JPS62197623A - Cooling device for air-cooled multi-cylinder type internal combustion engine - Google Patents

Cooling device for air-cooled multi-cylinder type internal combustion engine

Info

Publication number
JPS62197623A
JPS62197623A JP3969986A JP3969986A JPS62197623A JP S62197623 A JPS62197623 A JP S62197623A JP 3969986 A JP3969986 A JP 3969986A JP 3969986 A JP3969986 A JP 3969986A JP S62197623 A JPS62197623 A JP S62197623A
Authority
JP
Japan
Prior art keywords
cooling air
cylinder
cylinder block
cooling
air guide
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.)
Pending
Application number
JP3969986A
Other languages
Japanese (ja)
Inventor
Mitsunori Iwata
岩田 三憲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to JP3969986A priority Critical patent/JPS62197623A/en
Publication of JPS62197623A publication Critical patent/JPS62197623A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To enhance the cooling efficiency of an air-cooled multi-cylinder type internal combustion engine, by attaching a cooling air guide on one side of a cylinder block to define a cooling air passage between the guide and the cylinder block, and by providing a deflector for leading cooling air into the cooling air passage. CONSTITUTION:A cooling air guide 16 is laid on one side of a cylinder block 1 in which engine cylinders 8, 9 are formed in series, in parallel with the direction of arrangement of the cylinders 8, 9. This air guide 16 has an L-like shape in a plan view, for defining a cooling air passage 20 in cooperation with one side surface of the cylinder block 1. Further, a deflector 23 is attached on the inner surface of the guide plate 1 by means of a stay 22 with a space therebetween so that the cooling air passage 20 is bifurcated into a branch passage 24 for both sides of the cylinder block 1 and a branch passage 25 on the cooling air guide 16 side. Further, one end part of a deflector 23 which is bent toward the cylinder block 1 guides cooling air flowing through the branch passage 24 into the space between the engine cylinders 8, 9.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、空冷式多気筒機関の冷却装置に関する。[Detailed description of the invention] Industrial applications The present invention relates to a cooling device for an air-cooled multi-cylinder engine.

従来の技術 空冷式機関においては、一般にクランク軸のフライホイ
ール側に冷却ファンを設け、この冷却ファンによって送
り出される冷却風を、反フライホイール側に向けて流す
ようにしている。
In conventional air-cooled engines, a cooling fan is generally provided on the flywheel side of the crankshaft, and cooling air sent out by the cooling fan is directed toward the side opposite to the flywheel.

発明が解決しようとする問題点 上記従来の冷却構造において、各シリンダがクランク軸
方向に直列配置されていると、冷却風が第1のシリンダ
から第2のシリンダへ流れることとなり、第2シリンダ
側では第1のシリンダ部分で加熱されたものが供給され
るため、この第2シリンダ側の冷却が不充分であるとい
う欠点がある。
Problems to be Solved by the Invention In the conventional cooling structure described above, if the cylinders are arranged in series in the direction of the crankshaft, the cooling air will flow from the first cylinder to the second cylinder, and the cooling air will flow from the first cylinder to the second cylinder. In this case, since the heated material is supplied to the first cylinder portion, there is a drawback that cooling of the second cylinder side is insufficient.

また、第1シリンダと第2シリンダ間への冷却風の供給
も充分でないという欠点を有している。
Further, there is a drawback that the supply of cooling air between the first cylinder and the second cylinder is not sufficient.

この発明は、かかる従来の欠点を解消して、第2シリン
ダ側にも新鮮な冷却風を供給し、かつ、各シリンダ間に
も充分な冷却風を供給できるようにした多気筒機関の冷
却装置を提供することを目的としている。
The present invention solves these conventional drawbacks and provides a cooling system for a multi-cylinder engine that is capable of supplying fresh cooling air to the second cylinder side as well as supplying sufficient cooling air between each cylinder. is intended to provide.

