JPH01100312A - Cooling device of slant type internal combustion engine - Google Patents
Cooling device of slant type internal combustion engineInfo
- Publication number
- JPH01100312A JPH01100312A JP25675187A JP25675187A JPH01100312A JP H01100312 A JPH01100312 A JP H01100312A JP 25675187 A JP25675187 A JP 25675187A JP 25675187 A JP25675187 A JP 25675187A JP H01100312 A JPH01100312 A JP H01100312A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- passage
- cylinder
- intake
- cylinder head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 title claims description 8
- 239000000498 cooling water Substances 0.000 claims abstract description 146
- 239000000945 filler Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/10—Fuel manifold
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、クランク軸の方向から見たときにおけるシリ
ンダボアの軸線を水平線に対して傾斜（スラント）した
いわゆるスラント型の内燃機関において、吸気予熱機構
を備えた冷却装置に関するものである。Detailed Description of the Invention [Industrial Application Field] The present invention provides a method for preheating intake air in a so-called slant-type internal combustion engine in which the axis of the cylinder bore is inclined (slanted) with respect to the horizontal line when viewed from the direction of the crankshaft. This invention relates to a cooling device equipped with a mechanism.
先行技術としての実公昭６１−３７８１８号公報は、ス
ラント型の内燃機関において、そのシリンダヘッドの長
手側面に接続した吸気マニホールドに、前記シリンダヘ
ッドの冷却水室に対して各気筒の箇所において連通ずる
と共に、シリンダヘッドの冷却水室からラジェータへの
冷却水アウトレットに連通する吸気予熱通路を設ける一
方、前記冷却水アウトレットに、冷却水の温度が高くな
ると開くようにしたサーモ弁を設けて成る吸気予熱機構
付きの冷却装置を提案している。Japanese Utility Model Publication No. 61-37818 as a prior art discloses that in a slant type internal combustion engine, an intake manifold connected to the longitudinal side of the cylinder head communicates with the cooling water chamber of the cylinder head at a location of each cylinder. In addition, an intake preheating passage is provided that communicates with the cooling water outlet from the cooling water chamber of the cylinder head to the radiator, and a thermo valve that opens when the temperature of the cooling water becomes high is provided in the cooling water outlet. We are proposing a cooling device with a mechanism.
しかし、この冷却装置における吸気予熱通路は、内燃機
関をスラントしたことによって、冷却水循環経路の中で
最も高い所に位置することになり、この部分に空気が溜
ることになるが、これにも拘わらず、この吸気予熱通路
に溜った空気は、サーモ弁が開らかない限り抜けること
がないので、冷却水循環経路に対して冷却水を一杯に注
入することが困難になり、これに多大の手数を要するの
であり、しかも、冷却水がシリンダヘッドの冷却水室か
ら前記吸気予熱通路側に流出したのち再びシリンダヘッ
ドの冷却水室に戻ると云う冷却水の循環が、前記吸気予
熱通路に溜る空気によって阻害されるから、冷間運転中
における吸気予熱を十分に達成することができないので
あった。However, due to the slanted internal combustion engine, the intake preheating passage in this cooling system is located at the highest point in the cooling water circulation path, and air accumulates in this part. First, the air accumulated in the intake preheating passage cannot escape unless the thermo valve is opened, making it difficult to fully inject cooling water into the cooling water circulation path, which requires a lot of effort. Moreover, the circulation of the cooling water, in which the cooling water flows out from the cooling water chamber of the cylinder head to the intake preheating passage side and then returns to the cooling water chamber of the cylinder head, is caused by the air accumulated in the intake air preheating passage. As a result, sufficient intake air preheating during cold operation cannot be achieved.
本発明は、この問題を解消したスラント型内燃機関用冷
却装置を提供することを目的とするものである。An object of the present invention is to provide a slant type internal combustion engine cooling device that solves this problem.
