Compact Utility Vehicle Suspension Layout for Mobility and Sightlines
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Solution Overview
Problem
There is a need for a utility vehicle that balances a smaller overall footprint with mobile attributes, including suspension and all-wheel drive capabilities, while maintaining ergonomic and safety features suitable for military operations.
Innovation Solution
The design incorporates a frame with front and rear ground engaging members, a drivetrain assembly, and a suspension system that includes upper and lower control arms and shock absorbers, along with a steering assembly and brake system, optimized for compactness and mobility, with features like a removable frame portion for powertrain access and a cooling assembly positioned to avoid obstructing the line of sight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the vehicle is designed with a smaller overall footprint, then compactness is improved, but suspension travel and mobility may be compromised
Solution Approach 1:
The suspension system utilizes vertical space and multi-dimensional arrangement of control arms and shock absorbers to achieve adequate suspension travel within a compact footprint. The four-link suspension geometry allows vertical travel without increasing horizontal footprint.
Solution Approach 2:
The suspension components are nested within the vehicle's frame structure, with control arms and shock absorbers integrated into the available space between the frame rails and ground, maximizing space utilization without increasing overall footprint.
2Object-affected harmful factors
If the cooling assembly is positioned to avoid obstructing the line of sight, then safety is improved, but cooling efficiency may be compromised
Solution Approach 1:
The cooling assembly is positioned in the lower front portion of the vehicle, utilizing vertical and depth dimensions rather than horizontal visibility dimensions. This allows the cooling assembly to be out of the operator's line of sight while maintaining adequate airflow for cooling efficiency.
Solution Approach 2:
The vehicle front end is segmented into distinct functional zones: the upper portion maintains clear visibility, while the lower portion houses the cooling assembly, allowing both visibility and cooling requirements to be satisfied simultaneously in different spatial zones.
3Duration of action of moving object
If the suspension system is designed for enhanced travel and stability, then mobility is improved, but device complexity increases
Solution Approach 1:
The four-link suspension system performs multiple functions: it provides suspension travel, maintains wheel alignment, absorbs shocks, and accommodates steering motion. This multi-functionality reduces the need for separate components, managing complexity while achieving enhanced mobility.
Solution Approach 2:
The suspension and steering systems are merged into a integrated four-link geometry that handles both suspension travel and steering articulation, reducing overall system complexity compared to separate suspension and steering mechanisms.
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
The vehicle achieves a compact yet mobile configuration with enhanced suspension travel and stability, supporting military operations while ensuring operator safety and comfort through its ergonomic design and efficient powertrain access.
Implementation Method 1
a shock absorber coupled to the frame at an upper end thereof and to the lower control arm, the shock being positioned between the second and fourth coupling points
Implementation Method 2
a cooling assembly fluidly coupled to the engine and supported by the front section of the frame
Data Source
AI summary
A utility vehicle with ergonomic, safety, and maintenance features is disclosed. A vehicle is also disclosed with improved cooling, suspension and drive systems. These features enhance the utility of the vehicle.