―Ｘ矢視断面図、第
４図は第１図におけるＹ―Ｙ矢視断面図、第５図
は第１図におけるＺ―Ｚ矢視断面図、第６図は第
５図におけるＣ矢示部拡大図である。１はモノブロツクエンジン、２は燃焼室、２ａ
は曲面部、３は気筒、４・５は水路、６は連通穴
、７はプラグボス部、８は補強リブ、１０は吸排
気ポート、１１は排気ポート、１２は吸気ポート
、１３はピストンである。 1 to 6 show one embodiment of the present invention, in which FIG. 1 is a sectional view of a monoblock engine, FIG. 2 is a sectional view taken along the line R--R in FIG. 1, and FIG. The figure is a sectional view taken along the X-X arrow in Figure 1, Figure 4 is a sectional view taken along the Y-Y arrow in Figure 1, Figure 5 is a sectional view taken along the Z-Z arrow in Figure 1, and Figure 6 is a sectional view taken along the Z-Z arrow in Figure 1. 6 is an enlarged view of the portion indicated by arrow C in FIG. 5. FIG. 1 is a monoblock engine, 2 is a combustion chamber, 2a
is a curved surface part, 3 is a cylinder, 4 and 5 are water channels, 6 is a communication hole, 7 is a plug boss part, 8 is a reinforcing rib, 10 is an intake and exhaust port, 11 is an exhaust port, 12 is an intake port, and 13 is a piston. .

Claims

[Scope of utility model registration request]

It has a water channel that circulates cooling water in the direction of the cylinder row,
and a plug boss formed above a substantially central portion of the combustion chamber in a monoblock engine in which one combustion chamber has intake and exhaust ports having an intake valve on one side and an exhaust valve on the other side with respect to the cylinder row direction. 1. An engine block structure, characterized in that a reinforcing rib is disposed near the cylinder row to deflect cooling water flowing in the cylinder row direction toward the exhaust valve side.