JPS6243128U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１〜３図は本考案の一実施例としての内燃機
関の冷却装置を示すもので、第１図はその概略構
成を示す模式図、第２図はその冷却水温と機関負
荷との関係を示すグラフであり、第３図は本装置
の変形例についての冷却水温と機関負荷との関係
を示すグラフであり、第４，５図は従来の内燃機
関の冷却装置を示すもので、第４図はその概略構
成を示す模式図、第５図はその冷却水温と機関負
荷との関係を示すグラフである。 １……シリンダライナ胴部、２……シリンダラ
イナ肩部、３……シリンダカバー、４……排気弁
座、５……排気弁箱、６，７……主管、８，９…
…枝管、１０，１１……連絡管、１２，１３……
切換弁、１４，１５……切換弁操作信号ライン、
２１……清水ポンプ、２２……清水冷却器、２３
……空気抜き管、２４……温調弁、２５……冷却
水温検出ライン、２６……冷却水温調整手段とし
てのコントローラ、Ｃ……冷却水通路、ＣＨ……
切換手段、ＣＭ……冷却水冷却手段、Ｔ……冷却
水出口温度。 Figures 1 to 3 show a cooling system for an internal combustion engine as an embodiment of the present invention. Figure 1 is a schematic diagram showing its general configuration, and Figure 2 shows the relationship between cooling water temperature and engine load. FIG. 3 is a graph showing the relationship between cooling water temperature and engine load for a modified example of this device, and FIGS. 4 and 5 are graphs showing a conventional cooling device for an internal combustion engine. The figure is a schematic diagram showing the general configuration, and FIG. 5 is a graph showing the relationship between the cooling water temperature and the engine load. 1... Cylinder liner body, 2... Cylinder liner shoulder, 3... Cylinder cover, 4... Exhaust valve seat, 5... Exhaust valve box, 6, 7... Main pipe, 8, 9...
...Branch pipe, 10,11...Connecting pipe, 12,13...
Switching valve, 14, 15...Switching valve operation signal line,
21... Fresh water pump, 22... Fresh water cooler, 23
...Air vent pipe, 24...Temperature control valve, 25...Cooling water temperature detection line, 26...Controller as cooling water temperature adjustment means, C...Cooling water passage, CH...
Switching means, CM...Cooling water cooling means, T...Cooling water outlet temperature.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 内燃機関の低負荷時にその排気弁座、シリンダ
カバーおよびシリンダライナの各近傍を順次経由
する正方向に冷却水を流通させうる冷却水通路と
、同冷却水通路内の冷却水の流れの方向を上記内
燃機関の高負荷時に逆方向へ変更しうる切換手段
と、上記冷却水通路を通過した冷却水を冷却して
から同冷却水を再び上記冷却水通路へ流入させる
ための冷却水冷却手段とをそなえ、上記冷却水通
路を通過して上記冷却水冷却手段へ流入する冷却
水の温度を上記内燃機関の高負荷時にその低負荷
時よりも低く調整する冷却水温調整手段が、上記
冷却水冷却手段に付設されたことを特徴とする、
内燃機関の冷却装置。 A cooling water passage that allows cooling water to flow in the forward direction passing through the vicinity of the exhaust valve seat, cylinder cover, and cylinder liner in sequence during low load of the internal combustion engine, and a flow direction of the cooling water in the cooling water passage. a switching means capable of changing the direction in the opposite direction when the internal combustion engine is under high load; and a cooling water cooling means for cooling the cooling water that has passed through the cooling water passage and then causing the cooling water to flow into the cooling water passage again. The cooling water temperature adjusting means adjusts the temperature of the cooling water passing through the cooling water passage and flowing into the cooling water cooling means to be lower when the internal combustion engine is under high load than when the internal combustion engine is under low load. characterized by being attached to the means,
Cooling system for internal combustion engines.