WO2023152758A1 - A two-wheeled vehicle - Google Patents
A two-wheeled vehicle Download PDFInfo
- Publication number
- WO2023152758A1 WO2023152758A1 PCT/IN2022/050982 IN2022050982W WO2023152758A1 WO 2023152758 A1 WO2023152758 A1 WO 2023152758A1 IN 2022050982 W IN2022050982 W IN 2022050982W WO 2023152758 A1 WO2023152758 A1 WO 2023152758A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lean angle
- vehicle
- section
- angle sensor
- wheeled vehicle
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 16
- 239000000446 fuel Substances 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 8
- 239000003086 colorant Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 description 6
- 239000000725 suspension Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
- B62J45/415—Inclination sensors
- B62J45/4151—Inclination sensors for sensing lateral inclination of the cycle
-
- 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
- B62K11/02—Frames
- B62K11/04—Frames characterised by the engine being between front and rear wheels
Definitions
- the present invention relates to a two-wheeled vehicle. More particularly, the present invention relates to mounting of a lean angle sensor on the two-wheeled vehicle. BACKGROUND OF THE INVENTION
- Two-wheeled vehicles such as motorcycles, are generally provided with a lean angle sensor which detects a lean angle value of the vehicle in real time.
- Lean angle is an angle at which the vehicle is leaned at corners or while turning.
- the laid- down orientation of the vehicle may adversely affect an engine of the vehicle, safety of a rider and cause various issues such as fuel spilling from a fuel tank of the vehicle.
- the lean angle sensor detects the lean angle value of the vehicle and the same is displayed to the rider. Display of lean angle value to the rider helps him to assess his riding performance as well as avoid instances such as vehicle roll-over.
- the lean angle sensor is located away from a center of gravity of the vehicle. Further, the lean angle sensor detects only a tilt of the vehicle. Tilt is a rotation around a longitudinal axis of the vehicle. The calculation of the lean angle value, based only on the tilt of the vehicle, is not always accurate when the lean angle sensor is located away from the center of gravity of the vehicle. For example, during uphill or downhill conditions, the calculation of the lean angle should also include yaw and/or pitch of the vehicle. Yaw is rotation of the vehicle about a vertical axis. Pitch is rotation of the vehicle about a transverse axis.
- the existing art teaches calibration of the lean angle sensor to include the yaw and/or pitch of the vehicle.
- Such calibration of the lean angle sensors include setting an offset to compensate for the yaw and/or pitch of the vehicle.
- such calibrations are complex and even after such calibrations the lean angle value obtained by the lean angle sensor may not be accurate.
- a two-wheeled vehicle having a lean angle sensor comprising a head pipe and a main tube.
- the main tube extends rearwardly from the head pipe.
- the main tube has a first section which extends rearwardly from the head pipe and a second section which extends rearwardly and downwardly from the first section.
- the two-wheeled vehicle further comprises a lean angle sensor configured to detect a lean angle value of the vehicle.
- the lean angle sensor is mounted on the second section of the main tube and is communicatively coupled to an Electronic Control Unit (ECU).
- ECU Electronic Control Unit
- the detection of the lean angle corresponds to detection of tilt of the vehicle.
- Tilt is a rotation around a longitudinal axis of the vehicle.
- the lean angle sensor is mounted on the second section of the main tube in a region behind an engine of the vehicle in a vehicle front-rear direction and above an engine mounting bracket in a vehicle upward-downward direction such that the lean angle sensor is positioned near a center of gravity of the vehicle.
- the two-wheeled vehicle comprises a mounting unit for mounting the lean angle sensor on the second section of the main tube.
- the mounting unit comprises a vertical member and a horizonal member.
- the vertical member extends between a first end and a second end in a vehicle upward downward direction and is configured such that the lean angle sensor can be mounted on the vertical member.
- the horizontal member extends from the first end of the vertical member in a direction towards the second section of the main tube.
- the horizontal member is configured to be fixedly or detachably attached to the second section of the main tube.
- the present invention discloses a method for detecting a lean angle of a two-wheeled vehicle.
- the method comprises a step of receiving, by an electronic control unit, a lean angle value of the vehicle from a lean angle sensor.
- the lean angle sensor is mounted on a second section of a main tube.
- the main tube extends rearwardly from a head pipe of the vehicle and comprises a first section and the second section.
- the first section extends rearwardly from the head pipe and the second section extends rearwardly and downwardly from the first section of the main tube.
- the method further comprises a step of comparing, by the electronic control unit, the lean angle value of the vehicle with a pre-determined value.
- the method further comprises a step of performing, by the electronic control unit, a first action when the lean angle value is greater than the pre-determined value and a second action when the lean angle value is less than the pre-determined value.
- the first action comprises one or more of the following: (i) disabling one or more actuators responsible for mobility of the vehicle in a vehicle static condition or in a vehicle dynamic condition, (ii) transmitting the lean angle value to a speedometer which displays the lean angle value using one or more first colors, (iii) providing a haptic feedback to a driver of the vehicle, (iv) generating an audio alarm.
- the second action comprises transmitting the lean angle value to the speedometer which displays the lean angle of the vehicle using one or more second colors.
- the one or more actuators is an ignition switch of the vehicle and/or a fuel injection system.
- the haptic feedback is a vibration provided to a handlebar of the vehicle in a region where the driver grips the handlebar
- Figure 1 illustrates a two-wheeled vehicle, in accordance with an embodiment of the present invention.
- Figure 2 illustrate a frame structure of the vehicle and a lean angle sensor mounted on the frame structure, in accordance with an embodiment of the present invention.
- Figure 3 illustrates a position of the lean angle sensor with respect to the engine and the engine mounting bracket, in accordance with an embodiment of the present invention.
- Figure 4 illustrates a mounting unit for mounting the lean angle sensor on the main tube, in accordance with an embodiment of the present invention.
