Motorized bicycle
By introducing a first device to assist gear shifting and a second device to calculate and display the shift timing on a motorized bicycle, the problem of uneven downshifting in clutchless gear shifting is solved, achieving a more comfortable and safer gear shifting process.
Patent Information
- Application Number
- CN202480039341.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-09-15
- Filing Date
- 2024-09-02
- Publication Date
- 2026-01-13
AI Technical Summary
Existing motorized bicycles are prone to unevenness and gear skipping issues during clutchless gear shifting, especially during downshifting. This is particularly true when the driver selects the wrong shift point or the engine speed is not properly matched, resulting in an uncomfortable driving experience.
The system employs a first device to assist the driver in shifting gears without releasing the accelerator or operating the clutch, and a second device to calculate and display the ideal shift point, including identifying the upcoming shift process and predicting the shift time. The system also utilizes a controller to detect and process different operating parameters to ensure precise gear switching.
It improves the smoothness and safety of the gear shifting process, especially during downshifting, reducing gear slippage and enhancing driving comfort and safety.
Smart Images
Figure CN121336062A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The invention relates to a motorized foot vehicle, such as a motorcycle. BACKGROUND
[0002] In particular, the invention relates to a motorized foot vehicle having a so-called automatic gearshift device. Such an automatic gearshift device assists the driver in the gearshift without a clutch. The system is also known under the concepts "Quickshifter" or "Blipper". A Quickshifter enables a gearshift into a higher gear without releasing the throttle and without operating the clutch. For this purpose, the ignition or the fuel injection is interrupted for a very short period of time. In contrast thereto, a Blipper enables a gearshift into a lower gear. For this purpose, in the overrun mode, the motor speed is increased by a short-term fuel supply. In particular, the gearshift down, i.e. the Blipper function, is a big challenge, in particular when the driver selects the wrong gearshift point in time and the motor speed is not adapted or the automatic motor speed adaptation is not sufficient. In this case, the gearshift is not smooth and is perceived as very uncomfortable. In some cases, even a kick-down can occur. SUMMARY
[0003] It is therefore an object of the invention to provide a motorized foot vehicle which optimizes the gearshift without a clutch, in particular the gearshift down, with respect to the prior art.
[0004] This object is achieved by a motorized foot vehicle according to claim 1. Further advantages and features are derived from the dependent claims as well as from the description and the figures.
[0005] According to the present invention, a motorized bicycle (e.g., a motorcycle) includes a motor (especially an internal combustion engine) and a shift transmission, the motor and the shift transmission being connected via a clutch. The motorized bicycle has a first device designed to assist the rider in shifting gears without a clutch (i.e., without operating the clutch), and a second device and a display device. The second device is designed to calculate (especially pre-calculate) shift points, and the display device is used to display and / or transmit the shift points to the rider. The shift transmission is a transmission that is actively operated by the rider or must be actively operated by the rider to initiate the shifting process. In principle, the clutch must be operated and the desired gear must be engaged. The first device can be a quickshifter, a downshift rev-matching device, or an automatic shifter. In this invention, an automatic shifter is understood to be a system that functions as both a quickshifter and a downshift rev-matching device. With a quickshifter, it is possible to engage a higher gear without releasing the throttle or operating the clutch. For this purpose, ignition and / or fuel injection are briefly interrupted, thereby allowing the load to be unloaded from the transmission and the next gear to be engaged. Conversely, a downshift aid enables downshifting to a lower gear. Here, the load is also unloaded from the transmission. However, this is achieved by briefly increasing the motor speed (short-term fuel injection). The functions and technical implementations of both quickshifters and downshift aids are largely known from the prior art and therefore will not be described in detail in this invention.
[0006] Advantageously, the second device is designed to calculate the shift points for upshifting and / or downshifting. Downshifting precisely into a lower gear (e.g., from second to first gear) is challenging because the engine speed difference is greatest there.
[0007] Preferably, the calculation of the shift point is adaptable. In conventional road driving, the target parameter when calculating the shift point could be, for example, comfort. In this case, the shifting process should be as smooth as possible. In track driving, the target parameter could be, for example, shift safety. This refers to the reliable and sufficiently accurate execution of gear shifts. In particular, downshifting to a lower gear often becomes difficult, especially when the driver selects the wrong shift point and the engine speed is not properly matched or the automatic engine speed matching (short-term fuel injection) is insufficient. Downshifting from second gear to first gear is a particular challenge here because the engine speed difference is relatively large. Especially in fast-moving conditions (such as on a track), subsequent gear skipping may occur. This means that the engaged gear may need to be disengaged again, potentially causing difficult driving conditions for the driver. Advantageously, the appropriate shift point can be calculated via a second device and displayed to the driver. This allows the driver to be notified by signal when to shift gears, ensuring safe gear shifting.
[0008] Suitably, the second device is designed to identify and anticipate or display an upcoming gear shift. Suitably, the second device is designed to identify, for example, whether an upshift or downshift is imminent by means of analysis of the vehicle speed. Accordingly, an optimized shift timing for the next upcoming gear shift is pre-calculated and displayed.
[0009] Suitablely, the second device is also designed to display the arrival of the ideal shift point via a display device.
[0010] Suitablely, the controller is designed to detect and / or calculate different operating parameters to determine shift points. In particular, this enables a clear distinction between upshifts and downshifts, identification of different driving conditions, and the corresponding driving status of the motorcycle (motor speed, engaged gear, operating mode, driving condition, etc.).
[0011] Suitablely, the different operating parameters are selected from at least the following: vehicle speed, motor speed, transmission speed, throttle position, gear level, etc. Suitablely, these operating parameters can be processed by the controller to enable the calculation, especially the pre-calculation, of ideal shift points based on a comfort perspective. High shift comfort is characterized by the smoothest possible gear engagement. Advantageously, vehicle acceleration is kept as constant as possible during gear shifts.
