Fuel rail pulse damper
AssigneeMillennium Industries Corp.
InventorMichael J. Zdroik
Life of this patent
Estimating the term…
Abstract
A fuel rail is provided for delivering fuel to a plurality of fuel injectors for a reciprocating piston internal combustion engine. The fuel rail includes a sealed housing having an inlet for receiving fuel, the housing having at least first and second injector outlets for delivering fuel to fuel injectors. The fuel rail also includes first and second filling chambers formed within said housing fluidly connected with respective first and second injector outlets. A reserve pump chamber is provided which is fluidly connected with each said filling chamber, the reserve pump chamber has a volume approximately at least equal to or greater than a volume of one of the filling chambers. The reserve pump chamber dampens pressure pulsations generated in one of the filling chambers from progression to another filling chamber.
Claims21
A fuel rail for delivering fuel to a plurality of fuel injectors for a reciprocating piston internal combustion engine, comprising:
- a sealed housing having an inlet for receiving fuel;
- said housing having at least first and second injector outlets for delivering fuel to fuel injectors;
- first and second filling chambers formed within said housing fluidly connected with respective said first and second injector outlets;
- and
- a reserve pump chamber fluidly connected with each of said filling chambers, said reserve pump chamber having a volume approximately at least equal to or greater than a volume of one of said filling chambers, said reserve pump chamber dampening pressure pulsations generated in one of said filling chambers from progression to another of said filling chambers.
A non-recirculation type fuel rail for a plurality of fuel injectors, comprising:
- a sealed housing having a fuel inlet and at least two injector outlets;
- at least first and second filling chambers fluidly connected with respective one of said injector outlets;
- and
- a reserve pump chamber being convergent/divergent fluidly connected with each one of said filling chambers.
A fuel rail for delivering fuel to a plurality of fuel injectors for a spark-ignited, reciprocating piston internal combustion engine comprising:
- a sealed housing having an inlet for receiving fuel and a plurality of injector outlets for delivering fuel to fuel injectors;
- filling chambers formed within said housing fluidly connected with said injector outlets;
- a reserve pump chamber fluidly connected with each of said filling chambers via a convergent/divergent orifice opening formed by said housing, said reserve pump chamber having a volume approximately at least twice a volume of one of said filling chambers;
- and
- a supply chamber fluidly connected with said reserve pump chamber and being bifurcated therefrom and said supply chamber being fluidly connected with said housing inlet.
A method for delivering fuel to a plurality of fuel injectors for a reciprocating piston internal combustion engine comprising:
- receiving said fuel into an inlet provided in a sealed housing;
- delivering said fuel via injector outlets provided in said housing;
- fluidly connecting with said injector outlets separated filling chambers;
- fluidly connecting with each one of said filling chambers via a convergent/divergent orifice a reserve pump chamber having a volume approximately at least the volume of one of said filling chambers;
- and dampening pressure pulsations generated in one of said filling chambers by the opening and/or closing of a fuel injector in one of said filling chambers from progression to another said filling chamber.
Dependencies are inferred from the claim text.