Transmission-Driven Supercharger Layout for Cleaner Engine Ducting
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Solution Overview
Problem
Existing supercharging systems for internal combustion engines face challenges in optimizing exhaust and intake duct paths without using an electric motor, which can lead to unfavorable geometries, increased weight, and higher costs.
Innovation Solution
A supercharged internal combustion engine system that utilizes a compressor driven by the transmission shaft, eliminating the need for a dedicated electric motor, and integrates a turbine unit to generate electrical energy, which powers the compressor, optimizing duct paths and reducing weight and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a turbocharger is used to supercharge the internal combustion engine, then the volumetric efficiency and power output are improved, but the device complexity increases due to the need for side-by-side arrangement of intake and exhaust ducts
Solution Approach 1:
The patent separates the supercharging function from the exhaust system by using a centrifugal compressor driven by a belt from the crankshaft, rather than a turbocharger driven by exhaust gases. This segmentation allows the intake and exhaust ducts to be independently arranged, simplifying the overall duct geometry and reducing device complexity while maintaining power output improvements
2Device complexity
If the compressor is driven by the drive shaft, then the device complexity is reduced, but the intake duct geometry becomes unfavorable due to the compressor's position near the drive shaft
Solution Approach 1:
The patent introduces a belt as an intermediary transmission element between the crankshaft and the centrifugal compressor. This allows the compressor to be positioned optimally for intake duct geometry while still being driven by the engine's rotational motion, thus achieving both favorable duct shape and reduced device complexity
3Shape
If a dedicated electric motor is used to drive the compressor, then the intake duct geometry is optimized, but the weight and cost increase
Solution Approach 1:
The patent employs a centrifugal compressor that is self-driven through belt transmission from the engine's crankshaft, eliminating the need for a dedicated electric motor. This self-service approach maintains optimized intake duct geometry while significantly reducing weight and cost by using existing engine rotational energy rather than adding an independent power source
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 system optimizes exhaust and intake duct paths, reduces weight and cost, and maintains efficient operation by utilizing the transmission shaft to drive the compressor, while also generating electrical energy for compressor operation.
Implementation Method 1
a centrifugal compressor which compresses the sucked air
Implementation Method 2
the centrifugal compressor being driven by a belt from the crankshaft
Data Source
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AI summary
A car (1) having two front wheels (2); two rear drive wheels (4); a supercharged internal combustion engine (5) which is provided with a plurality of cylinders (18) with which respective pistons (19) slide and a drive shaft (20) connected to the pistons (19); a compressor (49) configured to compress air suited to be sucked by the supercharged internal combustion engine (5); a transmission (7) which is interposed between the internal combustion engine (5) and the rear drive wheels (4) and has: a drum (64) which is brought into rotation by the drive shaft (20), at least one clutch (65) contained in the drum (64) to receive the motion from the drum (64), and a primary shaft (66) connected to the clutch (65); and an actuating system (83) which connects the drum (64) of the transmission (7) to the first compressor (49) so as to receive the motion from the drum (64) of the transmission (7) to cause the rotation of the first compressor (49).