refrigerated vehicle diesel generator which is under-mounted

Lower mounted diesel generator sets installed on refrigerated trucks are specialized power systems designed to supply electricity for refrigerated transportation. These generators are typically mounted on the underside of reefer trucks, saving valuable cargo space and providing reliable power to refrigeration equipment such as cold storage units and refrigeration systems, even while the vehicle is in motion.

Working Principle

1. Diesel Fuel Combustion: Diesel fuel is injected into the engine cylinder, where it is compressed and ignited, releasing combustion heat.
2. Power Output: Combustion energy drives the engine pistons and rotates the crankshaft.
3. Generator Conversion: The engine’s rotary power is transmitted to the generator via coupling, rotating the generator rotor to produce alternating current (AC).
4. Power Supply: The generator outputs electricity to operate refrigerated equipment and maintain the low-temperature environment for transported goods.

Features

• Compactness and Space-Saving: Installed at the vehicle’s bottom, freeing up more cargo space and featuring a compact, easily concealable design.
• High Efficiency: Delivers stable, efficient, and long-lasting power, capable of continuous operation for cold chain needs.
• Fuel Economy: Diesel generators consume less fuel for long periods, making them ideal for lengthy cold chain transportation.
• Durability and Reliability: Built to withstand vibration and shock from rough roads, with a long maintenance cycle and adaptability to diverse climates and environments.
• Low Noise and Vibration: Modern designs focus on minimizing noise and vibration, meeting strict noise requirements for urban and residential areas.
• Automatic Start-Stop Function: Some high-end models feature automatic temperature monitoring and generator start-stop to maintain optimal cargo temperatures.

Main Uses

• Cold Chain Transportation: Maintains low temperatures for perishable goods, medicines, vaccines, and other temperature-sensitive products during transit.
• Long-Distance Transportation: Offers an independent, stable power source where grid access is unavailable, ensuring uninterrupted refrigeration.
• Special Cargo Transportation: Supports temperature-controlled transport of biological samples, chemicals, precision instruments, and more.

Installation

• Bottom Mounting: Generator is fixed underneath the truck on a robust frame or bracket, often with anti-vibration design to minimize transport impacts and optimize weight distribution.
• Hanging Design: Some units are suspended at the vehicle’s rear or bottom center, using shock absorbers and springs to further reduce vibration and protect the vehicle structure.
• Cooling System: Incorporates water-cooled or air-cooled systems to dissipate heat and maintain optimal engine temperature during continuous use.
• Electrical Connections: Ensures safe, reliable, and high-temperature/anti-aging wiring between generator and refrigerated equipment, preventing failures during long journeys.

Maintenance

• Regular Inspection: Periodically check fuel, lubrication, and electrical systems to ensure stable, safe operation.
• Filter Cleaning/Replacement: Clean or replace air, oil, and diesel filters regularly to maintain optimal airflow and fuel supply.
• Cooling System Maintenance: Inspect and clean the cooling system, ensuring adequate coolant levels and preventing overheating.
• Battery & Electrical Check: Routinely check the battery and electrical system for proper function and charge.
• Exhaust System Inspection: Regularly check the exhaust for blockages or leaks to maintain safe operation.