Siemens Canada Limited

Siemens Automotive Corporation

John R Mammarella

John Francis Marentette

Frank Vyskocil

Christine C Worrel

Gary I Kennedy

An intake manifold includes an upper shell, a lower shell, and a middle shell that interconnects the upper and lower shells. The lower shell has a plurality of longitudinally spaced shell ports. Each shell port is adapted for installation over a corresponding intake port for an engine cylinder head. The upper shell has a plurality of runners that are used to guide air to the shell ports. The middle shell has a plurality of channels that interconnect the runners and the shell ports such that air can flow through the runner to the cylinder intake port. Fuel injector pockets are formed within the upper, middle, and lower shells with each of the pockets having an injector opening in communication with the corresponding shell port. An internal fuel rail, formed between the upper and middle shells, supplies fuel to each of the injector pockets. A fuel injector is installed into each injector pocket such that the injectors are substantially enclosed within the manifold. An internal wire harness rail, formed between the upper and middle shells, supports a wire harness that electrically connects each of the injectors to a power supply.

Intake manifold with internal fuel rail and injectors

An intake manifold for an engine is provided that includes a housing having a passageway carrying blow-by gases from an engine crankcase. A valve body housing having a cavity is defined by a portion of the housing. The valve body housing has a vacuum side and a blow-by gas side. The blow-by gas side is in fluid communication with the passageway. A positive crankcase ventilation valve is disposed within the cavity and permits the blow-by gases to flow from the passageway through to the vacuum side when in an open position. A cap is preferably secured to the housing for sealing the positive crankcase ventilation valve within the cavity. Preferably an oil separator is also integrated into the intake manifold to separate the oil from the blow-by gases.

Positive crankcase ventilation system

An apparatus and method for incorporating a plurality of various fuel and emission components generally located on the top or outside of an internal combustion engine into a completed sub-assembly that can be delivered to an engine assembly line and installed as a unit on the engine. The air-fuel system components are assembled in a unitized or integrated air-fuel module which is then assembled to the engine. Also disclosed is a method of assembling an engine including providing an intake manifold base having at least one valve cover integrally molded in a bottom of the intake manifold base and having integral intake manifold runners; assembling an integrated air-fuel module at a first location; and then attaching the integrated air-fuel module to the engine at a second location.

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Windsor, Canada

John R Mammarella