F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
60/8
F02B 37/00 (2006.01) F02B 37/02 (2006.01)
Patent
CA 1210937
ABSTRACT This invention relates to apparatus that compresses the combustion air, or the air-fuel mixture, prior to being admitted to the combustion chambers of internal combustion engines. The invention is applicable to engines having multiple combustion chambers. The pre-compression is cur- rently practised as an option in piston-type engines by means of supercharging compressors; whereas in dual-shaft gas turbines - being indispensable - it is achieved by the gasifier charging compressors. Both types of compressors are driven by turbines utilizing a partial expansion of the whole volume of burnt gases produced in the engine. The main feature of the invention is that only a fraction of the total volume of produced burnt gases is employed in the driving turbines. In a given multicylinder engine, said fraction is delivered as active exhaust gases - through a separate exhaust system - by a selected number of cylin- ders from the engine's set of cylinders. The active condition of the gases is achieved by suitable adjustments of the mechanism commanding the operation of the selected cylin- ders. In the remaining cylinders, the combustion products undergo a feasibly complete expansion. Likewise in a dual- shaft gas turbine the fraction of burnt gases delivered to the gasifier turbine as working substance, is obtained from a selected number of combustors, from the engine's combus- tors set. The burnt gases from the remaining combustors are fed to the power turbine to produce the power output. The implementation of the invention will result in: an eco- nomical use of the thermal energy developed by the combus- tion of the fuel, a better control of the pre-compressing apparatus, and a reduced size of the driving turbines that will handle a diminished volume of working substance.
493025
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