Air-Cooled V-Type Engine Distributor Placement
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Solution Overview
Problem
Existing air-cooled V-type engines face challenges in effectively utilizing the contained angle space for fuel injection apparatuses and ignition coils, leading to inefficient fuel distribution and cooling of engine components.
Innovation Solution
The strategic placement of a distributor to straddle the contained angle between V-shaped cylinders, with ignition coils mounted on the distributor, allows for efficient fuel distribution and cooling by utilizing the irregular space effectively, and the fan casing guides cooling air to these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distributor and ignition coils are disposed in the contained angle place between V-shaped cylinders, then the space utilization is improved and the high tension cord length is reduced, but the structural complexity increases
Solution Approach 1:
The distributor is positioned in the contained angle place between V-shaped cylinders, utilizing the three-dimensional space effectively. This spatial arrangement in the angular region between cylinders allows compact placement of fuel distribution and ignition components, reducing the length of high tension cords while optimizing space utilization in the engine compartment.
2Productivity
If the distributor is centrally disposed at the contained angle place, then the fuel distribution efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
The distributor serves multiple functions: it distributes fuel to all cylinders, provides mounting for ignition coils, and utilizes the contained angle space for compact engine layout. This multi-functional design consolidates fuel distribution and ignition system components into a single strategic location, improving fuel distribution efficiency while managing manufacturing complexity through functional integration.
3Device complexity
If the ignition coils are mounted on the distributor, then the device complexity is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The ignition coils are mounted on the distributor housing, merging the ignition system components with the fuel distribution system. This consolidation reduces the overall device complexity by eliminating separate mounting structures and connections. The distributor housing serves as a common platform for both fuel distribution and ignition coil mounting, simplifying the overall engine architecture.
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 enhances fuel injection efficiency, reduces the length of high tension cords, and ensures stable engine operation by effectively using the contained angle space for engine accessories, improving cooling and overall engine performance.
Implementation Method 1
This engine can be easily cooled with cooling air sent from the engine cooling fan
Data Source
AI summary
An air-cooled V-type engine includes a crankcase, a cooling fan disposed at the front end of a crankshaft, a fan casing housing the cooling fan, a pair of cylinders projecting to form a V shape from the crankcase as seen in a direction along an axial center of the crankshaft, and cylinder heads. A distributor for distributing supply fuel from a fuel supply apparatus to intake air passages of respective cylinders is disposed to straddle a contained angle place being a place between the cylinders forming the V shape. Ignition coils respectively corresponding to the cylinders are mounted on the distributor. The distributor is mounted on an air cleaner supporting plate disposed at the contained angle place.