An integral gas compressor and internal combustion engine. The compressor is built by converting a portion of an internal combustion engine to a compressor by removing the original engine head and valve train and replacing these with a compressor head assembly. The compressor head assembly includes compressor valves and valve chairs for holding the compressor valves in place. An inlet manifold encloses all of the valve chairs and places all of the inlet flow paths through the valve chairs in com...

At the time for forming an internal gear from a raw material 2 of an internal gear, first, the raw material 2 is externally inserted onto a forming die 3 and fixed to the forming die 3 through a pressing die 4. Next, a forming roll 5 is moved in a direction as indicated by an arrow B of FIG. 6 while rotating the forming die 3. By this, the inner peripheral surface of the raw material 3 is pressed against an outer gear part 3b formed on the outer peripheral surface of the forming die 3 so that an...

An internal combustion engine, Z-engine. The compression part and the working part are separated. New gas is transported to the upper side of the piston. Below there is a small chamber corner. When the piston comes nearer the upper hollow part, the combustion gases go out from the cylinder through exhaust-valves. After the changing of the gas, before filling the upper chamber, there is a secondary compression, the firing of the mix, or fire. In advance of the compression can be other than the vo...

An internal grinding method for grinding an inner surface of a work having a straight line generatrix shape while performing an in-process inner-diameter size measurement intermittently through oscillation synchronized between a grindstone and a measurer; wherein a circumferential surface of the grindstone is trued into a shape inclined with respect to a moving direction of a X-axis slide table moving forward/backward relative to the work so that normal grinding force when the X-axis slide table...

The formation of non-circular bores in metal parts achieved by drilling a circular bore and ramming a mandrel (or punch) of the desired cross sectional configuration through the circular bore to cause a displacement of metal, primarily radial in character to complete the bore. The invention is particularly useful in working on steel, and the mandrel for this purpose should be of very hard, preferably tungsten carbide steel, whereby a fine micro smooth finish in the bore is produced. The pieces a...

An internal combustion engine with internal mixture formation, particularly a diesel engine, with two intake valves for each cylinder, through which the air for combustion is directed into the cylinder in a flow rotating about the cylinder axis, and with means for the formation of a branch air current at least at one of the intake valves whose direction of flow in the cylinder is opposed to the sense of rotation of the air for combustion entering the cylinder through the remaining intake valve c...

The invention relates to a two-stroke internal combustion engine with longitudinal scavenging, with at least one piston reciprocating in a cylinder, with at least one exhaust valve disposed in the cylinder head floor and with at least one intake slot per cylinder which can be passed by a control edge of the piston, with at least one exhaust gas recirculation conduit for the recirculation of exhaust gas into the combustion chamber and at least one exhaust gas recirculation valve for controlling t...

An internal combustion engine is provided wherein the crankcase is sealed from the oil pan to provide an airtight compression chamber wherein the air is compressed by action of the pistons. Air is withdrawn from the atmosphere through one-way valves on the engine block. The compressed air is then passed from the compression chamber into, optionally, a compressed air storage means where it is regulated through a valve for mixture with the air-fuel mixture from the carbureting means, thereby provi...

A multicylinder internal combustion engine, which can simplify its control and is advantageous against thermal loads or vibrations includes a cylinder head with intake valves and exhaust valves arranged therein. Valve actuators are provided for openably operating the intake valves and exhaust valves, respectively. A cylinder head cover forms, in combination with the cylinder head, a valve actuator chamber with the valve actuators accommodated therein. At least some of the valve actuators are dea...

A valve actuation system for providing added motion in the valve mechanism of an internal combustion engine with at least one inlet valve and at least one exhaust valve is provided. The valve mechanism includes a rotatable camshaft including rising and falling ramps designed to interact with a valve control plunger inside a cylinder for actuation of the inlet or exhaust valve under the action of a valve spring. The cylinder communicates with a hydraulic fluid feed line via a check valve and with...