Abstract: An internal combustion engine structure in which the cylinder head and main bearing caps are linked by a framework of members including pairs of tension members each angled obliquely to the direct line between head and caps. The members of the framework are arranged so as to bear a substantial proportion of the firing loads of the engine in tension or compression without bending, thus relieving other parts of the engine, especially its outer surfaces, from loads under which they would tend to bend and thus emit noise. The framework may also serve to strengthen parts of the engine wall to make it less susceptible to bending.

Abstract: Method and device for removing the crank-shaft of an internal combustion engine, wherein the frame of the engine is tilted on one side about an axis parallel with the center-line of the crank-shaft, and said crank-shaft is extracted from below.

Abstract: A reciprocating-piston-type internal combustion engine, particularly for the operation of passenger automobiles. The engine includes a cylinder head and a crankcase. The upper portion of the crankcase is integrally casted with the cylinder head. A cavity in the crankshaft is connected with ducts supplying lubricating oil to the bearing surfaces for the connecting rods and to the bearing surfaces of the main bearings.

Abstract: To connect two machine elements which are dynamically loaded by means of tension bolts, the bolts are carried through bores in the machine elements which are somewhat wider than the diameter of the bolts to form a cylindrical chamber, leaving a cylindrical gap surrounding the bolt; the chamber is entirely filled with a damping substance, such as a foamed material, or lubricating oil, particularly pressurized lubricating oil or the like. Preferably, the gap is about 2 to 8 percent of the diameter of the tension bolt, has a length at least three times the diameter of the tension bolt, and is located approximately centered between the points of force application on the tension bolt, to dampen transfer of vibrations, but permit slow bending, below the yield point of the bolt, within the chamber.

Abstract: A crankshaft which is composed of a plurality of individual elements. Each of said elements comprises a crankshaft section with an end face and bearing surface means and also comprises a main shaft journal section with an end face and with bearing surface means. The end faces of pin sections to be connected to each other are electron beam welded together after centering pins have been inserted in bores arranged in, and perpendicular to the end faces to be welded together.

Abstract: An internal combustion engine, which has soundproofing cowling, uses the space between the sidewalls of the cylinder block and the cowling to provide a reservoir for a liquid lubricant media. A cover cap is provided over the fuel injection and valve timing mechanisms, and the space between the cover cap and the cowling, which is over the top of the cylinder head, provides a chamber for receiving coolant from the engine cooling system. The large surface area of the cowling along the sides of the cylinder block accommodates the transfer of heat from the lubricant to the atmosphere. In addition both the lubricant and the coolant serve as sound deadening medias in the sidewall reservoirs and in the overhead chamber.

Abstract: Internal combustion engine structure comprising a one-piece cylinder-block and crankcase casting with integral cylinder-head, of light alloy, and incorporating valve guides, induction ports, exhaust ports, spark plug wells, cooling-water chambers open at the upper portion of the casting around the valve seatings and closed by a cover, said cooling-water chambers extending axially around the cylinders and outside the areas corresponding to the induction and exhaust ports and also to the spark-plug wells, said casting further comprising in said areas around said cylinders a wall portion provided with cooling fins, whereby the casting can be obtained directly from a light alloy in a chill-mould, notably according to the known high-pressure casting process.

Abstract: An internal combustion engine structure in which the tendency of the combustion forces to separate the cylinder head from the crankshaft bearings is resisted by external tie-rod structures attached at opposite ends to engine structure adjacent these two parts. The tie-rods run as nearly as possible in straight lines, and therefore typically lie obliquely to the crankshaft axis and to the transverse planes containing the cylinder axes. The tie-rod structures may be ribs or fins and may also be attached to parts of the engine wall intermediate their ends to make those parts more rigid.

Abstract: An internal combustion engine, the static parts of which are formed as die castings. The engine includes a plurality of cylinders each closed at its upper end by an individual cylinder head casting. Each cylinder head casting has at least two tubular extensions thereon forming air intake and exhaust passageways and at least two valve stem guides. All of the cylinder head castings have flat horizontally extending upper faces all lying in a single plane and on which a valve train casing casting is seated. A single camshaft is journalled in the valve train casing and arranged to operate the intake and exhaust valves of all of the cylinders. The upper end of the valve trains casing is closed by a cover having a breather opening communicating with the interior of the valve train casing and also having air intake openings communicating with the air intake passageway of each cylinder. A shroud is mounted over the cover to define an air chamber which communicates with atmosphere through an air filter.

Abstract: An air-compressing four-cycle reciprocating piston injection internal combustion engine forming a driving engine of a motor vehicle, to which is flangedly connected a transmission by way of a clutch; the connections between the internal combustion engine and the clutch and/or between the clutch and the transmission are provided with such reinforcements that the natural frequencies of the oscillatory system, which includes the masses of the internal combustion engine, of the clutch and of the transmission, are higher than the frequencies of the dangerous exciting oscillations caused by the internal combustion engine constructed as five-cylinder in-line internal combustion engine which cannot be compensated for with the use of acceptable expenditures.

Abstract: A cylinder-crankcase for a multi-cylinder internal combustion engine with a V-arrangement of the cylinders, which consists of welded-together cast housing elements that are connected in series in a building-block-like manner; each of the housing elements includes a cross wall with a bearing socket-half for a crankshaft bearing and two cylinder shells for each cylinder row, whereby the two cylinder rows are mutually offset by the width of a connecting rod bearing and the separating planes of the housing elements do not pass through the cylinder centers; the cross wall thereby includes an upper boundary which is substantially rectilinear but inclined with respect to the center cross plane of the housing element, as viewed in plan view, while imaginary lines starting from this boundary and extending in the neutral center surface of the cross wall in the direction toward the area of the bearing socket are substantially straight lines.