- Figure 5 illustrates a method for detecting the lean angle of the twowheeled vehicle, in accordance with an embodiment of the present invention.
- a longitudinal axis refers to a front to rear axis relative to a two-wheeled vehicle, defining a vehicle longitudinal direction while a lateral/transverse axis refers to a side to side, or left to right axis relative to the two-wheeled vehicle, defining a vehicle lateral/width direction.
- Arrows provided in the top right corner of figures depicts direction with respect to the two-wheeled vehicle, wherein an arrow F denotes front direction, an arrow R indicates rearward direction, an arrow UP denotes upward direction, an arrow DW denoted downward direction, as and where applicable. Also, it is to be understood that the phraseology and terminology used herein is only for the purpose of description and should not be regarded as limiting.
- Figure 1 illustrates a two-wheeled vehicle 10, in accordance with an embodiment of the present invention.
- the two-wheeled vehicle 10 comprises a frame structure 11 (shown in Figure 2) to support different parts of the vehicle 10.
- a head tube 12 is provided at a front end of said frame structure 11.
- the head tube 12 supports a steering shaft (not shown) rotatably in a certain range.
- a handlebar 20 is rotatably connected to the steering shaft .
- the handlebar 20 is used to steer the vehicle 10 and is connected to a front wheel 21 through a front fork assembly 23.
- the front fork assembly 23 in turn is connected to the handlebar 20 by means of a pair of upper and lower brackets (not shown).
- the front fork assembly 23 is further supported partially on a front fender 22 and is connected to the front wheel 21.
- An upper portion of the front wheel 21 is covered by the front fender 22 which prevents mud and water from getting deflected towards an upper portion of the front fork assembly 23.
- a fuel tank 24 is arranged immediately behind the handlebar 20 and is disposed over a main tube 13 of the frame structure 11 and above an engine 25 such as an internal combustion engine.
- the fuel tank 24 constituting a part of a fuel supply system supplies fuel to the engine 25 through the fuel pump (not shown) which also forms a part of said supply system.
- the fuel tank 24 supplies fuel to the engine 25 through a carburettor (not shown).
- a seat 30 is placed behind the fuel tank 24.
- the seat 30 comprises a front rider portion and rear pillion portion.
- the front rider portion and the rear pillion portion are provided as separate seat portions.
- the front rider portion and the rear pillion portion are provided as a single seat portion.
- a headlamp unit 31 and a turn signal lamp unit 32 are provided in a front portion of the vehicle 10.
- the headlamp unit 31 and the turn signal lamp unit 32 are housed in a headlamp housing assembly 33.
- the safety of said two-wheeled vehicle 10 is further improved by providing a lean angle sensor 50 (Refer to Figure 2) configured for detecting, in real time, a lean angle value of the vehicle 10 in stable as well as dynamic conditions.
- the lean angle sensor 50 is mounted on the frame structure 11 of the vehicle and is discussed in detail in Figure 2-4 of the present invention.
- an air cleaner 36 is secured to a pair of rear tubes 14 extending rearwardly from the main tube 13.
- suspension systems are provided for comfortable steering of said vehicle 10 on road.
- the front fork assembly 23, which forms the front suspension system, serves as rigidity component just like the frame structure 11 .
- the front fork assembly 23 clamped to the head tube 12 through an upper bracket (not shown) and a lower bracket (not shown) is capable of being moved in the left and right direction of the vehicle 10.
- a rear suspension system 37 which may be a hydraulic damped arrangement, is connected to the frame structure 11 at a rear portion thereof. Particularly, at the rear portion of the frame structure 11 , the rear wheel 35 is suspended by the rear suspension system 37.
- the engine 25 is mounted to a front lower portion of the frame structure 11 by means of an engine mounting bracket (Refer to Figure 3) and disposed below a portion of the main tube 13.
- the engine 25 is equipped with an exhaust system that comprises an exhaust pipe (not shown) connected to the engine 25 and a muffler (not shown) connected to the exhaust pipe.
- the muffler (not shown) extends rearwards along the rear wheel 35.
- the transmission assembly 26 comprises a gearbox containing gear train and a drive mechanism connecting the gearbox to the rear wheel 35.
- the gear train comprises a gear shift shaft, and a plurality of gears, each having a varying gear ratio.
- speed change is achieved by operation of a gear shift linkage assembly which is operatively connected to the gear shift shaft (not shown) of the transmission assembly 26.
- a rear fender 48 for covering an upper side of the rear wheel 35 is mounted to the rear portion of the frame structure to prevent mud and water splashed by the rotating rear wheel 35 from entering the muffler, the engine 25 and other parts disposed close to the rear wheel 35.
- a plurality of rear covers 49 are attached to the rear portion of the frame structure.
- the vehicle 10 is a hybrid vehicle and comprises an electric motor as an alternate power source for running the vehicle.
- the vehicle 10 comprises an integrated starter generator and an integrated starter generator controller.
- thermoelectric seat modules are provided in the seat to enhance thermal comfort of rider.
- a controller to control the one or more thermoelectric modules is also provided in the seat 30.
- the thermoelectric modules and the controller are positioned in a seat foam of the seat such that the connection of the controller to the two seat modules and one or more switches for operating the modules/controller can be done easily. Also, wires from the controller to different components of the vehicle should be routed without any difficulty.
- the controller operates the seat modules (heating/ cooling or level of heating/cooling in the seat) located inside the foam after receiving inputs from the switches.
- the switches can be located on a left or a right side of the seat 30 in a vehicle width direction.
- Figure 2 illustrate a frame structure 11 of the vehicle 10 and a lean angle sensor 50 mounted on the frame structure 11 , in accordance with an embodiment of the present invention.
- Figure 3 illustrates a position of the lean angle sensor 50 with respect to the engine 25 and the engine mounting bracket 52, in accordance with an embodiment of the present invention.
