JPS6136123U

JPS6136123U - Cooling water temperature control device for water-cooled internal combustion engines

Info

Publication number: JPS6136123U
Application number: JP12041984U
Authority: JP
Inventors: 正勝野中; 博史大島
Original assignee: トヨタ自動車株式会社
Priority date: 1984-08-03
Filing date: 1984-08-03
Publication date: 1986-03-06

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]

添付の図は本考案による水冷式内機関の冷却水温度制御
装置の一つの実施例を示す概略構成図である。１・・・内燃機関、２・・・ウオータジャケット、３・
・・ウオータジャケット内冷却水通路、４・・・冷却水
入口、５，６・・・冷却水出口、７・・・メインポンプ
、８・・・冷却水通路、９・・・感温弁、１０・・・冷
却水通路、１１・・・メインラジエータ、１２・・・ア
ツパタンク、１３・・・ロアタンク、１４・・・ラジエ
ータコア、１５・・・バイパス通路、１６・・・冷却フ
ァン、１７．１８・・・冷却水通路、１９・・・サブポ
ンプ、２０・・・冷却水通路、２１・・・開閉弁、２２
・・・冷却水通路、２３・・・サブラジエータ、２４・
・・アツパタンク、２５・・・ロアタンク、２６・・・
ラジエタコア、２７・・・冷却水通路、２９・・・電動
ファン、３１・・・開閉弁、３２・・・冷却水通路、３
３・・・車室内暖房用フロントヒータコア、３４・・・
開閉弁、３５・・・冷却水通路、３６・・・車室内暖房
用リアヒータコア、３７〜３９・・・冷却水通路、４０
・・・制御装置、４２・・・水温センサ。The attached figure is a schematic diagram showing one embodiment of a cooling water temperature control device for a water-cooled internal engine according to the present invention. 1... Internal combustion engine, 2... Water jacket, 3.
...Cooling water passage in water jacket, 4...Cooling water inlet, 5, 6...Cooling water outlet, 7...Main pump, 8...Cooling water passage, 9...Temperature-sensitive valve, 10...Cooling water passage, 11...Main radiator, 12...Atsupa tank, 13...Lower tank, 14...Radiator core, 15...Bypass passage, 16...Cooling fan, 17. 18... Cooling water passage, 19... Sub pump, 20... Cooling water passage, 21... Opening/closing valve, 22
...Cooling water passage, 23...Sub radiator, 24.
・・Atsupa tank, 25・・Lower tank, 26・・・
Radiator core, 27... Cooling water passage, 29... Electric fan, 31... Opening/closing valve, 32... Cooling water passage, 3
3...Front heater core for vehicle interior heating, 34...
Opening/closing valve, 35...Cooling water passage, 36...Rear heater core for vehicle interior heating, 37-39...Cooling water passage, 40
...control device, 42...water temperature sensor.

Claims

[Scope of utility model registration request]

A water-cooled internal combustion engine having a main radiator and a sub-radiator provided in the middle of a cooling water circulation path including a cooling water passage in a water jacket provided in the engine body, and an electric fan for the sub-radiator that supplies cooling air to the sub-radiator. In the engine cooling water temperature control device, when the temperature of the cooling water that has passed through the cooling water passage in the water jacket is not higher than a first predetermined value, the cooling water in the cooling water circulation path is cooled without passing through the main radiator. When the temperature of the cooling water that has passed through the cooling water passage in the water jacket is equal to or higher than the first predetermined value, the cooling water in the cooling water passage is circulated through the main radiator to circulate the cooling water in the cooling water circulation passage. control means for switching, and when the temperature of the cooling water that has passed through the main radiator is not higher than a second predetermined value higher than the first predetermined value, the cooling water in the cooling water circulation path passes through the sub-radiator; control for switching the cooling water passage to prohibit the cooling water passing through the main radiator and to allow the cooling water in the cooling water circulation passage to pass through the sub-radiator when the temperature of the cooling water passing through the main radiator is equal to or higher than the second predetermined value; means for stopping the operation of the sub-radiator electric fan when the temperature of the cooling water that has passed through the main radiator is not higher than a third predetermined value that is higher than the second predetermined value; A cooling water temperature control device for a water-cooled internal combustion engine, comprising a control means for operating the sub-radiator electric fan when the temperature is equal to or higher than the third predetermined value.