Seat Vehicle Intake Structure Shortening Path and Isolating Heat
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Solution Overview
Problem
The existing intake structure for seat type vehicles, with the intake port located at the upper portion of the hollow frame, results in a longer air intake path, which is inefficient and prone to air being heated by the engine's heat, affecting both intake and thermal efficiency.
Innovation Solution
The intake structure is redesigned with the engine and fuel tank mounted side by side under the occupant seat, featuring an intake port located under the seat and above the fuel tank, with an intake pipe arranged above the fuel tank to avoid engine interference, and a partition wall between the engine and fuel tank to prevent heat convection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the intake port is provided in an upper portion of the hollow frame, then the engine and air cleaner can be mounted below the driver's seat, but the air intake path becomes longer and air may be heated by engine heat
Solution Approach 1:
The intake port is relocated from the vertical upper portion of the hollow frame to the horizontal space between the driver's seat and fuel tank. This dimensional shift in spatial arrangement shortens the air intake path while maintaining the mounting configuration of engine and air cleaner below the driver's seat, thereby improving intake efficiency without compromising device complexity
2Device complexity
If the intake port is provided in an upper portion of the hollow frame, then the engine and air cleaner can be mounted below the driver's seat, but the taken-in air may be heated with the heat of the engine
Solution Approach 1:
The intake port is extracted from the hollow frame structure and relocated to the space between the driver's seat and fuel tank. This separation removes the air intake path from proximity to the engine, preventing engine heat from heating the taken-in air while preserving the engine and air cleaner mounting arrangement below the driver's seat
3Productivity
If the air intake path is shortened without using the hollow frame, then intake efficiency improves, but the intake port must be provided in the vehicle body portion where air may be heated by engine heat
Solution Approach 1:
The intake port is positioned in a specific local space between the driver's seat and fuel tank that has distinct thermal characteristics - it is short enough to improve intake efficiency but far enough from the engine to avoid heat exposure. This localized positioning achieves both shortened air intake path and protection from engine heat simultaneously
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 shortens the air intake path, enhances intake efficiency, prevents air from being heated by the engine, and improves thermal efficiency by minimizing heat convection, resulting in improved engine performance.
Implementation Method 1
a partition wall may be provided between the engine and the fuel tank. According to this construction, the partition wall serves to prevent the convection of heat
Data Source
AI summary
To provide an intake structure for a seat type vehicle which makes it possible to shorten the air intake path and to prevent the taken-in air from being heated with the heat of an engine. An intake structure for a seat type vehicle is provided in which an engine and a fuel tank are mounted side by side in the lateral direction of the vehicle under the occupant seats attached onto a frame. An air cleaner is arranged to the rear of the engine with an intake port for the air cleaner being provided under the occupant seats and above the fuel tank.