このため本発明は、クランク軸の方向から見たときにお
けるシリンダポアの軸線を水平線に対して傾斜し、且つ
、シリンダヘッドにおける長手側面に接続した吸気マニ
ホールドに、前記シリンダヘッドの冷却水室に対して各
気筒の箇所において連通ずる吸気予熱通路を設けて成る
スラント型内燃機関において、前記吸気予熱通路を、シ
リンダヘッドの冷却水アウトレットからラジェータへの
冷却水流出通路又はラジェータに設けた冷却水フィラー
に小径の空気抜き通路を介して接続する一方、ラジェー
タから冷却水ポンプを経てシリンダブロックの冷却水室
に至る冷却水戻り通路には、冷却水ポンプへの吸込側の
部位にサーモ弁ケースを設けて、このサーモ弁ケースに
前記吸気予熱通路からの小径の第１バイパス通路を接続
し、且つ、該サーモ弁ケース内には、冷却水の温度が低
いとき冷却水戻り通路の冷却水ポンプへの連通を遮断す
ると共に第１バイパス通路を冷却水ポンプに連通し、冷
却水の温度が高いとき冷却水戻り通路を冷却水ポンプに
連通ずると共に第１バイパス通路を閉じるように構成し
たサーモ弁を設け、更に、前記吸気予熱通路又は前記空
気抜き通路と前記冷却水戻り通路とを、小径の第２バイ
パス通路を介して接続した構成にしたものである。Therefore, in the present invention, the axis of the cylinder pore is inclined with respect to the horizontal line when viewed from the direction of the crankshaft, and the intake manifold connected to the longitudinal side of the cylinder head is connected to the cooling water chamber of the cylinder head. In a slant-type internal combustion engine that is provided with an intake preheating passage that communicates with each cylinder, the intake preheating passage is connected to a cooling water outlet passage from the cooling water outlet of the cylinder head to the radiator, or a cooling water filler provided in the radiator with a small diameter. On the other hand, the cooling water return passage from the radiator to the cooling water chamber of the cylinder block via the cooling water pump is equipped with a thermo-valve case on the suction side to the cooling water pump. A small-diameter first bypass passage from the intake air preheating passage is connected to the thermovalve case, and a first bypass passage with a small diameter from the intake air preheating passage is connected to the thermovalve case, and a cooling water return passage is configured to cut off communication with the cooling water pump when the temperature of the cooling water is low. At the same time, a thermo-valve configured to connect the first bypass passage to the cooling water pump and to connect the cooling water return passage to the cooling water pump and close the first bypass passage when the temperature of the cooling water is high is provided, and further, The intake air preheating passage or the air venting passage and the cooling water return passage are connected via a small-diameter second bypass passage.
この構成において、冷却水の温度が低いときサーモ弁は
、冷却水戻り通路の冷却水ポンプへの連通を遮断すると
共に第１バイパス通路を冷却水ポンプに連通しているか
ら、シリンダヘッドの冷却水室における冷却水は、各気
筒の箇所から吸気予熱通路に流出し、この吸気予熱通路
から第１バイパス通路を介して冷却水ポンプ及びシリン
ダブロックの冷却水室を経てシリンダヘッドの冷却水室
に戻る循環をするから、吸気予熱を行うことができる。In this configuration, when the temperature of the cooling water is low, the thermo-valve cuts off the communication of the cooling water return passage to the cooling water pump and also communicates the first bypass passage with the cooling water pump, so that the cooling water in the cylinder head is Cooling water in the chamber flows out from each cylinder into the intake preheating passage, and returns from the intake preheating passage to the cooling water chamber of the cylinder head via the first bypass passage, the cooling water pump and the cooling water chamber of the cylinder block. Since it circulates, intake air can be preheated.
そして、冷却水の温度が高くなると、サーモ弁が冷却水
戻り通路を冷却水ポンプに連通ずると共に第１バイパス
通路を閉じるように作動するから、シリンダヘッドの冷
却水室における冷却水は、冷却水アウトレフトからラジ
ェータ、冷却水ポンプ及びシリンダブロックの冷却水室
を経てシリンダヘッドの冷却水室に戻る循環をすると同
時に、シリンダヘッドの冷却水室における冷却水の一部
が、各気筒の箇所から吸気予熱通路及び第２バイパス通
路を経て冷却水ポンプに吸い込まれる循環をするから、
内燃機関の冷却と、吸気予熱とを同時に行うのである。When the temperature of the cooling water rises, the thermovalve connects the cooling water return passage to the cooling water pump and operates to close the first bypass passage, so that the cooling water in the cooling water chamber of the cylinder head is At the same time, a portion of the cooling water in the cylinder head cooling water chamber is circulated from the outleft through the radiator, the cooling water pump, and the cylinder block cooling water chamber and back to the cylinder head cooling water chamber. Because the cooling water is circulated through the preheating passage and the second bypass passage, it is sucked into the cooling water pump.
