Engine Electronics Bracket Layout for Vibration Damping
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Solution Overview
Problem
Electronic equipment attached to engine head covers is adversely affected by engine vibrations, requiring a simple configuration for effective damping, especially in spatially constrained environments like vehicles.
Innovation Solution
An attachment mechanism with a bracket and elastic support portions disposed such that the maximum distance between support portions parallel to the crankshaft is greater than perpendicular to it, using a grommet between the head cover and bracket to elastically support the equipment, thereby damping vibrations effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic equipment is directly attached to the head cover, then the structure is simple and easy to install, but the vibration from the engine is directly transmitted to the electronic equipment causing adverse effects
Solution Approach 1:
A bracket is introduced as an intermediary component between the head cover and the electronic equipment. The bracket includes elastic support portions that serve as a mediator to transmit and dampen vibration before it reaches the electronic equipment, thus resolving the contradiction between structural simplicity and vibration protection.
Solution Approach 2:
The elastic support portions are designed as simple, inexpensive components that can be easily replaced if needed. These support portions provide effective vibration damping without adding significant complexity or cost to the overall structure.
2Object-affected harmful factors
If a vibration damping structure is added between the head cover and electronic equipment, then vibration transmission is reduced, but the device complexity and spatial requirements increase
Solution Approach 1:
The elastic support portions function as flexible elements that provide vibration damping through their elastic properties. This approach achieves effective vibration isolation using simple flexible components rather than complex mechanical structures, thus minimizing the increase in device complexity.
3Object-affected harmful factors
If the support portions are arranged with larger spacing in the crankshaft direction, then vibration damping is improved, but the bracket size increases making it difficult to install in narrow spaces
Solution Approach 1:
The elastic support portions are strategically positioned at specific locations on the bracket where they provide maximum vibration damping effectiveness. The support portions are located to optimally counteract the vibration patterns in the crankshaft direction while maintaining a compact overall bracket dimensions suitable for narrow installation spaces.
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
This configuration effectively dampens engine vibrations, reducing resonance and adverse effects on attached sensors and equipment, while allowing for easy installation in narrow spaces, and also promotes the discharge of condensed water from engine pipes, minimizing its impact on sensor accuracy.
Implementation Method 1
The support portions are configured to elastically support the bracket with respect to a head cover covering a cylinder head of the engine (100). The support portion may include an elastic body interposed between the head cover and the bottom wall portion.
Implementation Method 2
The electronic equipment may be adversely affected once vibration from the engine is transmitted to the electronic equipment. Desirable in this regard is damping of the vibration during the transmission of the vibration from the engine to the electronic equipment.
Data Source
AI summary
An attachment mechanism for electronic equipment for an engine includes a bracket configured to hold the electronic equipment and a plurality of support portions configured to elastically support the bracket with respect to a head cover of the engine. The support portions are disposed such that a maximum distance between two support portions of the support portions in a direction parallel to a shaft center of a crankshaft of the engine is longer than a maximum distance between the two support portions of the support portions in a direction perpendicular to the shaft center of the crankshaft of the engine.