Refrigerated vehicles are divided into diesel-powered refrigerated vehicles and gasoline-powered refrigerated vehicles.
I. Usage Aspect
Diesel engines are cheaper than gasoline engines, but gasoline engines are generally lighter and more compact. Therefore, gasoline engines are commonly used in aircraft, water tanker trucks, motorcycles and other machinery, while diesel engines are typically employed in ships, large water tanker trucks, tractors, tanks and generators - large-scale equipment.
II. Construction Aspects
The gases in diesel engines are of a different nature. Their volume is much smaller, so the pressure is higher and the temperature is even higher. This temperature has already exceeded the ignition point of diesel.
The ignition methods are different. Gasoline engines are ignited by spark plugs, while diesel engines do not have spark plugs. Instead, fuel injectors are installed at the corresponding positions.


III. Ignition Method
It’s an internal combustion engine, right? The gasoline engine mixes the vaporized gasoline with air in the cylinder, compresses it, and then ignites it with a spark plug. The diesel engine, on the other hand, sprays the atomized diesel into the cylinder and mixes it with air. It is compressed to increase the temperature of the mixed gas and then ignited automatically. The gasoline engine uses gasoline as fuel, while the diesel engine uses diesel. The names of these engines are derived from this.
IV. Compression Ratio
Compression ratio refers to the comparison between the maximum and minimum volumes of gas present in the cylinder when the piston moves within it. The volume of gas in the cylinder is the largest when the piston is at its lowest point, and the smallest when the piston is at its highest point. The former is called the total cylinder volume, and the latter is called the cylinder combustion chamber volume. The higher the compression ratio, the higher the efficiency. However, due to the material strength limitations of the cylinder and the fact that the temperature of the working medium inside the cylinder cannot exceed the ignition point of the fuel, the compression ratio cannot be too large.