Patent GB-1110161-A (GB)
Title: Improvements in or relating to rotary machines
IPC: F02B53/00
Filed: 1964-07-09
Abstract: 1,110,161. Rotary internal combustion engines and pumps; reciprocating pumps. K. EICKMANN. July 9, 1964, No. 964/64. Headings F1A and F1F. A combined rotary I. C. engine and rotary hydraulic pump comprises first, second and third I. C. engine units contained in casings 1, 101, 201, Fig. 1, having rotors coupled together to drive a common output shaft connected by a clutch 29A to a shaft 29 eccentric with respect to the output shaft of a rotary hydraulic pump. The I. C. engine units are all basically of the same construction but differing somewhat in detail. The references refer to the unit in casing 1 which houses a rotor having a centre part 2 and end walls 4, 5 of greater radial extent having inner faces 13, 14 embracing side faces 60, 61 of a stationary track ring 8 having an inner profile 12, Fig. 3, formed by two spaced apart semi-circular parts connected together by planar parts with the rotor concentric with respect to the geometric axis of the track ring 8 and abutting the track ring at the mid points of the planar parts. The centre part 2 is formed with a plurality of radial axially extending slots 27 and the end walls 4, 5 with axially aligned extensions 28 thereof for slidably . mounting vanes 9 having axial extensions 15, 16. The axial extensions 15, 16 are formed with radial extensions 19, 20 which embrace the side faces 60, 61 of the track ring 8 to seal thereagainst. In this unit end covers 6, 7 close the ends of the slot extensions and seal against the track ring, seal rings 41 which may be made in a plurality of parts 41A to 41F being housed in grooves 40 in the track ring to enhance the sealing. Air-fuel mixture admitted to a working chamber 25A is compressed on clockwise rotation of the rotor and on reaching its smallest volume at position of chamber 25C is ignited by spark-plug, hot wire or other means. The expanding gases then rotating the rotor and finally exhausting at the location of chamber 25F. Alternatively air may be admitted into chamber 25A whence fuel is injected into chamber 25C. A stationary and if necessary rotatably adjustable control pintle 89 mounted within an axial bore 55 of the rotor is formed with inlet and outlet passages 89E, 89F which pass hydraulic fluid through radial control ports in the pintle to and from the slots 27 and extensions 28 in the rotor beneath the vanes and their extensions. The reciprocation of the vanes in the slots pumping the fluid to cool and lubricate the unit. The trackring, rotor, vane and vane extensions having cooling spaces connected by suitable passages. The vanes 9 include slippers 11 mounted on pivots 10 which as the rotor rotates sealingly engage the profile 12. The slippers are each formed with a flat surface 90A to seal against the planar parts of the profile and with curved surfaces 90B, 90C to seal against the semi-circular parts of the profile with a space 90D between the surface 90A and the profile containing lubricant. The profile of the track-ring (108) Fig. 5 (not shown) is substantially elliptical with the faces of the slippers being made to correspond. The hydraulic pump in casing 301, Fig. 11, comprises a stator 302 formed with a plurality of radial slots slidably mounting abutments 309 engaging the periphery of a track-ring 308 rotatably mounted on the eccentrically disposed shaft 29. Between each pair of adjacent abutments is located an inlet valve 49 and an outlet valve 50 leading to and from a variable volume chamber through which hydraulic fluid is pumped. The flows of the separate chambers may be used separately or combined as desired to drive, e. g., hydraulic motors. Similarly to the I. C. engine units, the stator 302 includes radially inwardly extending end plates having axially and radial extensions of the abutment slots within which extensions of the abutments slide to embrace the side faces of the track-ring 308.