Passenger Car Fuel Filter Element Is Resistant To Fuel Corrosion
And Has Strong Material Stability
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"
During the fuel transfer process from the tank to the engine, three
types of contaminants may enter:
Colloids and paraffin contained in the fuel itself (which tend to
solidify at low temperatures);
Metal debris and rubber particles from aging fuel tanks and fuel
lines;
Dust and moisture introduced during refueling.
Fuel filters physically filter and intercept these impurities,
directly safeguarding two key aspects:
Protecting the injectors and fuel pump: Clogged components like
these (for example, the injector pores are only tens of microns in
diameter) can lead to poor atomization, increased fuel consumption,
reduced power, and, in severe cases, component failure;
Maintaining engine stability: Preventing impurities from causing
poor fuel supply, reducing idling jitter, weak acceleration, and
cold start difficulties, thereby extending engine life.
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).
