High Filtration Precision Passenger Car Fuel Filter Elements Can Be
Customized For All Models
Passenger car fuel filters are core components that ensure clean,
stable operation of the engine's fuel system. Their core function
is to filter impurities, moisture, and colloids from fuel
(gasoline/diesel), preventing these contaminants from entering
precision components like injectors and fuel pumps, potentially
causing wear, blockage, or performance degradation. The following
details the characteristics of passenger car fuel filters from four
perspectives: core function, core features, main types, and key
performance indicators.
Core Function: Protecting the Fuel System's "Lifeline"
High filtration precision to meet engine requirements
Filtration precision is typically between 5 and 30 microns (μm).
(Gasoline filters have a higher precision, typically 5 to 15 μm.
Diesel filters, due to their higher concentration of fuel
impurities, may require a dual filtration system of "coarse and
fine" filtration.)
Filtration precision must match engine technology: Direct injection
engines (such as direct injection) require even higher fuel
cleanliness, requiring filter precision below 10 μm to prevent
clogging of high-pressure injectors.
Features
Fuel corrosion resistance, strong material stability
Casing: Typically made of engineering plastic (such as PA66) or
metal (galvanized steel), it must withstand chemical corrosion from
gasoline/diesel and withstand the normal pressure of the fuel
system (typically 0.2-0.5 MPa) to prevent rupture and leakage.
Filter element and filter paper: The core filter material is a
resin-impregnated composite filter paper (such as wood pulp fiber
or synthetic fiber). It must have sufficient porosity to ensure
fuel flow, trap impurities through its fiber structure, and
withstand fuel immersion (no swelling or deformation).
