(0)F02B:0/5:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
F02B
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F 02

 COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines F 01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

F 02 B

 INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (internal-combustion turbines F 02 C; plants in which engines use combustion products F 02 C, F 02 G)
 

Notes

(1)

 In this subclass, the following terms or expression are used with the meanings indicated:
 

-

 "positive ignition" means ignition by a source external to the working fluid, e.g. by spark or incandescent source;
 

-

 "charging" means forcing air or fuel-air mixture into engine cylinders, and thus includes supercharging;
 

-

 "scavenging" means forcing the combustion residues from the cylinders other than by movement of the working pistons, and thus includes tuned exhaust systems.

(2)

 Attention is drawn to the Notes preceding class F 01, especially as regards Note (1).

(3)

 Engines with specified cycles or number of cylinders are classified in group F 02 B 75/02 or F 02 B 75/16, unless other classifying features predominate.

 

 

 

Engines characterised by the working fluid to be compressed, or characterised by the type of ignition (with both fuel-air mixture compression and air compression, or with both positive ignition and compression ignition F 02 B 11/00; with precombustion chambers F 02 B 19/00; having air-storage chambers F 02 B 21/00; with special shape or construction of other combustion chambers F 02 B 23/00)
 

 1
/ 00 Engines with fuel-air mixture compression

1
/ 02 • with positive ignition (with non-timed positive ignition F 02 B 9/06)  

1
/ 04 • • with fuel-air mixture admission into cylinder  

1
/ 06 • • • Methods of operating  

1
/ 08 • • with separate admission of air and fuel into cylinder  

1
/ 10 • • • Methods of operating  

1
/ 12 • with compression ignition (with fuel-air charge ignited by compression ignition of an additional fuel F 02 B 7/00)  

1
/ 14 • • Methods of operating  
 

 3
/ 00 Engines with air compression and subsequent fuel addition

3
/ 02 • with positive ignition (with non-timed positive ignition F 02 B 9/06)  

3
/ 04 • • Methods of operating  

3
/ 06 • with compression ignition (F 02 B 13/02 takes precedence; with fuel-air charge ignited by compression ignition of an additional fuel F 02 B 7/00 )  

3
/ 08 • • Methods of operating (F 02 B 3/12 takes precedence)  

3
/ 10 • • with intermittent fuel introduction  

3
/ 12 • • • Methods of operating  
 

 5
/ 00 Engines with positive ignition (F 02 B 1/02, F 02 B 3/02 take precedence; with non-timed positive ignition F 02 B 9/06)

5
/ 02 • Methods of operating  
 

 7
/ 00 Engines with fuel-air charge ignited by compression ignition of an additional fuel (with pre-combustion chambers F 02 B 19/00)

7
/ 02 • the fuel in the charge being liquid  

7
/ 04 • • Methods of operating  

7
/ 06 • the fuel in the charge being gaseous  

7
/ 08 • • Methods of operating  
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