Cylinder head with integrated turbocharger
AssigneeFca US LLC
InventorsMichael P Schmidt, Douglas Trudeau, Constantin Hagiu, Brian Jacobs
Life of this patent
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Abstract
A cylinder head assembly includes a cast cylinder head and a turbocharger housing integrally cast with the cylinder head. The integrated cylinder head and turbocharger housing includes: (i) a compact low wetted area to provide an uninterrupted flow path pointed directly at a catalyst face to facilitate achieving cold start emissions targets, (ii) a casting core assembly with specific core geometry and steps for assembly to enable core assembly while meeting all cylinder head and integrated turbine housing functional requirements, (iii) an oxygen sensor disposed pre-turbine in an integrated exhaust manifold, and (iv) a fully integrated PCV make-up air system.
Claims20
A cylinder head assembly for an internal combustion engine, comprising:
- a cast cylinder head;
- and
- a turbocharger housing integrally cast with the cylinder head,
- wherein the integrally cast cylinder head and turbocharger housing comprises:
- a turbine inlet duct configured to receive exhaust gas from an integrated exhaust manifold and direct exhaust gas to a turbine disposed within the turbocharger housing;
- a wastegate inlet duct configured to receive exhaust gas from the exhaust manifold and bypass exhaust gas around the turbine;
- a fully integrated PCV make-up air system configured to supply make-up air to the cylinder head for positive crankcase ventilation;
- and
- a compressor inlet shroud coupled to the turbocharger housing, wherein the integrated PCV make-up air system is integrated into the compressor inlet shroud and the turbocharger housing.
A cylinder head assembly for an internal combustion engine, comprising:
- a cast cylinder head;
- and
- a turbocharger housing integrally cast with the cylinder head,
- wherein the integrally cast cylinder head and turbocharger housing comprises:
- a compact low wetted area to provide an uninterrupted flow path pointed directly at a catalyst face to facilitate achieving cold start emissions targets.
A cylinder head assembly for an internal combustion engine, comprising:
- a cast cylinder head;
- and
- a turbocharger housing integrally cast with the cylinder head,
- wherein the integrally cast cylinder head and turbocharger housing comprises:
- (i) a compact low wetted area to provide an uninterrupted flow path pointed directly at a catalyst face to facilitate achieving cold start emissions targets,
- (ii) a casting core assembly wherein an intake scroll core is coupled to an exhaust port core and an exhaust side core is coupled to the exhaust port core,
- (iii) an oxygen sensor disposed pre-turbine at least partially within an integrated exhaust manifold,
- (iv) a fully integrated PCV make-up air system,
- (v) a water jacket cast into the integrally cast cylinder head and turbocharger housing, wherein the water jacket is configured to cool the oxygen sensor so as to enable placement of the oxygen sensor at least partially within the integrated exhaust manifold, and
- (vi) a wastegate housing defining a wastegate passage and a valve seat with a wastegate inlet.
Dependencies are inferred from the claim text.