ATV Radiator Positioning for Compact Cooling

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional all-terrain vehicles have a large front section due to the placement of the radiator forward of the front frame, making them less compact and vulnerable to soil and water contact, which complicates engine cooling and operability.

Innovation Solution

The radiator is positioned between the front end of the vehicle body frame and the shock absorbers, overlapping with the headlight units, and is placed away from the vehicle body cover, allowing for a compact configuration that prevents soil and water contact while enhancing cooling performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the radiator is disposed forward of the front frame to achieve reliable engine cooling, then the cooling performance is improved, but the vehicle size becomes large and the radiator is vulnerable to soil and water contact

Engineering Contradiction:
Improveengine cooling performanceVSAvoidvehicle size
Core Design Contradiction:
TemperatureVSVolume of moving object

Solution Approach 1:

The radiator is repositioned from a horizontal arrangement (forward of the front frame) to a vertical arrangement (overlapping with the headlight units in the longitudinal direction). This dimensional change allows the radiator to be placed in the vertical space above the headlight units, eliminating the need for additional horizontal space while maintaining cooling performance.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The radiator is nested within the space defined by the vehicle body frame and headlight units. By positioning the radiator to overlap with the headlight units in the longitudinal direction and place it within the transverse boundaries of the vehicle body frame, the radiator utilizes existing structural space rather than requiring additional external space.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Temperature

If the radiator is disposed forward of the front frame to achieve reliable engine cooling, then the cooling performance is improved, but the radiator becomes vulnerable to contact with soil and water

Engineering Contradiction:
Improveengine cooling performanceVSAvoidsoil and water contact
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The vehicle body frame acts as an intermediary protective structure between the radiator and the external environment (soil and water). By positioning the radiator within the space defined by the vehicle body frame and behind the front cover, the frame provides a protective barrier that shields the radiator from direct contact with harmful external factors while maintaining its cooling function.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The radiator is nested within the protective enclosure formed by the vehicle body frame and front cover. This nested positioning places the radiator in a protected internal space rather than exposing it to the external environment, preventing direct contact with soil and water while maintaining cooling effectiveness.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of operation

If a large space is provided between the seat and front panel for driver operability, then the operability and riding comfort are improved, but the front section size becomes large

Engineering Contradiction:
Improvedriver operabilityVSAvoidfront section size
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The radiator is repositioned to utilize vertical space (overlapping with headlight units in the longitudinal direction) rather than consuming horizontal space in the front section. This dimensional redistribution allows the front section to be more compact while maintaining adequate space for driver operability between the seat and front panel.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 results in a more compact vehicle design with improved cooling efficiency and protection from soil and water, allowing for a larger radiator and better operability.

Implementation Method 1

the radiator is disposed longitudinally rearward of the front frames in the transverse side view of the vehicle while disposed longitudinally forward of the shock absorbers in the transverse side view of the vehicle

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

the radiator and the head light units substantially vertically overlap with each other in the transverse side view of the vehicle

Methodology Applied
Scientific EffectHeat radiation: Thermal Radiation

Data Source

PatentUS20110094812A1All terrain vehicle
Publication Date: 2011.04.28 YAMAHA MOTOR CO LTD
  • US20110094812A1 patent drawing
  • US20110094812A1 patent drawing
  • US20110094812A1 patent drawing

AI summary

An all terrain vehicle includes a pair of right and left front wheels, at least a pair of right and left rear wheels, a vehicle body frame, a pair of right and left first roof supports, a pair of right and left second roof supports, a pair of right and left roof members, a seat, a front panel, a front gear case, a pair of front suspensions, a vehicle body cover, a radiator and a pair of head light units. The vehicle body frame includes a pair of upper frames, a pair of lower frames and a pair of front frames. The first roof supports are provided at lateral sides of the vehicle body frame in a transverse direction of the vehicle. The second roof supports are provided at lateral sides of the vehicle body frame in the transverse direction of the vehicle. The right roof member connects an upper portion of the right first roof support and an upper portion of the right second roof support, whereas the left roof member connects an upper portion of the left first roof support and an upper portion of the left second roof support. The vehicle body cover covers front of the vehicle body frame. The radiator is positioned longitudinally rearward of the front frames while positioned longitudinally forward of the front suspensions in a transverse side view. The radiator is also positioned in a transverse center of the vehicle. The head light units are positioned above the radiator in the transverse side view. The head light units also longitudinally overlap with the radiator.