Cylinder head cooling system
AssigneeFord Global Technologies, LLC
InventorsTed Beyer, Jody Michael Slike, John Christopher Riegger
Life of this patent
Estimating the term…
Abstract
A cylinder head with an integrated exhaust manifold is provided, the integrated exhaust manifold including an exhaust manifold flange. In one example, the cylinder head includes a cooled flange to control exhaust system heat. The cylinder head can improve operation of an integrated cylinder head during at least some operating conditions.
Claims19
A cylinder head with an integrated exhaust manifold, the integrated exhaust manifold including an exhaust manifold flange, the cylinder head comprising:
- a coolant inlet in communication with a cylinder head cooling system higher pressure passage;
- a coolant outlet in communication with a cylinder head cooling system lower pressure passage;
- an exhaust flange coolant passage at least partially traversing the exhaust manifold flange and in communication with the coolant inlet and the coolant outlet;
- and
- a sealing gasket interposed by the exhaust manifold flange and a second flange included in a downstream component, wherein the sealing gasket includes an inner seal and an outer seal coupled to the exhaust manifold flange and the second flange and defining a boundary of the exhaust flange coolant passage.
A method for operation of a cylinder head cooling system in a cylinder head of an engine, the cylinder head including an integrated exhaust manifold, the method comprising:
- flowing coolant into an exhaust flange coolant passage from a higher pressure region of the cylinder head cooling system, the exhaust flange coolant passage interposed between an exhaust manifold flange of an exhaust outlet of an exhaust manifold integrated into the cylinder head and a second flange included in a component downstream of the integrated exhaust manifold;
- and
- flowing coolant from the exhaust flange coolant passage into a lower pressure region of the cylinder head cooling system, wherein the cylinder head includes a sealing gasket interposed by the exhaust manifold flange and the second flange, the sealing gasket including an inner seal and an outer seal coupled to the first flange and the second flange and defining a boundary of the exhaust flange coolant passage.
A cylinder head with an integrated exhaust manifold, the integrated exhaust manifold including an exhaust manifold flange, the cylinder head comprising:
- a coolant inlet in communication with a higher pressure passage in a cylinder head cooling system, the cylinder head cooling system configured to flow coolant through one or more coolant passages;
- a coolant outlet in communication with a cylinder head cooling system lower pressure passage;
- and
- an exhaust flange coolant passage at least partially traversing the exhaust manifold flange and in communication with the coolant inlet and the coolant outlet, the exhaust flange cooling passage interposed between the exhaust manifold flange and a flange of a downstream component, wherein the integrated exhaust manifold includes a plurality of exhaust runners, each of the exhaust runners having a valve guide entry point and a confluence area, where at least one of the plurality of exhaust runners has a cross-sectional area which contracts between the valve guide entry point and the confluence area and at least one of the plurality of exhaust runners has a cross-sectional area which expands in a curved portion of the exhaust runner and which contracts at a straight portion of the exhaust runner.
A system, comprising:
- a cylinder head with an integrated exhaust manifold including a higher pressure passage inlet, a lower pressure passage outlet, and an exhaust manifold flange;
- a turbocharger flange mated with the exhaust manifold flange;
- and
- a coolant passage traversing around an entirety of an exhaust passage at the exhaust manifold flange, communicating with the coolant inlet and outlet, and interposed between the exhaust manifold flange and the turbocharger flange.
Dependencies are inferred from the claim text.