Abstract: A cylinder head for a water-cooled internal combustion engine has a lower and an upper cylinder head portion fitting over one another along a parting plane traversing cooling chambers complementally formed in the lower and upper cylinder head portions. The lower cylinder head portion has intake and exhaust ports and is tightened to a cylinder block. The upper cylinder head portion carries a valve operating assembly of the engine. A cylinder head cover is situated above the upper cylinder head portion and covers the valve operating assembly. The lower cylinder head portion has a circumferential lower wall bounding a liquid-guiding chamber provided in the lower cylinder head portion and serving for returning oil from the upper cylinder head portion. The lower cylinder head portion also has a circumferential upper wall constituting an upward continuation of the lower wall and extending from the intake and exhaust ports.

Abstract: An ignition device for a spark-ignited internal combustion engine wherein the essential components of the ignition device of a spark-ignited internal combustion engine are combined into an assembly unit which, following preassembly, is removably joined with the internal combustion engine.