Cooling of the internal combustion engine and preheating of the intake air are performed at the same time.
この場合において、冷却水循環経路の中で最も高い所に
位置する吸気予熱通路を、小径の空気を友き通路を介し
て冷却水フィラーに接続したことにより、冷却水フィラ
ーからの冷却水の注入に際して、前記吸気予熱通路に溜
る空気の総てを、空気抜き通路を介して冷却水フィラー
より抜くことができるから、冷却水循環経路内に冷却水
を一杯に充填することが至極容易にできると共に、シリ
ンダヘッドの冷却水室における冷却水の一部が吸気予熱
通路に流出したのち再びシリンダヘッドの冷却水室に戻
ると云う循環が、吸気予熱通路に溜る空気によって阻害
されることを確実に防止できるのである。In this case, the intake preheating passage located at the highest point in the cooling water circulation path is connected to the cooling water filler through a small-diameter air passage, so that when the cooling water is injected from the cooling water filler, Since all of the air accumulated in the intake preheating passage can be removed from the cooling water filler via the air vent passage, it is extremely easy to fill the cooling water circulation path with cooling water, and the cylinder head This reliably prevents the circulation in which a portion of the cooling water in the cooling water chamber of the engine flows out into the intake preheating passage and then returns to the cooling water chamber of the cylinder head from being obstructed by the air that accumulates in the intake air preheating passage. .
従って本発明によると、スラント型内燃機関において、
その冷却水循環経路への冷却水の注入に要する手数を軽
減できると共に、吸気予熱を如何なる運転域、つまり冷
却水が所定の温度に暖まるまでの間における暖機運転及
び冷却水が所定の温度に暖まった後の通常運転において
も確実に、且つ、的確に達成できる効果を有する。Therefore, according to the present invention, in a slant type internal combustion engine,
In addition to reducing the effort required to inject cooling water into the cooling water circulation path, it is also possible to perform intake preheating in any operating range, including warm-up operation until the cooling water warms to a predetermined temperature, and cooling water to a predetermined temperature. This effect can be achieved reliably and accurately even during normal operation after the operation.
以下本発明の実施例を図面について説明するに、図にお
いて符号１は、クランク軸の方向から見たときにおける
シリンダポアの軸線２を水平線３に対して適宜角度θだ
げ傾斜したスラント型の内燃機関を示し、該内燃機関１
においてそのシリンダブロック４の上面におけるシリン
ダヘッド５の長手側面には、気化器６からの吸気を各気
筒に分配するようにした吸気マニホールド７が接続され
ている。Embodiments of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a slant-type internal combustion engine in which the axis 2 of the cylinder pore is inclined by an appropriate angle θ with respect to the horizontal line 3 when viewed from the direction of the crankshaft. , and the internal combustion engine 1
An intake manifold 7 is connected to the longitudinal side surface of the cylinder head 5 on the upper surface of the cylinder block 4 to distribute intake air from the carburetor 6 to each cylinder.
この吸気マニホールド７の下面には、前記シリンダヘッ
ド５の冷却水室８に各気筒の箇所において連通する吸気
予熱通路９が一体的に形成されると共に、前記シリンダ
ヘッド５の冷却水室８に対する冷却水アウトレット１０
が設けられ、この冷却水アウトレット１０とラジェータ
１１のアッパタンク（図示せず）との間を接続する冷却
水流出通路１２には、冷却水の循環経路に対して冷却水
の注入を行うためのキャップ付き冷却水フィラー１３が
設けられ、この冷却水フィラー１３に、前記吸気予熱通
路９からの小径の空気凄き通路１４を接続する。An intake preheating passage 9 that communicates with the cooling water chamber 8 of the cylinder head 5 at each cylinder location is integrally formed on the lower surface of the intake manifold 7. water outlet 10
A cooling water outflow passage 12 connecting the cooling water outlet 10 and an upper tank (not shown) of the radiator 11 is provided with a cap for injecting cooling water into the cooling water circulation path. A cooling water filler 13 is provided, and a small diameter air passage 14 from the intake air preheating passage 9 is connected to this cooling water filler 13.
