Electric Firefighting Vehicle Fluid Conduit and Low-Speed Torque Layout
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Solution Overview
Problem
Firefighting vehicles powered by gasoline or diesel fuel pose safety risks in hot environments due to flammability, emit toxic emissions, provide low torque at low speeds, and perform poorly in smoke-filled spaces.
Innovation Solution
A firefighting vehicle with an electric drivetrain, including a chassis with a conduit for firefighting fluid, electric motors for wheel propulsion, and battery modules, providing high torque at low speeds and reducing emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If gasoline or diesel fuel is used to power firefighting vehicles, then high energy density is achieved, but flammability risks increase in hot environments
Solution Approach 1:
The patent replaces the internal combustion engine (mechanical/chemical system) with an electric motor (electrical system). This substitution eliminates the need for flammable gasoline or diesel fuel while maintaining high energy density through battery packs, directly resolving the contradiction between energy density and flammability risk in hot firefighting environments
Solution Approach 2:
The patent changes the fundamental energy storage parameter from chemical fuel (gasoline/diesel) to electrical energy (battery packs). This parameter change allows the vehicle to maintain high energy density while eliminating flammability risks, as batteries do not pose the same combustion hazards as traditional fuels in hot environments
2Power
If gasoline or diesel engines are used, then power is provided, but toxic emissions are generated in smoke-filled environments
Solution Approach 1:
The patent substitutes the internal combustion engine with an electric motor, eliminating the combustion process that generates toxic emissions. The electric motor provides the necessary power for firefighting operations without adding any harmful emissions to already smoke-filled environments, directly resolving the contradiction between power delivery and toxic emission generation
3Speed
If combustion engines are used, then propulsion is achieved, but torque at low speeds is insufficient for obstacles and heavy equipment
Solution Approach 1:
The patent replaces the combustion engine with an electric motor, which inherently provides high torque at low speeds due to the electromagnetic force generation mechanism. This substitution enables the vehicle to effectively climb obstacles and drag heavy water-charged hoses without the torque limitations of combustion engines, resolving the contradiction between propulsion capability and low-speed force delivery
4Power
If combustion engines are used, then power delivery is achieved, but performance degrades in oxygen-starved smoke-filled spaces
Solution Approach 1:
The patent substitutes the oxygen-dependent combustion engine with an electric motor that operates independently of atmospheric oxygen levels. The electric motor draws power from battery packs rather than combusting fuel with ambient oxygen, ensuring reliable power delivery in smoke-filled, oxygen-starved environments where combustion engines would fail, thus resolving the contradiction between power delivery and reliability in hazardous atmospheres
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 electric vehicle minimizes flammable fluids and toxic emissions, operates independently of air quality and oxygen levels, and offers high torque for maneuverability in challenging conditions.
Implementation Method 1
first and second battery modules within the chassis at the first and second sides of the conduit, respectively, each of the first and second battery modules coupled to at least one of the first and second electric motors for providing power thereto
Implementation Method 2
first and second electric motors within the chassis at first and second sides of the conduit, respectively. The first and second electric motors are respectively configured to drive first and second wheels for propelling the vehicle
Data Source
AI summary
A firefighting vehicle includes a chassis that houses an electric drivetrain for driving wheels of the vehicle. A conduit extends within the chassis from back to front for conveying firefighting fluid. Within the chassis, a first motor and a first battery pack are disposed on a first side of the conduit and a second motor and a second battery pack are disposed on a second side of the conduit. The first motor is configured to drive a first wheel on a first side of the vehicle, and the second motor is configured to drive a second wheel on a second side of the vehicle. The conduit is configured to provide firefighting fluid to a monitor mounted at the front of the chassis, where the fluid can be discharged toward a target, such as a fire.