Isolation Valve With Bobbin Solenoid and Locking Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Plug-in hybrid electric vehicles face challenges in preventing evaporation gas discharge due to low engine driving rate, leading to increased power consumption and potential heat-related issues with existing isolation valves during refueling.
Innovation Solution
An isolation valve design featuring a solenoid valve with a bobbin assembly, relief valve, and locking assembly that allows for power-efficient operation by maintaining the opened or closed state without continuous power supply, using a plunger to rotate and selectively pressurize locking elements, and incorporating a two-stage opening structure to manage pressure changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous power is supplied to the solenoid valve to maintain valve state, then reliable valve positioning is achieved, but power consumption increases and heat-related issues occur
Solution Approach 1:
The plunger is designed to rotate by a preset angle upon movement from the opened end toward the closed end, transforming linear electromagnetic force into rotational mechanical action. This dynamic motion enables the plunger to selectively pressurize either the locking element or release element, allowing the valve to maintain its state without continuous power supply.
Solution Approach 2:
The locking assembly with locking element and release element enables the valve to self-maintain its position. Once the plunger pressurizes the locking element, the valve locks in place and maintains that state autonomously without requiring continuous electromagnetic power, thereby reducing power consumption while ensuring reliable valve positioning.
2Speed
If the isolation valve is opened rapidly to relieve pressure, then pressure relief speed is improved, but pressure shock and system instability occur
Solution Approach 1:
The two-stage opening structure prepares the valve for controlled pressure relief in advance. The valve opens sequentially through two stages rather than opening fully at once, allowing pressure to be relieved in a controlled manner that prevents pressure shock while maintaining relatively fast overall pressure relief speed.
3Device complexity
If the plunger moves only linearly in the electromagnetic coil, then electromagnetic force utilization is simplified, but the ability to selectively pressurize locking elements is insufficient
Solution Approach 1:
The plunger is designed to rotate by a preset angle upon movement from the opened end toward the closed end, transforming linear electromagnetic force into rotational mechanical action. This dynamic motion enables the plunger to selectively pressurize either the locking element or release element, allowing the valve to maintain its state without continuous power supply.
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 solution significantly reduces power consumption, prevents evaporation gas discharge, and mitigates heat-related risks, allowing the isolation valve to maintain its state without continuous power and manage pressure changes effectively.
Implementation Method 1
a plunger configured to move in the space by an electromagnetic force generated by the coil
Data Source
AI summary
An isolation valve includes: a housing including a first passage and a second passage; a main valve assembly including a valve disposed in the housing such that a fluid flow between the first passage and the second passage is blocked; a locking assembly disposed in the housing, and including a release element configured to open the valve and a locking element configured to close the valve; and a bobbin assembly configured to be disposed in the housing and to operate the locking assembly, and including a coil; a core disposed inside the coil and including a space therein, the space including a closed end and an opened end; and a plunger configured to move in the space by an electromagnetic force generated by the coil and to contact the locking assembly on the opened end side.