GB396253A - Rotary internal combustion engine - Google Patents

Abstract

396,253. Rotary engines. GIRARD, E. P., GIRARD, J. A., and EMCH, R., Grenchen, Switzerland. Oct. 31, 1932, No. 30610. Convention date, Nov. 1, 1931. [Class 110 (ii).] A rotary internal-combustion engine of the geared-vane type comprises outer and inner rotors 18, 20, with co-operating radial vanes 25, 29, respectively. The inner rotor is keyed to a shaft 12 mounted in bearings and sleeves 14, 16, 17, 100, 19, and the outer rotor 18 is fixed to an annular shaft 13 supported by a bearing 15 and the above sleeves. Packing rings 34, 35, 38, are provided. Eight inlet valve chests 47 and eight exhaust valve chests 49 revolve with the outer rotor. Two discs 9, 10, connected to each other and to the rotor 18, support two pinions 2 on pins 3. The pinions mesh with internal teeth on stationary rims 1 so that during the rotation of the rotor 18, and the pins 3, the shaft 12 is given an alternate acceleration and deceleration through the connecting links 5, 7. This motion is transmitted to the vanes 25, 29, to cause expansion and contraction of the working chambers. Fuel gas is led to the valve chambers 47 through a conduit 53 to a port 54. Sparking plugs 50, inlet ports 51, and exhaust ports 52 are situated on each side of a radial vane. The plug contact gear is shown to the left of Fig. 1 and comprises a bell-crank lever 68 with a contact 71 kept apart by a spring 69 until a knob 72 on the rotor plate 10 forces the contact gear together, At the time of breaking contact a plug is passing near an energised shoe so that a spark jumps from the shoe to the plug, and also across the plug points. The interior of the rotor 20 is cooled by oil which flows through a pipe' 55 and port 56, and is circulated by a rotating disc 57. Oil passes to lubricating points 58 and leaves through a port 59 to an outlet 60 and pipe 62. A flywheel 11 is fixed to the shaft 13. Cams on a ring 64 operate the inlet valves 39, and cams on a ring 65 actuate the exhaust valves 48. Instead of two toothed rims 1, one or more than one may be provided arranged concentrically but in different parallel planes. The gearing may be replaced by a roller clutch mechanism in which the rotor 20 is intermittently clutched by the outer heavy rotor 18. In a further arrangement two discs rotate around fixed eccentric cams and connect cranks and levers attached to the two shafts 12, 13, to secure the relative motion between these shafts. Several engines may be built on one block, the engines being controllable individually. The inlet and exhaust valves may be replaced by sleeve valves.