A cylinder head housing for a combustion unit, which forms at least two cylinders arranged in-line, having receiving openings for one outlet valve each, which are assigned to the individual cylinders of the combustion unit, comprising exhaust gas channels, which extend from these outlet valve receiving openings and are merged into an exhaust gas outlet channel, and cooling channels having a roof distribution channel which is connected to an injector cooling channel provided for an arrangement above a cylinder and/or having a manifold distribution channel, which extends along the row of outlet valve receiving openings, the manifold distribution channel being connected to a plurality of manifold network channels running along the exhaust gas channels, which are directly or indirectly connected to a manifold collection channel, which extends along the row of outlet valve receiving openings.

A cylinder head housing for a combustion unit, which forms at least two cylinders arranged in-line, having receiving openings for one outlet valve each, which are assigned to the individual cylinders of the combustion unit, comprising exhaust gas channels, which extend from these outlet valve receiving openings and are merged into an exhaust gas outlet channel, and cooling channels having a roof distribution channel which is connected to an injector cooling channel provided for an arrangement above a cylinder and/or having a manifold distribution channel, which extends along the row of outlet valve receiving openings, the manifold distribution channel being connected to a plurality of manifold network channels running along the exhaust gas channels, which are directly or indirectly connected to a manifold collection channel, which extends along the row of outlet valve receiving openings.

A cylinder head includes: a plurality of exhaust ports configured to lead out exhaust gas from combustion chambers; a plurality of intake ports configured to introduce fresh air into the combustion chambers; an intake air aggregate part configured to aggregate the plurality of intake ports; and a second EGR pipe in which EGR gas flows, wherein exhaust outlets of the plurality of exhaust ports and an EGR gas inlet of the second EGR pipe are arranged side-by-side on a flat left side surface, and a fresh air inlet of the intake air aggregate part and an EGR gas outlet of the second EGR pipe are arranged side-by-side on a flat right side surface.

An internal combustion engine having an engine block and one or more cylinder heads. The engine block houses a plurality of cylinder liners and includes a cylinder liner coolant jacket below an upper planar surface of the engine block and in fluid communication with the plurality of cylinder liners. The one or more cylinder heads are attached to the upper planar surface of the engine block and each of the one or more cylinder heads including one or more cylinder head coolant jackets and one or more downward coolant passages extending from the one or more cylinder head coolant jackets to the cylinder liner coolant jacket for delivering coolant from the one or more cylinder head coolant jackets to the cylinder liner coolant jacket.

An internal combustion engine having an engine block and one or more cylinder heads. The engine block houses a plurality of cylinder liners and includes a cylinder liner coolant jacket below an upper planar surface of the engine block and in fluid communication with the plurality of cylinder liners. The one or more cylinder heads are attached to the upper planar surface of the engine block and each of the one or more cylinder heads including one or more cylinder head coolant jackets and one or more downward coolant passages extending from the one or more cylinder head coolant jackets to the cylinder liner coolant jacket for delivering coolant from the one or more cylinder head coolant jackets to the cylinder liner coolant jacket.

An internal combustion engine includes a cylinder head and a cylinder block. The cylinder head includes a first boss cylinder head conduit portion and a first boss cylinder head cavity portion. The first boss cylinder head conduit portion is configured to receive a first fastener without threadably engaging the first fastener. The first boss cylinder head conduit portion has a first diameter. The first boss cylinder head cavity portion is aligned with the first boss cylinder head conduit portion. The first boss cylinder head cavity portion is configured to receive the first fastener without threadably engaging the first fastener. The first boss cylinder head cavity portion has a second diameter greater than the first diameter. The cylinder block is coupled to the cylinder head. The cylinder block includes a first boss cylinder block threaded portion.

A cylinder head arrangement for an internal combustion engine is provided. The cylinder head includes an integrated exhaust manifold having first and second exhaust passages to collect exhaust gas from respective cylinders to direct the exhaust gas to respective outlets of the cylinder head. The cylinder head includes a flange where the first and second outlets exit the cylinder head for connection with a turbocharger.

A modular cylinder head is configured for use with combustion engine block configurations each having different valvetrain oiling pathways. Thus, when used with “LA-style” engine blocks, oil receiving/delivery ports provided by the cylinder head are compatibly interfaced with an oil outlet port provided by the engine block, thus allowing oil to pass from the engine block into the head for delivery to a valvetrain carried thereby. Alternatively, when the head is used with “Magnum-style” engine blocks, the oil receiving/delivery ports of the head are not used. Rather, a pushrod and lifter having internal ports are used by the cylinder head to allow oil to pass from the engine block, through the internal ports of the lifter and pushrod, and into the valvetrain.

A modular cylinder head is configured for use with combustion engine block configurations each having different valvetrain oiling pathways. Thus, when used with “LA-style” engine blocks, oil receiving/delivery ports provided by the cylinder head are compatibly interfaced with an oil outlet port provided by the engine block, thus allowing oil to pass from the engine block into the head for delivery to a valvetrain carried thereby. Alternatively, when the head is used with “Magnum-style” engine blocks, the oil receiving/delivery ports of the head are not used. Rather, a pushrod and lifter having internal ports are used by the cylinder head to allow oil to pass from the engine block, through the internal ports of the lifter and pushrod, and into the valvetrain.

A system includes an engine head that mounts to an engine block of a reciprocating engine, and the engine head includes an intake flow path, an exhaust flow path, a coolant flow path, and first and second sealing registers disposed on opposite sides of the coolant flow path. In addition, the first and second sealing registers are configured to receive a valve guide that supports a valve stem of an exhaust valve. Moreover, the first sealing register is disposed in a wall separating the exhaust flow path and the coolant flow path. Also, a first wall portion of the wall extends between the first sealing register and an exhaust valve seat configured to receive a valve head of the exhaust valve, and a second wall portion of the wall extends from the first sealing register away from the first wall portion.