[0012] As previously stated, the first device can be a system that assists in upshifting, downshifting, or both. It should be mentioned in principle that currently, upshifting (especially from a comfort perspective) is relatively straightforward. Downshifting, particularly downshifting to lower gears, is a challenge. However, in this invention, this can be suitably optimized by a second device, resulting in extremely high comfort, or at least reliable operation. Specifically, it ensures that gear shifting is performed with the necessary precision, preventing gear skipping.
[0013] Suitably, the first device is designed to influence, in particular, reduce and / or increase, the motor speed. In the case of upshifting, the influence on motor speed can be achieved, for example, by briefly interrupting ignition and / or fuel injection. In the case of downshifting, motor speed is achieved through a brief throttle jerk (Gasstoß) (e.g., by briefly increasing the fuel injection quantity).
[0014] According to one embodiment, the display device is designed to transmit auditory, visual, and / or tactile information. Suitably, the display device is integrated into a motorized bicycle, for example, in the form of a display screen integrated into the bicycle's cockpit. Alternatively or additionally, the display device may also be integrated into driver equipment, such as into clothing, or into components that are separately arranged or can be arranged on the vehicle. According to one embodiment, a "shift hazard light" known in the prior art may be used for display, for example. A shift hazard light is understood as a device designed to transmit information via optical signals. According to a preferred embodiment, the shift hazard light is constructed as a lamp or bulb designed to emit a light signal when the driver is to shift gears. Preferably, the shift hazard light is designed to use a different color light signal for upshifting than for downshifting.
[0015] In one implementation, the controller is designed to use a different presentation for upshifts than for downshifts. For example, in the case of the aforementioned shift flasher, different colors are used for upshifts and downshifts.
[0016] Other advantages and features will be apparent from the following description of one embodiment of the display device for a motorized bicycle according to the invention. Attached Figure Description
[0017] Here:
[0018] Figure 1 A schematic diagram showing one embodiment of the display device for a motorized bicycle according to the present invention is shown. Detailed Implementation
[0019] Figure 1A schematic view shows a display device 10 that displays an ideal shift point 12 based on operating parameters 16. The operating parameters 16 are, for example, the travel speed, which increases from left to right. Reference numeral 14 indicates the current operating point, i.e., the speed at which the driver is currently moving on their motorized bicycle. An arrow with reference numeral P indicates that the driver is slowing down. A second device calculates the ideal shift point 12, for example, based on the current travel speed, motor speed, transmission speed, and taking into account the engaged gear. Therefore, the driver can recognize that they should optimally shift gears when reaching the section indicated by reference numeral 12, and in the current situation, especially downshift because the travel speed is decreasing. Depending on the operating parameters, it is feasible for the section indicated by reference numeral 12 to "move," or leave its position, or even disappear. If the driver accelerates, the section 12 may, for example, disappear or move to the right. In the display device 10 depicted herein, the shift point is not only displayed but also predicted. The aforementioned section 12 can also be positioned entirely differently. In particular, it can be arranged in the cockpit area, for example, as a (separate) lamp or bulb (shift flasher). The second device can advantageously and optimally assist the driver during gear shifting, especially during downshifting (but also during upshifting), by signaling approach to and / or arrival at the shift point or the corresponding engine speed (also related to the gear). Here, the signaling can be integrated into the vehicle, into the driver's equipment, or by a device carried by the driver, either acoustically, tactilely, or optically, for example, by a shift flasher already known in the prior art. It is advantageous to distinguish between upshifting and downshifting, for example, by different colors in the case of the shift flasher. Suitablely, this can achieve improved comfort (especially in two-person operation) and more sporty performance (in single-person operation and on the track). At the same time, the signaling ensures and trains for safer downshifting up to first gear.
[0020] List of reference numerals
[0021] 10 display devices
[0022] 12 (Ideal) Shift points and ranges
[0023] 14 Current running point
[0024] 16 Operating Parameters
[0025] P arrow
Claims
1. A motorized bicycle comprising a motor and a gear shift transmission, the motor and the gear shift transmission being connected via a clutch, wherein, The motorized bicycle has a first device which is designed to assist the driver of the motorized bicycle in gear shifting without actuating a clutch, and has a second device which is designed to calculate a gear shift point (12), and a display device (10) for displaying and / or communicating the gear shift point (12) to the driver.
2. The motorized foot scooter of claim 1, wherein, The second device is designed to calculate a gear shift point (12) for upshift and / or downshift.
3. The motorized cycle of claim 1 or 2, wherein, The calculation of the gear shift point (12) is adaptable.
4. The motorized cycle of claim 3, wherein, In calculating the gear shift point (12), the target variable is comfort and / or gear shift safety.
5. The motorized foot scooter according to any of the preceding claims, wherein, The second device is designed to recognize and anticipate an upcoming gear shift process.
6. The motorized foot scooter according to any of the preceding claims, wherein, The second device is designed to detect and / or calculate different operating parameters (16) for determining the gear shift point (12).
7. The motorized cycle of claim 6, wherein, The different operating parameters (16) are selected from the following: vehicle speed, motor rotational speed, transmission rotational speed, throttle position, gear step.
8. The motorized foot scooter according to any of the preceding claims, wherein, The first device is designed to influence, in particular to reduce and / or increase, the motor rotational speed.
9. The motorized foot scooter according to any of the preceding claims, wherein, The display device (10) is designed to implement an acoustic, visual and / or haptic communication.
10. The motorized cycle of claim 9, wherein, The display device (10) is designed to use a different presentation or communication for upshift than for downshift.