Charge-forming fuel system for an internal combustion engine
OwnerJames M. Jonesinventor
Life of this patent
Estimating the term…
Abstract
A single pivoting diaphragm plate is utilized to separate the two air-sensing chambers and the two fuel-sensing chambers. The diaphragm plate is bonded to a resilient diaphragm/seal which separates and seals the four chambers and allows for the pivoting action of the diaphragm plate as it seeks to balance the forces of the air velocity and the fuel velocity. Any imbalance between the forces is sensed across the diaphragm plate, which immediately results in a pivoting movement to return the system to a balanced condition. The pivoting action of the diaphragm plate controls the fuel discharge valve which feeds fuel into an accelerated air passageway which enters the main air stream below a throttle plate.
Claims11
A charge forming fuel system comprising:
- a body including a passage, a first chamber, and a second chamber, the passage having a venturi with a throat;
- a diaphragm separating the first chamber of said body into a venturi depression chamber and a free air chamber, and separating the second chamber of said body into a primary fuel chamber and a secondary fuel chamber, said diaphragm being pivotally mounted to said body such that rotation of said diaphragm in a first direction rotates said diaphragm towards the free air chamber and towards the secondary fuel chamber, and such that rotation of said diaphragm in a second direction rotates said diaphragm towards the venturi depression chamber and towards the primary fuel chamber, wherein the free air chamber is in fluid communication with substantially ambient air, wherein the venturi depression chamber is in fluid communication with the throat of the venturi, wherein the primary fuel chamber receives the fuel flow of said charge forming fuel system and is in fluid communication with the secondary fuel chamber, and wherein the secondary fuel chamber is in fluid communication with the passage in the body;
- means for restricting the fuel flow between the primary fuel chamber and the secondary fuel chamber;
- means for controlling the fuel flow rate from the secondary fuel chamber to the passage responsive to the angular position of said diaphragm, wherein rotation of said diaphragm towards the primary fuel chamber and the venturi depression chamber increases the fuel flow rate and rotation of said diaphragm towards the secondary fuel chamber and the free air chamber decreases the fuel flow rate.
Dependencies are inferred from the claim text.