- the main tube 13 of the frame structure 11 extends rearwardly from the head pipe 12.
- the main tube 13 comprises a first section 13a and a second section 13b.
- the first section 13a extends rearwardly from the head pipe 12 and the second section 13b extends rearwardly and downwardly from the first section 13a.
- the lean angle sensor 50 is mounted on the second section 13b of the main tube 13.
- the lean angle sensor 50 is arranged on the second section 13b of the main tube 13 in a region behind the engine 25 in a vehicle front-rear direction and above an engine mounting bracket 52 in a vehicle upward-downward direction.
- the lean angle sensor 50 is located at a substantial mid portion of the vehicle 10 with a centre of gravity of the vehicle 10 being located in close proximity of said lean angle sensor 50. It is to be understood that when the lean angle sensor 50 is mounted in a region which is close to the center of gravity of the vehicle 10, the pitch and/or yaw of the vehicle 10 are not required for calculation of the lean angle value of the vehicle 10. The lean angle value of the vehicle 10 can be accurately calculated only by detecting the tilt of the vehicle 10. Therefore, complex calibrations of the lean angle sensor 50 to include pitch and/or yaw of the vehicle 10 are avoided.
- the lean angle sensor is communicatively coupled to an electronic control unit (ECU) 54.
- ECU electronice control unit
- the arrangement of ECU 54 as shown in the Figure 3 should not be construed as limiting and the ECU can be arranged on different parts of the vehicle 10 where it can effectively communicate with the lean angle sensor 50.
- the lean angle sensor 50 is electronically interfaced with the ECU 54.
- the ECU 54 provides the lean angle sensor 50 with a sensor supply and a ground and receives output from the lean angle sensor 50.
- the routing of the lean angle sensor is such that it does not interfere with other main sensors required for engine operation.
- Figure 4 illustrates a mounting unit 56 for mounting the lean angle sensor 50 on the main tube 13, in accordance with an embodiment of the present invention.
- the mounting unit 56 comprises a vertical member 58 and a horizontal member 60.
- the vertical member 58 extends between a first end 58a and a second end 58b in the vehicle upward-downward direction.
- the lean angle sensor 50 is mounted on the vertical member 58.
- the horizontal member 60 extends from a first end 58a of the vertical member 58 and extends in a direction towards the second section 13b of the main tube 13.
- the horizontal member 60 is configured to be fixedly or detachably attached to the second section 13b of the main tube 13.
- the vertical member 58 has one or more mounting holes M1 which correspond with one or more mounting holes M2 provided on the lean angle sensor 50.
- the one or more mounting holes on the vertical member 58 are aligned with the one or more mounting holes on the lean angle sensor 50 and secured by means of one or more fasteners F such as bolts, nuts, screws, washers, studs, rivets, anchors, inserts, threaded rods and the likes known to person skilled in the art.
- the horizontal member 60 is fixedly attached to the second section of the main tube by means such as welding and the likes known in the art.
- the horizontal member 60 is detachably attached to the second section of the main tube by a clamping unit.
- the horizontal member 60 is detachably attached to a bracket arranged on the second section of the main tube.
- shape of the mounting unit 58 should not be construed as limiting and other shapes of the mounting unit 58 can also be used to mount the lean angle sensor on the second section of the main tube.
- the mounting unit is Z-shaped.
- Figure 5 illustrates a method 100 for detecting the lean angle value of the two-wheeled vehicle 10, in accordance with an embodiment of the present invention.
- the method comprises receiving, by the electronic control unit (ECU) 54, the lean angle value of the vehicle 10 from the lean angle sensor 50.
- the lean angle sensor 50 is mounted on a second section 13b of a main tube 13.
- the main tube 13 extends rearwardly from the head pipe 12 of the vehicle 10 and comprises a first section 13a and the second section 13b.
- the first section 13a extends rearwardly from the head pipe 12 and the second section 13b extends rearwardly and downwardly from the first section 13a of the main tube 13.
- the lean angle value detected by the lean angle sensor 50 is transmitted to the ECU 54 in real time.
- the method comprises comparing the lean angle of the vehicle with a pre-determined value.
- the step 102 is performed by the ECU 54.
- the method comprises performing a first action when the lean angle value is greater than a pre-determined value.
- the step 103 is performed by the ECU 54.
- the method comprises performing a second action when the lean angle value is less than a pre-determined value.
- the step 104 is performed by the ECU 54.
- the first action comprises one or more: (i) disabling one or more actuators responsible for mobility of the vehicle in a vehicle static condition or in a vehicle dynamic condition, (ii) transmitting the lean angle value to a speedometer which displays the lean angle value using one or more first colors, (iii) providing a haptic feedback to a driver of the vehicle; and (iv) generating an audio alarm.
- the one or actuators comprises an ignition switch of the vehicle and/or a fuel injection system.
- the lean angle value is displayed using a red color.
- the ECU 54 communicates with the speedometer of the vehicle either through hardware or through Communication Area Network (CAN) communication.
- the lean angle value is displayed on the speedometer in numbers.
- an alarm notification is given to the rider prior to generating an audio alarm.
- the haptic feedback is a vibration being provided to a handlebar of the vehicle (10) in a region where the driver grips the handlebar
- the second action comprises transmitting the lean angle value to the speedometer which displays the lean angle value using one or more second colors.
- the lean angle value is displayed using a green color.
- the first action is performed by the ECU 54 for safety of the rider and/or to warn the rider that the lean angle is greater than a pre-determined angle. For example, when the rider riding the vehicle falls off and the one or more actuators are not disabled, the vehicle may inflict damage to itself and to the rider.
- the pre-determined angle is generally pre-set by the manufacturer of the vehicle.
- the pre-determined value is the maximum value of the lean angle which is safe during turning and/or leaning of the vehicle.
- the present invention obtains accurate value of lean angle of the vehicle 10 without complex calibration.
- complex calibration of the lean angle sensor to include yaw and pitch of the vehicle for calculation of the lean angle is not required.
- the present invention eliminates need of calibration of lean angle sensor.
- the present invention changes the mounting location of the lean angle sensor for simple and accurate measurement of the lean angle of the vehicle 10.
- the present invention further provides feedback to the rider to increase customer’s experience.
- the present invention further provides warning signals such as alarm notifications, haptic feedback and audio alarm to the rider to notify about the danger of roll over as the lean angle value exceeds the pre-determined/threshold value.
- the present invention further provides safety mechanisms such as disabling the one or more actuators of the vehicle when the lean angle value exceeds the pre- determined/threshold value. Such safety mechanisms ensure that minimum damage is inflicted on the vehicle as well as the rider.
- the claimed steps as discussed above are not routine, conventional, or well understood in the art, as the claimed steps enable the following solutions to the existing problems in conventional technologies.
- the technical problem of calibrating the lean angle sensor 50 to include the yaw and pitch for calculation of the lean angle of the vehicle 10 is solved by changing the mounting location of the lean angle sensor 50 as claimed in the present invention. In other words, by mounting the lean angle sensor 50 closer to the center of gravity of the vehicle 10, only the tilt of the vehicle is required for accurate calculation of the lean angle of the vehicle 10.
- one or more computer-readable storage media may be utilized in implementing embodiments consistent with the present invention.
- a computer-readable storage medium refers to any type of physical memory on which information or data readable by a processor may be stored.
- a computer-readable storage medium may store instructions for execution by one or more processors of the electronic control unit, including instructions for causing the processor(s) to perform steps or stages consistent with the embodiments described herein.
- the term "computer-readable medium” should be understood to include tangible items and exclude carrier waves and transient signals, i.e., be non-transitory. Examples include random access memory (RAM), readonly memory (ROM), volatile memory, nonvolatile memory, hard drives, CD ROMs, DVDs, flash drives, disks, and any other known physical storage media.
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Abstract
The present invention relates a two-wheeled vehicle (10). The two-wheeled vehicle (10) comprises a head pipe (12) and a main tube (13). The main tube (13) extends rearwardly from the head pipe (12). The main tube (13) has a first section (13a) extending rearwardly from the head pipe (12) and a second section (13b) extending rearwardly and downwardly from the first section (13a). The present invention further comprises a lean angle sensor (50) configured to detect a lean angle value of the vehicle (10) and communicatively coupled to an Electronic Control Unit (ECU) (54). The lean angle sensor (50) is mounted on the second section (13b) of the main tube (13).
Description
TITLE OF INVENTION
A TWO-WHEELED VEHICLE
FIELD OF THE INVENTION
[001] The present invention relates to a two-wheeled vehicle. More particularly, the present invention relates to mounting of a lean angle sensor on the two-wheeled vehicle. BACKGROUND OF THE INVENTION
[002] Two-wheeled vehicles, such as motorcycles, are generally provided with a lean angle sensor which detects a lean angle value of the vehicle in real time. Lean angle is an angle at which the vehicle is leaned at corners or while turning. For vehicles without any means to detect the lean angle value, if the vehicle leans too far or during high-siding conditions, the laid- down orientation of the vehicle may adversely affect an engine of the vehicle, safety of a rider and cause various issues such as fuel spilling from a fuel tank of the vehicle. In vehicles having a lean angle sensor, the lean angle sensor detects the lean angle value of the vehicle and the same is displayed to the rider. Display of lean angle value to the rider helps him to assess his riding performance as well as avoid instances such as vehicle roll-over.
[003] In the vehicles provided with the lean angle sensor, the lean angle sensor is located away from a center of gravity of the vehicle. Further, the
lean angle sensor detects only a tilt of the vehicle. Tilt is a rotation around a longitudinal axis of the vehicle. The calculation of the lean angle value, based only on the tilt of the vehicle, is not always accurate when the lean angle sensor is located away from the center of gravity of the vehicle. For example, during uphill or downhill conditions, the calculation of the lean angle should also include yaw and/or pitch of the vehicle. Yaw is rotation of the vehicle about a vertical axis. Pitch is rotation of the vehicle about a transverse axis. However, in absence of detection of yaw and/or pitch of the vehicle by the lean angle sensor, the calculation of the lean angle value is not accurate. The inaccurate lean angle values displayed to the rider in different terrains will provide false assurance to the rider which again concerns the rider’s safety.
[004] In order to overcome the aforementioned drawbacks, the existing art teaches calibration of the lean angle sensor to include the yaw and/or pitch of the vehicle. Such calibration of the lean angle sensors include setting an offset to compensate for the yaw and/or pitch of the vehicle. However, such calibrations are complex and even after such calibrations the lean angle value obtained by the lean angle sensor may not be accurate.
[005] In view of the foregoing, there is a need-felt to overcome the above- mentioned disadvantages of the existing art.
SUMMARY OF THE INVENTION
[006] In one aspect, a two-wheeled vehicle having a lean angle sensor is disclosed. The two-wheeled vehicle comprises a head pipe and a main tube. The main tube extends rearwardly from the head pipe. The main tube has a first section which extends rearwardly from the head pipe and a second section which extends rearwardly and downwardly from the first section. The two-wheeled vehicle further comprises a lean angle sensor configured to detect a lean angle value of the vehicle. The lean angle sensor is mounted on the second section of the main tube and is communicatively coupled to an Electronic Control Unit (ECU).
[007] In an embodiment, the detection of the lean angle corresponds to detection of tilt of the vehicle. Tilt is a rotation around a longitudinal axis of the vehicle.
[008] In an embodiment, the lean angle sensor is mounted on the second section of the main tube in a region behind an engine of the vehicle in a vehicle front-rear direction and above an engine mounting bracket in a vehicle upward-downward direction such that the lean angle sensor is positioned near a center of gravity of the vehicle.
