Pneumatic Clutch Actuator Length Adjustment for Disc Wear
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Solution Overview
Problem
Existing clutch actuator systems face performance degradation due to wear of the clutch disc friction surface, leading to increased travel distance and reduced system response time, as the pneumatic clutch actuator requires additional compressed air to compensate for the worn surface, resulting in decreased performance.
Innovation Solution
The pneumatic clutch actuator incorporates an adjustment mechanism, including a locking element and release ring, which adjusts the total length of the piston assembly to compensate for wear, minimizing dead volume and maintaining consistent performance by ensuring a predetermined distance between the piston and bearing assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the clutch disc friction surface wears and becomes thinner, then the distance of travel for the clutch disc friction surface to the flywheel increases, but the system response time decreases and performance degrades
Solution Approach 1:
The piston assembly incorporates an adjustable length mechanism that dynamically adapts to compensate for clutch disc wear. The lock ring and release ring enable the piston assembly length to be modified, ensuring the piston remains at a predetermined distance from the bearing assembly regardless of clutch disc thickness reduction, thereby maintaining consistent system response time.
Solution Approach 2:
The invention changes the physical parameter of piston assembly length to compensate for wear. By adjusting the piston assembly length using the locking mechanism, the system maintains optimal performance parameters despite the changing condition of the clutch disc friction surface.
2Reliability
If additional compressed air is supplied to compensate for worn clutch disc surface, then the clutch can still engage, but energy consumption increases and performance decreases
Solution Approach 1:
The adjustment mechanism performs preliminary action by proactively compensating for wear before it significantly impacts performance. By adjusting the piston assembly length in response to wear detection, the system maintains optimal engagement conditions without requiring excessive compressed air, thus preventing energy waste while ensuring reliable clutch engagement.
3Device complexity
If the piston assembly length remains fixed, then the structure is simple, but wear compensation is impossible and performance degrades over time
Solution Approach 1:
The piston assembly is segmented into adjustable components including the lock ring and release ring mechanism. This segmentation allows independent adjustment of the piston assembly length while maintaining the overall structural integrity, enabling wear compensation without excessive complexity.
Solution Approach 2:
The adjustment mechanism enables self-service functionality where the system can compensate for its own wear through the adjustable piston assembly. The lock ring and release ring provide a self-contained mechanism for maintaining optimal performance without requiring external intervention or complex control systems.
Data Source
AI summary
A pneumatic clutch actuator includes an actuator housing, a piston assembly, a bearing carrier, and a locking element. The piston assembly is disposed within the actuator housing and is movable between a first position and a second position. The piston assembly has a piston head, an elongate member extending from the piston head, and a lock ring coupled to the elongate member. The bearing carrier supports a bearing and is slidably disposed on a portion of the actuator housing. The locking element is operatively connected to the piston assembly and engages the bearing carrier to adjust a total length of the piston assembly as the piston assembly moves from the second position towards the first position to compensate for wear of the clutch assembly.