초록 ▼

A fuel pressure regulator and fuel filter module constructed to be connected to a vehicle fuel tank has a body with an integral, radially extending flange constructed to overlie and to be attached to the fuel tank and an integral depending skirt constructed to contain a fuel filter and to define in

A fuel pressure regulator and fuel filter module constructed to be connected to a vehicle fuel tank has a body with an integral, radially extending flange constructed to overlie and to be attached to the fuel tank and an integral depending skirt constructed to contain a fuel filter and to define in part an integral fluid passage communicating a fuel pump through the filter with a fuel line attached at one end to the module and through which fuel is delivered to an operating engine. Fuel discharged from the fuel pump flows through the fuel filter before entering the fuel line for delivery to the engine. An inlet of the fuel pressure regulator communicates with the fuel downstream of the fuel filter to bypass excess fuel delivered from the fuel pump through a bypass outlet of the regulator and into the fuel tank. Forming the module with the skirt, fluid passage and mounting flange in an integral, one-piece body of a plastic material substantially eliminates the escape of fuel vapors from the module because there are no seals or connections between separate bodies, as in previous modules, through which fuel vapors may permeate and escape to the atmosphere. Further, the one-piece module is stronger and is more durable during a vehicle crash than are multiple-piece modules which reduces the likelihood that fuel will leak from the fuel tank adjacent the module or through the module during or after such a crash.

대표청구항 ▼

[ What is claimed is:] [1.] A fuel pressure regulator and fuel filter module for filtering and controlling the pressure of fuel delivered from a fuel pump within a fuel tank to an engine comprising:a one-piece body having a radially extending flange constructed to be sealed to the fuel tank;a depend

[ What is claimed is:] [1.] A fuel pressure regulator and fuel filter module for filtering and controlling the pressure of fuel delivered from a fuel pump within a fuel tank to an engine comprising:a one-piece body having a radially extending flange constructed to be sealed to the fuel tank;a depending annular skirt integral with the body at one end and open at its other end;an annular fuel filter received in the skirt and having a generally cylindrical wall defining an open interior of the filter;a fuel supply passage formed in the body and having an inlet in communication with the fuel pump and an outlet in communication with the fuel filter, a fuel outlet passage formed in the body and having an inlet communicating with the fuel filter and an outlet adapted to communicate with the interior of the filter and with a fuel line through which fuel is delivered to the engine, the fuel filter being disposed between the supply passage and the outlet passage;a fuel pressure regulator having an inlet in communication with the fuel outlet passage and a bypass outlet which fuel delivered from the fuel pump in excess of the engine's fuel demand is returned to the fuel tank whereby fuel is supplied under pressure from the fuel pump to the fuel supply passage whereupon the fuel flows through the fuel filter and is communicated with the fuel outlet passage and with the inlet of the fuel pressure regulator which discharges excess fuel into the fuel tank through the bypass outlet corresponding to the engine's fuel demand and the one-piece body substantially prevents the escape of fuel vapors to the atmosphere through the module.