Compact Utility Vehicle Chassis for AWD, Cooling, and Suspension Travel
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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 all-wheel drive capability and enhanced suspension, while maintaining ergonomic and safety features suitable for military operations.
Innovation Solution
The design incorporates a frame with a front and rear section, featuring a drivetrain assembly with a transfer case and differential positioned along the centerline, a suspension system with upper and lower control arms and shock absorbers, and a steering assembly that maximizes suspension travel and minimizes turning radius, along with a cooling assembly angled to avoid obstructing the line of sight and a brake assembly optimized for compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle uses a conventional suspension layout, then the structure is simple, but the suspension travel is limited and turning radius is large
Solution Approach 1:
The suspension system is divided into separate functional components: upper control arms, lower control arms, and shock absorbers positioned independently. This segmentation allows each component to be optimized for its specific function, enabling greater suspension travel without requiring a completely redesigned integrated structure.
Solution Approach 2:
The shock absorbers are positioned between coupling points in a configuration that utilizes three-dimensional space more effectively. By positioning shocks between specific coupling points rather than along single linear axes, the system achieves enhanced suspension travel and reduced turning radius through spatial optimization.
2Temperature
If the cooling assembly is positioned centrally for efficient cooling, then cooling performance is improved, but it obstructs the line of sight from the cab
Solution Approach 1:
The cooling assembly is positioned asymmetrically at an angle relative to the longitudinal direction of the vehicle rather than centrally. This asymmetric positioning maintains effective cooling by preserving airflow paths while eliminating obstruction of the operator's line of sight, as the assembly is angled away from the direct forward viewing path.
3Length of moving object
If the vehicle is designed with a smaller footprint, then maneuverability is improved, but all-wheel drive capability and suspension effectiveness are compromised
Solution Approach 1:
The suspension system incorporates dynamic positioning of shock absorbers and control arms that can adapt to different operating conditions. The lower control arms are coupled to the axle at positions that optimize both compactness and all-wheel drive performance, allowing the system to maintain effectiveness despite reduced vehicle footprint.
Solution Approach 2:
The drivetrain and suspension components are arranged in three-dimensional space to maximize functionality within a compact footprint. By utilizing vertical and lateral spacing rather than only longitudinal arrangement, the vehicle maintains all-wheel drive capability and effective suspension travel while reducing overall vehicle length and width.
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 size with enhanced mobility, improved suspension travel, and efficient cooling, while maintaining a robust structure for safety and ergonomic comfort, suitable for military operations.
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.