A cylinder head is disclosed herein to allow for temperature control of exhaust gases exiting from an associated exhaust manifold. The cylinder head includes a combustion section that defines a plurality of combustion chambers and an exhaust manifold coupled to the combustion section. The combustion section fluidly couples to exhaust inlets defined by the exhaust manifold. The exhaust manifold includes at least one exhaust passageway in fluid communication with the exhaust inlets and in fluid communication with an exhaust outlet to receive combustion gases from the combustion section and output the same via the exhaust outlet. The exhaust manifold further includes at least one coolant passageway that at least partially surrounds the at least one exhaust passageway to pass coolant therethrough in order to draw and reject heat from exhaust gases.

A cylinder head is disclosed herein to allow for temperature control of exhaust gases exiting from an associated exhaust manifold. The cylinder head includes a combustion section that defines a plurality of combustion chambers and an exhaust manifold coupled to the combustion section. The combustion section fluidly couples to exhaust inlets defined by the exhaust manifold. The exhaust manifold includes at least one exhaust passageway in fluid communication with the exhaust inlets and in fluid communication with an exhaust outlet to receive combustion gases from the combustion section and output the same via the exhaust outlet. The exhaust manifold further includes at least one coolant passageway that at least partially surrounds the at least one exhaust passageway to pass coolant therethrough in order to draw and reject heat from exhaust gases.

A cylinder head configured for dividing coolant introduced thereinto to a combustion chamber side and an exhaust manifold side to increase the amount of coolant introduced to the combustion chamber side, improving cooling performance, may include a head water jacket having a combustion chamber coolant inlet, through which coolant is introduced from a cylinder block to a combustion chamber side, and an exhaust coolant inlet, through which the coolant is introduced from the cylinder block to an exhaust manifold side, the combustion chamber coolant inlet and the exhaust coolant inlet being separated from each other such that the coolant introduced through the combustion chamber coolant inlet flows to the combustion chamber side in an expanded state.

A cylinder head configured for dividing coolant introduced thereinto to a combustion chamber side and an exhaust manifold side to increase the amount of coolant introduced to the combustion chamber side, improving cooling performance, may include a head water jacket having a combustion chamber coolant inlet, through which coolant is introduced from a cylinder block to a combustion chamber side, and an exhaust coolant inlet, through which the coolant is introduced from the cylinder block to an exhaust manifold side, the combustion chamber coolant inlet and the exhaust coolant inlet being separated from each other such that the coolant introduced through the combustion chamber coolant inlet flows to the combustion chamber side in an expanded state.

A cylinder head for an internal combustion engine includes a first wall, a second wall, and a post. The first wall defines an exhaust channel that is configured to direct exhaust gas away from the engine. The second wall forms an exterior of the cylinder head and defines a water jacket between the first wall and the second wall. The water jacket is configured to channel coolant through the cylinder head. The post is disposed within the water jacket. The post extends between and is secured to each of the first and second walls. The post tapers from the first wall to a center portion of the post. The post also tapers from the from the second wall to the center portion of the post. The post is configured to fracture in response to a thermal load generated by the engine.

A cylinder head for an internal combustion engine includes a first wall, a second wall, and a post. The first wall defines an exhaust channel that is configured to direct exhaust gas away from the engine. The second wall forms an exterior of the cylinder head and defines a water jacket between the first wall and the second wall. The water jacket is configured to channel coolant through the cylinder head. The post is disposed within the water jacket. The post extends between and is secured to each of the first and second walls. The post tapers from the first wall to a center portion of the post. The post also tapers from the from the second wall to the center portion of the post. The post is configured to fracture in response to a thermal load generated by the engine.

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.

An engine block assembly utilized within a liquid-cooled engine includes an anti-cavitation engine block having a first cylinder, a second cylinder, and an inter-cylinder wall section located between the first and second cylinders. An anti-cavitation passage is formed through the inter-cylinder wall section that extends between the first cylinder and the second cylinder. A cylinder liner is inserted into the first cylinder and has an outer circumferential surface toward which the anti-cavitation passage opens. A water jacket extends at least partially around the outer circumferential surface of the cylinder liner. The anti-cavitation passage is formed through the inter-cylinder wall section at a location adjacent a region of thrust displacement of the cylinder liner and enables a flow of liquid coolant in the water jacket therethrough to deter cavitation within the water jacket adjacent the region of thrust displacement of the cylinder liner during operation of the liquid-cooled engine.

An engine block assembly utilized within a liquid-cooled engine includes an anti-cavitation engine block having a first cylinder, a second cylinder, and an inter-cylinder wall section located between the first and second cylinders. An anti-cavitation passage is formed through the inter-cylinder wall section that extends between the first cylinder and the second cylinder. A cylinder liner is inserted into the first cylinder and has an outer circumferential surface toward which the anti-cavitation passage opens. A water jacket extends at least partially around the outer circumferential surface of the cylinder liner. The anti-cavitation passage is formed through the inter-cylinder wall section at a location adjacent a region of thrust displacement of the cylinder liner and enables a flow of liquid coolant in the water jacket therethrough to deter cavitation within the water jacket adjacent the region of thrust displacement of the cylinder liner during operation of the liquid-cooled engine.

A cylinder head casting in a cylinder head assembly includes a coolant cavity upper surface and a coolant cavity lower surface forming a coolant cavity. The coolant cavity lower surface is contoured to form an igniter-support prominence and cast-in coolant channels through the igniter-support prominence to feed a flow of coolant through a cooling moat extending circumferentially around an igniter post supporting an igniter sleeve. The igniter sleeve abuts the cylinder head, radially outward of the igniter post, at a first contact location and a second contact location in an alternating arrangement with a first coolant feed opening and a second coolant feed opening. Related methodology relating to making a cylinder head is also disclosed.