Throttle Safety Device with Contact Switch Feedback
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Solution Overview
Problem
Traditional throttle control systems are prone to malfunction due to sticking issues caused by moisture, wear, or foreign objects, leading to uncontrollable high engine speeds and potential safety hazards during vehicle operation.
Innovation Solution
A safety device comprising a linking plate, pulling plate, throttle line, and contact switch that activates the engine control system to reduce engine speed to a slow condition even if the throttle line is stuck, using a torque spring and contact switch to ensure the throttle returns to its original position and contact the switch, which then electrifies the engine control system to manage engine output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the throttle line is used to control the throttle valve, then the throttle can be opened and closed through mechanical linkage, but the throttle line may get stuck due to moisture freezing, wear, or foreign objects, causing uncontrollable high engine speed
Solution Approach 1:
The patent implements a feedback mechanism where a contact switch monitors the throttle valve position and provides signals to the engine control system. When the throttle valve fails to return to its closed position, the contact switch detects this abnormal condition and triggers the engine control system to reduce engine speed, creating a closed-loop safety feedback system that compensates for mechanical failures in the throttle line
Solution Approach 2:
The patent introduces an intermediary electronic control system between the mechanical throttle line and the engine. The contact switch acts as an intermediary sensor that detects throttle position, while the engine control system serves as an intermediary controller that can independently adjust engine speed based on the detected throttle position, decoupling the direct mechanical linkage dependency
2Strength
If the throttle line is tightened to prevent loosening, then the connection becomes more secure, but foreign objects or wear can cause the throttle line to become immovable and stuck
Solution Approach 1:
The contact switch continuously monitors whether the throttle valve has returned to its original closed position after throttle release. If the valve remains open despite throttle line release, the feedback signal triggers the engine control system to reduce engine speed, providing real-time detection and response to sticking conditions without requiring increased mechanical tightness
3Ease of operation
If the throttle lever is released to close the throttle, then the engine speed should reduce, but the throttle valve may remain open due to mechanical failures, causing wild engine operation
Solution Approach 1:
The contact switch is positioned to detect when the throttle valve fails to return to its closed position. Upon detecting the abnormal open condition after throttle release, it provides a feedback signal to the engine control system, which then automatically reduces engine speed to a safe level, creating a reliable safety net that operates independently of the mechanical throttle return mechanism
Solution Approach 2:
The system provides self-protection through automatic detection and response. The contact switch and engine control system work together to monitor throttle position and automatically correct the harmful effect of stuck throttle valve by reducing engine speed, enabling the system to self-correct without external intervention
Data Source
AI summary
A safety device for the throttle operation includes a shaft, a linking plate having an end connected and moving with the shaft and another end provided with an projecting bent wing, a pulling plate having one end formed with a shaft hole for combining with the shaft and located at a side of the bent wing and another end resting on an end surface of the bent wing and connected with a throttle line. The bent wing moves the throttle line to move the pulling plate for an angle for opening the throttle. The safety device further includes a contact switch for contacting the linking plate so an engine control system may be electrified by the contact switch to reduce its speed to a slow condition even if the throttle line is stuck immovable and unable to return to its original position after pulling open the throttle, keeping safe a vehicle.