Distributor Heat Insulation Layout for Stable Ignition Timing
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Solution Overview
Problem
Conventional distributors face issues with high temperature resistance due to semiconductor components and a large volume caused by the gear mechanism, leading to reduced service life and engine performance, as well as interference with peripheral components during ignition angle adjustments.
Innovation Solution
A distributor design incorporating a heat insulation pad between the ignition device and transmission device, which isolates heat from the engine and dissipates heat from the ignition device, maintaining a stable operating temperature and reducing volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semiconductor circuits are used to control ignition timing in a conventional distributor, then wear of platinum contacts and volume can be reduced, but the distributor withstands high temperature causing low service life and reliability
Solution Approach 1:
A heat insulation pad is introduced as an intermediary component between the ignition device and transmission device. This pad blocks heat transmission from the high-temperature engine environment to the temperature-sensitive semiconductor circuits, allowing reliable operation while maintaining the compact design enabled by semiconductor technology.
2Speed
If the relatively small gear and relatively large gear are disposed on the same plane in the transmission gear mechanism, then the rotation speed of the driven shaft can be reduced, but the radial width becomes large causing the total volume to be large
Solution Approach 1:
The transmission gear mechanism transitions from a two-dimensional same-plane arrangement to a three-dimensional spatial arrangement. The driving shaft and driven shaft are positioned at different heights (vertical dimension), with gears meshing in space rather than on the same plane. This dimensional change reduces radial width while achieving the required speed reduction.
3Speed
If the distributor volume is large due to the transmission gear mechanism, then the rotation speed can be reduced, but the distributor interferes with peripheral components during ignition angle adjustments
Solution Approach 1:
By arranging gears in three-dimensional space rather than on the same plane, the radial footprint is minimized. This compact spatial arrangement reduces interference with peripheral engine components, enabling easier ignition angle adjustments while maintaining the necessary speed reduction function.
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 increases the service life and stability of the distributor by maintaining a stable operating temperature and reducing interference with other engine components, while minimizing volume and improving ignition angle adjustments.
Implementation Method 1
heat from the engine can be effectively isolated and heat from the ignition device can also be dissipates by the heat insulation pad
Data Source
AI summary
A distributor with heat dissipation effect has an ignition device having includes a distributor upper cap, a rotor assembly and a distributor bowl-shaped lower cap, a transmission device connected between the distributor bowl-shaped lower cap and the rotor assembly, and a heat insulation pad held between the distributor bowl-shaped lower cap and the transmission device. When the distributor is assembled on an engine, heat from the engine can be effectively isolated and heat from the ignition device can also be dissipates by the heat insulation pad.