Integrated Throttle Shutoff Mechanism for Emergency Engine Shutdown
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Solution Overview
Problem
Internal combustion engines face challenges in safely inhibiting operation during failures or uncontrolled fuel/air flow, with existing solutions like air shutoff valves not effectively addressing emergency shutdowns and component failure scenarios.
Innovation Solution
A fluid supply system with a throttle assembly and integrated fluid shutoff assembly, featuring a shaft system, locking mechanism, biasing member, and releasing mechanism, which allows for precise control of valve movement to shut off fluid flow, ensuring safe engine operation by decoupling and coupling shafts to maintain a fully closed position during trigger events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an air shutoff valve is introduced to shut off airflow during emergencies, then uncontrolled engine operation is prevented, but the system complexity increases with separate valve and control mechanisms
Solution Approach 1:
The patent merges the fluid shutoff assembly with the existing throttle valve by coupling the shutoff shaft to the throttle valve shaft through a common coupling mechanism. This integration allows the shutoff function to be achieved without adding a completely separate valve and control system. The coupled shafts enable coordinated movement where the shutoff mechanism can override the throttle valve position, providing emergency shutdown capability while reducing overall system complexity compared to independent systems.
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
The system effectively shuts off fluid flow to the engine during emergency conditions, preventing uncontrolled operation and ensuring safety by maintaining a fully closed valve position, even in the presence of electrical failures or dithering issues.
Implementation Method 1
a biasing member fixedly attached to the second shaft and engaged with the locking member applying a biasing force to the locking member when the second shaft is in the first position
Implementation Method 2
a releasing mechanism operable to move the locking member relative to the biasing member and release the biasing member from contact with the locking member, wherein the biasing member moves the second shaft to a second position in response to the release
Data Source
AI summary
The present disclosure relates to a fluid supply system for a machine. The fluid supply system includes a throttle assembly having a first shaft attached to a valve member and a fluid shutoff assembly. The fluid shutoff assembly includes a second shaft, a locking member having an axis parallel to an axis of the second shaft and comprising a locking arm extending toward the second shaft, a biasing member fixedly attached to the second shaft, a releasing mechanism adjacent to the locking member that rotates the locking member about the longitudinal axis of the locking member, and a coupler comprising a first coupling hub attached to the first shaft and a second coupling hub attached to the second shaft and interfaced with the first coupling hub.