IPIQ

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F02

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

F02D

CONTROLLING COMBUSTION ENGINES

13/00

Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing

F02D13/02

during engine operation

F02D13/0203

Variable control of intake and exhaust valves

F02D13/0215

changing the valve timing only

F02D13/0219

by shifting the phase, i.e. the opening periods of the valves are constant