Snowmobile Steering Hoop Frame for Deep Snow Handling

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Solution Overview

Problem

Snowmobile designs for deep snow applications require enhanced features such as longer track lengths and larger engines to handle mountainous environments with less oxygen, but existing configurations often compromise on ride and handling characteristics.

Innovation Solution

The snowmobile incorporates a frame with a steering hoop structure, tunnel assembly, and endless belt system, featuring a motor, steering assembly, and front skis with traction projections, along with a heat exchanger system to manage snow and ice, and an air intake system to reduce noise and improve performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If longer track length and larger displacement engine are used for deep snow applications, then power delivery and reliability in high-elevation environments are improved, but device complexity and ride quality deteriorate

Engineering Contradiction:
Improvepower deliveryVSAvoiddevice complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The snowmobile is divided into modular components including the frame assembly with tunnel and steering hoop, motor assembly, endless belt assembly, and front ski assembly. Each module can be independently designed, assembled, and maintained, reducing overall system complexity while maintaining deep snow performance capabilities through proper component selection and configuration

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The frame assembly serves multiple functions: structural support, heat exchanger integration, steering mechanism mounting, and operator protection. The tunnel structure provides both structural integrity and serves as a heat exchanger for cooling the motor, eliminating the need for separate cooling components and reducing overall device complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Power

If larger displacement engine is used for deep snow applications, then power delivery in low-oxygen environments is improved, but weight of the snowmobile increases

Engineering Contradiction:
Improvepower deliveryVSAvoidweight
Core Design Contradiction:
PowerVSWeight of moving object

Solution Approach 1:

The heat exchanger is integrated into the frame assembly rather than being a separate component. The tunnel structure serves dual purposes as both structural framework and cooling system, reducing the number of separate parts and minimizing overall weight while supporting the larger displacement engine required for deep snow performance

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If features are added to improve ride and handling characteristics, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improveride qualityVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The front ski assembly includes steering spindles or steering arms that enable dynamic steering control, and the endless belt assembly provides adjustable track tension and suspension characteristics. These dynamic features improve ride quality and handling without requiring complex mechanical systems, achieving ease of operation through well-designed movable components

Inventive Principle:
Principle #15Dynamics

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 enhances power delivery, ride quality, and handling in deep snow conditions by providing structural support, improved traction, and efficient cooling and air intake systems, addressing the need for better performance in high-elevation, low-oxygen environments.

Implementation Method 1

heat exchanger system to manage snow and ice

Methodology Applied
Scientific EffectHeat transfer: Heat Exchanger

Implementation Method 2

air intake system to reduce noise

Methodology Applied
Scientific EffectAcoustic absorption: Acoustic Absorption

Data Source

PatentUS8191665B1Snowmobile
Publication Date: 2012.06.05 POLARIS IND INC
  • US8191665B1 patent drawing
  • US8191665B1 patent drawing
  • US8191665B1 patent drawing

AI summary

A snowmobile includes a frame having a steering hoop structure and a tunnel. The steering hoop structure is coupled to first and second side panels of the tunnel and extends above the tunnel. The first and second side panels of the tunnel each include a running board supported by the steering hoop structure. The steering hoop structure includes a toe clip positioned adjacent to each of the running boards.