JPS6379430U

JPS6379430U -

Info

Publication number: JPS6379430U
Application number: JP17434686U
Authority: JP
Priority date: 1986-11-12
Filing date: 1986-11-12
Publication date: 1988-05-25

Description

[Brief explanation of drawings]

第１〜４図は本考案の第１実施例としてのエン
ジン冷却装置を示すもので、第１図はその部分水
平断面図、第２図はその縦断面図、第３図は第２
図とは異なつた部分での縦断面図、第４図はその
３分割冷却系の説明図であり、第５〜７図は本考
案の第２実施例としてのエンジン冷却装置を示す
もので、第５図はその部分水平断面図、第６図は
その縦断面図、第７図は第６図とは異なつた部分
での縦断面図である。１……シリンダブロツク、２……シリンダヘツ
ド、３……シリンダヘツドアツパ、４……シリン
ダヘツドカバー、５……クランクカバー、６……
オイルパン、６Ａ……油溜め部、７……クランク
軸、８……クランク軸受、８ａ……クランク軸受
のアツパ部、８ｂ……クランク軸受のロア部、９
……ボルト、１０……通しボルト、１１……オイ
ルポンプ、１２……ピストン、１３……ライナ部
、１３ａ……フランジ部、１３ｂ……突条、１４
……カバー、１５……オイルジヤケツト、１５Ａ
……油流入側オイルジヤケツト部分、１５Ｂ……
油流出側オイルジヤケツト部分、１７……オイル
ギヤラリ、１８……高圧油路、１９……オイルク
リーナ、２０……高圧油パイプ、２２……チエツ
クバルブ、２３……リターン路、２４……オーバ
ーフロー孔、２５……クランク室、２６，２６′
……オイル戻し用オイルギヤラリ、２６Ａ，２６
′Ａ，２６Ｂ……主油戻り口、２６Ｃ，２６′Ｃ
……油戻り口、２７……弯曲板、２８……エンジ
ン燃焼室、２９……ウオータジヤケツト、２９ａ
，２９ｂ……環状溝、３０……ウオータギヤラリ
、３０ａ，３０ｂ……環状溝、３１……吸気ポー
ト、３２……吸気マニホールド、３３……排気ポ
ート、３４……排気マニホールド、３５……吸気
弁、３６……排気弁、３７……連通孔、３８……
吸気カム軸、３９……排気カム軸、４０……吸気
弁ばね、４１……排気弁ばね、４２……カム軸室
、４３……下部油循環系、４４……冷却水循環系
、４５……上部油循環系、１０２……筒状ガイド
柱。 1 to 4 show an engine cooling system as a first embodiment of the present invention, in which FIG. 1 is a partial horizontal sectional view, FIG. 2 is a vertical sectional view, and FIG. 3 is a partial horizontal sectional view.
A vertical cross-sectional view of a portion different from the figure, FIG. 4 is an explanatory diagram of the three-part cooling system, and FIGS. 5 to 7 show an engine cooling system as a second embodiment of the present invention. FIG. 5 is a partial horizontal sectional view thereof, FIG. 6 is a vertical sectional view thereof, and FIG. 7 is a vertical sectional view of a different portion from FIG. 6. 1... Cylinder block, 2... Cylinder head, 3... Cylinder head upper, 4... Cylinder head cover, 5... Crank cover, 6...
Oil pan, 6A...Oil reservoir, 7...Crankshaft, 8...Crank bearing, 8a...Top part of crank bearing, 8b...Lower part of crank bearing, 9
... Bolt, 10 ... Through bolt, 11 ... Oil pump, 12 ... Piston, 13 ... Liner part, 13a ... Flange part, 13b ... Projection, 14
...Cover, 15...Oil jacket, 15A
...Oil inflow side oil jacket part, 15B...
Oil outlet side oil jacket part, 17...Oil gear gallery, 18...High pressure oil path, 19...Oil cleaner, 20...High pressure oil pipe, 22...Check valve, 23...Return path, 24...Overflow hole , 25... crank chamber, 26, 26'
...Oil gear rally for oil return, 26A, 26
'A, 26B...Main oil return port, 26C, 26'C
...Oil return port, 27...Curved plate, 28...Engine combustion chamber, 29...Water jacket, 29a
, 29b... Annular groove, 30... Water gear rally, 30a, 30b... Annular groove, 31... Intake port, 32... Intake manifold, 33... Exhaust port, 34... Exhaust manifold, 35... Intake valve, 36...Exhaust valve, 37...Communication hole, 38...
Intake camshaft, 39...Exhaust camshaft, 40...Intake valve spring, 41...Exhaust valve spring, 42...Camshaft chamber, 43...Lower oil circulation system, 44...Cooling water circulation system, 45... Upper oil circulation system, 102... cylindrical guide column.

Claims

[Scope of utility model registration request]

Cooling of the engine combustion chamber formed by the cylinder head, the cylinder block superimposed on the cylinder head, and the piston sliding inside the engine cylinder of the cylinder block is separated between the cylinder head side and the cylinder block side. In order to achieve this, an upper oil circulation system that lubricates the cylinder head side and a lower oil circulation system that lubricates the cylinder block side are provided separately, and the lower oil circulation system is formed around the engine cylinder. An oil jacket that holds cooling oil, an oil gear that receives oil spilled from the oil jacket, and an oil gear that partially covers the bottom of the crank cover that is provided at the bottom of the cylinder block below the oil gear. an oil pan oil sump for receiving return oil from the oil pan, and an upper part of the oil pan oil sump in the oil gear gallery is formed wider than other parts, and an oil return port is formed in this wide part. An engine cooling system characterized by: