Fuel Cell Mount Compensation for Steep-Slope Crawler Vehicles
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Solution Overview
Problem
Fuel cell operation in crawler vehicles is inefficient on steep slopes due to unfavorable orientation and product evacuation, which deviates from the optimal orientation required for efficient operation.
Innovation Solution
A compensating device is integrated into the crawler vehicle to incline fuel cells opposite to the chassis inclination, using a support system with dampers and actuators controlled by inclinometers to maintain optimal fuel cell orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the crawler vehicle operates on steep slopes, then the vehicle can perform its function on challenging terrain, but the fuel cells assume an unfavorable orientation that reduces their efficiency
Solution Approach 1:
The fuel cell support is made dynamically adjustable through a compensating device that can change the orientation of fuel cells in real-time. The support can swing about pitch and roll axes to counteract chassis inclination, maintaining optimal fuel cell orientation despite vehicle position changes on steep slopes
Solution Approach 2:
The compensating device uses gravitational force as a counterbalancing mechanism. The support is configured to swing in the opposite direction to chassis inclination, using gravity to naturally counteract the unfavorable orientation caused by steep slope operation
2Device complexity
If the fuel cells are fixed rigidly to the chassis, then the structure is simple and stable, but the fuel cells cannot maintain optimal orientation when the chassis is inclined
Solution Approach 1:
The system transitions from a static rigid connection to a dynamic adjustable connection. The support can swing about pitch and roll axes, allowing the fuel cells to maintain optimal orientation while the chassis remains fixed. This dynamic capability is controlled through dampers and actuators that adjust the support position based on chassis inclination
3Reliability
If the support is allowed to swing freely to compensate for inclination, then the fuel cell orientation is maintained, but oscillations occur that affect stability
Solution Approach 1:
The system incorporates dampers that provide cushioning against oscillations before they become problematic. The dampers are pre-configured to counteract the natural swinging motion of the support, reducing oscillations and stabilizing the fuel cells while still allowing the support to compensate for chassis inclination
Solution Approach 2:
The system uses inclinometers to detect chassis inclination and provides feedback to the control unit. The control unit then activates actuators to adjust the support position accordingly, creating a closed-loop control system that maintains optimal fuel cell orientation while minimizing oscillations through active stabilization
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
Maintains fuel cell efficiency by compensating for chassis inclination, allowing operation on steep slopes with gradients up to 58%, ensuring stable fuel cell performance.
Implementation Method 1
the compensating device comprises at least one damper for connecting said support to the chassis and preventing oscillations of the fuel cells
Implementation Method 2
the compensating device comprises a plurality of actuators for controlling the position of the fuel cells as a function of signals related to the inclination of the chassis of the crawler vehicle
Implementation Method 3
a first inclinometer configured to acquire a signal related to the longitudinal inclination of the chassis of the crawler vehicle and transmit said signal to the control unit, and a second inclinometer configured to acquire a signal related to the lateral inclination of the chassis of the crawler vehicle
Implementation Method 4
fuel cell operation is optimal in terms of efficiency when the fuel cells have a predetermined orientation that favors the oxidation reaction and the evacuation of products from the oxidation reaction
Data Source
Figure 1
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Figure 4~5
AI summary
A fuel cell-powered crawler vehicle has a chassis (2) extending along a longitudinal axis (A); a housing (13) integral with the chassis (2) configured to house fuel cells (12); and a compensating device (17) configured to incline the fuel cells (12) inside the housing (13) in the opposite direction to the inclination assumed by the chassis (2) of the crawler vehicle (1) when the crawler vehicle (1) is in operation along steep ski slopes.