JPH02141624U

JPH02141624U -

Info

Publication number: JPH02141624U
Application number: JP5111889U
Authority: JP
Priority date: 1989-04-28
Filing date: 1989-04-28
Publication date: 1990-11-29

Description

[Brief explanation of the drawing]

第１，２図は本考案の第１実施例としてのエン
ジン用分離冷却装置を示すもので、第１図ａはそ
の装置を装備したエンジンのシリンダブロツクの
平面図、第１図ｂはその装置を装備したエンジン
の側面及び本装置の構成を示す図、第２図はその
エンジンの縦断面図であり、第３図は本考案の第
２実施例としてのエンジン用分離冷却装置を装備
したエンジンのシリンダブロツクの平面図であり
、第４，５図は従来のエンジン用冷却装置を示す
もので、第４図はこの装置を装備したエンジンの
縦断面図、第５図はそのエンジンの側面図であり
、第６，７図は本考案の案出過程で提案されたエ
ンジン用冷却装置を示すもので、第６図はこの装
置を装備したエンジンの縦断面図、第７図はその
エンジンの側面図である。１……エンジン、２……シリンダブロツク、２
ａ……シリンダブロツク２のスカート部、３……
シリンダヘツド、３……燃焼室、４……オイルパ
ン、５……吸気管、６……排気管、７……吸気通
路、８……排気通路、９……吸気バルブ、１０…
…排気バルブ、１２……ピストン、１３……シリ
ンダライナ、１５……ラジエータ、１６……ウオ
ータポンプ、１７……冷却水供給管、１８……冷
却水排出管、１９……冷却水、２０……ガスケツ
ト、３０……ウオータジヤケツト、３１……エン
ジン用分離冷却装置、３２……自然対流部、３３
ａ〜３３ｈ……連通孔、３４……強制対流部、４
１……連通孔。 1 and 2 show a separate cooling device for an engine as a first embodiment of the present invention, FIG. 1a is a plan view of the cylinder block of an engine equipped with the device, and FIG. FIG. 2 is a longitudinal sectional view of the engine, and FIG. 3 is a side view of the engine equipped with the engine and the configuration of this device, and FIG. 3 is the engine equipped with the engine separation cooling device as a second embodiment of the present invention Figures 4 and 5 show a conventional engine cooling system, Figure 4 is a longitudinal sectional view of an engine equipped with this system, and Figure 5 is a side view of the engine. Figures 6 and 7 show the engine cooling device proposed in the process of devising the present invention. Figure 6 is a longitudinal sectional view of an engine equipped with this device, and Figure 7 is a diagram of the engine. FIG. 1...Engine, 2...Cylinder block, 2
a...Skirt portion of cylinder block 2, 3...
Cylinder head, 3... Combustion chamber, 4... Oil pan, 5... Intake pipe, 6... Exhaust pipe, 7... Intake passage, 8... Exhaust passage, 9... Intake valve, 10...
...Exhaust valve, 12...Piston, 13...Cylinder liner, 15...Radiator, 16...Water pump, 17...Cooling water supply pipe, 18...Cooling water discharge pipe, 19...Cooling water, 20... ... Gasket, 30 ... Water jacket, 31 ... Engine separation cooling device, 32 ... Natural convection section, 33
a~33h...Communication hole, 34...Forced convection part, 4
1...Communication hole.

Claims

[Scope of utility model registration request]

A water jacket provided around the outside of each cylinder liner of an engine having a plurality of cylinders, a water pump capable of forcing cooling water in the water jacket to undergo forced convection, and a radiator for cooling the cooling water. In the engine cooling system, the water jacket is located above the communication hole through the communication hole provided on the outer upper part of each cylinder liner, and the water pump drives the internal cooling water. The forced convection section is separated into a forced convection section where forced convection occurs through the communication hole, and the natural convection section which is located below the communication hole and allows internal cooling water to naturally convect without being driven by the water pump. The cooling water flow area between the forced convection section and the natural convection section around the liner is set to increase as it goes downstream of the forced convection cooling water flow, Separate cooling device for engines.