前記シリンダブロック４における長手側面には、サーモ
弁ケース１５が造形され、該サーモ弁ケース１５には、
前記ラジェータ１１のローワタンク（図示せず）からの
冷却水戻り通路１６が接続されると共に、前記シリンダ
ブロック４内に前記吸気予熱通路９に連通ずるように形
成した第１バイパス通路１７が開口している。また、こ
のサーモ弁ケース１５は、前記シリンダブロック４に取
付く冷却水ポンプ１８の吸込み側に通路２１を介して連
通しており、冷却水ポンプ１８から吐出される冷却水は
、シリンダブロック４の冷却水室（図示せず）経て前記
シリンダヘッド５の冷却水室８に戻るように構成されて
いる。A thermovalve case 15 is formed on the longitudinal side of the cylinder block 4, and the thermovalve case 15 includes:
A cooling water return passage 16 from a lower tank (not shown) of the radiator 11 is connected thereto, and a first bypass passage 17 formed in the cylinder block 4 so as to communicate with the intake preheating passage 9 is opened. There is. The thermovalve case 15 also communicates with the suction side of the cooling water pump 18 attached to the cylinder block 4 via a passage 21, and the cooling water discharged from the cooling water pump 18 is connected to the suction side of the cooling water pump 18 attached to the cylinder block 4. It is configured to return to the cooling water chamber 8 of the cylinder head 5 via a cooling water chamber (not shown).
そして、前記サーモ弁ケース１５内には、冷却水の温度
が低いとき冷却水戻り通路１６の冷却水ポンプ１８への
連通を遮断すると共に第１バイパス通路１７を冷却水ポ
ンプ１８に連通し、冷却水の温度が高いとき冷却水戻り
通路１６を冷却水ポンプ１８に連通ずると共に第１バイ
パス通路１７を閉じるように構成したサーモ弁１９を設
ける一方、前記冷却水戻り通路１６と前記空気抜き通路
１４とを、小径の第２バイパス通路２０を介して接続す
る。In the thermovalve case 15, when the temperature of the cooling water is low, communication of the cooling water return passage 16 to the cooling water pump 18 is cut off, and the first bypass passage 17 is connected to the cooling water pump 18, so that the cooling water is cooled. A thermo-valve 19 configured to communicate the cooling water return passage 16 with the cooling water pump 18 and close the first bypass passage 17 when the water temperature is high is provided, while the cooling water return passage 16 and the air vent passage 14 are connected to each other. are connected via a second bypass passage 20 with a small diameter.
この構成において、冷却水フィラー１３から冷却水を注
水すると、冷却水循環経路のうち最も高い所に位置する
吸気予熱通路９に溜る空気は、空気抜き通路１４を介し
て冷却水フィラーより抜くことができるから、冷却水循
環経路内に冷却水を一杯に充虜することができる。In this configuration, when cooling water is injected from the cooling water filler 13, the air accumulated in the intake preheating passage 9 located at the highest point in the cooling water circulation path can be removed from the cooling water filler via the air vent passage 14. , the cooling water circulation path can be fully filled with cooling water.
そして、内燃機関の運転に際して、冷却水の温度が低い
ときには、サーモ弁１９が、冷却水戻り通路１６の冷却
水ポンプ１８への連通を遮断すると共に第１バイパス通
路１７を冷却水ポンプ１８に連通しているから、シリン
ダヘッド５の冷却水室８における冷却水は、各気筒の箇
所から吸気予熱通路９に流出し、この吸気予熱通路９が
ら第１バイパス通路１７を介して冷却水ポンプ１８及び
シリンダブロック４の冷却水室を経てシリンダヘッド５
の冷却水室８に戻る循環をするから、吸気予熱を行うこ
とができる。During operation of the internal combustion engine, when the temperature of the cooling water is low, the thermovalve 19 cuts off the communication of the cooling water return passage 16 with the cooling water pump 18 and connects the first bypass passage 17 with the cooling water pump 18. Therefore, the cooling water in the cooling water chamber 8 of the cylinder head 5 flows out from each cylinder into the intake preheating passage 9, and from this intake preheating passage 9 flows through the first bypass passage 17 to the cooling water pump 18 and The cylinder head 5 passes through the cooling water chamber of the cylinder block 4.
