Engine Brake Test Tool for Slave Piston Health Assessment
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Solution Overview
Problem
Existing engine brake systems face challenges in testing the health of the slave piston, as it is impractical to test during engine operation due to high-pressure oil flow, and a separate test fixture would be costly and cumbersome.
Innovation Solution
An engine brake test tool that allows pressurized fluid from an external source to actuate the slave piston, mimicking the engine braking function while preventing engine oil flow, enabling safe and inexpensive assessment of the slave piston's functionality within the engine brake system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If testing is performed during engine operation, then the slave piston can be tested under actual working conditions, but high-pressure oil flow makes testing impractical and unsafe
Solution Approach 1:
The patent extracts the slave piston from the high-pressure oil environment by blocking the oil inlet line and using an external fluid source connected to the oil outlet line, allowing testing to occur outside the harmful high-pressure oil flow conditions while maintaining testing relevance
Solution Approach 2:
The patent introduces an external fluid source as an intermediary to actuate the slave piston during testing, replacing the normal high-pressure engine oil with a controllable external fluid source that enables safe testing while mimicking operational conditions
2Reliability
If a separate test fixture replicating the brake system is used, then comprehensive testing can be performed, but the test fixture becomes costly and cumbersome
Solution Approach 1:
The patent creates a simplified copy of the actuation mechanism by connecting an external fluid source to the oil outlet line, replicating the essential testing function without needing a complete brake system test fixture, thereby reducing complexity and cost while maintaining testing effectiveness
Solution Approach 2:
The patent makes the existing brake system components multi-functional by enabling them to serve both their normal operational function and testing function through the same hardware architecture, eliminating the need for separate dedicated test fixtures
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 effective testing of the slave piston's movement and health without disassembling components, reducing costs and complexity, and allowing for observations of defects or issues such as stiction and incomplete extension, thereby ensuring the engine brake system's effectiveness.
Implementation Method 1
allows pressurized fluid from an external source to actuate the slave piston
Implementation Method 2
preventing engine oil flow, enabling safe and inexpensive assessment
Data Source
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AI summary
An engine brake test tool includes a fitting configured to be secured within a valve opening in an engine brake system, wherein the fitting includes a first opening configured to be placed into fluid communication with a pressurized fluid source and a second opening configured to be placed into fluid communication with an oil outlet line leading to a slave piston of an engine brake system.