GB291119A - Improvements in rotary internal combustion engines - Google Patents

Abstract

291,119. Plancht, M. R. Nov. 23, 1926. Movable-abutment type; working-fluid supply; valve gear; cooling; packing drums, vanes, and abutments; starting.-In a rotary internal. combustion engine of the type having rotary abutments 9<1>, 9", 9<111> which engage the periphery of a vaned rotor 4<1> to divide the annular space 6<1> between the rotor and the casing into a number of sections, a charge is admitted into one section, compressed therein, and then introduced into the adjacent section through internal passages in the abutment 9<1> separating these sections, where it is ignited and after expansion exhausted. The figures show an engine with three abutments; the third section of the annular chamber 6<1> is used for compressing air which is fed to a. chamber 45 and cooling ducts 49 in the abutment 9<1> and also to the vane recess 10<1> therein and may be stored in a container for starting purposes. The engine is reversible by means of the valve gear shown in Fig. 20. A charge is drawn in from the carburetter 64 through valve 54 and pipe 63 to the right hand section of the annular chamber where it is compressed and discharged through a pipe 58 and valve 52 to a container 59. From the container 59 it passes to a distributing plug member 38, Fig. 17, which co-operates with a ported sleeve 33, Fig. 15 housed in the abutment 9<1> and controlling the admission of the compressed charge through internal passages 37 or 36 in the abutment 9<1>. The charge passes to the left hand section of the annular chamber through the internal passages 37 and is fired by the plug 106 and subsequently exhausted through a pipe 62 and valve 67. The bottom section of the annular chamber is used to draw in air through the valve 67 and after compression delivers it through the pipe 73 and a valve 55 to a reservoir 76. The compressed air is fed by a pipe 77 to cooling ducts 49 in the top abutment and also to the recess 10<1> which engages the piston vanes. Excess of the compressed charge in the container 59 is returned to the right hand section of the annular chamber past a valve 53 and pipe 61 which opens into the pipe 63 from the carburettor. For reversal of the engine the ported sleeve valve 33, Fig. 15, which surrounds the distributing plug 38, Fig. 17, is moved through an angle so that passages 36 on the other side of the recess 10<1> of the abutment now admit a compressed charge to the right hand section of the annular chamber. The valves 52, 53, 54, 55, and 67 with its corresponding valve 68 are linked with the operating handle 34 of the sleeve 33 so that all are simultaneously actuated: the operating handle 34 also carries electrical contacts to control the ignition for reversing. The abutment shaft carries an ignition distributor. The rotor and abutments are fitted with packing strips 21 on the periphery and the rotor with end packing rings 25 which are prevented from moving on the rotor by cross pieces 31 fitting in radial recesses in the rotor ends, Fig. 9. Cooling water for the casing 1<1> is supplied by a pump 99 driven from the engine shaft. The engine may be started in either direction by compressed air from the reservoir 76.