Vehicle Control System for Airflow Restricted Areas
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Solution Overview
Problem
Vehicle systems face power output reduction and overheating issues when traveling through tunnels or areas with limited airflow, leading to decreased performance and operational limitations due to insufficient oxygen and ventilation, which affects both engine-powered and electric vehicles.
Innovation Solution
A control system that includes communication devices and processors on vehicle systems to monitor ambient conditions and adjust power output settings for lead and trail propulsion vehicles, optimizing power distribution to maintain maximum total power output and prevent overheating by reducing the power output of lead vehicles when entering airflow-restricted areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If engines operate at full power output in airflow restricted areas, then propulsive force is maximized, but oxygen intake becomes insufficient and exhaust is reintroduced into engines
Solution Approach 1:
The patent implements dynamic adjustment of engine power output based on real-time ambient condition monitoring. The control system continuously monitors oxygen levels, temperature, and other parameters in airflow restricted areas, and dynamically modulates engine power output to maintain optimal operation within safe thresholds, preventing oxygen depletion and exhaust reintroduction while maximizing propulsive force when conditions permit.
2Productivity
If vehicles travel faster through tunnels, then productivity improves, but heat dissipation becomes insufficient due to reduced airflow
Solution Approach 1:
The patent employs feedback control mechanisms where sensors continuously monitor ambient temperature, oxygen levels, and vehicle operating temperatures. This feedback information is fed to the control system which adjusts power output and cooling system operation in real-time. The system balances travel speed objectives with thermal management requirements by reducing power output when temperature thresholds are approached and activating auxiliary cooling when necessary.
3Power
If lead propulsion vehicle generates higher power output, then total vehicle system power increases, but trail propulsion vehicle receives insufficient oxygen and experiences reduced power capability
Solution Approach 1:
The patent implements coordinated parameter adjustment across multiple propulsion vehicles. The control system calculates optimal power distribution by considering ambient oxygen levels, vehicle spacing, and individual vehicle capabilities. When oxygen levels are limited, the system reduces lead vehicle power output to preserve oxygen for trail vehicles, or increases spacing between vehicles. This dynamic parameter coordination ensures total system power is maximized within the constraints of available oxygen supply.
4Power
If electric circuits operate without sufficient airflow, then power output is maintained, but components overheat and reliability decreases
Solution Approach 1:
The patent implements preliminary thermal management actions before critical overheating occurs. The control system monitors component temperatures and ambient conditions continuously, and takes preventive actions such as reducing power output, activating auxiliary cooling systems, or adjusting vehicle speed before temperature thresholds are exceeded. This preliminary intervention maintains component reliability while preserving as much power output as possible.
Data Source
AI summary
A control system includes a communication device onboard a vehicle system approaching or entering an airflow restricted area along a route and one or more processors. The communication device configured to receive status messages that contain data parameters representative of ambient conditions within the airflow restricted area. The processors are configured to monitor the ambient conditions and determine different power output upper limits that a trail propulsion vehicle of the vehicle system can generate within the airflow restricted area based on the ambient conditions and different power outputs generated by a lead propulsion vehicle of the vehicle system. The processors further configured to communicate instructions to control the lead propulsion vehicle within the airflow restricted area to generate the power output of the different power outputs that results in the greatest total available power output of the vehicle system as the vehicle system travels within the airflow restricted area.