Fichtel & Sachs Ag

Wankel Super Tec Gmbh

Wolfgang Baier

Dankwart Eiermann

Walter Kurz

Rudolf Klotz

Michael Schirmer

Manfred Mäthner

Manfred Lutz

Reinhard Deppert

Hilmar Gobel

Heiko Schulz-Andres

Alfred Eusemann

Jens Schneider

Andreas Gebauer

Reinhart Deppert

Uwe Meinig

A rotary combustion engine includes a peripheral housing, side housing plates, a piston, and an eccentric shaft, where the triangular piston mounted on the eccentric shaft rotates between the side plates around an epitrochoidal orbit with a long and short axis inside the housing to form three working spaces, where the gas exchange is controlled by an intake port and an exhaust port. Fuel is supplied by an injection nozzle located on the short axis of the peripheral housing, and combustion is initiated by a spark plug located shortly after the injection nozzle in the housing relative to the direction of rotation of the piston. Nozzle bores in the injection nozzle are designed in such a way that, in conjunction with a multi-fuel injection system, they guarantee reliable ignition of the fuel during each cycle.

Rotary combustion engine, designed for diesel fuel

A rotary combustion engine with at least one working unit, which has essentially a peripheral engine housing, a side housing plate on one side, a side housing plate on the power takeoff side, a triangular piston, and an eccentric shaft. The piston is configured of several parts, which are connected to each other. The connection is accomplished by electron-beam welding under vacuum, which yields excellent results as long as certain conditions are met. The one sidewall and the power takeoff sidewall of the piston are preferably welded to a piston housing, as a result of which the casting molds can be of simpler design and simpler contours can be used, which leads to welds of higher quality and to a decrease in the costs of casting.

Piston for a rotary combustion engine

A rotary combustion engine includes a peripheral housing, a front housing plate, a rear housing plate, a piston, and an eccentric shaft, where the piston rotates to form three working spaces separated from each other by the tips of the piston. Shaft seals and piston seals seal off the oil-carrying interior space of the internal combustion engine, and the piston is sealed off against the front and rear housing plates by arcuate strips, which are bounded radially on the inside by an envelope curve. The gas forming in the working space during the combustion phase is under high pressure. Some of this gas leaks around the arcuate strips and flows inward along the flat surfaces of the front and rear plates by way of ring-shaped channels in the piston, thus arriving in recessed areas inside the envelope curves, from which it is then escapes through vent channels.

Rotary combustion engine with an improved inner seal

An eccentric shaft for an internal combustion engine, especially for a rotary combustion engine, the working unit of which comprises essentially a peripheral housing, side housing plates, and a triangular piston mounted on an eccentric of an eccentric shaft, the tips of the piston moving along an epitrochoidal orbit inside the peripheral housing to form three separate working spaces, where the rotary combustion engine can have several working units. The eccentric shaft consists of several parts, which have radial teeth at their ends, by means of which these shaft parts can be connected positively to each other by the use of a tie rod. In rotary piston engines with more than one working unit, as many inner shaft parts of identical design as there are working units can be used in modular fashion to construct the eccentric shaft.

Eccentric shaft for an internal combustion engine

A rotary combustion engine with one or more working units, which include a peripheral housing, a front housing plate, a rear housing plate on the output side, an eccentric shaft, and a piston, where the eccentric shaft includes an eccentric, and front and rear sealing parts. Lubricating oil is conveyed by an oil pump from an oil tank through the eccentric shaft to first and second main bearings, and to an eccentric bearing, from which a bevel on the front sealing part conveys it to a piston space, from which it is conveyed by way of a bevel on the piston and a rear bevel back to the oil tank to close the oil circuit. The bevels direct the oil circulation from the front of the working unit to the rear, reduce splash losses, and increase the cooling action on the internal surfaces of the piston.

Rotary combustion engine with device for conveying lubricating oil

A system of fastening a flywheel on an output end of a crankshaft of an internal combustion engine, the flywheel being combined into a single component with a clutch plate unit and a clutch disc. The fastening can be achieved with essentially axial joint surfaces on the output end on one hand, and on the flywheel on the other hand, wherein the joint surfaces are designed as tapered or cylindrical surfaces which are self-locking in the axial direction.

Transmission having a clutch with an arrangement for fastening the

An input component (3) of a clutch is fastened to the output end (5) of the crankshaft (7) of an internal combustion engine by a force-fit coupling (11) in which a radial force fit is produced by axial forces which are applied to the coupling (11) by a tool inserted through the hub (21) of a clutch disc (23) or applied to the hub, which in turn applies the axial force on the coupling. The coupling enables the clutch (1), including the flywheel (3) and the clutch disc (23), to be installed on the crankshaft (7) as an assembled unit. The force-fit coupling (11) comprises an expanding conical, element (61), arranged in a central opening (59) of the output end (5) of the crankshaft (7), which expands the output end (5) of the crankshaft radially.

Arrangement for fastening a clutch to a crankshaft

According to an illustrative embodiment of the invention, a planetary gear box is combined with an electric generator of a motor-vehicle. The planetary gear box comprises a free wheel and a gear change clutch. Such, the transmission ratio of the planetary gear box is changeable. The components of the gear box are arranged at least partially in axially overlapping relationship so that a small overall axial dimension is obtained.

Gear unit for combination with an auxiliary power consuming unit of a

According to an illustrative example of the present invention, an internal combustion engine is provided with a gear box. This gear box is driven by an end portion of the crank shaft. A belt pulley is provided around the axis of the gearbox. The belt pulley drives through a belt an electric power generator. The gear box contains a planetary gear of variable transmission ratio. The change of transmission ratio is effected by an hydraulically operated clutch. The hydraulically operated clutch is actuated by a hydraulic actuating device. The hydraulic actuating device is actuated by oil pressure. The oil pressure is obtained by a hydraulic pump integrated into the gear box. Further components of the circuitry containing the pump and the hydraulic actuating device are provided outside the gear box. These external components are carried by a carrier plate. This carrier plate contains side by side channels of the hydraulic circuitry. Simultaneously, the carrier plate acts as a torque support for the gear box which is mounted on the end portion of the crank shaft.

Combination of two-stator-rotor units with a connecting gear unit

A torque transmission unit is connectable to an internal combustion engine in order to drive a secondary unit with different transmission ratios in dependence upon the rotation rate of the internal combustion engine so that in the case of a low rotation rate of the internal combustion engine the transmission ratio is greater and in the case of a great rotation rate of the internal combustion engine the transmission ratio is less. The torque transmission unit comprises a planetary gear, a free-wheel and a clutch. By the clutch a part of the planetary gear can be coupled to or separated from another part of the planetary gear or a stationary support part, according to choice. The clutch is hydraulically actuable. The pressure for the hydraulic actuation of the clutch is delivered by a hydraulic pump which is integrated into the torgue transmission unit and is independent from the lubricant circuit of the internal combustion engine.

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Obbach, Germany

Wolfgang Baier