Commercial Vehicle Fire Protection Off-road Vehicle Fire
Suppression System
Vehicle fire suppression can be incorporated as a stand-alone
system, a manual/automatic fire protection system or as a simple
hand-held extinguisher. Although commercial vehicle fire
suppression is not as commonly installed as for the vehicles that
do hard mechanical work, it could nonetheless be regarded as a
necessity. In the case of an accident, motor vehicles can easily be
caught up in flames and trap a burning victim inside. For the
vehicles that don’t have an automatic or stand alone system
installed, a hand-held fire extinguisher should be equipped and
easily accessible by hand.
Statistics show that off-road vehicles burn with alarming
frequency. These vehicles are susceptible to fire several reasons.
They often operate steady for several hours at a time. They yse
flammable liquids -lubricating oil, gasoline, diesel oil, greases
and hydraulic fluids- in their normal operation. They also generate
heat-from engine blocks, manifolds, turbochargers and brake
systems-which can ignite these flammable liquids and debris.
Structure and Working principles of Fire Suppression System
External view of FireLess 2.0 Aerosal Automatic Fire Extinguishing
Device (as shown in Fig.1)
As shown in Fig.1, the fire extinguishing device consists of a
cylindrical fire extinguishing device main body, an electric
trigger, a mounting bracket, and a heat-sensitive wire. The left
end is a multi-nozzle grid and mesh nozzle, which is sealed by
label and will be the guide for the injection of fire extinguishing
agent when the fire extinguishing device is started. The right end
is electric trigger, which is a threaded hole and covered with a
cap during transportation, and the electric trigger is fixed and
sealed in the threaded hole during installation. The middle part is
the fixed bracket. The heat-sensitive wire is used for automatic
temperature-sensing and start device, and it should be installed
according to the position shown in the figure before usage.
The device is fixed on the ceiling or wall of the protective space
with fixed parts in working condition.
Technical Parameters of Vehicle Fire Suppression System
| Item | Parameters |
| Product model | FireLess 2.0 |
| Dimensions (without accessories, mm) | 79 in diameter×150 in height |
| Weight of fire extinguishing device (Kg) | 1.46 |
| Agent quantity (Kg) | 0.16 |
| Fire extinguishing performance ( g/m3) | 80 |
| Protected volume (m3) | 2 |
| Start temperature (℃) | ≥170 |
| Start current(mA,DC) | ≥700 |
| Safe current (mA,DC) | ≤150 |
| Electric start time (ms) | ≤3 |
| Discharge time (s) | ≤6 |
| Working temperature (℃) | -50~+95 |
| Service life (year) | 10 |
| Thermal clearance of aerosol (m) | When at 400℃≤0.24 When at 200℃≤0.52 When at 75℃≤1.04 |
| Compatibility | Can be used with fire alarm system |
Working principles of device.
FireLess 2.0 Aerosol Automatic Fire Extinguishing Device has two
start methods: temperature start of heat-sensitive wire and start
of electric trigger. The start of electric trigger can form
automatic temperature sensing, manual start and alarm linkage
through other temperature-sensing start elements, manual buttons,
and alarm mainframe.
When fire is happening, the fire extinguishing device is started
through electric trigger or heat-sensitive wire.
The fire extinguishing device sprays gray-blue smoke-like aerosols
into protection area, which is evenly spread in the protective
space, to suppress the redox reaction in the combustion process. In
addition, this device can absorb heat through decomposition
reaction and quickly reduce the temperature in fire zone.
Meanwhile, since the extinguishing particles in the gray-blue
smoke-like mixture have a large specific surface area, the flame is
quickly extinguished by continuous and repeated physical and
chemical actions.
Schematic diagram of device components