問題点を解決するための手段 上記の目的を達成するため、この発明では、シリンダ(
8)(9)を直列配置したシリンダブロック(1)の側
方に、上記シリンダ(8)(9)配列方向と平行な冷却
風ガイド(16)を設けて、該シリンダ(8)(9)配
列方向の冷却風通路(20)を形成し、これら冷却風ガ
イド(16)とシリンダプロ、り(1)OFJ面との中
間に、上記冷却風通路(20)をシリンダブロック側面
側の分流路(24)と冷却風ガイド側の分流路(25)
 とに分割し、かつ、上記シリンダブロック側分流路(
24)の冷却風を各シリンダ(8)(9)間に導くそら
せ板(23)を設けたことを特徴としている。
Means for Solving the Problems In order to achieve the above object, the present invention uses a cylinder (
8) A cooling air guide (16) parallel to the arrangement direction of the cylinders (8) and (9) is provided on the side of the cylinder block (1) in which the cylinders (8) and (9) are arranged in series. Cooling air passages (20) are formed in the arrangement direction, and the cooling air passages (20) are connected to a branch passage on the side surface of the cylinder block between these cooling air guides (16) and the OFJ surface of the cylinder block (1). (24) and cooling air guide side branch channel (25)
and the cylinder block side branch passage (
24) is characterized by the provision of a baffle plate (23) that guides the cooling air between each cylinder (8) and (9).

作用 冷却ファン(5)からの冷却風は、シリンダブロック(
1)側面側を流れたものが第1シリンダ(8)を冷却し
た後上記そらせ板(23)によって各シリンダ(8)(
9)間へ供給される。他方、冷却風ガイド(16) I
llを流れるものは、上記そらせ板(23)と冷却風ガ
イド(16)間を通って第2シリンダ側(9)へ供給さ
れ、該第2シリンダ(9)側には第1シリンダ(8)に
よって暖められていない新鮮な冷たい冷却風が供給され
る。
Cooling air from the working cooling fan (5) flows through the cylinder block (
1) After the flow on the side cools the first cylinder (8), each cylinder (8) (
9) Supplied between. On the other hand, cooling air guide (16) I
ll is supplied to the second cylinder side (9) through between the baffle plate (23) and the cooling air guide (16), and the second cylinder (9) side is supplied to the first cylinder (8). Fresh, cold cooling air that is not heated by the air is supplied.

実施例 以下、この発明の構成を図示の実施例に基づいて説明す
ると、第4図及び第5図において、(1)はシリンダブ
ロック、(2)はクランクケースであり、この実施例で
は、これらシリンダブロック(1)とクランクケース(
2)とが一体に形成されている。クランクケース(2)
には、クランク軸(3)が軸支され、このクランク軸(
3)の一端に、フライホイール(4)と一体にして冷却
ファン(5)が形成されている。又、クランクケース(
2)の側面にはフランジ(6)が一体に形成され、この
フランジ(6)へ、上記フライホイール(4)及び冷却
ファン(5)をffう7アンケース(7)が取り付けら
れている。シリンダブロック(1)には、上記クランク
軸(3)方向に直列して第1シリンダ(8)と第2シリ
ンダ(9)が形成され、これらの各シリンダ(8)(9
)にシIJンダライナ(10)  (10)が挿入され
ている。
Embodiment Below, the structure of the present invention will be explained based on the illustrated embodiment. In FIGS. 4 and 5, (1) is a cylinder block, and (2) is a crankcase. Cylinder block (1) and crankcase (
2) are integrally formed. Crank case (2)
The crankshaft (3) is supported by the crankshaft (3).
At one end of 3), a cooling fan (5) is formed integrally with the flywheel (4). Also, the crank case (
A flange (6) is integrally formed on the side surface of 2), and an uncase (7), in which the flywheel (4) and cooling fan (5) are mounted, is attached to this flange (6). A first cylinder (8) and a second cylinder (9) are formed in the cylinder block (1) in series in the direction of the crankshaft (3), and each of these cylinders (8) (9)
) is inserted with cylinder liner (10) (10).

(11)はピストン、(12)は連接棒を示している。(11) indicates a piston, and (12) indicates a connecting rod.

シリンダブロック(1)の外側面には、冷却用ひれ(1
4)が一体に形成しである。(■3)は、シリンダブロ
ック(1)の上面に据え付けられるシリンダヘッドであ
る。(15)は、このシリンダヘッド(13)の前記ク
ランク軸(3)と平行方向の一方の側面に開口した吸気
ボートであり、この吸気ボート(13)側のシリンダヘ
ッド(13)側壁部がシリンダブロック(1)側面より
ひさし状に突出している。
Cooling fins (1) are provided on the outer surface of the cylinder block (1).
4) is integrally formed. (■3) is a cylinder head installed on the top surface of the cylinder block (1). (15) is an intake boat that is opened on one side of the cylinder head (13) in a direction parallel to the crankshaft (3), and the side wall of the cylinder head (13) on the intake boat (13) side is connected to the cylinder head (13). It protrudes like a canopy from the side of block (1).

(16)は、平面から見てL字形に折曲された冷却風ガ
イドであって、この冷却風ガイド(16)は、その一端
が、第1図の如く上記ファンケース(7)を取り付ける
ためのフランジ(6)まで延長され、その他端は、シリ
ンダブロック(1)の側面に沿って反フライホイール側
に伸びた後、シリンダブロック(1)の該反フライホイ
ール側側面を覆うよう略直角に折曲されている。また、
第4図で示すように、この冷却風ガイド(16)の下端
は、防1辰ゴム(17)を介し、シリンダブロック(1
)側面のの突出部へボルト(18)によって固着され、
同じく上端は、シリンダヘッド(1)の前記吸気ボート
(16)側突山部へ、同様に防振ゴム(19)を介して
固定されている。また、第1図で示すように、前記フラ
ンジ(6)には、ファンケース(7)の出口と、この冷
却風ガイド(16)とシリンダブロック(1)側面間の
冷却風通路(20)とを連絡する開口部(21)が形成
され、これによって、ファンケース(7)からの冷却風
が、該開口部(21)を通って冷却風ガイド(16)内
に入るようになっている。
(16) is a cooling air guide bent into an L-shape when viewed from above, and one end of this cooling air guide (16) is used to attach the fan case (7) as shown in Fig. 1. flange (6), and the other end extends along the side surface of the cylinder block (1) toward the anti-flywheel side, and then extends at a substantially right angle to cover the side surface of the cylinder block (1) on the anti-flywheel side. It is bent. Also,
As shown in FIG. 4, the lower end of this cooling air guide (16) is connected to the cylinder block (1
) is fixed to the protrusion on the side by a bolt (18),
Similarly, the upper end is fixed to the protrusion on the side of the intake boat (16) of the cylinder head (1) via a vibration isolating rubber (19). Further, as shown in FIG. 1, the flange (6) has an outlet of the fan case (7) and a cooling air passage (20) between the cooling air guide (16) and the side surface of the cylinder block (1). An opening (21) is formed in communication with the cooling air guide (16) so that the cooling air from the fan case (7) passes through the opening (21) and enters the cooling air guide (16).

冷却風ガイド(16)の内側面には、ステー(22)を
介して、そらせ板(23)が、該冷却風ガイド(16)
との間に間隔をおいて取り付けられている。
A baffle plate (23) is provided on the inner surface of the cooling air guide (16) via a stay (22).
are installed with a space between them.

このようにして、該冷却風ガイド(16)とシリンダブ
ロック(1)外側面との中間に配置されたそらせ板(2
3)により、上記冷却風通路(20)が、シリンダブロ
ック(1)側面側の分流路(24)と、冷却風ガイド(
16)側の分流路(25)とに分割され、更に、上記そ
らせ板(23)の前記ファンケース(7)と反対側の端
部(26)は、シリンダブロック(1)側へ略直角に折
り曲げされ、これによって、該シリンダブロック(1)
側面側の分流路(24)を通って流れる冷却風を、両シ
リンダ(8)(9)間に形成された第5図の冷却用空間
(27)へ供給するようにしている。
In this way, the deflection plate (2) is arranged between the cooling air guide (16) and the outer surface of the cylinder block (1).
3), the cooling air passage (20) is connected to the branch passage (24) on the side surface of the cylinder block (1) and the cooling air guide (
Furthermore, the end (26) of the baffle plate (23) on the side opposite to the fan case (7) is substantially perpendicular to the cylinder block (1) side. is bent, whereby the cylinder block (1)
Cooling air flowing through the side branch channel (24) is supplied to the cooling space (27) shown in FIG. 5 formed between the cylinders (8) and (9).

発明の効果 この発明によれば、冷却風ガイド(16)とシリンダブ
ロック(1)側面との冷却風通路(20)が、そらせ板
(23)によって分割され、該冷却風ガイド(16)側
の冷却風は、そらせ板(23)の背面側を通って第2シ
リンダ(9)側へ供給され、そのため、この第2シリン
ダ(9)側には、それよりも上流の第1シリンダ(8)
によって暖められていない新鮮な冷気が供給されること
となり、第2シリンダ(9)側の冷却効率が向上する。
Effects of the Invention According to this invention, the cooling air passage (20) between the cooling air guide (16) and the side surface of the cylinder block (1) is divided by the baffle plate (23), and the cooling air passage (20) on the side of the cooling air guide (16) is divided by the baffle plate (23). The cooling air is supplied to the second cylinder (9) side through the back side of the baffle plate (23), and therefore, the second cylinder (9) side is supplied with the first cylinder (8) which is upstream of the second cylinder (9) side.
Fresh cold air that has not been warmed by this is supplied, and the cooling efficiency on the second cylinder (9) side is improved.

また、このそらせ板(23)によって、各シリンダ(8
)(9)間にも冷却風が供給されることから、これら両
シリンダ(8)(9)間の冷却も良好となる効果が得ら
れる。
Also, each cylinder (8
) and (9), the cooling air between these two cylinders (8) and (9) can also be improved.

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

第1図は、この発明の実施例を示す要部分解図、第2図
は、冷却風ガイドの横断面図、第3図は、同じく冷却風
ガイドの斜視図、第4図は、エンジン全体をクランク軸
と直角な方向で切断した縦断面図、第5図は、同じ(ク
ランク軸方向で切断した縦断面図である。 (1)・・・シリンダブロック、(8)・・・第1シリ
ンダ、(9)・・・第2シリンダ、(16)・・・冷却
風ガイド、(23)・・・そらせ板、(24)  (2
5)・・・分流路。 特許 出願人 ヤンマーディーゼル株式会社代理人弁理
士 樽   本   久   幸第2図 第1図
Fig. 1 is an exploded view of essential parts showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of a cooling air guide, Fig. 3 is a perspective view of the cooling air guide, and Fig. 4 is an overall view of the engine. Fig. 5 is a vertical cross-sectional view taken in the direction perpendicular to the crankshaft, and Fig. 5 is a longitudinal cross-sectional view taken in the direction of the crankshaft. Cylinder, (9)...Second cylinder, (16)...Cooling air guide, (23)...Deflection plate, (24) (2
5)...Diversion channel. Patent Applicant: Yanmar Diesel Co., Ltd. Representative Patent Attorney Hisayuki Tarumoto Figure 2 Figure 1

Claims (1)

【特許請求の範囲】[Claims] シリンダ(8)(9)を直列配置したシリンダブロック
(1)の側方に、上記シリンダ(8)(9)配列方向と
平行な冷却風ガイド(16)を設けて、該シリンダ(8
)(9)配列方向の冷却風通路(20)を形成し、これ
ら冷却風ガイド(16)とシリンダブロック(1)側面
との中間に、上記冷却風通路(20)をシリンダブロッ
ク側面側の分流路(24)と冷却風ガイド側の分流路(
25)とに分割し、かつ、上記シリンダブロック側分流
路(24)の冷却風を各シリンダ(8)(9)間に導く
そらせ板(23)を設けたことを特徴とする空冷式多気
筒機関の冷却装置。
A cooling air guide (16) parallel to the direction in which the cylinders (8) and (9) are arranged is provided on the side of the cylinder block (1) in which the cylinders (8) and (9) are arranged in series.
) (9) Cooling air passages (20) are formed in the arrangement direction, and the cooling air passages (20) are branched on the side of the cylinder block between these cooling air guides (16) and the side of the cylinder block (1). channel (24) and the cooling air guide side branch channel (
25) and a deflector plate (23) that guides the cooling air from the cylinder block side branch passage (24) between each cylinder (8) and (9). Engine cooling system.
JP3969986A 1986-02-24 1986-02-24 Cooling device for air-cooled multi-cylinder type internal combustion engine Pending JPS62197623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3969986A JPS62197623A (en) 1986-02-24 1986-02-24 Cooling device for air-cooled multi-cylinder type internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3969986A JPS62197623A (en) 1986-02-24 1986-02-24 Cooling device for air-cooled multi-cylinder type internal combustion engine

Publications (1)

Publication Number Publication Date
JPS62197623A true JPS62197623A (en) 1987-09-01

Family

ID=12560264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3969986A Pending JPS62197623A (en) 1986-02-24 1986-02-24 Cooling device for air-cooled multi-cylinder type internal combustion engine

Country Status (1)

Country Link
JP (1) JPS62197623A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04123325U (en) * 1991-04-23 1992-11-09 富士ロビン株式会社 Cooling system for 2-cycle 2-cylinder engine
JPH0566221U (en) * 1992-02-19 1993-09-03 富士ロビン株式会社 Cooling system for 2-cycle 2-cylinder engine
JPH0589837U (en) * 1991-07-10 1993-12-07 富士ロビン株式会社 Cooling system for 2-cycle 2-cylinder engine
JP2009243450A (en) * 2008-04-01 2009-10-22 Guangyang Ind Co Ltd Engine heat dissipating structure
JP2010180720A (en) * 2009-02-03 2010-08-19 Fuji Heavy Ind Ltd Engine cooling structure
USD632770S1 (en) 2008-06-13 2011-02-15 Kohler Co. Cyclonic air cleaner housing
JP2015155653A (en) * 2014-02-20 2015-08-27 スズキ株式会社 Cooling structure of engine
US9206721B2 (en) 2008-06-13 2015-12-08 Kohler Co. Cyclonic air cleaner
EP3385521A1 (en) * 2017-04-03 2018-10-10 TVS Motor Company Limited A cooling system for an internal combustion engine
CN113513399A (en) * 2021-05-26 2021-10-19 珠海天晴航空航天科技有限公司 Aircraft engine and heat dissipation control method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4816253B1 (en) * 1969-10-27 1973-05-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4816253B1 (en) * 1969-10-27 1973-05-21

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04123325U (en) * 1991-04-23 1992-11-09 富士ロビン株式会社 Cooling system for 2-cycle 2-cylinder engine
JPH0589837U (en) * 1991-07-10 1993-12-07 富士ロビン株式会社 Cooling system for 2-cycle 2-cylinder engine
JPH0566221U (en) * 1992-02-19 1993-09-03 富士ロビン株式会社 Cooling system for 2-cycle 2-cylinder engine
JP2009243450A (en) * 2008-04-01 2009-10-22 Guangyang Ind Co Ltd Engine heat dissipating structure
USD632770S1 (en) 2008-06-13 2011-02-15 Kohler Co. Cyclonic air cleaner housing
US9206721B2 (en) 2008-06-13 2015-12-08 Kohler Co. Cyclonic air cleaner
JP2010180720A (en) * 2009-02-03 2010-08-19 Fuji Heavy Ind Ltd Engine cooling structure
JP2015155653A (en) * 2014-02-20 2015-08-27 スズキ株式会社 Cooling structure of engine
EP3385521A1 (en) * 2017-04-03 2018-10-10 TVS Motor Company Limited A cooling system for an internal combustion engine
CN113513399A (en) * 2021-05-26 2021-10-19 珠海天晴航空航天科技有限公司 Aircraft engine and heat dissipation control method thereof

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