1. Time? Dachai 498. It can also be empty at 7.5 oil, and Chaochai 4111 empty at about 8 oil.

2. Jianghuai? 4D91 is Japanese technology, which is very fuel-efficient, about 7 oil Jiangling, Japanese technology, low configuration, no gas.

3. Liberation? The car is too small, so the configuration is low, pull less and run fast.

4. Isuzu is small and expensive, with no cost performance.

the 491 is the model of the engine. 4 in 491 means 4 cylinders, and 91 means that the cylinder diameter is 91 mm..

Extended information:

A diesel engine is an engine that burns diesel to release energy. It was invented by the German inventor Rudolf Diesel in 1892. In order to commemorate this inventor, Diesel is represented by his surname diesel.

and Diesel engine is also called diesel engine.

the advantages of diesel engine are large torque and good economic performance. The working process of diesel engine has many similarities with that of gasoline engine, and each working cycle also goes through four strokes: intake, compression, work and exhaust.

However, because the fuel used in diesel engine is diesel, its viscosity is higher than that of gasoline, and it is not easy to evaporate, but its auto-ignition temperature is lower than that of gasoline.

therefore, the formation and ignition mode of combustible mixture are different from those of gasoline engines. The main difference is that the mixture in the cylinder of diesel engine is compression-ignited rather than ignited.

When the diesel engine is working, air enters the cylinder. When the air in the cylinder is compressed to the end, the temperature can reach 511-711℃ and the pressure can reach 41-51 atmospheres.

when the piston approaches the top dead center, the fuel nozzle of the fuel supply system injects fuel into the cylinder combustion chamber at extremely high pressure in a very short time, and the diesel oil forms fine oil particles.

when it is mixed with high-pressure and high-temperature air, the combustible mixture will burn by itself, and expand violently to produce explosive force, which will push the piston downward to do work.

At this time, the temperature can reach 1,911-2,111℃ and the pressure can reach 61-111 atmospheres, and the generated torque is very large, so diesel engines are widely used in large-scale diesel equipment.

Reference:

Baidu Encyclopedia of Diesel Engine