Saturn Electronics & Engineering, Inc.

Bradley N Kippe

Barry L Thater

Emil Szlaga

A fuel pressure pulse damper includes metallic damper body defining a chamber in which a flexible diaphragm is received in a manner to dampen fuel pressure pulses between a fuel pump and fuel injectors of a vehicle fuel system. The damper body includes a barbed fitting to receive fuel form the fuel pump and quick connect fitting for connection to a fuel rail for supplying pressurized fuel to fuel injectors of the vehicle engine.

Vehicle fuel pulse damper

Fuel shut-off device for use in a diesel fuel tank to discontinue fuel flow to a fuel pump comprises a valve seat forming a fuel flow opening for fuel to flow from the fuel tank to the fuel pump, a fuel control valve cooperably disposed relative to the valve seat to control fuel flow from the fuel tank to the fuel pump, and a spring biasing the fuel inlet valve to a closed position against the valve seat. A diaphragm is provided having a first valve-actuating side for moving the fuel inlet valve relative to the valve seat against bias of the spring and a second side. The second side is communicated to a control chamber having an inlet orifice that is communicated to the fuel tank and an outlet orifice that is communicated to said fuel pump. An inlet orifice valve is disposed in the fuel tank and is actuated to open the inlet orifice to the fuel tank when the fuel level is above a predetermined low level to cause the diaphragm to move toward the fuel inlet valve to move it to an open position relative to the valve seat against bias of the spring and actuated to close the inlet orifice to the fuel tank when the fuel level is at the predetermined low level to cause the diaphragm to move away from the fuel inlet valve to allow the spring to move the fuel inlet valve to the closed position to provide insufficient fuel flow to the fuel pump to maintain engine operation, thereby preventing air from being ingested into the fuel pump.

Diesel fuel shut-off device

A motor vehicle fuel fill pipe shut-off device includes a fuel shut-off valve normally closed relative to a valve seat and disposed in a path of fuel flow through the fuel fill pipe of the motor vehicle to a fuel tank thereof. The valve is connected to a diaphragm in a manner to define in part a chamber communicated by an inlet orifice to the fuel fill pipe and by an outlet orifice to the fuel tank that is vented during fueling to a charcoal canister wherein a fluid pressure in the chamber is lower than that in the fuel fill pipe during fueling to permit opening of the valve by fuel introduced through the fuel fill pipe, A fuel float or solenoid moves a closure to close off communication of the outlet orifice to the fuel tank when fuel level in the fuel tank reaches the predetermined &ldquo;full&rdquo; level to increase chamber fluid pressure to permit movement of the valve by a biasing spring as assisted by the diaphragm toward the valve seat and achieve closing of the valve to prevent further filling of the fuel tank with fuel.

Fuel fill pipe shut-off device

A one-piece check valve is provided for a fuel filler pipe connected to a vehicle fuel tank to provide a fuel filling passage communicated to the fuel tank. The check valve comprises a thin sheet of material shaped to comprise a mounting portion, a flapper valve and an intermediate connecting portion that connects the flapper valve and the mounting portion with the connecting portion being contoured so as to normally impart a spring bias to the flapper valve to close off the fuel filling passage. An elastomeric seal is fastened on the flapper valve or on the fill pipe in a manner to provide a liquid fuel and vapor tight seal when the flapper valve is in a closed position relative to the fuel filling passage. The flapper valve is opened when fuel is introduced into the fuel filler pipe to permit fueling of said tank.

Growing community of inventors

Holly, MI, United States of America

Bradley N Kippe