Electronic Locking Differential Feedback for Lock State Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle drivetrains lack a reliable mechanism to detect the locking state of electronic locking differentials, which is crucial for ensuring proper functioning and safe vehicle operations.
Innovation Solution
A differential assembly with an electrically activated locking mechanism and a sensor assembly that includes a position sensing plate and a position sensor to determine the locking state, allowing for detection of the differential's locked or unlocked status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electronic locking differential mechanism is implemented, then torque distribution control is improved, but the ability to detect locking state is insufficient
Solution Approach 1:
The patent implements a feedback mechanism by introducing a sensor assembly that continuously monitors the locking state of the differential mechanism and provides this information to the control system. This allows the system to detect whether the locking mechanism is properly engaged and provides real-time feedback for reliable operation monitoring.
Solution Approach 2:
The patent introduces a position sensing plate as an intermediary component that translates the mechanical locking state into a detectable signal. The sensing plate moves with the locking mechanism and interacts with the sensor to provide indirect measurement of the locking state, solving the problem of direct state detection.
2Measurement precision
If a detection structure is added to determine locking state, then monitoring capability is improved, but device complexity increases
Solution Approach 1:
The sensor assembly serves multiple functions: it detects the locking state, provides feedback to the control system, and enables monitoring of differential mechanism operation. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in overall device complexity.
Solution Approach 2:
The position sensing plate is integrated within the locking mechanism structure, nesting the sensing function within the existing mechanical components. This nesting approach allows the detection structure to be incorporated without significantly increasing the external dimensions or overall complexity of the differential assembly.
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 reliable detection of the locking state, ensuring the differential mechanism functions properly and enhances vehicle performance monitoring, thereby improving safety and operational efficiency.
Implementation Method 1
the position sensor is configured to measure an axial position of the position sensing plate
Data Source
AI summary
The present disclosure relates to an electronic locking differential gear mechanism having a lock detection mechanism for sensing and indication of a locked and unlocked state of the locking mechanism. The electronic locking differential gear mechanism includes an electronic stator which, when activated, rotates a ramped collar about an axis of the mechanism. The ramps of the ramped collar axially displace a plurality of push rods, which displace a locking collar and cause it to engage with a locker gear, placing the mechanism in a locked state. A sensor assembly detects the displacement of a sensing plate which is displaced along with the push rods, and thereby senses whether the mechanism is in a locked or unlocked state.