[009] In an embodiment, the two-wheeled vehicle comprises a mounting unit for mounting the lean angle sensor on the second section of the main tube. In one non-limiting example, the mounting unit comprises a vertical member and a horizonal member. The vertical member extends between a first end and a second end in a vehicle upward downward direction and is
configured such that the lean angle sensor can be mounted on the vertical member. The horizontal member extends from the first end of the vertical member in a direction towards the second section of the main tube. The horizontal member is configured to be fixedly or detachably attached to the second section of the main tube.
[010] In another aspect of the invention, the present invention discloses a method for detecting a lean angle of a two-wheeled vehicle. The method comprises a step of receiving, by an electronic control unit, a lean angle value of the vehicle from a lean angle sensor. The lean angle sensor is mounted on a second section of a main tube. The main tube extends rearwardly from a head pipe of the vehicle and comprises a first section and the second section. The first section extends rearwardly from the head pipe and the second section extends rearwardly and downwardly from the first section of the main tube. The method further comprises a step of comparing, by the electronic control unit, the lean angle value of the vehicle with a pre-determined value. The method further comprises a step of performing, by the electronic control unit, a first action when the lean angle value is greater than the pre-determined value and a second action when the lean angle value is less than the pre-determined value.
[011] In an embodiment, the first action comprises one or more of the following: (i) disabling one or more actuators responsible for mobility of the vehicle in a vehicle static condition or in a vehicle dynamic condition, (ii) transmitting the lean angle value to a speedometer which displays the lean
angle value using one or more first colors, (iii) providing a haptic feedback to a driver of the vehicle, (iv) generating an audio alarm. The second action comprises transmitting the lean angle value to the speedometer which displays the lean angle of the vehicle using one or more second colors.
[012] In an embodiment, the one or more actuators is an ignition switch of the vehicle and/or a fuel injection system.
[013] In an embodiment, the haptic feedback is a vibration provided to a handlebar of the vehicle in a region where the driver grips the handlebar
BRIEF DESCRIPTION OF THE DRAWINGS
[014] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
Figure 1 illustrates a two-wheeled vehicle, in accordance with an embodiment of the present invention.
Figure 2 illustrate a frame structure of the vehicle and a lean angle sensor mounted on the frame structure, in accordance with an embodiment of the present invention.
Figure 3 illustrates a position of the lean angle sensor with respect to the engine and the engine mounting bracket, in accordance with an embodiment of the present invention.
Figure 4 illustrates a mounting unit for mounting the lean angle sensor on the main tube, in accordance with an embodiment of the present invention.
Figure 5 illustrates a method for detecting the lean angle of the twowheeled vehicle, in accordance with an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[015] Various features and embodiments of the present invention here will be discernible from the following further description thereof, set out hereunder. It is to be understood that a longitudinal axis refers to a front to rear axis relative to a two-wheeled vehicle, defining a vehicle longitudinal direction while a lateral/transverse axis refers to a side to side, or left to right axis relative to the two-wheeled vehicle, defining a vehicle lateral/width direction. Arrows provided in the top right corner of figures depicts direction with respect to the two-wheeled vehicle, wherein an arrow F denotes front direction, an arrow R indicates rearward direction, an arrow UP denotes upward direction, an arrow DW denoted downward direction, as and where applicable. Also, it is to be understood that the
phraseology and terminology used herein is only for the purpose of description and should not be regarded as limiting.
[016] Figure 1 illustrates a two-wheeled vehicle 10, in accordance with an embodiment of the present invention.
[017] The two-wheeled vehicle 10 comprises a frame structure 11 (shown in Figure 2) to support different parts of the vehicle 10. A head tube 12 is provided at a front end of said frame structure 11. The head tube 12 supports a steering shaft (not shown) rotatably in a certain range. In an upper portion of the head tube 12, a handlebar 20 is rotatably connected to the steering shaft . The handlebar 20 is used to steer the vehicle 10 and is connected to a front wheel 21 through a front fork assembly 23. The front fork assembly 23 in turn is connected to the handlebar 20 by means of a pair of upper and lower brackets (not shown). The front fork assembly 23 is further supported partially on a front fender 22 and is connected to the front wheel 21. An upper portion of the front wheel 21 is covered by the front fender 22 which prevents mud and water from getting deflected towards an upper portion of the front fork assembly 23.
[018] In a front portion of the frame structure 11 , a fuel tank 24 is arranged immediately behind the handlebar 20 and is disposed over a main tube 13 of the frame structure 11 and above an engine 25 such as an internal combustion engine. In an embodiment where a fuel pump is provided, the fuel tank 24 constituting a part of a fuel supply system supplies fuel to the engine 25 through the fuel pump (not shown) which
also forms a part of said supply system. In another embodiment where the fuel pump is absent, the fuel tank 24 supplies fuel to the engine 25 through a carburettor (not shown). A seat 30 is placed behind the fuel tank 24. The seat 30 comprises a front rider portion and rear pillion portion. In an embodiment, the front rider portion and the rear pillion portion are provided as separate seat portions. In an embodiment, the front rider portion and the rear pillion portion are provided as a single seat portion.
[019] For safety of the rider and in conformance with the traffic rules, a headlamp unit 31 and a turn signal lamp unit 32 are provided in a front portion of the vehicle 10. The headlamp unit 31 and the turn signal lamp unit 32 are housed in a headlamp housing assembly 33.
[020] The safety of said two-wheeled vehicle 10 is further improved by providing a lean angle sensor 50 (Refer to Figure 2) configured for detecting, in real time, a lean angle value of the vehicle 10 in stable as well as dynamic conditions. The lean angle sensor 50 is mounted on the frame structure 11 of the vehicle and is discussed in detail in Figure 2-4 of the present invention.
