Fuel injection nozzle for internal combustion engine

Claim 2

An injection nozzle for use with internal combustion engines which nozzle is adapted to be disposed in a radially extending position in the intake manifold, said nozzle comprising a slender cylindrical rod having a central bore extending substantially the length thereof, means defining a main jet for restricting said central bore at one end of said rod, and having a plurality of axially spaced transverse bores to eject fuel into a said intake manifold, said transverse bores including first transverse bores extending through said rod and communicating with said central bore adjacent the ends of said central bore and axially spaced smaller radial bores intermediate said first bores.

Claim 3

A nozzle according to claim 1 wherein said transverse bores are parallel and are disposed to extend in a direction normal to the axis of said rod.

Claim 4

A nozzle according to claim 1 wherein said means defining a main jet is a small bore having a diameter of between 0.018 and 0.10 inch, and wherein said central bore has a larger diameter between 0.02 and 0.12 inch, said transverse bores have diameters between 0.02 and 0.10 inch, and said rod has an outside diameter of between 0.060 and 0.20 inch.

Claim 5

A nozzle according to claim 1, including an idle jet communicating with said central bore, said idle jet having a diameter of 0.018 to 0.08 inch, said central bore having a diameter of 0.02 to 0.12 inch and said transverse bores having a diameter of 0.02 to 0.15 inch.

Claim 6

A nozzle according to claim 1 wherein said first transverse bores include a pair of bores extending diametrically of said rod adjacent each end of said central bore.

Claim 7

A nozzle according to claim 5 wherein said means defining a main jet is a bore smaller than the central bore and has a diameter of between 0.018 and 0.10 inch, said central bore has a diameter between 0.02 and 0.12 inch, said first bores adjacent the ends have diameters of between 0.04 to 0.10 inch and said intermediate radial bores have a diameTer of between 0.02 to 0.06 inch.

Claim 8

In combination, an intake manifold having an air intake passageway of uniform diameter, and a fuel injection nozzle disposed in a diametrically extending position in the intake manifold passageway, said nozzle comprising a cylindrical rod having a central bore extending substantially the length thereof, means defining a main jet for restricting said central bore at the end of said rod adapted to be connected to the fuel line, and having a plurality of axially spaced transverse bores to eject fuel into the intake manifold passageway, said transverse bores including first transverse bores extending diametrically of said rod and communicating with said central bore adjacent the ends thereof and the walls of said intake manifold defining said passageway and including axially spaced radial bores intermediate said first bores and adjacent the center of said passageway.

Claim 9

In combination, an intake manifold having an air intake passageway of uniform diameter, and a fuel injection nozzle disposed in a diametrically extending position in the intake manifold passageway, said nozzle comprising a cylindrical rod having a central bore extending substantially the length thereof, means defining a main jet for restricting said central bore at the end of said rod adapted to be connected to the fuel line, and having a plurality of axially spaced transverse bores to eject fuel into the intake manifold passageway, said transverse bores including first transverse bores extending diametrically of said rod and communicating with said central bore adjacent the ends thereof and the walls of said intake manifold defining said passageway and including axially spaced radial bores intermediate said first bores and adjacent the center of said passageway.

Claim 10

The combination of claim 7 wherein said manifold passageway has a diameter of about 1 5/8 inches and said rod has an outside diameter of 0.060 to 0.20 inch.

Claim 11

The combination of claim 8 wherein said means defining said main jet is a bore smaller than the central bore and has a diameter of between 0.018 and 0.10 inch, said central bore has a diameter between 0.02 and 0.12 inch, said first bores have diameters of between 0.04 to 0.10 inch and said intermediate bores are smaller than said first bores and have a diameter of between 0.02 to 0.06 inch.