GB2564091A - Variable down force motorcycle fairing device - Google Patents
Variable down force motorcycle fairing device Download PDFInfo
- Publication number
- GB2564091A GB2564091A GB1709409.5A GB201709409A GB2564091A GB 2564091 A GB2564091 A GB 2564091A GB 201709409 A GB201709409 A GB 201709409A GB 2564091 A GB2564091 A GB 2564091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- down force
- outlet
- motorcycle
- inlet
- variable down
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J17/00—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
- B62J17/10—Ventilation or air guiding devices forming part of fairings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/02—Influencing flow of fluids in pipes or conduits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
A motorcycle fairing down force device 3 comprising a tube with an inlet passage 6, outlet passage 7 and a bend 8, which when fitted to a motorcycle varies down force at different speeds to maintain optimal contact between the front 9 or rear 10 wheel tyre and the road or ground 11. The air enters the tubes inlet chamber ideally at an angle of 180 degrees or horizontally at standstill or constant velocity, and under acceleration or deceleration air is forced to accelerate vertically around the bend, ideally at 90 degrees, and out of the outlet. The angle between the inlet and outlet is variable dependent on acceleration and braking loads. The device may also comprise a valve (25, Fig 5) which adjusts the flow of air to produce a variable air flow and adjust down force as desired.
Description
Variable Down Force Motorcycle Fairing Device
Description of Invention
Field of the Invention
The present invention relates to a Variable Down Force Motorcycle Fairing Device which controls airflow around a motorcycle in such a way that the down force can be varied in relation to throttle, braking loads and riding parameters.
Statements of Invention
Accordingly, the present invention is directed, but not solely to a motorcycle fairing assembly, said fairing consisting of fixed panels relative to the motorcycle frame, said fixed panels containing an air duct, said air duct comprises of an inlet with an inlet passage and an outlet with an outlet passage. The angle between said inlet and said outlet is variable dependent upon acceleration and braking loads. Said inlet and said outlet can be positioned either internal or external of said panels.
Preferably the angle between said inlet passage and the direction of travel is 180°.
Preferably the angle between said inlet passage and outlet passage tends towards zero when the motorcycle is at a constant speed.
Preferably the angle between said inlet and outlet is 90° when the motorcycle is accelerating at the point by which contact between the front wheel and the ground is being diminished.
Preferably the angle between said inlet and said outlet is 90° when the motorcycle is decelerating at the point by which contact between the rear wheel and the ground is being lost.
Brief Description of the Drawings
The accompanying drawings are as follows:
Figure 1 is a side view of a first embodiment of the Variable Down Force Motorcycle Fairing Device in accordance with the present invention;
Figure 2 is a detailed view of the first embodiment of the invention showing the design details of the Variable Down Force Motorcycle Fairing Device;
Figure 3 is a detailed view of the first embodiment of the invention showing the design details of the Variable Down Force Motorcycle Fairing Device whilst the motorcycle is at a constant speed;
Figure 4 is a detailed view of the second embodiment of the invention showing an alternate design of the Variable Down Force Motorcycle Fairing Device incorporating an un-shrouded design;
Figure 5 is a detailed view of the third embodiment of the invention showing an alternate design of the Variable Down Force Motorcycle Fairing Device incorporating an additional outlet whereby the direction of airflow is dictated by a valve whilst the motorcycle is accelerating or decelerating.
Figure 6 is a detailed view of the first embodiment of the invention showing an alternate design of the Variable Down Force Motorcycle Fairing Device incorporating an additional outlet whereby the direction of airflow is dictated by a valve whilst the motorcycle is at a constant speed.
Detailed Description of the Invention
The invention will now be described, by way of examples only, with reference to the accompanying drawings.
Referring to Fig. 1 of the accompanying drawings, there is shown a motorcycle (1) which has a fairing (2). Said fairing holds a variable down force device (3), said device has an inlet (4) and outlet (5). Said device (3) has an inlet passage (6) and an outlet passage (7). As air flow due to velocity enters inlet (4) it travels down the inlet passage (6) and is forced to accelerate around the bend (8) passing through outlet passage (7) and out of outlet (5). Due to the mass transfer forces exerted on the bend (8) reaction forces between the front wheel (9) and rear wheel (10) are created with the road (11).
Referring to Fig.2 of the accompanying drawings, there is shown a detailed view of the first embodiment of the invention (Fig.1). Said bend (12) has an angle (Θ) which is variable upon the loads experienced by acceleration and deceleration. Varying said angle (Θ) varies the down force forces created.
Referring to Fig. 3 of the accompanying drawings, there is shown a detailed view of the first embodiment of the invention whilst the motorcycle is at a constant speed. Air enters said inlet (13) at a constant speed and passes through said inlet passage (14). Said bend angle (Θ) is tending to zero, as a result as the air passes through outlet passage (15) and no horizontal reaction forces are experienced as the air passes through said outlet (16).
Referring to Fig. 4 of the accompanying drawings, there is shown the second embodiment of the design. Said inlet (17) is designed in such a way that the side of said inlet passage (18), said bend (19), said outlet passage (20) and said outlet (21) is removed as shown (22).
Referring to Fig. 5 of the accompanying drawings, there is shown the third embodiment of the design whilst the motorcycle is accelerating. Said inlet (23) leads air flow through said inlet passage (24). Said valve (25) pivoted about said pivot (26) deflects the airflow into said outlet passage (27), the airflow is then passed through said outlet (28).
Referring to Fig. 6 of the accompanying drawings, there is shown the third embodiment of the design whilst the motorcycle is at a constant speed. Said inlet (29) leads air flow through said inlet passage (30), and past said valve (31) pivoted about said pivot (32) and into said outlet passage (33), leaving through said outlet (34).
Claims (15)
1. A motorcycle incorporating 1 or more Variable Down Force Motorcycle Fairing Devices comprising:
a inlet component;
a inlet passaged;
a bend;
a outlet passage;
a outlet;
said inlet and outlet may or may not be the same area.
2. A Variable Down Force Motorcycle Fairing Device according to claim 1 wherein the resultant force passed through the wheels and onto the ground is increased whilst the motorcycle is accelerating or decelerating.
3. A Variable Down Force Motorcycle Fairing Device according to claim 2 wherein the variable down force design creates no vertical component force whilst at a constant speed.
4. A Variable Down Force Motorcycle Fairing Device according to claim 2 wherein a second outlet is incorporated with a valve or deflector diverts airflow to either be expelled from outlet 1 or outlet 2 thus changing the vertical loading created and subsequently passed through the tyres onto the ground.
5.
A Variable Down Force Motorcycle Fairing Device according to claim 1 whereby the device is external to the main body of the fairing.
A Variable Down Force Motorcycle Fairing Device according to claim 1 whereby the device is internal to the main body of the fairing.
7.
A Variable Down Force Motorcycle Fairing Device according to claim whereby said inlet passage, said bend and outlet passage are un-shrouded.
6.
8. A Variable Down Force Motorcycle Fairing Device according to claim 4 whereby said inlet passage, said bend and outlet passage are un-shrouded.
9. A Variable Down Force Motorcycle Fairing Device according to claim 1 whereby said inlet and said inlet passage are not perpendicular to each other.
10. A Variable Down Force Motorcycle Fairing Device according to claim 1 whereby said outlet and said outlet passage are not perpendicular to each other.
11. A Variable Down Force Motorcycle Fairing Device according to claim 4 whereby said inlet and said inlet passage are not perpendicular to each other.
12. A Variable Down Force Motorcycle Fairing Device according to claim 4 whereby said outlet and said outlet passages are not perpendicular to each other.
13. A Variable Down Force Motorcycle Fairing Device according to claim 1 whereby the device is used on a motorcycle with no fairing.
14. A Variable Down Force Motorcycle Fairing Device according to claim 4 whereby the device is used on a motorcycle with no fairing.
15. A Variable Down Force Motorcycle Fairing Device according to claim 1 whereby the inlet and out are not the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1709409.5A GB2564091A (en) | 2017-06-13 | 2017-06-13 | Variable down force motorcycle fairing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1709409.5A GB2564091A (en) | 2017-06-13 | 2017-06-13 | Variable down force motorcycle fairing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201709409D0 GB201709409D0 (en) | 2017-07-26 |
| GB2564091A true GB2564091A (en) | 2019-01-09 |
Family
ID=59358290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1709409.5A Withdrawn GB2564091A (en) | 2017-06-13 | 2017-06-13 | Variable down force motorcycle fairing device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2564091A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000060243A1 (en) * | 1999-04-02 | 2000-10-12 | Marugo Gomu Kogyo Co., Ltd | Bent tube |
| JP2002302083A (en) * | 2001-04-04 | 2002-10-15 | Honda Motor Co Ltd | Air intake port structure for motorcycle |
| US20080185865A1 (en) * | 2007-02-06 | 2008-08-07 | Hisashi Matsuo | Windshield device, and cool airflow device for saddle ride type vehicle |
| US20120228046A1 (en) * | 2011-03-07 | 2012-09-13 | Honda Motor Co., Ltd. | Saddle-type vehicle |
| EP3222505A1 (en) * | 2016-03-24 | 2017-09-27 | Honda Motor Co., Ltd. | Front structure of saddle ride type vehicle |
-
2017
- 2017-06-13 GB GB1709409.5A patent/GB2564091A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000060243A1 (en) * | 1999-04-02 | 2000-10-12 | Marugo Gomu Kogyo Co., Ltd | Bent tube |
| JP2002302083A (en) * | 2001-04-04 | 2002-10-15 | Honda Motor Co Ltd | Air intake port structure for motorcycle |
| US20080185865A1 (en) * | 2007-02-06 | 2008-08-07 | Hisashi Matsuo | Windshield device, and cool airflow device for saddle ride type vehicle |
| US20120228046A1 (en) * | 2011-03-07 | 2012-09-13 | Honda Motor Co., Ltd. | Saddle-type vehicle |
| EP3222505A1 (en) * | 2016-03-24 | 2017-09-27 | Honda Motor Co., Ltd. | Front structure of saddle ride type vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201709409D0 (en) | 2017-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |