Patent Number: 6,293,259

Title: Automotive fuel system having a pressure regulator without a movable diaphragm

Abstract: The fuel system includes a fuel tank for supplying fuel to a fuel rail having fuel injectors and a fuel pressure regulator for regulating the pressure of the fuel supplied to the fuel rail to a predetermined pressure. The pressure regulator includes a spring-biased ball movable toward and away from a valve seat with an intervening flow channel director. The flow channel director is sized to provide a substantially constant regulated pressure over a flow range typical for automotive engine use, i.e., a pressure of 350-430 kPa over a flow range of 20-50 kg/hr. The pressure regulator provides the predetermined regulated pressure without a movable diaphragm dividing the regulator into flow and non-flow chambers on opposite sides of the diaphragm.

Inventors: Kilgore; Jason T. (Newport News, VA), Bennett; Jan L. (Williamsburg, VA), Robinson; Barry S. (Williamsburg, VA)

Assignee: Siemens Automotive Corporation

International Classification: F02M 69/46 (20060101); F02M 69/54 (20060101); F02M 037/04 ()

Expiration Date: 09/25/2018