JPS6030311U

JPS6030311U - 4-cycle engine breather device

Info

Publication number: JPS6030311U
Application number: JP12174983U
Authority: JP
Inventors: 丹波　晨一; 三田寺　隆
Original assignee: 川崎重工業株式会社
Priority date: 1983-08-03
Filing date: 1983-08-03
Publication date: 1985-03-01
Also published as: JPH0124324Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の４サイクルエンジンの概略側面図、第２
図は第１図の■−■線拡線断大断面図３図はこの考案の
一実施例にかかる４サイクルエンジンのブリーザ装置の
縦断正面図、第４図は第３図のＩＶ−ＩＶ線断面図、第
５図はこの考案にかかるチェックバルブの他の実施例を
示す断面図、第６図はこの考案にかかる油戻孔の変形例
を示す断面図である。３・・・クランクシャフト、７・・・タペット室、８・
・・第１油気分離室、９・・・クランク室、１０・・・
第１通気孔、１１・・・第１油戻孔、１２・・・第２油
気分離室、１４・・・チェックバルブ、１５・・・第２
通気孔、１６・・・第２油戻孔、１７・・・第３通気孔
、３７・・・軸受面。第２図第４図Figure 1 is a schematic side view of a conventional four-stroke engine;
The figure is an enlarged sectional view taken along the line ■-■ in Figure 1. Figure 3 is a longitudinal sectional front view of a breather device for a four-cycle engine according to an embodiment of this invention. Figure 4 is a cross-sectional view taken along the line IV-IV in Figure 3. 5 is a sectional view showing another embodiment of the check valve according to this invention, and FIG. 6 is a sectional view showing a modification of the oil return hole according to this invention. 3... Crankshaft, 7... Tappet chamber, 8...
...First oil/gas separation chamber, 9...Crank chamber, 10...
1st ventilation hole, 11... 1st oil return hole, 12... 2nd oil/gas separation chamber, 14... check valve, 15... 2nd
Vent hole, 16... Second oil return hole, 17... Third vent hole, 37... Bearing surface. Figure 2 Figure 4

Claims

[Scope of utility model registration request]

(1) From the first oil and gas separation chamber consisting of a tappet chamber, the second oil and gas separation chamber located at the top of the first oil and gas separation chamber in the case of a vertical shaft engine, and the bottom of the first oil and gas separation chamber. A first oil return hole to the crank chamber, a second oil return hole from the bottom of the second oil/gas separation chamber to the crank chamber, and a first oil/gas separation hole located above the first oil return hole. The first room that connected the rooms
A vent hole, a second vent hole that communicates the top surface of the first oil/gas separation chamber and the bottom surface of the second oil/gas separation chamber, and a 4, characterized in that it is equipped with a check valve that allows ventilation only to the second oil/gas separation chamber, and a third ventilation hole located above the second oil return hole and provided in the second oil/gas separation chamber. Cycle engine breather device.

(2) A breather device for a four-cycle engine according to claim 1, wherein the second oil return hole is guided from the second oil/gas separation chamber to the crank chamber through the bearing surface of the camshaft or crankshaft.