Wankel Gmbh

Aisin Seiki Company, Ltd.

Avl List Gmbh

Iveco S.p.a.

Fpt Industrial S.p.a.

Josef Speiser

Dankwart Eiermann

Helmut Altendorfer

Gerald Gradwohl

Manfred Fischer

Position-independent rotary piston internal combustion engine

A rotary piston internal combustion engine of trochoidal type of construction with dual-arc or curved mantle runway or inner surface and at least one triangular piston having corners thereof in continuous sliding engagement with the inner runway or surface, such piston being journalled by roller bearings and regulated or controlled by a synchronization gear transmission. An oil-collector groove, channel or trough is provided on the shaft on a side remote from the or synchronization gear transmission. Bores in the eccentric lead from the oil-collector groove, channel or trough to the bearing of the piston and the smallest or most nominal oil quantities or volume for lubrication of such bearings, for lubrication of the synchronization gear transmission as well as the sealing parts of the piston, are provided extending in the eccentric.

Rotary piston internal combustion engine

A lubrication system for a rotary-piston internal combustion engine of the trochoid type with a multi-arc-shaped trochoidal surface and a multi-cornered piston supported on a roller bearing. A dosed quantity of lubricating oil is supplied through an axial bore in the shaft and radial bores in the eccentric into the axial center of the bearing of the eccentric. The outer bushing of this bearing has a U-shaped axial cross-sectional shape and is provided with central radial bores which are aligned with bores in the piston and communicate with axial channels in the piston, the latter channels leading to radial bores in the internal gear of the mechanism. The cross-sectional aperture of these bores may be used to control the quantity of oil supplied to the gear mechanism.

Lubrication system for a rotary-piston internal combustion engine

A machine unit which includes a refrigerating compressor and an internal combustion engine of the trochoid type including pistons revolving in a planetary arrangement on eccentrics of the same eccentric shaft, as well as a ventilatable intermediate sealing arrangement provided in a central casing element between the casing elements of the internal combustion engine and the compressor. As disposed between the eccentric of the internal combustion engine and the main bearing, the intermediate sealing arrangement is composed of two slip rings revolving with the shaft; a stationary intermediate element is provided in the central casing element, the slip rings being in continuous sliding contact with the intermediate element with sealing action through insert rings pressed against the intermediate element under gas pressure respectively spring action, one of the slip rings is prevented from axial displacement in the direction towards the eccentric of the internal combustion engine by a shoulder of the shaft; a pin inserted into the shaft and in engagement with an axial groove in the ring, counters any tumbling and staggering movement in rotation; another slip ring is prevented from axial displacement and rotational tumbling and staggering movement by a ball engaging into a recess in the slip ring.

Refrigerator compressor/internal combustion engine unit of the rotary

Growing community of inventors

Wasserburg, Germany

Josef Speiser