[021] Further, an air cleaner 36 is secured to a pair of rear tubes 14 extending rearwardly from the main tube 13. Also, suspension systems are provided for comfortable steering of said vehicle 10 on road. The front fork assembly 23, which forms the front suspension system, serves as rigidity component just like the frame structure 11 . The front fork assembly 23 clamped to the head tube 12 through an upper bracket (not shown) and a
lower bracket (not shown) is capable of being moved in the left and right direction of the vehicle 10. Further, a rear suspension system 37, which may be a hydraulic damped arrangement, is connected to the frame structure 11 at a rear portion thereof. Particularly, at the rear portion of the frame structure 11 , the rear wheel 35 is suspended by the rear suspension system 37.
[022] The engine 25 is mounted to a front lower portion of the frame structure 11 by means of an engine mounting bracket (Refer to Figure 3) and disposed below a portion of the main tube 13. The engine 25 is equipped with an exhaust system that comprises an exhaust pipe (not shown) connected to the engine 25 and a muffler (not shown) connected to the exhaust pipe. The muffler (not shown) extends rearwards along the rear wheel 35.
[023] Power from the engine 25 is transmitted to the rear wheel 35 through the transmission assembly 26, so as to drive and rotate the rear wheel 35. The transmission assembly 26 comprises a gearbox containing gear train and a drive mechanism connecting the gearbox to the rear wheel 35. Particularly, the gear train comprises a gear shift shaft, and a plurality of gears, each having a varying gear ratio. Particularly, speed change is achieved by operation of a gear shift linkage assembly which is operatively connected to the gear shift shaft (not shown) of the transmission assembly 26.
[024] Thus, power from the engine 25 is transmitted to the rear wheel 35 rotatably supported at a rear end of a swing arm 47. A rear fender 48 for covering an upper side of the rear wheel 35 is mounted to the rear portion of the frame structure to prevent mud and water splashed by the rotating rear wheel 35 from entering the muffler, the engine 25 and other parts disposed close to the rear wheel 35. To enhance the overall aesthetics of the vehicle 10 and to prevent undesired foreign particles from entering parts of the vehicle 10, a plurality of rear covers 49 are attached to the rear portion of the frame structure.
[025] In an embodiment, the vehicle 10 is a hybrid vehicle and comprises an electric motor as an alternate power source for running the vehicle.
[026] In an embodiment, the vehicle 10 comprises an integrated starter generator and an integrated starter generator controller.
[027] In an embodiment, to address the problem of poor thermal comfort faced by the rider during long distance, one or more temperature controlling units such as thermoelectric seat modules are provided in the seat to enhance thermal comfort of rider. Further, a controller to control the one or more thermoelectric modules is also provided in the seat 30. In an embodiment, the thermoelectric modules and the controller are positioned in a seat foam of the seat such that the connection of the controller to the two seat modules and one or more switches for operating the modules/controller can be done easily. Also, wires from the controller to different components of the vehicle should be routed without any difficulty.
The controller operates the seat modules (heating/ cooling or level of heating/cooling in the seat) located inside the foam after receiving inputs from the switches. The switches can be located on a left or a right side of the seat 30 in a vehicle width direction.
[028] Figure 2 illustrate a frame structure 11 of the vehicle 10 and a lean angle sensor 50 mounted on the frame structure 11 , in accordance with an embodiment of the present invention. Figure 3 illustrates a position of the lean angle sensor 50 with respect to the engine 25 and the engine mounting bracket 52, in accordance with an embodiment of the present invention.
[029] As shown, the main tube 13 of the frame structure 11 extends rearwardly from the head pipe 12. The main tube 13 comprises a first section 13a and a second section 13b. The first section 13a extends rearwardly from the head pipe 12 and the second section 13b extends rearwardly and downwardly from the first section 13a. The lean angle sensor 50 is mounted on the second section 13b of the main tube 13.
[030] More specifically, as shown in Figure 3, the lean angle sensor 50 is arranged on the second section 13b of the main tube 13 in a region behind the engine 25 in a vehicle front-rear direction and above an engine mounting bracket 52 in a vehicle upward-downward direction.
[031] Thus, the lean angle sensor 50 is located at a substantial mid portion of the vehicle 10 with a centre of gravity of the vehicle 10 being located in close proximity of said lean angle sensor 50. It is to be
understood that when the lean angle sensor 50 is mounted in a region which is close to the center of gravity of the vehicle 10, the pitch and/or yaw of the vehicle 10 are not required for calculation of the lean angle value of the vehicle 10. The lean angle value of the vehicle 10 can be accurately calculated only by detecting the tilt of the vehicle 10. Therefore, complex calibrations of the lean angle sensor 50 to include pitch and/or yaw of the vehicle 10 are avoided. In other words, calibrations will not be complex and also does not require more time and effort for the development since mounting the lean angle sensor close to center of gravity of the vehicle makes the calibration simple and accurate. It is to be understood that there is no change in the construction or functioning of the lean angle sensor 50. The present invention changes the mounting location of the lean angle sensor for accurate measurement of the lean angle of the vehicle 10.
[032] The lean angle sensor is communicatively coupled to an electronic control unit (ECU) 54. The arrangement of ECU 54 as shown in the Figure 3 should not be construed as limiting and the ECU can be arranged on different parts of the vehicle 10 where it can effectively communicate with the lean angle sensor 50. The lean angle sensor 50 is electronically interfaced with the ECU 54. In an embodiment, the ECU 54 provides the lean angle sensor 50 with a sensor supply and a ground and receives output from the lean angle sensor 50. In an embodiment, the routing of the
lean angle sensor is such that it does not interfere with other main sensors required for engine operation.
[033] Figure 4 illustrates a mounting unit 56 for mounting the lean angle sensor 50 on the main tube 13, in accordance with an embodiment of the present invention.
