Auto Throttle Gate With External Pivot Shaft
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Solution Overview
Problem
Conventional throttle structures in internal combustion engines, both for intake and exhaust systems, suffer from fluid flow blockage and turbulence due to the central pivot mounting of the throttle plate and shaft, which reduces engine performance by creating pressure zones and turbulences, especially when the throttle plate and pivot shaft are fully open.
Innovation Solution
The throttle unit is designed with a pivot shaft mounted laterally to the rotation axis, positioned outside the fluid flow passage, allowing the throttle gate to pivot completely out of the flow path or adjacent to the pipe wall, eliminating counter pressure and thermal exposure, and featuring a curved design to enhance flow constancy and linearity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a centrally mounted pivot shaft and throttle plate are used, then the throttle structure can effectively control fluid flow, but the fluid flow becomes divided and blocked, creating turbulence and reducing flow volume
Solution Approach 1:
The invention extracts the pivot shaft and connection mechanism from the fluid flow passage, mounting them on the exterior surface of the pipe. This removes the source of flow division and blockage while preserving the throttle gate's ability to control flow by adjusting its position within the passage.
Solution Approach 2:
The invention transitions the pivot shaft mounting from a two-dimensional position within the flow passage to a three-dimensional position on the exterior surface of the pipe. This spatial relocation eliminates interference with the fluid flow while maintaining rotational control capability.
2Productivity
If a heavy duty large throttle plate and pivot shaft are used, then the throttle structure can handle high flow demands, but the fluid flow blockage and turbulence become material to engine performance
Solution Approach 1:
By extracting the pivot shaft from the flow passage and mounting it on the pipe exterior, the invention eliminates the blockage and turbulence caused by large-duty components while preserving the throttle gate's ability to handle high flow demands through its size and positioning within the passage.
Solution Approach 2:
The invention segments the throttle control system into two functional parts: the throttle gate that remains within the flow passage to control flow, and the pivot shaft connection mechanism that is relocated to the pipe exterior. This separation allows large components to provide flow handling capacity without causing blockage.
3Adaptability or versatility
If the pivot shaft is positioned in the throat, then the throttle plate can be actuated for higher engine demands, but the intake flow volume and velocity are reduced due to blockage and pressure zones
Solution Approach 1:
The invention extracts the pivot shaft from the throat area and relocates it to the pipe exterior, eliminating the blockage and pressure zones that reduced flow velocity while preserving the throttle gate's ability to respond to engine demands through rotational actuation.
4Ease of operation
If the throttle plate and pivot shaft are fully open, then maximum flow control is achieved, but the components remain in the fluid flow path and partially block the flow
Solution Approach 1:
The invention extracts the pivot shaft from the flow path and mounts it on the pipe exterior, allowing the throttle gate to achieve full open position without any component remaining in the fluid flow path, thus maximizing flow volume while preserving flow control capability.
Data Source
AI summary
A fluid flow control unit, in a preferred embodiment, mounted on a section of pipe having a tubular wall forming a fluid flow passage with a flow axis, the unit having a gate section, and a gate pivot section, the pivot section having a body portion mounted on the pipe outer wall surface, a gate mounting cavity formed in the body portion and opening through the pipe wall and providing an access port for the gate section to the mounting cavity, a pivot shaft positioned in the cavity and mounted on bearing structure on the body portion, the diameter of the shaft being dimensioned to allow a laterally curved gate which is affixed to a surface portion of the shaft to pivot up against a ceiling of the pipe to thereby be out of the flow passage main stream at a full open, non-blocking position of the gate, and a gate position control structure on the unit for allowing predetermined degrees of rotation of the pivot shaft in response to the magnitude of fluid flow pressure forces directed against the gate.