Fuel Pump for Engine is a critical device utilized in internal combustion engines to inject fuel into the engine cylinders at high pressure. This device serves both gasoline and diesel engines. Specifically, a high pressure fuel pump, also referred to as a high-pressure oil pump, constitutes one of the essential components of diesel engines. Its primary function is to elevate the low-pressure fuel to a high pressure (typically exceeding 1000 bar) and subsequently deliver this high-pressure fuel to the injectors in a precisely timed and quantified manner.