Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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F02B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
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37/00
Engines characterised by provision of pumps driven at least for part of the time by exhaust
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F02B37/22
by varying cross-section of exhaust passages or air passages; , e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits;
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