JPH0413193B2 - - Google Patents
Info
- Publication number
- JPH0413193B2 JPH0413193B2 JP57052333A JP5233382A JPH0413193B2 JP H0413193 B2 JPH0413193 B2 JP H0413193B2 JP 57052333 A JP57052333 A JP 57052333A JP 5233382 A JP5233382 A JP 5233382A JP H0413193 B2 JPH0413193 B2 JP H0413193B2
- Authority
- JP
- Japan
- Prior art keywords
- radiator
- fuel tank
- engine
- mud
- cylinder
- 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.)
- Expired - Lifetime
Links
- 239000002828 fuel tank Substances 0.000 claims description 17
- 239000000446 fuel Substances 0.000 claims 2
- 230000005484 gravity Effects 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000006200 vaporizer Substances 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
- F01P3/00—Liquid cooling
- F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
-
- 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
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Description
【発明の詳細な説明】
この発明は、水冷式エンジンを備えた自動二輪
車に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motorcycle equipped with a water-cooled engine.
オフロード用の自動二輪車においても、出力性
能を向上させるために水冷式エンジンを採用する
ものがある。この場合エンジンの冷却水を冷やす
ラジエタが必要となり、このラジエタの配置場所
が従来より種々提案されている。 Some off-road motorcycles also employ water-cooled engines to improve output performance. In this case, a radiator is required to cool the engine cooling water, and various locations for arranging this radiator have been proposed.
燃料タンクの前端付近の左右側面に、縦長のラ
ジエタを配置したものでは、ラジエタの位置が高
くなり、冷却水を導くパイプが長くなるという不
都合がある。またステアリング・ヘツドパイプか
ら後方斜め下方へ延びるダウンチユーブにラジエ
タを取付けたものでは、前輪が跳ね上げる泥水が
ラジエタに付着しやすく、ラジエタの放熱性能が
低下するという不都合が生じる。さらにステアリ
ング・ヘツドパイプ前方の左右一対のフロントフ
オークにラジエタを取付けたものもあるが、この
場合はラジエタの取付位置が高くなり冷却水の配
管が長くなるだけでなく、操向ハンドルの取廻し
が重くなるという問題もあつた。なおこれらの従
来のラジエタ取付け位置は、いずれもエンジン付
近に通常位置する車体全体の重心から遠いため、
この重心廻りの慣性モーメントが増大する。この
ため特に急激なハンドル操作を要するオフロード
用の自動二輪車では、操縦性も悪化するという問
題があつた。 If a vertically elongated radiator is placed on the left and right sides near the front end of the fuel tank, the radiator will be located higher and the pipes for guiding the cooling water will be longer. Furthermore, in the case where the radiator is attached to a down tube that extends diagonally backward and downward from the steering head pipe, muddy water splashed up by the front wheels tends to adhere to the radiator, resulting in the inconvenience that the heat dissipation performance of the radiator deteriorates. Furthermore, some models have a radiator attached to the left and right front forks in front of the steering head pipe, but in this case, the radiator is not only mounted higher and the cooling water piping becomes longer, but the steering wheel is also difficult to maneuver. There was also the issue of becoming. Note that these conventional radiator mounting positions are far from the center of gravity of the entire vehicle body, which is usually located near the engine.
The moment of inertia around this center of gravity increases. For this reason, especially in off-road motorcycles that require sudden steering operations, there has been a problem in that the maneuverability is also deteriorated.
本発明はこのような事情に鑑みなされたもので
あり、冷却水の配管を短かくすることができ軽量
化に適し、ラジエタに泥水が付着しにくく、また
操向ハンドルの取廻しを軽くでき、さらには車体
全体の慣性モーメントを小さくして操縦性を向上
させることが可能な自動二輪車を提供することを
目的とする。 The present invention has been developed in view of these circumstances, and is suitable for reducing weight by making the cooling water piping shorter, making it difficult for muddy water to adhere to the radiator, and making it easier to maneuver the steering handle. A further object of the present invention is to provide a motorcycle that can improve maneuverability by reducing the moment of inertia of the entire vehicle body.