[034] As shown, the mounting unit 56 comprises a vertical member 58 and a horizontal member 60. The vertical member 58 extends between a first end 58a and a second end 58b in the vehicle upward-downward direction. The lean angle sensor 50 is mounted on the vertical member 58. The horizontal member 60 extends from a first end 58a of the vertical member 58 and extends in a direction towards the second section 13b of the main tube 13. The horizontal member 60 is configured to be fixedly or detachably attached to the second section 13b of the main tube 13.
[035] In an embodiment, the vertical member 58 has one or more mounting holes M1 which correspond with one or more mounting holes M2 provided on the lean angle sensor 50. During assembly, the one or more mounting holes on the vertical member 58 are aligned with the one or more mounting holes on the lean angle sensor 50 and secured by means of one or more fasteners F such as bolts, nuts, screws, washers, studs, rivets, anchors, inserts, threaded rods and the likes known to person skilled in the art.
[036] In an embodiment, the horizontal member 60 is fixedly attached to the second section of the main tube by means such as welding and the likes known in the art.
[037] In an embodiment, the horizontal member 60 is detachably attached to the second section of the main tube by a clamping unit.
[038] In an embodiment, the horizontal member 60 is detachably attached to a bracket arranged on the second section of the main tube.
[039] It is to be understood that shape of the mounting unit 58 should not be construed as limiting and other shapes of the mounting unit 58 can also be used to mount the lean angle sensor on the second section of the main tube. In one non-limiting example, the mounting unit is Z-shaped.
[040] Figure 5 illustrates a method 100 for detecting the lean angle value of the two-wheeled vehicle 10, in accordance with an embodiment of the present invention.
[041] As step 101 , the method comprises receiving, by the electronic control unit (ECU) 54, the lean angle value of the vehicle 10 from the lean angle sensor 50. The lean angle sensor 50 is mounted on a second section 13b of a main tube 13. The main tube 13 extends rearwardly from the head pipe 12 of the vehicle 10 and comprises a first section 13a and the second section 13b. The first section 13a extends rearwardly from the head pipe 12 and the second section 13b extends rearwardly and downwardly from the first section 13a of the main tube 13. The lean angle
value detected by the lean angle sensor 50 is transmitted to the ECU 54 in real time.
[042] At step 102, the method comprises comparing the lean angle of the vehicle with a pre-determined value. The step 102 is performed by the ECU 54.
[043] At step 103, the method comprises performing a first action when the lean angle value is greater than a pre-determined value. The step 103 is performed by the ECU 54.
[044] At step 104, the method comprises performing a second action when the lean angle value is less than a pre-determined value. The step 104 is performed by the ECU 54.
[045] In an embodiment, the first action comprises one or more: (i) disabling one or more actuators responsible for mobility of the vehicle in a vehicle static condition or in a vehicle dynamic condition, (ii) transmitting the lean angle value to a speedometer which displays the lean angle value using one or more first colors, (iii) providing a haptic feedback to a driver of the vehicle; and (iv) generating an audio alarm.
[046] In one non-limiting example, the one or actuators comprises an ignition switch of the vehicle and/or a fuel injection system. In another nonlimiting example, the lean angle value is displayed using a red color. In another non-limiting example, the ECU 54 communicates with the speedometer of the vehicle either through hardware or through Communication Area Network (CAN) communication. In another non-
limiting example, the lean angle value is displayed on the speedometer in numbers. In another non-limiting example, an alarm notification is given to the rider prior to generating an audio alarm. In another non-limiting example, the haptic feedback is a vibration being provided to a handlebar of the vehicle (10) in a region where the driver grips the handlebar
[047] In an embodiment, the second action comprises transmitting the lean angle value to the speedometer which displays the lean angle value using one or more second colors. In one non-limiting example, the lean angle value is displayed using a green color.
[048] It is to be understood the first action is performed by the ECU 54 for safety of the rider and/or to warn the rider that the lean angle is greater than a pre-determined angle. For example, when the rider riding the vehicle falls off and the one or more actuators are not disabled, the vehicle may inflict damage to itself and to the rider.
[049] The pre-determined angle is generally pre-set by the manufacturer of the vehicle. In one non-limiting example, the pre-determined value is the maximum value of the lean angle which is safe during turning and/or leaning of the vehicle.
[050] Advantageously, the present invention obtains accurate value of lean angle of the vehicle 10 without complex calibration. In other words, complex calibration of the lean angle sensor to include yaw and pitch of the vehicle for calculation of the lean angle is not required. In other words, the present invention eliminates need of calibration of lean angle sensor.
There is no change in the construction or functioning of the lean angle sensor 50. The present invention changes the mounting location of the lean angle sensor for simple and accurate measurement of the lean angle of the vehicle 10. The present invention further provides feedback to the rider to increase customer’s experience. The present invention further provides warning signals such as alarm notifications, haptic feedback and audio alarm to the rider to notify about the danger of roll over as the lean angle value exceeds the pre-determined/threshold value. The present invention further provides safety mechanisms such as disabling the one or more actuators of the vehicle when the lean angle value exceeds the pre- determined/threshold value. Such safety mechanisms ensure that minimum damage is inflicted on the vehicle as well as the rider.
[051] The claimed steps as discussed above are not routine, conventional, or well understood in the art, as the claimed steps enable the following solutions to the existing problems in conventional technologies. Specifically, the technical problem of calibrating the lean angle sensor 50 to include the yaw and pitch for calculation of the lean angle of the vehicle 10 is solved by changing the mounting location of the lean angle sensor 50 as claimed in the present invention. In other words, by mounting the lean angle sensor 50 closer to the center of gravity of the vehicle 10, only the tilt of the vehicle is required for accurate calculation of the lean angle of the vehicle 10.
[052] Furthermore, one or more computer-readable storage media may be utilized in implementing embodiments consistent with the present invention. A computer-readable storage medium refers to any type of physical memory on which information or data readable by a processor may be stored. Thus, a computer-readable storage medium may store instructions for execution by one or more processors of the electronic control unit, including instructions for causing the processor(s) to perform steps or stages consistent with the embodiments described herein. The term "computer-readable medium" should be understood to include tangible items and exclude carrier waves and transient signals, i.e., be non-transitory. Examples include random access memory (RAM), readonly memory (ROM), volatile memory, nonvolatile memory, hard drives, CD ROMs, DVDs, flash drives, disks, and any other known physical storage media. [053] While the present invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modification may be made without departing from the scope of the invention as defined in the following claims.
List of reference numerals
10-vehicle
12-head pipe
13-main tube
13a- first section
13b- second section
14- rear tubes
20- handlebar
21 - front wheel
22-front fender
23- front fork assembly
24- fuel tank
25- engine
26- transmission assembly
30- seat
31 - head lamp unit
32- turn signal lamp unit
33- headlamp housing assembly
35- rear wheel
36- air cleaner
37- rear suspension system
47- swing arm
48- rear fender
49- rear cover
50- lean angle sensor
52- engine mounting bracket
54- Electronic Control Unit
56- mounting unit
58- vertical member 58a- first end of the vertical member
58b- second end of the vertical member
60- horizontal member
M1 - Mounting holes on vertical member
M2-Mounting holes on the lean angle sensor F- fasteners
Claims
CLAIMS:
1 . A two-wheeled vehicle (10) comprising: a head pipe (12); a main tube (13) extending rearwardly from the head pipe (12), the main tube (13) having a first section (13a) extending rearwardly from the head pipe (12) and a second section (13b) extending rearwardly and downwardly from the first section (13a); and a lean angle sensor (50) configured to detect a lean angle value of the vehicle (10) and communicatively coupled to an Electronic Control Unit (ECU) (54), wherein the lean angle sensor (50) is mounted on the second section (13b) of the main tube (13).
2. The two-wheeled vehicle (10) as claimed in claim 1 , wherein the lean angle value is a tilt of the two-wheeled vehicle (10).
3. The two-wheeled vehicle (10) as claimed in claim 1 , wherein the lean angle sensor (50) is mounted on the second section (13b) in a region behind an engine (25) in a vehicle front-rear direction and above an engine mounting bracket (52) in a vehicle upward-downward direction such that the lean angle sensor (50) is positioned near a center of gravity of the two-wheeled vehicle (10).
The two-wheeled vehicle (10) as claimed in claim 1 , comprising a mounting unit (56) for mounting the lean angle sensor (50) on the second section (13b), wherein the mounting unit (56) comprises: a vertical member (58) extending between a first end (58a) and a second end (58b) in the vehicle upward-downward direction, the vertical member (58) configured such that the lean angle sensor (50) is mounted on the vertical member (58); and a horizontal member (60) extending from the first end (58a) of the vertical member (58) in a direction towards the second section (13b) of the main tube (13), the horizontal member (60) configured to be fixedly or detachably attached to the second section (13b) of the main tube (13). The two-wheeled vehicle (10) as claimed in claim 1 , further comprising a seat (30) having one or more temperature controlling units for controlling temperature of the seat (30) and a controller for controlling the one or more temperature controlling units. A method (100) for detecting a lean angle value of a two-wheeled vehicle (10), the method comprising steps of: receiving (101 ), by an electronic control unit (ECU) (54), a lean angle value of the two-wheeled vehicle (10) from a lean angle sensor (50), the lean angle sensor (50) mounted on a second section (13b) of a
main tube (13), wherein the main tube (13) extends rearwardly from a head pipe (12) and the main tube (13) comprises a first section (13a) extending rearwardly from a head pipe (12) and the second section (13b) extends rearwardly and downwardly from the first section (13a); comparing (102), by the electronic control unit (54), the lean angle value with a pre-determined value; and performing (103, 104), by the electronic control unit (54), a first action when the lean angle value is greater than the pre-determined value and a second action when the lean angle value is less than the predetermined value.
7. The method as claimed in claim 6, wherein the first action comprises one or more of: disabling one or more actuators responsible for mobility of the two-wheeled vehicle (10) in a vehicle static condition or in a vehicle dynamic condition; transmitting the lean angle value to a speedometer which displays the lean angle value using one or more first colors; providing a haptic feedback to a driver of the two-wheeled vehicle (10); and generating an audio alarm.
8. The method as claimed in claim 6, wherein the second action comprises: transmitting the lean angle value to the speedometer which displays the lean angle value using one or more second colors.
9. The method as claimed in claim 6, wherein the one or more actuators comprises: an ignition switch of the two-wheeled vehicle (10); and a fuel injection system. 10. The method as claimed in claim 7, wherein the haptic feedback is a vibration being provided to a handlebar of the two-wheeled vehicle (10) in a region where the driver grips the handlebar.
Applications Claiming Priority (2)
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IN202241007458 | 2022-02-11 | ||
IN202241007458 | 2022-02-11 |
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PCT/IN2022/050982 WO2023152758A1 (en) | 2022-02-11 | 2022-11-09 | A two-wheeled vehicle |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10507747B2 (en) * | 2017-03-29 | 2019-12-17 | Ts Tech Co., Ltd. | Conveyance seat |
WO2020041191A1 (en) * | 2018-08-20 | 2020-02-27 | Indian Motorcycle International, LLC | Wheeled vehicle notification system and method |
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2022
- 2022-11-09 WO PCT/IN2022/050982 patent/WO2023152758A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10507747B2 (en) * | 2017-03-29 | 2019-12-17 | Ts Tech Co., Ltd. | Conveyance seat |
WO2020041191A1 (en) * | 2018-08-20 | 2020-02-27 | Indian Motorcycle International, LLC | Wheeled vehicle notification system and method |
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