Modular Idle Air Control Plunger for Multi-Passage Throttle
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Solution Overview
Problem
Conventional idle air control devices are limited in their functionality, requiring separate designs for single and plural opening control types, leading to increased production costs due to the need for different valve seat and bypass air passage configurations.
Innovation Solution
A modular design is introduced where a single opening control type idle air control device is modified by adding a cylindrical plunger and collar assembly, allowing the device to function as both single and plural opening control types, utilizing a brass plunger and synthetic resin collar for easy mounting and cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate designs are used for single opening control type and plural opening control type idle air control devices, then each device can be optimized for its specific application, but production cost increases due to the need for different valve seat and bypass air passage configurations
Solution Approach 1:
The patent applies universality by designing a single idle air control device that can function as both single opening control type and plural opening control type through a modular plunger assembly. The plunger can be configured with different numbers of openings (one or multiple) and positioned in different locations on the valve body, allowing the same basic device structure to serve multiple applications. This eliminates the need for separate device designs for different applications, thereby reducing production costs while maintaining application-specific optimization.
2Adaptability or versatility
If a single opening control type idle air control device is modified to function as plural opening control type by adding a plunger assembly, then device versatility improves and production cost reduces, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the idle air control device into modular components: a base valve body assembly and a separate plunger assembly. The plunger assembly can be independently manufactured and then attached to the valve body, allowing for simplified production processes. This modular segmentation reduces the complexity of manufacturing the entire device as a single integrated unit, while still achieving the versatility of serving both single and plural opening control applications.
Solution Approach 2:
The patent applies the nested doll principle by positioning the plunger assembly within the existing valve body structure. The plunger is inserted into a cavity or mounting area on the valve body, utilizing the existing structural space rather than requiring additional external components. This nesting approach minimizes the increase in overall device complexity while achieving the desired functional versatility.
3Ease of manufacture
If a modular design with plunger and collar assembly is used, then ease of manufacture improves and production cost reduces, but manufacturing precision requirements increase for the locking step parts and elastic ring
Solution Approach 1:
The patent applies parameter changes by using an elastic ring with specific material properties (elasticity) to accommodate variations in manufacturing precision. The elastic ring can deform to compensate for minor dimensional variations in the locking step parts, reducing the stringency of precision requirements. Additionally, the collar assembly can be manufactured with standard tolerances and then adjusted through elastic deformation to achieve the required locking function, thereby maintaining ease of manufacture while meeting precision requirements.
Data Source
AI summary
To provide a plural openings control type idle air control device with a low cost by adding a few parts for controlling plural bypass air passages to a single openings control type idle air control device for opening and closing a single bypass air passage, a valve body 3 is formed at a lower end part of a valve body driving mechanism 1 along the operating direction X-X of the valve body driving mechanism 1, a cylindrical plunger 5 is mounted on an outer periphery of the valve body 3, plural bypass air passages 16a, 16b connected with plural intake passages are provided to be opened on a side wall of a valve body storage chamber 13, and plural openings of the bypass air passages are controlled so as to be opened and closed by the plunger 5 slidably provided in the valve body storage chamber 13.