GB337092A - Improvements in internal combustion turbines - Google Patents

Abstract

337,092. Matthews, A. Aug. 8, 1929. Jet-wheels; working-fluid supply. - An internal-combustion turbine has rotor blades receiving impulses from a plurality of rotary combustion chambers arranged round the casing. In the form illustrated the rotor 2 has blades 4, 4<a> on either side of fixed blades 5. Four combustion chambers 7 are arranged on the casing 1. These chambers have diametrically opposite ports 15, 15<a> and are rotated on the shafts 9 from the main shaft 10 by gearing 11, 12, 12<a>, 9<a>, and belts 14 at half the speed of the rotor and in the opposite direction. The cycle of operation is as follows : When one of the ports 15, 15<a> registers with the air admission port 20 in the casing 8, air is forced through this port into the chamber 7 to blow the residual gases out through the port 21 as indicated at A, Fig. 4. These gases discharge by way of pipes 21<a> into the exhaust pipes 29. The port 15<a> then comes into register with the fuel inlet port 22 as shown at B and fuel is injected into the chamber through a valve 30, Fig. 2. Further rotation brings the port 15<a> into register with the ignition port 23 (See Fig. 4) when the plug 23<a> ignites the charge. The opposite port 15 then comes into register with the port 24 leading to the jet 25 whence the gases impinge on to the blades to drive the rotor. Two such cycles of operations occur for each revolution of the combustion chamber. The fuel injector 30 is provided with an adjustable spray control 31 and communicates with a fuel pump 33 of the spring- pressed piston type, operated by the concentric 36 on the main shaft. The pistons have plungers with rollers 40 engaging rockers 41 running at one end of an eccentric 36, and pivoted on a ring 43 at the other end. The ring can be rotated by the handle 44 to vary the strokes of the pistons. The air valves 48 are in the form of tappet valves operated by the eccentric 49 to supply compressed air from the reservoir 51. The reservoir is filled by the compressors 52 of the rotary pump type. The combustion chambers and turbine can be air or water cooled by aid of the passages 70.