Reluctor Gear Assembly for Interchangeable Drive Tooth Counts
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Solution Overview
Problem
Conventional systems for off-road vehicles require the same number of reluctor teeth as the original powertrain gear to maintain accurate speedometer readings and avoid electronic system modifications when changing powertrain gears, which is not feasible when the new gear has a different number of teeth.
Innovation Solution
A powertrain gear assembly with a separate set of reluctor teeth that remains unchanged, allowing the gear to be replaced with a new powertrain gear having a different number of drive teeth, where the reluctor teeth are either cut into the gear body or provided on a removably mounted ring, ensuring the sensor detects only the rotational movement of the reluctor teeth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the powertrain gear is changed to a new gear with a different number of teeth, then the powertrain performance can be optimized, but the speedometer reading becomes inaccurate and electronic system modification is required
Solution Approach 1:
The invention divides the gear system into two independent functional segments: drive teeth for power transmission and reluctor teeth for sensing. The powertrain gear includes a gear body with drive teeth on the outer circumference and a separate reluctor ring with reluctor teeth on the inner circumference. This segmentation allows the drive teeth to be changed for performance optimization while the reluctor teeth remain unchanged to maintain accurate speedometer readings.
Solution Approach 2:
The reluctor ring acts as an intermediary component between the drive gear and the sensor. It is mounted to the gear body but maintains a separate tooth structure that interfaces with the sensor. This intermediary structure allows the sensor to accurately detect crankshaft position based on reluctor teeth passage, independent of the drive teeth configuration.
2Adaptability or versatility
If the powertrain gear is changed to a new gear with a different number of teeth, then the powertrain performance can be optimized, but the electronic control module requires reprogramming
Solution Approach 1:
The invention divides the gear system into two independent functional segments: drive teeth for power transmission and reluctor teeth for sensing. The powertrain gear includes a gear body with drive teeth on the outer circumference and a separate reluctor ring with reluctor teeth on the inner circumference. This segmentation allows the drive teeth to be changed for performance optimization while the reluctor teeth remain unchanged to maintain accurate speedometer readings.
Solution Approach 2:
The reluctor ring serves as a universal interface component that remains consistent across different powertrain gear configurations. By maintaining the same number and configuration of reluctor teeth regardless of drive tooth variations, the electronic control module can operate with a single program, making the system universal across different gear ratios and performance configurations.
3Device complexity
If the same gear teeth are used for both drive and reluctor functions, then the structure is simplified, but the gear cannot be changed without affecting sensor readings
Solution Approach 1:
The invention divides the gear system into two independent functional segments: drive teeth for power transmission and reluctor teeth for sensing. The powertrain gear includes a gear body with drive teeth on the outer circumference and a separate reluctor ring with reluctor teeth on the inner circumference. This segmentation allows the drive teeth to be changed for performance optimization while the reluctor teeth remain unchanged to maintain accurate speedometer readings.
Solution Approach 2:
The invention adds a dimensional layer to the gear structure by placing the reluctor ring on the inner circumference while drive teeth are on the outer circumference. This spatial differentiation allows both drive and reluctor functions to coexist on the same gear body without interfering with each other, enabling independent optimization of each function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the replacement of powertrain gears without altering the reluctor teeth, maintaining accurate crankshaft position information for the electronic control module and avoiding the need to reprogram the vehicle's electronics, thus ensuring consistent performance and speedometer accuracy.
Implementation Method 1
a set of reluctor teeth that rotates with the gear body and is adapted to cooperate with a sensor to provide a signal indicating the rotation of the reluctor teeth
Data Source
AI summary
A device and method for allowing a powertrain gear in an off-road vehicle to be changed to a second powertrain gear having a different number of drive teeth without changing the number of reluctor teeth, by replacing the first powertrain gear with a second powertrain gear having a different number of drive teeth but the same number of reluctor teeth.