by using heat from working cylinders or cylinder heads

Full Title

Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture > for heating > by using heat from working cylinders or cylinder heads

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Subclass:

SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF