High Volume Smoke Exhaust Fire Truck | Positive Negative Pressure Ventilation Vehicle

Mercedes-Benz Heavy-Duty Smoke Removal Vehicle for Tunnel, Underground & Large-Scale Fire Rescue

The High-Volume Positive/Negative Pressure Smoke Exhaust Fire Truck is a specialized emergency response vehicle designed for rapid smoke extraction, ventilation, and air circulation during major fire incidents. It is engineered to support firefighters in tunnels, underground facilities, large industrial buildings, high-rise structures, warehouses, and disaster areas where smoke accumulation severely affects visibility, evacuation, and rescue operations.

Built on the powerful Mercedes-Benz Arocs 3358 6×4 chassis, this vehicle integrates an ultra-high-capacity smoke exhaust system, independent power generation, positive and negative pressure ventilation functions, and intelligent control technology. With a maximum airflow of 800,000 m³/h, it provides efficient smoke removal and improves safety for rescue teams operating in hazardous environments.

Key Features

Ultra-High Volume Smoke Exhaust Capability

The vehicle is equipped with a high-power smoke exhaust fan system designed for large-scale fire environments.

Smoke Exhaust Performance:

  • Maximum Airflow: ≥800,000 m³/h
  • Exhaust Fan Power: ≥200 kW
  • Maximum Blow Distance: ≥80 m

The system rapidly removes smoke, toxic gases, and heat, improving visibility and supporting safer firefighting operations.


Dual Positive & Negative Pressure Ventilation System

The vehicle supports both positive and negative pressure smoke control modes to adapt to different rescue scenarios.

Positive Pressure Ventilation

  • Air Supply Distance: ≥500 m
  • With duct system

Applications:

  • Tunnel ventilation
  • Underground rescue
  • Smoke-free evacuation routes

Negative Pressure Exhaust

  • Exhaust Distance: ≥200 m

Applications:

  • Smoke extraction
  • Toxic gas removal
  • Fire scene ventilation

This dual-function design allows emergency teams to select the most effective ventilation method according to site conditions.


Independent High-Power Generator System

To ensure continuous operation, the smoke exhaust system is powered by an independent generator.

Generator Specifications:

  • Model: Engga EG315-360N
  • Output Power: ≥340 kW
  • Frequency: 50 Hz

The independent power system allows the vehicle to operate effectively in locations where external electricity supply is unavailable.


Large-Capacity Water Protection System

The vehicle includes an integrated water tank system to provide additional firefighting support and equipment protection.

Water Tank:

  • Capacity: 2,200 L
  • Material:
    • 304 Stainless Steel
    • Magnesium anode corrosion protection

This improves durability and supports extended emergency operations.


Intelligent Control & Remote Operation

The MX smoke exhaust vehicle uses an advanced electronic control architecture.

Control Features:

  • PLC automatic control
  • CAN bus communication
  • Touchscreen display
  • Remote wired control box

Operators can monitor and adjust ventilation functions efficiently during complex rescue missions.


Professional Duct Deployment System

The vehicle includes dedicated duct equipment for flexible ventilation deployment.

Included:

  • 2 × duct trailers
  • 60 m negative pressure duct
  • 40 m positive pressure duct
  • Diameter: 600 mm

The modular duct system enables rapid setup in tunnels, buildings, and confined spaces.


Key Technical Specifications

Category Specification
Vehicle Type High-Volume Smoke Exhaust Fire Truck
Chassis Mercedes-Benz Arocs 3358
Drive Type 6×4
Engine Power 425 kW
Emission Standard Euro VI
Crew Capacity 2 Personnel
Gross Vehicle Weight ≤28,500 kg
Dimensions (L×W×H) 11.84 × 2.55 × 3.88 m

Smoke Exhaust System Specifications

Item Specification
Maximum Airflow ≥800,000 m³/h
Exhaust Fan Power ≥200 kW
Positive Pressure Distance ≥500 m
Negative Pressure Distance ≥200 m
Maximum Blow Distance ≥80 m
Duct Diameter 600 mm

Generator System Specifications

Item Specification
Generator Model Engga EG315-360N
Output Power ≥340 kW
Frequency 50 Hz

Water System Specifications

Item Specification
Water Tank Capacity 2,200 L
Material 304 Stainless Steel
Protection Magnesium Anode Anti-Corrosion System

Vehicle Equipment Configuration

Cab & Safety Equipment

  • Mercedes-Benz 2-door cab
  • 200W emergency siren
  • LED warning light bar
  • Strobe lights
  • 360° camera system
  • Video recorder

Control & Power Management

  • PLC + CAN control system
  • Touchscreen operator interface
  • Remote wired control box
  • Automatic battery charger (YD-SES30A)

Application Scenarios

Tunnel Fire Rescue

Provides powerful smoke extraction and ventilation support for highway tunnels, railway tunnels, and underground transportation systems.

Underground Facility Emergency Response

Suitable for mines, underground warehouses, parking facilities, and confined-space rescue operations.

Industrial Firefighting

Supports large factories, chemical plants, warehouses, and energy facilities where smoke accumulation creates major risks.

High-Rise Building Fire Operations

Improves evacuation conditions and assists firefighters by reducing smoke density and improving visibility.

Disaster Relief Missions

Provides mobile ventilation capability after major disasters involving collapsed structures or restricted air circulation.


Advantages of High-Volume Smoke Exhaust Fire Truck

  • 800,000 m³/h ultra-high airflow capability
  • Positive and negative pressure ventilation modes
  • 500m long-distance air supply capability
  • Independent 340kW generator system
  • Mercedes-Benz Arocs heavy-duty platform
  • Intelligent PLC/CAN control
  • Rapid duct deployment system
  • Designed for extreme smoke environments

The High-Volume Positive/Negative Pressure Smoke Exhaust Fire Truck provides a professional smoke management solution for modern emergency response operations, helping firefighters improve visibility, reduce hazardous gas exposure, and enhance rescue efficiency in complex fire environments.

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