The combustion chamber of Shangchai diesel generator uses a new type of necked combustion chamber. This new type of shrinking combustion chamber has a great advantage in that it can greatly improve the combustion process and make it reach environmental protection indicators. This is actually one of the reasons why Shangchai diesel generators are so popular, because this equipment is environmentally friendly at work, and the pollutants emitted by it are less and more important than other equipment. It does not produce a lot of noise when working, and can create a better operating atmosphere for the operator.