CYLINDER HEAD FOR AN INTERNAL COMBUSTION ENGINE

• Main Authors: HERMANNS MARKUS, MEHRING JAN, LUTZ MARTIN, DUNSTHEIMER JENS, HOLBACH CHRISTOPH, KUHLBACH KAI SEBASTIAN
• Format: Patent
• Language: English
• Published: 18.12.2008
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

The invention relates to a cylinder head (1) which, at an assembly end-side (9), can be connected to a cylinder block, having a coolant jacket (2), which is at least partially integrated in the cylinder head (1), for an internal combustion engine having at least two cylinders, in which each cylinder has at least one outlet opening (3a, 3b) for discharging the exhaust gases out of the cylinder, with an exhaust-gas line (4a, 4b) adjoining each outlet opening (3a, 3b), the exhaust-gas lines (4a, 4b) of the at least two cylinders merging within the cylinder head (1) to form a combined exhaust-gas line (6), and the coolant jacket (2) having a lower coolant jacket (2a), which is arranged between the exhaust-gas lines (4a, 4b, 5, 6) and the assembly end-side (9) of the cylinder head (1), and an upper coolant jacket (2b), which is arranged on that side of the exhaust-gas lines (4a, 4b, 5, 6) which is situated opposite the lower coolant jacket (2a). It is intended to provide a liquid-cooled cylinder head (1) of the generic type which has optimized cooling. Said object is achieved by means of a cylinder head (1) of the above-specified type which is characterized in that, at a distance from the exhaust-gas lines (4a, 4b, 5, 6), at least one connection (7) between the lower coolant jacket (2a) and the upper coolant jacket (2b) is provided in an outer wall (10), from which the combined exhaust-gas line (6) emerges, of the cylinder head (1), which connection (7) serves for the passage of coolant.