JPH0465913U

JPH0465913U -

Info

Publication number: JPH0465913U
Application number: JP10624390U
Authority: JP
Priority date: 1990-10-09
Filing date: 1990-10-09
Publication date: 1992-06-09

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例を示し、第１
図はシリンダ及びクランクケースのオイル緩衝室
周辺の背面図、第２図は第１図のＡ−Ａ線断面図
、第３図はオイル戻し装置の概略斜視図、第４図
は頭上弁縦型デイーゼルエンジンの要部縦断面図
、第５図は従来技術を示す第２図相当図である。Ｅ……縦型エンジン、１……クランク室、２…
…１の後端縁、３……裏蓋、４……ブリーザ装置
、５……４のオイル戻し路、６……オイル緩衝室
、７……タペツト室、８……７と１の間の肉壁、
１０……６の後部、１１……６のオイル入口、１
２……６のオイル出口、１３……クランク軸、１
４……６のオイル流入空洞部、１４ａ……１４の
前部、１４ｂ……１４の後部、１５……６のオイ
ル流出部、１６……オイル連絡口、１７……遮蔽
壁、１７ａ……１７の後端縁、１８……１７の左
右の一方の側、１９……１７の左右の他方の側、
２０……１７の下側、Ｐ……１３に沿う前後方向
。 1 to 4 show embodiments of the present invention.
The figure is a rear view of the cylinder and crankcase around the oil buffer chamber, Figure 2 is a sectional view taken along line A-A in Figure 1, Figure 3 is a schematic perspective view of the oil return device, and Figure 4 is a vertical type overhead valve. FIG. 5, which is a vertical cross-sectional view of a main part of a diesel engine, is a diagram corresponding to FIG. 2 showing the prior art. E... Vertical engine, 1... Crank chamber, 2...
...Rear edge of 1, 3... Back cover, 4... Breather device, 5... Oil return path of 4, 6... Oil buffer chamber, 7... Tappet chamber, 8... Between 7 and 1. flesh wall,
10...6 rear, 11...6 oil inlet, 1
2...6 oil outlet, 13...crankshaft, 1
4...6 oil inlet cavity, 14a...14 front part, 14b...14 rear part, 15...6 oil outlet part, 16...oil connection port, 17...shielding wall, 17a... The rear edge of 17, 18...one left and right side of 17, 19...the other left and right side of 17,
20...The lower side of 17, the front and back direction along P...13.

Claims

[Claims for Utility Model Registration] A breather device 4 is provided in a vertical engine E having a back cover 3 attached to the rear end edge 2 of a crank chamber 1, and an oil return path 5 of the breather device 4 is connected to an oil return path 5 through an oil buffer chamber 6. The oil buffer chamber 6 communicates with the crank chamber 1 and is formed in the upper wall 8 of the crank chamber 1 below the tappet chamber 7 of the engine E, and opens with the rear part 10 of the oil buffer chamber 6 facing the back cover 3. and oil buffer chamber 6
The vertical type is configured such that the oil inlet 11 and oil outlet 12 of the oil return passage 5 are opened at positions that do not overlap vertically, and the oil in the oil return passage 5 is returned to the crank chamber 1 via the inlet 11 and outlet 12 of the oil buffer chamber 6. In the oil return device for engine blow-by gas, the oil buffer chamber 6 is composed of an oil inlet cavity 14 and an oil outlet 15. The oil inlet cavity 14 is formed deeply in the front-rear direction P along the crankshaft 13, and the oil Inflow cavity 14
The oil inlet 11 is opened in the front part 14a of the crank chamber 14 toward the upper tappet chamber 7, and the oil communication port 16 in the rear part 14b of the oil inlet cavity 14 is formed by exiting forward from the rear end edge 2 of the crank chamber 1. The oil outflow section 15 is constructed by separating the front and lower parts from the crank chamber 1 with a shielding wall 17 below the oil inflow cavity 14, and the shielding wall 17 is oriented back and forth, and the rear end edge of the shielding wall 17 17a protrudes flush with the rear end edge 2 of the crank chamber 1, and when viewed from the front from the back cover 3 side, the shielding wall 17, which has a step-down shape, connects the left and right sides 18 and the bottom. side 20
The oil outlet 12 is opened on the other left and right side 19 of the shielding wall 17, and the oil flowing into the oil inlet 11 is passed through the oil communication port 16 of the oil inlet cavity 14 and the oil outlet 12 is opened on the other left and right sides 19 of the shielding wall 17. An oil return device for blow-by gas for a vertical engine, characterized in that it is configured to guide blow-by gas to an oil outlet 12 through a shielding wall 17 of a portion 15.