Hydraulic Section Ventilation via Segmented Line Design
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Solution Overview
Problem
In hydraulic sections for vehicle clutch actuation, air accumulation at the slave cylinder affects disengagement travel, and a continuously rising hydraulic line is often not feasible due to installation space constraints, hindering effective ventilation.
Innovation Solution
A hydraulic section with a ventilating device that divides the hydraulic line into siphon and riser sections, creating a chamber with a height difference to facilitate air buoyancy, allowing air to escape through the master cylinder without additional components and maintaining a non-rising line configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hydraulic line is laid to rise continuously in the direction of the master cylinder, then air can escape via buoyancy forces, but installation space constraints prevent this configuration
Solution Approach 1:
The hydraulic line is segmented into two functional sections: a siphon section that extends upward from the slave cylinder and a riser section that connects to the master cylinder. This segmentation allows the system to achieve ventilation functionality without requiring a continuously rising line configuration, thus resolving the contradiction between ventilation effectiveness and installation space requirements.
Solution Approach 2:
The invention introduces a spatial dimension by creating a chamber that receives both the siphon and riser line sections. The line sections are guided together into this chamber where they are spaced apart, allowing the siphon to extend upward while the riser connects horizontally or at a different angle to the master cylinder, thereby achieving effective ventilation without continuous vertical rise.
2Reliability
If additional components are added to enable ventilation, then air can escape effectively, but the device complexity increases
Solution Approach 1:
The master cylinder is designed with multi-functionality: it serves both as a hydraulic actuator and as a ventilation chamber. The chamber in the master cylinder receives both the siphon and riser line sections, allowing air to accumulate and escape while maintaining hydraulic functionality. This eliminates the need for separate ventilation components.
Solution Approach 2:
The invention merges the ventilation function with the existing master cylinder structure. The chamber that would normally be part of the master cylinder's internal volume is utilized to receive and accommodate both line sections, combining the ventilation pathway with the hydraulic actuator's existing structure rather than adding separate ventilation components.
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
Ensures effective ventilation of the hydraulic section during operation, preventing air from moving back to the slave cylinder during disengagement and optimizing fluid flow to enhance clutch actuation performance.
Implementation Method 1
air can escape into the reservoir via the snifting bore of said master cylinder
Implementation Method 2
line sections of the hydraulic line which act as siphon and riser
Data Source
AI summary
A hydraulic section (1) for actuating a vehicle clutch having a master cylinder (3), a slave cylinder (2) and a hydraulic line (4) which connects both cylinders and is divided into two line sections by a ventilating device (5). The line sections of the hydraulic line which act as a siphon (4a) and a riser (4b) are guided together to said ventilating device (5), such that they are spaced apart from one another, in a chamber which is formed from at least one of these ends.