Priming oil意思

"Priming oil" is a term used in the context of engines, particularly diesel engines, and refers to a special type of oil that is used to lubricate the fuel injection system. The purpose of priming oil is to ensure that the fuel injection system is properly lubricated before the engine is started, which helps to prevent damage to the fuel injectors and other components of the injection system.

In diesel engines, the fuel injection system is a critical component that is responsible for delivering fuel to the engine's cylinders at the correct time and in the correct amount. The system typically includes a fuel pump, fuel lines, and fuel injectors, all of which require lubrication to function properly.

Priming oil is typically a light oil that is designed to be easily pumped through the fuel injection system. It is used to lubricate the moving parts of the fuel injectors and other components, and to help prevent corrosion and wear. Before the engine is started, the priming oil is pumped through the fuel injection system to ensure that all parts are properly lubricated.

Once the engine has been started and the fuel system has been pressurized, the priming oil is flushed out of the system and replaced with diesel fuel. The process of flushing out the priming oil and starting the engine is known as "priming" the engine, and it is an important step in preparing a diesel engine for operation.