IPC Subgroup
F02D 13/02 during engine operation
Introduced: September 1968
Last revised: January 2006
Full Title
Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing > during engine operation
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- Subclass:
- CONTROLLING COMBUSTION ENGINES
2 direct subcodes
Child Classifications
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- F02D 13/04 using engine as brake
- F02D 13/06 Cutting-out cylinders