the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means

Full Title

Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues > the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

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

Subclass:

INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL