JPH04166422A - Riding type working vehicle - Google Patents
Riding type working vehicleInfo
- Publication number
- JPH04166422A JPH04166422A JP29403190A JP29403190A JPH04166422A JP H04166422 A JPH04166422 A JP H04166422A JP 29403190 A JP29403190 A JP 29403190A JP 29403190 A JP29403190 A JP 29403190A JP H04166422 A JPH04166422 A JP H04166422A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- cooling air
- bonnet
- air
- air intake
- 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
- 238000001816 cooling Methods 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は例えば乗用型芝刈機等の乗用型作業車に関し、
詳しくは、上面に冷却風吸入口を備えるとともに前部に
シリンダヘッドを位置させた強制空冷式縦軸型のエンジ
ンを、操縦ボックスの前方に連設したボンネット内に装
備するとともに、前記操縦ボックスに外気取入口を形成
した乗用型作業車に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a riding vehicle such as a riding lawn mower,
Specifically, a forced air-cooled vertical shaft type engine with a cooling air inlet on the top surface and a cylinder head located at the front is installed in a bonnet connected to the front of the control box, and The present invention relates to a riding work vehicle having an outside air intake.
従来、この種の乗用型作業車にあっては、例えば、エン
ジン上面かわにボンネットの左右側壁間にわたって水平
に仕切板を架設し、この仕切板の前端辺を立ち上げ屈曲
してボンネット天井内面との間を遮へいするようにして
、その水平な仕切板に形成した冷却風取入用の通気口か
らエンジン上面の冷却風吸入口に冷却風を取入れる構造
、すなわち、ボンネット内のエンジンルームの上部の狭
い空間に冷却風を案内する構造となっていた。Conventionally, in this type of riding work vehicle, for example, a partition plate was installed horizontally between the left and right side walls of the bonnet above the engine, and the front end of this partition plate was raised and bent to form the inner surface of the bonnet ceiling. A structure that takes cooling air from the cooling air intake vent formed in the horizontal partition plate to the cooling air intake port on the top of the engine, in other words, the upper part of the engine compartment in the hood. The structure was designed to guide cooling air into a narrow space.
しかしながら、上記従来構造のものは、冷却風か水平の
仕切板とボンネット天井に囲まれた狭い空間を通って冷
却風吸入口に導入されるため、冷却風の取入量か不十分
になって、エンジンに対する冷却性能か低下し易いもの
であった。However, with the conventional structure described above, the cooling air is introduced into the cooling air intake through a narrow space surrounded by a horizontal partition plate and the bonnet ceiling, resulting in insufficient intake of cooling air. However, the cooling performance for the engine was likely to deteriorate.
本発明は、上記実情に鑑みてなされたものであって、エ
ンジン冷却風を冷却風吸入口へ取入れ易くできる乗用型
作業車の提供を目的とする。The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a riding-type work vehicle that can easily take engine cooling air into a cooling air intake port.
本発明にかかる乗用型作業車は、上記目的を達成するた
めに、冒記構造のものにおいて、前記ボンネットで外囲
されるエンジンルームを、前記シリンダヘッドが収容さ
れる前室と、エンジン上面の前記冷却風吸入口か収容さ
れる後室とに区画する遮へい板を前記エンジンかわに固
設するとともに、この遮へい板を、前記ボンネット天井
部内面と前記エンジン上部との間を遮へいする上辺部と
、前記ボンネット側壁部内面と前記エンジン側部との間
を遮へいする側辺部とで構成し、前記外気取入口からの
冷却風を前記エンジンの左右両脇を通って前記エンジン
上部に導く導風路が前記後室に形成されるように前記遮
へい板の前記側辺部を形成してあることを特徴構成とす
る。In order to achieve the above object, the riding type work vehicle according to the present invention has the above-mentioned structure, and has an engine room surrounded by the bonnet, a front chamber in which the cylinder head is accommodated, and a front chamber in which the cylinder head is housed, and a top surface of the engine. A shielding plate that partitions the cooling air intake into a rear chamber in which the cooling air intake is accommodated is fixed to the engine side, and the shielding plate has an upper side portion that shields between the inner surface of the bonnet ceiling and the upper part of the engine. , a side part that shields between the inner surface of the bonnet side wall part and the engine side part, and guides the cooling air from the outside air intake to the upper part of the engine through both left and right sides of the engine. The invention is characterized in that the side portions of the shielding plate are formed such that a channel is formed in the rear chamber.
かかる特徴構成による作用効果は次の通りである。The effects of this characteristic configuration are as follows.
すなわち、遮へい板によって、冷却風をエンジンの後方
がわから導入できるとともに、エンジンの左右両脇をも
通して冷却風をエンジン上面の冷却風吸入口に導入でき
るので、冷却風は広い空間を通って導入されることにな
り、エンジンに対して冷却風の供給か十分なされること
になる。又、遮へい板でエンジンルームか前室と後室と
に区画されるので、前室から高温の空気か後室へ流入す
ることも回避される。In other words, the shield plate allows cooling air to be introduced from the rear of the engine, and also allows the cooling air to pass through both the left and right sides of the engine and into the cooling air intake port on the top of the engine, allowing the cooling air to pass through a wide space. This will ensure a sufficient supply of cooling air to the engine. Furthermore, since the engine room is divided into a front chamber and a rear chamber by a shielding plate, hot air from the front chamber is prevented from flowing into the rear chamber.
従って、エンジンに対して冷却風が十分供給されるので
、エンジンの高出力での駆動や長時間駆動によってエン
ジン性能か劣化することを抑制できるに至った。Therefore, since a sufficient amount of cooling air is supplied to the engine, it is possible to suppress deterioration of engine performance caused by driving the engine at high output or for a long time.
又、遮へい板等のエンジンルームを区画する構造をボン
ネットかわに付設することも考えられるが、その付設し
た構造によってボンネット重量か大になり、ボンネット
が開閉しにくくなる不具合が有って、この点て遮へい板
をエンジンかわに設けているため、ボンネットを軽量に
てき、開閉操作も楽になるという利点もある。Also, it is possible to attach a structure such as a shielding plate to the bonnet to partition the engine room, but the attached structure increases the weight of the bonnet and makes it difficult to open and close the bonnet. Since the shield plate is placed next to the engine, the bonnet has the advantage of being lighter and easier to open and close.
以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第３図に、乗用型作業車の一例としての乗用型芝刈機を
示している。FIG. 3 shows a riding lawn mower as an example of a riding work vehicle.
この乗用型芝刈機は、前後に夫々左右一対の車輪（１）
、 （２）を備えた乗用型走行機体（３）の下腹部にモ
ーア（４）を着脱自在に装着して構成している。走行機
体（３）の前部のボンネット（５）内にエンジン（６）
を搭載するとともに、このエンジン（６）の動力をミッ
ションケース（７）を介して車輪（２）、 （２）に伝
達して走行可能に構成するとともに、走行機体（３）の
後上部に運転座席（８）、その前方にステアリングハン
ドル（９）を備えた操縦ボックス（１０）を立設して構
成している。This riding lawn mower has a pair of left and right wheels (1) at the front and rear.
, (2), a mower (4) is detachably attached to the lower abdomen of a riding type traveling body (3). The engine (6) is located inside the bonnet (5) at the front of the traveling aircraft (3).
In addition, the power of this engine (6) is transmitted to the wheels (2), (2) via the mission case (7) so that it can run, and the driving body is mounted on the rear upper part of the traveling body (3). It consists of a seat (8) and a control box (10) provided with a steering handle (9) in front of the seat (8).
ボンネット（５）は、第１図に示すように、走行機体（
３）の前端部の横軸芯周りで揺動開閉自在に枢着されて
おり、ボンネット（５）の閉止状態で、ボンネット（５
）の後端縁と、操縦ボックス（１０）の前端縁とか接当
状態で連結されている。As shown in Fig. 1, the bonnet (5) is attached to the traveling aircraft (
It is pivoted around the horizontal axis of the front end of the bonnet (5) so that it can swing open and close freely, and when the bonnet (5) is closed, the
) is connected to the front edge of the control box (10) in a state of contact.
操縦ボックス（１０）の後面部並びに左右両側部には、
エンジン（６）に対する冷却風として外気を取入れるた
めの外気取入口（１１）を形成している。On the rear and left and right sides of the control box (10),
An outside air intake port (11) is formed for taking in outside air as cooling air for the engine (6).
エンジン（６）の後方には、燃料タンク（１２）を設置
しているとともに、前記操縦ボックス（１０）の外気取
入口（１１）から取入れられた外気がエンジン（６）か
わに導入されるように操縦ボックス（１０）とボンネッ
ト（５）との連設部に空気通路を形成している。A fuel tank (12) is installed behind the engine (6), and outside air taken in from the outside air intake port (11) of the control box (10) is introduced into the engine (6). An air passage is formed in the connection between the control box (10) and the bonnet (5).
前記エンジン（６）は、第１図に示すように、強制空冷
式の縦軸型のエンジンであって、その上面に冷却風吸込
口（１３）を備えた状態でカバー部材（１４）で覆われ
ているとともに、そのシリンダヘッド（６Ａ）を前部か
わに位置させた状態で走行機体（３）の機体フレーム（
３Ａ）に搭載している。As shown in FIG. 1, the engine (6) is a forced air-cooled vertical shaft type engine, and is covered with a cover member (14) with a cooling air intake port (13) on its upper surface. and the airframe frame (3) of the traveling aircraft (3) with the cylinder head (6A) positioned at the front side
3A).
そして、エンジン（６）の出力軸（６Ｂ）を下方に延出
しており、この出力軸（６Ｂ）には、ミッションケース
（７）に対するベルト伝動用プーリ（１５）と、電磁ク
ラッチ（１６）を介した状態の、モーア（４）に対する
ベルト伝動用プーリ（１７）とを連設している。エンジ
ン（６）の上部には、強制空冷用の冷却ファン（１８）
を冷却風吸入口（１３）に臨ませて設けている。The output shaft (6B) of the engine (6) extends downward, and a belt transmission pulley (15) and an electromagnetic clutch (16) for transmission case (7) are attached to this output shaft (6B). A belt transmission pulley (17) is connected to the mower (4) via the mower (4). A cooling fan (18) for forced air cooling is installed at the top of the engine (6).
is provided facing the cooling air intake port (13).
そして、ボンネット（５）で外囲されるエンジンルーム
（１９）を、シリンダヘッド（６Ａ）が収容される前室
（１９Ｆ）と、前記冷却風吸入口（１３）か収容される
後室（１９Ｒ）とに区画する遮へい板（２０）か、エン
ジン（６）のカバ一部材（１４）並びに前記機体フレー
ム（３Ａ）に固設している。この遮へい板（２０）は、
第２図に示すように、エンジン（６）のカバ一部材（１
４）の上端前縁部に沿って弯曲した状態で固設され、か
つボンネット（５）の天井部内面（５ａ）とエンジン（
６）上部との間を遮へいするように立設された上辺部（
２０Ａ）と、この上辺部（２０Ａ）の左右側部に連結さ
れかつその下部を機体フレーム（３Ａ）のＬ字形取付部
材（２１）にボルト連結して、ボンネット（５）の左右
の側壁部内面（５Ｂ）、 （５Ｂ）とエンジン（６）の
側部との間を遮へいする側辺部（２０Ｂ）、 （２０Ｂ
）とで構成している。この側辺部（２０Ｂ）、 （２０
Ｂ）は、側面視て、エンジン（６）後方上部より下部か
わほと前方に位置する傾斜し、途中より垂直姿勢となる
ように形成しており、これにより、外気取入口（１１）
からの冷却風がエンジン（６）の両脇を通ってエンジン
（６）上部に導かれる導風路（２２）、 （２２）か形
成されることになる。尚、閉止した状態のボンネット（
５）内面と接当する遮へい板（２０）の外縁部には、シ
ーリング用又は衝撃吸収用の弾性シール材（２３）を付
設している。The engine room (19) surrounded by the bonnet (5) is divided into a front chamber (19F) in which the cylinder head (6A) is housed, and a rear chamber (19R) in which the cooling air intake port (13) is housed. ), or is fixed to the cover member (14) of the engine (6) and the fuselage frame (3A). This shielding plate (20) is
As shown in Fig. 2, the cover member (1) of the engine (6)
4) is fixedly installed in a curved state along the front edge of the upper end, and is connected to the inner surface (5a) of the ceiling part of the bonnet (5) and the engine (
6) The upper part (
20A) and the left and right side parts of this upper side part (20A), and its lower part is bolted to the L-shaped mounting member (21) of the fuselage frame (3A), and the inner surface of the left and right side walls of the bonnet (5) (5B), a side portion (20B) that shields between (5B) and the side of the engine (6), (20B)
). This side part (20B), (20
B) is formed in such a way that when viewed from the side, the engine (6) is inclined from the rear upper part to the lower part of the front, and has a vertical position from the middle.
Air guide passages (22), (22) are formed in which the cooling air from the engine (6) passes through both sides of the engine (6) and is guided to the upper part of the engine (6). In addition, the bonnet in the closed state (
5) An elastic sealing material (23) for sealing or shock absorption is attached to the outer edge of the shielding plate (20) that contacts the inner surface.
尚、図面中、（２４）はエアクリーナである。In the drawing, (24) is an air cleaner.
尚、上記実施例においては、遮へい板（２０）の上辺部
（２０Ａ）を平面視で弯曲した形状に構成したか、第４
図に示すように、平面視て左右方向に沿う直線状に構成
しても良い。In the above embodiment, the upper side (20A) of the shielding plate (20) is configured to have a curved shape in plan view, or
As shown in the figure, it may be configured in a straight line along the left and right direction when viewed from above.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すか、該記入により本発明は添付図面の構成
に限定されるものではない。It should be noted that the present invention is not limited to the structure of the attached drawings by adding numerals in the claims for convenient comparison with the drawings.
図面は本発明に係る乗用型作業車の実施例を示し、第１
図は乗用型芝刈機のエンジンルームを示す一部破断側面
図、第２図は乗用型芝刈機のエンジンルームを示す横断
平面図、第３図は乗用型芝刈機を示す全体側面図、第４
図は別実施例の乗用型芝刈機のエンジンルームを示す横
断平面図である。
（５）・・・・・・ボンネット、（６）・・・・・・エ
ンジン、（６Ａ）・・・・・・シリンダヘッド、（１０
）・・・・・・操縦ボックス、（１１）・・・・・・外
気取入口、（］３）・・・・・・冷却風吸入口、（１９
）・・・・・・エンジンルーム、（２０）・・・・・・
遮へい板、（２０Ａ）・・・・・・上辺部、（２０Ｂ）
・・・・・・側辺部、（２２）・・・・・・導風路。The drawings show an embodiment of the riding type work vehicle according to the present invention, and the first embodiment
Figure 2 is a partially cutaway side view showing the engine room of the riding lawn mower, Figure 2 is a cross-sectional plan view showing the engine room of the riding lawn mower, Figure 3 is an overall side view showing the riding lawn mower, and Figure 4 is a side view showing the engine room of the riding lawn mower.
The figure is a cross-sectional plan view showing the engine room of a riding lawn mower according to another embodiment. (5)...Bonnet, (6)...Engine, (6A)...Cylinder head, (10
)...Control box, (11)...Outside air intake, (]3)...Cooling air intake, (19
)... Engine room, (20)...
Shielding plate, (20A)...Top side, (20B)
... Side part, (22) ... Air guide path.
Claims (1)
リンダヘッド（６Ａ）を位置させた強制空冷式縦軸型の
エンジン（６）を、操縦ボックス（１０）の前方に連設
したボンネツト（５）内に装備するとともに、前記操縦
ボックス（１０）に外気取入口（１１）を形成した乗用
型作業車において、前記ボンネツト（５）で外囲される
エンジンルーム（１９）を、前記シリンダヘッド（６Ａ
）が収容される前室（１９Ｆ）と、エンジン上面の前記
冷却風吸入口（１３）が収容される後室（１９Ｒ）とに
区画する遮へい板（２０）を前記エンジン（６）がわに
固設するとともに、この遮へい板（２０）を、前記ボン
ネツト（５）天井部内面と前記エンジン（６）上部との
間を遮へいする上辺部（２０Ａ）と、前記ボンネツト（
５）側壁部内面と前記エンジン（６）側部との間を遮へ
いする側辺部（２０Ｂ）とで構成し、前記外気取入口（
１１）からの冷却風を前記エンジン（６）の左右両脇を
通って前記エンジン（６）上部に導く導風路（２２）が
前記後室（１９Ｒ）に形成されるように前記遮へい板（
２０）の前記側辺部（２０Ｂ）を形成してあることを特
徴とする乗用型作業車。A forced air-cooled vertical shaft type engine (6) equipped with a cooling air inlet (13) on the top surface and a cylinder head (6A) located at the front is connected to the bonnet (10) in front of the control box (10). 5) In a riding work vehicle having an outside air intake (11) formed in the control box (10), the engine compartment (19) surrounded by the bonnet (5) is connected to the cylinder head. (6A
) is housed in the front chamber (19F) and the rear chamber (19R) is housed in the cooling air intake port (13) on the top of the engine. This shielding plate (20) has an upper side part (20A) that shields between the inner surface of the ceiling part of the bonnet (5) and the upper part of the engine (6), and the shielding plate (20).
5) It is composed of a side part (20B) that shields between the inner surface of the side wall part and the side part of the engine (6), and the outside air intake port (
The shielding plate (
20) A riding-type work vehicle characterized in that the side portion (20B) is formed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2294031A JP2661787B2 (en) | 1990-10-30 | 1990-10-30 | Passenger work vehicle |
| US07/784,549 US5207187A (en) | 1990-07-04 | 1991-10-29 | Air cooling system for a vertical engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2294031A JP2661787B2 (en) | 1990-10-30 | 1990-10-30 | Passenger work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04166422A true JPH04166422A (en) | 1992-06-12 |
| JP2661787B2 JP2661787B2 (en) | 1997-10-08 |
Family
ID=17802371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2294031A Expired - Fee Related JP2661787B2 (en) | 1990-07-04 | 1990-10-30 | Passenger work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2661787B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5490574A (en) * | 1994-01-17 | 1996-02-13 | Kubota Corporation | Hood having intake openings for drawing air for a radiator and an engine |
| US6631607B1 (en) * | 1999-09-16 | 2003-10-14 | Mtd Products Inc | Zero turn tractor with front mounted engine |
| CN103481767A (en) * | 2012-06-13 | 2014-01-01 | 铃木株式会社 | Fuel cell apparatus for vehicles |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0281717A (en) * | 1988-09-16 | 1990-03-22 | Yamaha Motor Co Ltd | Cooling device for engine |
-
1990
- 1990-10-30 JP JP2294031A patent/JP2661787B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0281717A (en) * | 1988-09-16 | 1990-03-22 | Yamaha Motor Co Ltd | Cooling device for engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5490574A (en) * | 1994-01-17 | 1996-02-13 | Kubota Corporation | Hood having intake openings for drawing air for a radiator and an engine |
| US6631607B1 (en) * | 1999-09-16 | 2003-10-14 | Mtd Products Inc | Zero turn tractor with front mounted engine |
| CN103481767A (en) * | 2012-06-13 | 2014-01-01 | 铃木株式会社 | Fuel cell apparatus for vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2661787B2 (en) | 1997-10-08 |
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