本発明はこのような目的を達成すため、ステア
リング・ヘツドパイプの後方に取付けられた燃料
タンクと、この燃料タンクの下方に塔載された水
冷式エンジンとを有する自動二輪車において、前
記エンジンのシリンダをクランクケースの前方に
強く前傾させて前記燃料タンクとエンジンとの間
に前方へ開く空間を形成し、前記燃料タンクとク
ランクケースとの間にラジエタを立設し、このラ
ジエタの側方から前記シリンダの上側方へ延出す
る左右一対の側板を設けたものである。以下図示
の実施例に基づいて、本発明を詳細に説明する。 In order to achieve such an object, the present invention provides a motorcycle having a fuel tank attached to the rear of the steering head pipe and a water-cooled engine mounted below the fuel tank. The crankcase is strongly tilted forward to form a space that opens forward between the fuel tank and the engine, and a radiator is installed upright between the fuel tank and the crankcase. A pair of left and right side plates are provided that extend upward from the cylinder. The present invention will be explained in detail below based on the illustrated embodiments.
第１図は本発明の一実施例を示す側面図、第２
図はその要部の平面図である。第１図において符
号１０は車体フレームであり、このフレーム１０
はステアリング・ヘツドパイプ１２と、このヘツ
ドパイプ１２から後方へ延びるタンクレール１４
と、同じく後方斜め下方へ延びるダウンチユーブ
１６と、シートピラーチユーブ１８と、バツクス
テー２０とを有する。２２はリヤアームであつ
て、その前端がフレーム１０に軸支され、その後
端に後輪２４が保持されている。２６はリヤクツ
シヨンユニツトであつて、後輪２４を上下動可能
に弾性的に支持している。 Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure is a plan view of the main part. In FIG. 1, reference numeral 10 is a vehicle body frame, and this frame 10
is a steering head pipe 12 and a tank rail 14 extending rearward from this head pipe 12.
It also has a down tube 16 extending rearward and diagonally downward, a seat pillar tube 18, and a back stay 20. 22 is a rear arm whose front end is pivotally supported by the frame 10, and whose rear end holds a rear wheel 24. Reference numeral 26 is a rear action unit that elastically supports the rear wheel 24 so as to be movable up and down.
２８，２８ａ，２８ｂは左右一対のフロントフ
オークであり、その上端はヘツドパイプ１２へブ
ラケツト３０，３２によつて取付けられ、またせ
の下端には前輪３４が保持されている。３６は操
向ハンドルである。 Reference numerals 28, 28a, and 28b are a pair of left and right front forks, the upper ends of which are attached to the head pipe 12 by brackets 30, 32, and a front wheel 34 is held at the lower end of the overlapping. 36 is a steering handle.
３８は、前記ヘツドパイプ１２後方のタンクレ
ール１４にまたがるように取付けられた燃料タン
クである。この燃料タンク３８の前部下面は第１
図で示すように斜めに形成され、走行風をこの燃
料タンク３８の下方へ導く。３９は着座シートで
ある。 Reference numeral 38 denotes a fuel tank installed so as to straddle the tank rail 14 behind the head pipe 12. The front lower surface of this fuel tank 38 is located at the first
As shown in the figure, it is formed obliquely and guides the wind from the vehicle downward. 39 is a seating seat.
４０は水冷式エンジンである。このエンジン４
０はクランクケース４０ａの前方に強く前傾した
シリンダ４０ｂを備え、前記ダウンチユーブ１６
とシートピラーチユーブ１８との間に塔載されて
いる。この結果燃料タンク３８とエンジン４０と
の間に、前方へ開いた大きい空間が形成されてい
る。なおシリンダ４０ｂは、水平に前方へ突出さ
せてもよい。４２は気化器、４４は空気清浄器、
４６は排気管である。 40 is a water-cooled engine. This engine 4
0 is equipped with a cylinder 40b that is strongly tilted forward in front of the crankcase 40a, and the down tube 16
and seat pillar tube 18. As a result, a large space that opens forward is formed between the fuel tank 38 and the engine 40. Note that the cylinder 40b may be horizontally projected forward. 42 is a vaporizer, 44 is an air purifier,
46 is an exhaust pipe.
４８はエンジン４０の冷却水を走行風によつて
冷却するラジエタである。このラジエタ４８は燃
料タンク３８の中央付近の下面と、クランクケー
ス４０ａとの間に僅かに前傾するように立設され
ている。このためラジエタ４８とダウンチューブ
１６の下降傾斜部分との間に大きい間隙が形成さ
れる。５０はこのラジエタ４８の前方に位置する
ようダウンチユーブ１６の前面に固定された導風
板であり、この導風板５０には、走行風をラジエ
タ４８に導くよろい窓状のルーバが横向きに形成
されている。また５２，５２ａ，５２ｂは左右一
対の防泥パネルであり、導風板５０の左右側縁と
ラジエタ４８の左右側縁をつなぐように取付けら
れている。この防泥パネル５２には縦のルーバー
が形成され、走行風をラジエタ４８に取込むよう
になつている。なお第１図でＧは車体全体の重心
を示し、この重心Ｇはクランクケース４０ａの上
部付近に位置し、ラジエタ４８はこの重心Ｇ上に
位置する。 48 is a radiator that cools the cooling water of the engine 40 by the wind from the vehicle. The radiator 48 is erected between the lower surface near the center of the fuel tank 38 and the crankcase 40a so as to be slightly inclined forward. Therefore, a large gap is formed between the radiator 48 and the downwardly sloped portion of the down tube 16. Reference numeral 50 denotes a baffle plate fixed to the front surface of the down tube 16 so as to be located in front of the radiator 48, and the baffle plate 50 has a sideways formed louver in the form of a window that guides the traveling wind to the radiator 48. has been done. Moreover, 52, 52a, and 52b are a pair of left and right mud-proof panels, which are attached so as to connect the left and right side edges of the baffle plate 50 and the left and right side edges of the radiator 48. This anti-mud panel 52 has a vertical louver formed therein to draw wind from the vehicle into the radiator 48. In FIG. 1, G indicates the center of gravity of the entire vehicle body, and this center of gravity G is located near the top of the crankcase 40a, and the radiator 48 is located on this center of gravity G.
次にこの実施例の作用を説明する。運転者は第
１図に仮想線で示すようにシート３９に着座し、
この時両足のひざがラジエタ４８の側縁付近に位
置する。走行中においては、走行風の一部は燃料
タンク３８の前部下面の斜面とシリンダ４０ｂと
の間の広い開口から導風板５０を通つてラジエタ
４８に当り、また走行風の一部は防泥パネル５２
を通つて車体側面からラジエタ４８に当る（第２
図参照）。この実施例では運転者の足がラジエタ
４８側方で導風板として作用し、空気の流れを取
込むので、ラジエタ４８の冷却性は一層向上す
る。導風板５０は、前輪３４が跳ね上げる泥を除
去する作用を持ち、また防泥パネル５２は側方か
らラジエタ４８に泥が当るのを防ぐ。特に防泥パ
ネル５２には縦のルーパが形成されているので、
このパネル５２に付着した泥はエンジン振動によ
つて容易に滑落する。またラジエタ４８は重心Ｇ
付近に取付けられているので、ラジエタ４８を装
着したことによる慣性モーメントの増加は少な
く、操縦性能も悪化しない。 Next, the operation of this embodiment will be explained. The driver is seated on the seat 39 as shown by the imaginary line in FIG.
At this time, the knees of both feet are located near the side edges of the radiator 48. While driving, a portion of the airflow passes through the baffle plate 50 from the wide opening between the front lower surface of the fuel tank 38 and the cylinder 40b and hits the radiator 48, and a portion of the airflow also hits the radiator 48. mud panel 52
It hits the radiator 48 from the side of the vehicle through the
(see figure). In this embodiment, the driver's feet act as a baffle plate on the side of the radiator 48 and take in the air flow, so that the cooling performance of the radiator 48 is further improved. The baffle plate 50 has the function of removing mud thrown up by the front wheels 34, and the mud prevention panel 52 prevents mud from hitting the radiator 48 from the sides. In particular, since a vertical looper is formed in the anti-mud panel 52,
The mud adhering to the panel 52 easily slides off due to engine vibration. Also, the radiator 48 has a center of gravity G
Since the radiator 48 is installed nearby, the moment of inertia increases little due to the installation of the radiator 48, and maneuverability does not deteriorate.
この実施例では導風板を設けたので、泥がラジ
エタ４８に一層付着しにくくなるという効果が生
じるが、これら導風板を省いても、前輪３８が跳
ね上げる泥はシリンダ４０ｂによつて阻止される
ので、泥がラジエタ４８に付着しにくく、所期の
目的を達成できる。またこの実施例では側板とし
て防泥パネル５２を用い、ここにルーバを設けた
ので走行風をこのルーバを通してラジエタ４８に
導きラジエタ４８の冷却効果を一層向上できる。 In this embodiment, the air guide plate is provided, which has the effect of making it more difficult for mud to adhere to the radiator 48. However, even if these air guide plates are omitted, the mud thrown up by the front wheels 38 will be blocked by the cylinder 40b. Therefore, it is difficult for mud to adhere to the radiator 48, and the desired purpose can be achieved. Further, in this embodiment, the anti-mud panel 52 is used as the side plate, and a louver is provided there, so that the wind from the vehicle is guided to the radiator 48 through the louver, thereby further improving the cooling effect of the radiator 48.
本発明は以上のように燃料タンクとエンジンと
の間に前方へ開いた空間を形成し、燃料タンクと
クランクケースとの間にラジエタを立設したので
ラジエタの配管が非常に短かくなり軽量化が図れ
る。またこのラジエタの側方にはシリンダの上側
方へ向つてのびる側板を設けたので、燃料タンク
とシリンダとの間から前方に開いた空間に入つた
走行風は、側方へ逃げることなくラジエタ前面に
導かれる。このためラジエタの冷却性能が向上す
る。さらにラジエタは車体の重心付近に位置する
ことになるので、車体全体の重心が高くなること
もなく、慣性モーメントが増大して操縦性が悪化
することも、ハンドル操作が重くなることもな
い。さらに前輪が跳ね上げる泥はシリンダにより
阻止されるので、ラジエタに泥は付着しにくくな
る。 As described above, the present invention forms a space that opens forward between the fuel tank and the engine, and the radiator is installed upright between the fuel tank and the crankcase, making the radiator piping extremely short and lightweight. can be achieved. In addition, a side plate is installed on the side of this radiator that extends toward the upper side of the cylinder, so that the wind that enters the space that is open to the front from between the fuel tank and the cylinder is directed to the front of the radiator without escaping to the side. guided by. This improves the cooling performance of the radiator. Furthermore, since the radiator is located near the center of gravity of the vehicle, the center of gravity of the entire vehicle does not become high, and the moment of inertia does not increase, resulting in poor maneuverability or heavy steering operation. Furthermore, the mud thrown up by the front wheels is blocked by the cylinder, making it difficult for mud to adhere to the radiator.
第１図は本発明の一実施例を示す側面図、第２
図はその要部の平面図である。
１２……ステアリング・ヘツドパイプ、３８…
…燃料タンク、４０……水冷式エンジン、４０ａ
……クランクケース、４０ｂ……シリンダ、４８
……ラジエタ、５２……側板としての防泥パネ
ル。
Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure is a plan view of the main part. 12... Steering head pipe, 38...
...Fuel tank, 40...Water-cooled engine, 40a
...Crankcase, 40b...Cylinder, 48
...Radiator, 52...Mud-proof panel as side plate.
Claims (1)
られた燃料タンクと、この燃料タンクの下方に搭
載された水冷式エンジンとを有する自動二輪車に
おいて、前記エンジンのシリンダをクランクケー
スの前方に強く前傾させて前記燃料タンクエンジ
ンとの間に前方へ開く空間を形成し、前記燃料タ
ンクとクランクケースとの間にラジエタを立設
し、このラジエタの側方から前記シリンダの上側
方へ延出する左右一対の側板を設けたことを特徴
とする自動二輪車。1. In a motorcycle having a fuel tank attached to the rear of the steering head pipe and a water-cooled engine mounted below the fuel tank, the cylinder of the engine is tilted strongly forward to the front of the crankcase to fuel the fuel. A space that opens forward is formed between the tank and the engine, a radiator is installed upright between the fuel tank and the crankcase, and a pair of left and right side plates extend from the sides of the radiator to the upper side of the cylinder. A motorcycle characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57052333A JPS58170626A (en) | 1982-04-01 | 1982-04-01 | Autobicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57052333A JPS58170626A (en) | 1982-04-01 | 1982-04-01 | Autobicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58170626A JPS58170626A (en) | 1983-10-07 |
| JPH0413193B2 true JPH0413193B2 (en) | 1992-03-06 |
Family
ID=12911863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57052333A Granted JPS58170626A (en) | 1982-04-01 | 1982-04-01 | Autobicycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58170626A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59115819U (en) * | 1983-01-25 | 1984-08-04 | スズキ株式会社 | Motorcycle radiator air guide device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853210Y2 (en) * | 1979-04-17 | 1983-12-03 | 本田技研工業株式会社 | Radiator device for motorcycles |
-
1982
- 1982-04-01 JP JP57052333A patent/JPS58170626A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58170626A (en) | 1983-10-07 |
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