Abstract: A water cooled internal combustion engine which comprises a cylinder head cast integrally with both the cylinder block and the housing of an overhead camshaft, and which includes a cooling water room extending over all cylinders of the engine, a cooling water distributor channel extending in the longitudinal direction of the engine and arranged immediately above the exhaust ducts, which themselves extend transversely of the engine to an exterior cylinder head side wall, and jet bores communicating the distributor channel with the cooling water room of each cylinder.

Abstract: Low-noise-level internal combustion engine with an engine unit support and a cylinder head mounted thereon, auxiliary units rigidly connected to the engine unit support and the cylinder head, an engine case surrounding the engine unit support and connected to same by at least one resonance absorbing member.

Abstract: A quick-acting locking device for the detachable connection between a removable housing element, particularly a maintenance cover, and a stationary housing element, comprising at least one cocking lever pivoted on the removable housing element and a flat spring acting as a bending spring and forming two legs, one of the legs engaging with its extremity in the border of the removable housing element.

Abstract: A cooler-cum-blower assembly for internal combustion engines with two water-cooler elements arranged in front of the front side of the engine, said cooler elements being located opposite each other in relation to the longitudinal median plane of the engine and each forming an acute angle with the longitudinal median plane of the engine on the side facing away from the engine, and with an axial blower located in front of the cooler elements and actuated by means of the engine.

Abstract: An apparatus according to the invention utilizes an elongated combustion chamber at least partially surrounded by a cooling air chamber receiving cooling air, directing a portion of the heated cooling air into the combustion chamber, and discharging the remaining heated cooling air into the atmosphere. A number of separated ducts discharge afterburned exhaust gas and are connected to a combustion chamber discharge pipe. Each duct has a wall forming a joint heat exchange surface with the cooling air chamber and the openings of the ducts into the atmosphere are separate from the air chamber opening. The ducts may each be formed of a corrugated metal shell with the corrugation peaks connected with the exterior wall of the cooling air chamber.

Abstract: An internal combustion engine comprising a torsional-vibration balancer mounted on one end of the crankshaft and carrying a fan-wheel blower, said torsional-vibration balancer being enclosed in a sound-absorbing casing having an admission aperture and a discharge aperture for the cooling air.

Abstract: A cooler-cum-blower assembly for water-cooled internal combustion engines, comprising a housing subdivided by means of a partition into two chambers having a sound-absorbing lining, an axial blower impeller arranged in a central aperture of the partition, an air-intake aperture in the housing in the area of the chamber located in front of the impeller, and a water-cooler forming at least part of the peripheral wall of the chamber located behind the impeller.

Abstract: An internal combustion engine having a soundproof casing aerated by a blower and divided by at least one partition wall into two cooling air ducts tightly separated from each other, one of the ducts containing all fuel carrying members of the engine, the second duct containing the members of the exhaust system of the engine, the cooling air ducts being admitted by two partial cooling air flows.

Abstract: A cooler-cum-blower assembly for internal combustion engines with two water-cooler elements arranged in front of the front side of the engine, said cooler elements being located opposite each other in relation to the longitudinal median plane of the engine and each forming an acute angle with the longitudinal median plane of the engine on the side facing away from the engine, and with an axial blower located in front of the cooler elements and actuated by means of the engine.

Abstract: An internal combustion engine comprising a sound-proof encasing surrounding the outer surfaces of the engine in spaced relation thereto, with a cooling-air inlet and a cooling-air outlet, a blower arranged between these apertures within the encasing and actuated by means of the internal combustion engine, and an additional ventilating device for the ventilation of the encasing after the internal combustion engine has been stopped.

Abstract: A sound-proofing encased carburetor internal combustion engine with a carburetor, a fuel tank and a fuel pipe located outside the encasing and a suction pipe extending through the encasing, sealed off at the point where it extends through the encasing, and connecting the carburetor with the internal combustion engine.

Abstract: An internal combustion engine, in particular a Diesel engine, comprising at least one inlet duct consisting of a delivery portion and an adjoining duct portion wound spiral-fashion around the shaft of the associated intake valve, the upper wall of which bulges downwardly at the point of transition from the delivery portion to the spiral-shaped duct portion in such a manner that the cross-sectional area of the inlet duct is reduced above the valve diameter extending at a right angle in relation to the axis of the delivery portion.