Since the cooling water is circulated back to the cooling water chamber 8, the intake air can be preheated.
また、冷却水の温度が高くなると、サーモ弁１９が、冷
却水戻り通路１６を冷却水ポンプ１８に連通ずると共に
第１バイパス通路１７を閉じるように作動するから、シ
リンダヘッド５の冷却水室８における冷却水は、冷却水
アウトレット１ｏがらラジェータ１１、冷却水ポンプ１
８及びシリンダブロック４の冷却水室を経てシリンダヘ
ッド５の冷却水室８に戻る循環をすると同時に、シリン
ダヘッド５の冷却水室８における冷却水の一部が、各気
筒の箇所から吸気予熱通路９に流出したのち、空気抜き
通路１４及び第２バイパス通路２０を経て冷却水ポンプ
１８に吸い込まれる循環をするから、内燃機関の冷却と
、吸気予熱とを同時に行うのである。Furthermore, when the temperature of the cooling water becomes high, the thermovalve 19 operates to connect the cooling water return passage 16 to the cooling water pump 18 and close the first bypass passage 17. The cooling water is supplied from the cooling water outlet 1o to the radiator 11 and the cooling water pump 1.
8 and the cooling water chamber of the cylinder block 4 and return to the cooling water chamber 8 of the cylinder head 5. At the same time, a portion of the cooling water in the cooling water chamber 8 of the cylinder head 5 is transferred from each cylinder to the intake preheating passage. After flowing out to the air pump 9, the air is circulated through the air vent passage 14 and the second bypass passage 20 to be sucked into the cooling water pump 18, thereby cooling the internal combustion engine and preheating the intake air at the same time.
なお、前記第２バイパス通路２０は、冷却水戻り通路１
６における一番高い部位に接続され、冷却水戻り通路１
６に対する空気抜き通路を兼ねている。また、前記空気
抜き通路１４は、前記冷却水流出通路１２に設けた冷却
水フィラー１３に接続することにイＬえて、ラジェータ
１１に設けられている冷却水フィラー（図示せず）に接
続しても良く、更にまた、前記第２バイパス通路２０は
、空気抜き通路１４に接続することに代えて、吸気予熱
通路９に直接的に接続しても良いのである。Note that the second bypass passage 20 is connected to the cooling water return passage 1.
Cooling water return passage 1
It also serves as an air vent passage for 6. In addition to connecting the air vent passage 14 to the cooling water filler 13 provided in the cooling water outflow passage 12, the air vent passage 14 may also be connected to a cooling water filler (not shown) provided in the radiator 11. Furthermore, the second bypass passage 20 may be directly connected to the intake air preheating passage 9 instead of being connected to the air vent passage 14.
図面は本発明の実施例を示し、第１図は内燃機関の平面
図、第２図は第１図のｎ−ｎ視断面図、第３図は第１図
のｍ−ｍ楔断面図である。
１・・・・内燃機関、２・・・・シリンダボアの軸線、
３・・・・水平線、４・・・・シリンダブロック、５・
・・・シリンダヘッド、７・・・・吸気マニホールド、
８・・・・シリンダヘッドの冷却水室、９・・・・吸気
予熱通路、１０・・・・冷却水アウトレット、１１・・
・・ラジェータ、１２・・・・冷却水流出通路、１３・
・・・冷却水フィラー、１４・・・・空気凄き通路、１
５・・・・サーモ弁ケース、１６・・・・冷却水戻り通
路、１７・・・・第１バイパス通路、１８・・・・冷却
水ポンプ、１９・・・・サーモ弁、２０・・・・第２バ
イパス通路。
特許出願人 ダイハツ工業株式会社The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of an internal combustion engine, FIG. 2 is a cross-sectional view taken along line nn in FIG. 1, and FIG. 3 is a mm-m wedge cross-sectional view in FIG. be. 1... Internal combustion engine, 2... Axis of cylinder bore,
3...Horizontal line, 4...Cylinder block, 5...
