Vehicle Alternator Relocation via Transmission Shaft
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Solution Overview
Problem
Existing energy generation systems in public passenger transport vehicles face challenges such as space overcrowding, destabilization of engine weight ratios, reduced alternator efficiency due to high temperatures, and inefficient energy recovery, particularly with increased alternator power and number.
Innovation Solution
An electrical power generation system that positions alternators outside the engine compartment along the transmission shaft, symmetrically attached to the vehicle frame, using a belt drive mechanism for mechanical coupling, which reduces temperature exposure and allows for more efficient energy recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of alternators is increased to compensate for high temperature efficiency loss, then the total electrical power output is improved, but the space occupied around the engine increases and the weight distribution becomes destabilized
Solution Approach 1:
The alternators are extracted from the engine compartment and relocated to positions outside the engine, specifically mounted on the vehicle frame along the transmission shaft axis. This extraction removes the space-consuming alternators from the crowded engine area while maintaining their power generation function through mechanical coupling via the transmission shaft.
Solution Approach 2:
The alternators are positioned in a different spatial dimension - outside the engine compartment along the transmission shaft axis rather than within the engine block. This dimensional relocation allows for multiple alternators to be installed without compromising engine compartment space and enables symmetric weight distribution.
2Device complexity
If the alternators are positioned close to the engine to be mechanically coupled with the crankshaft, then the mechanical coupling is simplified, but the temperature exposure increases and efficiency is reduced
Solution Approach 1:
The transmission shaft acts as an intermediary element between the engine crankshaft and the alternators. It transmits rotational mechanical energy from the engine to the alternators while allowing physical separation, thus enabling the alternators to operate in cooler temperatures away from the engine heat while maintaining efficient mechanical coupling through the shaft connection.
3Area of stationary object
If the alternators are positioned outside the engine compartment along the transmission shaft, then the space usage is optimized and temperature exposure is reduced, but the mechanical coupling complexity increases
Solution Approach 1:
The transmission shaft serves multiple functions: it transmits power from the engine to the wheels for vehicle propulsion and simultaneously serves as a mechanical coupling to drive the alternators for electrical power generation. This multi-functionality eliminates the need for separate coupling mechanisms, simplifying the overall system despite the relocated alternator positions.
4Power
If larger cables and belts are used to compensate for high temperature efficiency loss, then the electrical power output is maintained, but the space requirements and material usage increase
Solution Approach 1:
The solution converts the harmful high-temperature environment into a benefit by relocating the alternators away from the engine heat. This eliminates the efficiency loss that would otherwise require oversized cables and belts, thereby reducing material consumption while maintaining the required electrical power output through optimal operating conditions.
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 optimizes space usage, stabilizes engine weight ratios, improves alternator efficiency, reduces cable and belt size requirements, and enhances energy recovery by positioning alternators downstream of the engine, minimizing heat and mechanical losses.
Implementation Method 1
at least one alternator is normally used, which is arranged near the vehicle's engine and which converts a portion of the rotational energy of the crankshaft into electrical energy
Implementation Method 2
using a belt drive mechanism for mechanical coupling
Data Source
Figure 1
Figure 2~3
AI summary
A vehicle (1) comprising an engine (6), a frame (3) and at least one pair of driving wheels (4) carried by the frame (3) and mechanically coupled by means of a transmission shaft (8) to the engine (6), the vehicle (1) further comprising an energy generation system (10) mechanically coupled to the transmission shaft (8) for generating electrical energy by using the rotational energy of the transmission shaft (8).