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A mounting arrangement and method for installing fuel injectors into a molded composite intake manifold having an integral fuel rail provides an aligned injector pocket bore in the fuel rail portion and an injector seat bore in an intake manifold runner. The seating bore is oversized to allow the in

A mounting arrangement and method for installing fuel injectors into a molded composite intake manifold having an integral fuel rail provides an aligned injector pocket bore in the fuel rail portion and an injector seat bore in an intake manifold runner. The seating bore is oversized to allow the injector to be angled to enable the tip to be advanced into the seat bore, allowing the injector one end to be thereafter swung into alignment with the pocket bore and inserted therein. A seal has an integral tubular portion configured to be fit over the injector tip and within the injector seat bore to be located therein. When the manifold is assembled onto the cylinder head, the seal is squeezed to grip the injector tip and sealed within the injector seat bore.

대표청구항 ▼

A mounting arrangement for fuel injectors for internal combustion engines of the type having an intake manifold having a runner for each fuel injector and an integrally formed fuel rail, said mounting arrangement comprising: a bore extending into an internal flow passage of said fuel rail portion of

A mounting arrangement for fuel injectors for internal combustion engines of the type having an intake manifold having a runner for each fuel injector and an integrally formed fuel rail, said mounting arrangement comprising: a bore extending into an internal flow passage of said fuel rail portion of said intake manifold providing a Docket for receiving an upper end of said injector: an aligned injector seat bore formed into an intake manifold runner axially spaced apart therefrom a distance less than a lengthwise dimension of said fuel injector, a diameter of said bore substantially oversized with respect to a diameter of the tip of said fuel injector: an upper end of said fuel injector inserted into said pocket bore of said fuel rail portion, and carrying a seal compressed within said pocket bore to seal said fuel injector end within said pocket bore; a tubular seal inserted in said injector seat bore and receiving said tip of said fuel injector, said seal sealed to both said fuel injector tip and said injector seat bore; said runner is formed with an opening adapted to be installed over an intake port in said engine cylinder head; and a seal having a ring portion encircling said opening and interposed between a flange on said runner and a mounting surface of said cylinder head, said seal ring portion integrally formed with said tubular injector seal in said injector seat bore.