The truck referred to herein refers to an integrated truck whose cooling compartment is fixed to the chassis. It can also be a multi-purpose van with the rear of the compartment separated from the cab and subjected to a heat treatment to maintain the temperature of the cargo. Trucks need to behave normally within the infrastructure in which they operate, and the length of the truck is therefore limited. The total length and turning radius determine the truck's capacity at the loading point. Trucks generally include distribution vans that are small to the city and suburbs, and 9-meter-long heavy trucks that are capable of multi-point transportation.
Truck refrigeration systems fall into two broad categories: stand-alone (self-driven) and non-independent (vehicle-driven). The stand-alone self-contained engine, usually a diesel engine, is used to independently drive the refrigeration system without the need to use the engine power of the vehicle. The engine of the truck is driven non-independently to drive the compressor of the refrigeration unit or to drive the compressor of the refrigeration unit through the generator.
Some systems with generators can cool larger compartments, while non-standalone systems are more commonly used on small trucks. Most non-independent systems have a small compressor mounted on the engine of the vehicle to create a cooling effect through clutch clutching. When the vehicle is driving at high speed, the system achieves full cooling capacity; in the idle state, the cooling capacity is weakened. There is no dedicated engine in the non-independent system, which is superior in terms of lower purchase price and maintenance cost. The disadvantage of this system is its limited cooling capacity, especially in the case of traffic jams and idling. The non-independent generator system is relatively complicated. The engine of the truck drives the generator to power the refrigeration system. Generally, the inverter is used to compensate for the lack of power in the case of traffic jam or idle speed, but the purchase price and maintenance cost are greatly increased. Higher than ordinary non-independent systems.
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