GB190708125A - Improvements in Explosive Engines. - Google Patents

Abstract

8125. Rehill, P. V. April 8. Fixed-abutment type with oscillating vans. In an engine of this type the mixture is compressed and exploded in the working spaces a<3> and is allowed to expand further in the working spaces a<4>. The oscillating piston C divides the engine, so far as the gases are concerned, into two independent parts. Each chamber a<3> has an inlet valve O and an outlet valve O<1>, and each chamber a4 has an inlet valve O<2> at the end of a passage a<2> and an outlet valve O<3>. Considering the right-hand part only, for example, the liquid fuel collects in a chamber p<1> from which it is forced by a piston o<1> when the valve O is opened. The fuel mixes with the air which enters through a pipe p<4> and passes into the chamber a<3>, where it is compressed by the return stroke of the piston and then fired by a usual igniter. After the working stroke is completed, the hot gases are swept out of the chamber a<3>, past a valve and down a passage into the lower expansion chamber by way of another valve (these parts being similar to the corresponding parts 0', a<2>, O<2> of the left-hand engine), where it expands for one stroke and then is allowed to escape through an exhaust valve O<3>, The valves are operated by levers and cams on shafts which are rotated at half speed by worm gearing. The engine may be worked on a twophase cycle, in which case gas is exploded in the upper chambers without compression, and is discharged at each return stroke into the expansion chambers, thereby avoiding the alternate idle strokes in the latter chambers. The expansion chamber may be of greater radial depth than the explosive chambers so that the expanding gases may work upon a greater area of piston. The power of the engine can be halved by using one side only. The engine may be constructed so that the chambers may be lengthened axially by the addition of similarly shaped castings, either with or without extra valve-gear.