Engine Air Intake Throttle Control Circuit Board Positioning
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Solution Overview
Problem
The arrangement of electronic control units adjacent to the engine body in engines with electronically controlled throttles limits the efficient use of space around the throttle, as it interferes with nearby components and restricts the installation of additional components.
Innovation Solution
The electronic control unit is positioned on a side of the throttle body facing away from the engine body, allowing for better spacing and enabling the installation of additional components by arranging the control circuit board and other components in a configuration that reduces interference and optimizes the use of available space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic control unit is arranged adjacent to the engine body, then the control unit is protected from foreign objects, but the space around the throttle cannot be used efficiently
Solution Approach 1:
The control circuit board is repositioned from a location between the throttle body and engine body to a different spatial dimension - specifically to the side of the throttle body facing away from the engine body. This dimensional relocation resolves the space conflict while maintaining protection, as the control unit remains integrated with the throttle assembly but occupies a different spatial plane that does not interfere with surrounding components.
2Reliability
If the control circuit board is arranged between the throttle body and engine body, then the control unit is protected, but space interference with nearby components increases
Solution Approach 1:
The control circuit board is extracted from the congested space between the throttle body and engine body and relocated to the outer side of the throttle body. This extraction removes the source of space interference while maintaining the protective function, as the control unit remains part of the integrated throttle assembly and benefits from the throttle body's protective structure.
3Area of stationary object
If the throttle body is arranged closer to the engine body, then space is saved, but the control circuit board interferes with additional component installation
Solution Approach 1:
By relocating the control circuit board to the side of the throttle body facing away from the engine body, the patent creates additional usable space between the throttle body and engine body. This dimensional rearrangement enables the installation of additional components in the previously occupied space, thereby improving adaptability and versatility without sacrificing space utilization.
Data Source
AI summary
An engine air intake structure includes an electronically controlled throttle and an air intake pipe which delivers intake air to an air intake port of the engine. The electronically controlled throttle is attached to the air intake pipe. The electronically controlled throttle includes: a throttle valve which regulates the amount of air to be supplied to the engine; a throttle body which accommodates the throttle valve therein; and an electronic control unit which controls the throttle valve. The electronic control unit includes a control circuit board which is arranged to a side of the throttle body which faces away from an engine body of the engine.