Saddle-riding Vehicle Radiator Fan Cover Airflow Guide
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Solution Overview
Problem
In saddle-riding vehicles with radiators positioned on one lateral side, increased fuel tank size can cause exhaust air to blow onto the rider's leg, deteriorating comfort during driving.
Innovation Solution
The radiator is positioned in front of the engine and on one lateral side of the vehicle body, with a fan cover that guides exhaust air towards the same lateral side, preventing it from reaching the rider's leg.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the fuel tank is increased in size and the shroud is arranged at a more outward position, then the fuel storage capacity is improved, but the exhaust air blows onto the rider's leg causing deterioration in comfort
Solution Approach 1:
The patent introduces a guide wall as an intermediary structure between the radiator and the rider's leg. The guide wall intercepts and redirects the exhaust air flow, preventing it from directly contacting the rider's leg while maintaining the outward position of the shroud for larger fuel tank capacity.
Solution Approach 2:
The guide wall extends in the vehicle widthwise direction to redirect exhaust air flow laterally away from the rider's leg. By utilizing the widthwise dimension, the exhaust air is guided toward the outer lateral side instead of flowing toward the rider's leg area.
2Volume of moving object
If the shroud is arranged at a more outward position to accommodate larger fuel tank, then the fuel tank size is increased, but the exhaust air flow direction changes causing discomfort to rider
Solution Approach 1:
The guide wall serves as a mediator that allows the shroud to be positioned outward for larger fuel tank volume while preventing the negative effect of exhaust air contacting the rider's leg. The guide wall decouples the positional requirement from the harmful flow effect.
3Length of moving object
If the radiator is positioned on one lateral side for compact design, then the vehicle width is reduced, but the exhaust air may reach the rider's leg depending on shroud position
Solution Approach 1:
The guide wall is positioned within the compact vehicle width to intercept and redirect exhaust air flow. It acts as an internal flow control structure that prevents exhaust air from reaching the rider's leg without increasing the overall vehicle width.
Solution Approach 2:
The guide wall utilizes the widthwise direction within the existing vehicle width to redirect exhaust air flow laterally away from the rider's leg, effectively using available spatial dimensions to solve the flow direction problem.
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 effectively suppresses the exhaust air from blowing onto the rider's leg, enhancing comfort and maintaining effective heat dissipation.
Implementation Method 1
a radiator fan that is disposed on a rear face of the radiator body and feeds wind to the radiator body
Implementation Method 2
a fan cover that covers the radiator fan from a rear of the radiator fan to guide exhaust air from the radiator to the one lateral side in a vehicle widthwise direction
Data Source
AI summary
A saddle-riding vehicle includes a radiator in front of an engine of the saddle-riding vehicle and on one lateral side of the vehicle in a vehicle widthwise direction with respect to a center line in the vehicle widthwise direction. The radiator includes: a radiator body that allows coolant of the engine to flow through the radiator body; a radiator fan at a rear face of the radiator body; and a fan cover that covers the radiator fan from a rear of the radiator fan to guide exhaust air from the radiator to the one lateral side in the vehicle widthwise direction.