Gear Position Sensor Shift Assist for Clutch-Less Quick Gearshifts
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Solution Overview
Problem
Existing vehicle systems face challenges with clutch-less quick gearshift operations due to the need for a robust solution that can assist drivers/rider through quick gearshift operation without the need for a separate device/sensor in the vehicle. Existing systems are inefficient and prone to errors in gearshift operations, and the need for a more efficient and cost-effective solution.
Innovation Solution
A controller that utilizes a gearbox position sensor to determine the rate of change in voltage and activate shift assist functionality, adjusting engine operations such as electronic throttle control, fuel injection, and ignition control to facilitate quick gearshift without a separate shift assist sensor, using existing vehicle components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a separate shift assist sensor is installed to enable clutch-less quick gear shifting, then gearshift operation speed is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the shift assist sensor functionality with the existing gearbox position sensor, eliminating the need for a separate sensor. The controller distinguishes between intentional gearshift requests and inadvertent movements by analyzing signal patterns from the existing sensor, thereby reducing device complexity while maintaining quick gearshift capability
Solution Approach 2:
The existing gearbox position sensor is made multi-functional by programming the controller to interpret its signals for both position monitoring and shift assist detection. This universal usage of the existing sensor eliminates the need for additional dedicated sensors, reducing overall system complexity
2Loss of time
If a separate shift assist sensor is installed for quick gearshift, then gearshift responsiveness is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges the shift assist functionality into the existing sensor system, eliminating the need to manufacture and install a separate expensive sensor. This approach significantly reduces manufacturing costs while maintaining rapid gearshift responsiveness through software-based detection algorithms
Solution Approach 2:
The patent creates a virtual copy of shift assist sensor functionality through software algorithms that process signals from the existing gearbox position sensor. This software-based approach avoids the cost of hardware duplication while achieving similar responsiveness
3Ease of operation
If shift assist sensor is used for quick gearshift, then clutch-less gear shifting is enabled, but false gearshift activation occurs due to play in gearbox assembly
Solution Approach 1:
The patent implements feedback mechanisms where the controller continuously monitors signals from the gearbox position sensor and compares them against predefined thresholds and patterns. This feedback loop enables the system to distinguish between intentional gearshift requests and false activations caused by gearbox play or inadvertent pressure
Solution Approach 2:
The controller is pre-programmed with decision logic that evaluates multiple signal parameters before activating gearshift. This preliminary analysis of signal patterns, duration, and magnitude prevents false activation while maintaining ease of operation for legitimate gearshift requests
4Ease of operation
If shift assist sensor is used for quick gearshift, then gearshift operation is simplified, but inadvertent activation occurs due to play in gearbox assembly
Solution Approach 1:
The system uses feedback from the gearbox position sensor to continuously monitor gear lever position and detect intentional versus inadvertent movements. The controller analyzes signal patterns to confirm genuine gearshift intent before activation, preventing inadvertent operation while maintaining simplicity
Solution Approach 2:
The patent implements dynamic threshold adjustment where the activation criteria change based on operating conditions and signal characteristics. This dynamic evaluation adapts to different scenarios, maintaining ease of operation for intentional shifts while blocking inadvertent activations caused by gearbox play
Data Source
AI summary
The vehicle comprises a Gearbox Position Sensor (GPS). The controller is adapted to receive input signals from the GPS, compare a value of the input signal with a predetermined threshold value, and activate a shift assist functionality based on the comparison. The value of the input signal is any one selected from a group comprising voltage and an angle. Further, the shift assist functionality comprises adjustment of engine operation by at least one of Electronic Throttle Control, a fuel injection control, ignition control. The controller is in connection with the Electronic Throttle Body, a fuel injector and an ignition system respectively for the adjustment/control of the engine operation. A robust solution of achieving quick shift functionality is achieved by using the existing GPS of the vehicle. The implementation cost of new and existing vehicle is reduced.