Patent GB-616101-A (GB)
Title: Improvements in and relating to internal combustion engines of the swash-plate or wobbler type
IPC: F02B75/26
Filed: 1946-08-27
Abstract: 616,101. Driving gear; valve gear; cylinders; ignition. WOOLER, J. Aug. 27, 1946, No. 25648. [Classes 7 (ii), 7 (iv) and 7 (vi)] In a multi-cylinder internal-combustion engine of the type in which a plurality of cylinders having opposed pistons are connected to actuate swashplates mounted on a common shaft and about which the cylinders are located and in which the piston-rods are each connected with its associated piston and with a swash-plate by joints of the ball-and-socket type, there is provided on the common shaft a toothed wheel meshing with pinions in turn meshing with a rotatable element furnished with cams adapted to actuate inlet and exhaust valves, the common shaft being formed with two crank portions between which is located an externally-toothed wheel meshing with pinions which in turn mesh with internal teeth in a rotated member in the form of a sleeve, the outer surface of which is formed with cam elements for actuating the inlet and exhaust valves. A main casing 1 houses a number of cylinders 7 whose axes are parallel to a common shaft 5, which latter is formed with cranks 6 and supported by bearings 4 in end casings 2. A pair of opposed pistons 10 is provided in each cylinder 7 and each piston 10 is connected to a swash-plate 12 by a pistonrod 11 with a spherical type joint at each end. An individual combustion chamber is provided for each cylinder 7 and is in the form of a separate casing detachably secured to the exterior of the main casing 1. Each swashplate 12 incorporates a bush 13 which extends between flanges 14 and is rotationally restrained by means of a torque-rod pivotally connected to the casing. The compression ratio may be adjusted by sliding the swash-plates 12 upon the cranks 6. The end of the common shaft 5 which extends into a casing 43 and a sleeve 44, the latter being rotationally mounted upon the common shaft 5, is fitted with a worm-wheel 45. The casing 43 is provided with two pairs of axially aligned sockets 46 on each pair of which there is rotatably mounted a shaft carrying a worm meshing with the wormwheel 45. These shafts embody a cross-slot or other engaging means and are stated to be capable of uses for driving oil and water pumps, magnetos and distributors. A sun pinion 32 on the common shaft 5 engages pinions 30, journalled upon diametrically split ring plates 31, that mesh with a gear ring. 29 rotatably mounted upon the common shaft 5. Cams 33, 34 are formed on the outer surface of the gear ring 29, and at each end, in order to operate the valves through radial push-rods and rocker arms. The cams 33 actuate the inlet valves and cams 34 the exhaust valves. The induction pipe 38 is detachably secured as a manifold around the end casing 2 on one side of the combustion chambers whilst the exhaust manifold is similarly constructed on the other side. The combustible mixture as gas is arranged to be in heat-exchange relationship with the engine oil by passing the former through a casing 40 with an inlet 41 and outlet 42 for the engine oil. In a modification, the oil may be passed through a pipe coiled around a passage between the carburetter and the induction pipe 38. It is stated in the Provisional Specification that adjustment of the compression ratio may be effected by hand or automatically by hydraulic pressure, or by a hand-controlled valve.