...Cylinder head, 7...Intake manifold,
8...Cylinder head cooling water chamber, 9...Intake preheating passage, 10...Cooling water outlet, 11...
...Radiator, 12...Cooling water outflow passage, 13.
...Cooling water filler, 14...Air passage, 1
5... Thermo valve case, 16... Cooling water return passage, 17... First bypass passage, 18... Cooling water pump, 19... Thermo valve, 20...・Second bypass passage. Patent applicant Daihatsu Motor Co., Ltd.
Claims (1)
ダボアの軸線を水平線に対して傾斜し、且つ、シリンダ
ヘッドにおける長手側面に接続した吸気マニホールドに
、前記シリンダヘッドの冷却水室に対して各気筒の箇所
において連通する吸気予熱通路を設けて成るスラント型
内燃機関において、前記吸気予熱通路を、シリンダヘッ
ドの冷却水アウトレットからラジエータへの冷却水流出
通路又はラジエータに設けた冷却水フィラーに小径の空
気抜き通路を介して接続する一方、ラジエータから冷却
水ポンプを経てシリンダブロックの冷却水室に至る冷却
水戻り通路には、冷却水ポンプへの吸込側の部位にサー
モ弁ケースを設けて、このサーモ弁ケースに前記吸気予
熱通路からの小径の第１バイパス通路を接続し、且つ、
該サーモ弁ケース内には、冷却水の温度が低いとき冷却
水戻り通路の冷却水ポンプへの連通を遮断すると共に第
１バイパス通路を冷却水ポンプに連通し、冷却水の温度
が高いとき冷却水戻り通路を冷却水ポンプに連通すると
共に第１バイパス通路を閉じるように構成したサーモ弁
を設け、更に、前記吸気予熱通路又は前記空気抜き通路
と前記冷却水戻り通路とを、小径の第２バイパス通路を
介して接続したことを特徴とするスラント型内燃機関の
冷却装置。(1) The axis of the cylinder bore when viewed from the direction of the crankshaft is inclined with respect to the horizontal line, and each cylinder is connected to the intake manifold connected to the longitudinal side of the cylinder head with respect to the cooling water chamber of the cylinder head. In a slant type internal combustion engine, the intake preheating passage is connected to a cooling water outflow passage from the cooling water outlet of the cylinder head to the radiator, or a small diameter air vent to a cooling water filler provided in the radiator. On the other hand, in the cooling water return passage from the radiator to the cooling water chamber of the cylinder block via the cooling water pump, a thermo valve case is provided on the suction side to the cooling water pump, and this thermo valve A small diameter first bypass passage from the intake air preheating passage is connected to the case, and
Inside the thermovalve case, a cooling water return passage is disconnected from the cooling water pump when the cooling water temperature is low, and a first bypass passage is connected to the cooling water pump, and when the cooling water temperature is high, the cooling water return passage is disconnected from the cooling water pump. A thermo valve configured to communicate the water return passage with the cooling water pump and close the first bypass passage is provided; A cooling device for a slant-type internal combustion engine characterized by being connected through a passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25675187A JPH01100312A (en) | 1987-10-12 | 1987-10-12 | Cooling device of slant type internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25675187A JPH01100312A (en) | 1987-10-12 | 1987-10-12 | Cooling device of slant type internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01100312A true JPH01100312A (en) | 1989-04-18 |
| JPH0477134B2 JPH0477134B2 (en) | 1992-12-07 |
Family
ID=17296938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25675187A Granted JPH01100312A (en) | 1987-10-12 | 1987-10-12 | Cooling device of slant type internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01100312A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59174361U (en) * | 1983-05-09 | 1984-11-21 | ダイハツ工業株式会社 | Water cooling system for internal combustion engines |
| JPS6119623U (en) * | 1984-07-10 | 1986-02-04 | 富士重工業株式会社 | Internal combustion engine cooling system |
-
1987
- 1987-10-12 JP JP25675187A patent/JPH01100312A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59174361U (en) * | 1983-05-09 | 1984-11-21 | ダイハツ工業株式会社 | Water cooling system for internal combustion engines |
| JPS6119623U (en) * | 1984-07-10 | 1986-02-04 | 富士重工業株式会社 | Internal combustion engine cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0477134B2 (en) | 1992-12-07 |
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