(0)F02B:4/5:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
F02B
5/6
<<   >>   F02B045/00 - F02B057/10  

45
/ 00 Engines operating on other non-liquid fuels; Plants including such engines (plants involving generation of gaseous fuel from solid fuel F 02 B 43/08)

45
/ 02 • operating on powdered fuel, e.g. powdered coal (operating on fuel containing oxidant F 02 B 45/06)  

45
/ 04 • • Plants, e.g. having coal-grinding apparatus  

45
/ 06 • operating on fuel containing oxidant  

45
/ 08 • operating on other solid fuels  

45
/ 10 • operating on mixtures of liquid and non-liquid fuels, e.g. in pasty or foamed state  

Methods of operating engines involving specific pre-treating of, or adding specific substances to, combustion air, fuel, or fuel-air mixture of the engines, and not otherwise provided for (apparatus for performing such pretreatments or additions F 02 M)
 

 47
/ 00 Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines

47
/ 02 • the substances being water or steam  

47
/ 04 • the substances being other than water or steam only  

47
/ 06 • • the substances including non-airborne oxygen (F 02 B 47/10 takes precedence)  

47
/ 08 • • the substances including exhaust gas  

47
/ 10 • • • Circulation of exhaust gas in closed or semi-closed circuits, e.g. with simultaneous addition of oxygen  
 

 49
/ 00 Methods of operating air-compressing compression-ignition engines involving introduction of small quantities of fuel in the form of a fine mist into the air in the engine's intake
 

 51
/ 00 Other methods of operating engines involving pre-treating of, or adding substances to, combustion air, fuel, or fuel-air mixture of the engines

51
/ 02 • involving catalysts  

51
/ 04 • involving electricity or magnetism  

51
/ 06 • involving rays or sound waves  

Internal-combustion aspects of rotary-piston or oscillating-piston engines
 

 53
/ 00 Internal-combustion aspects of rotary-piston or oscillating-piston engines (internal-combustion aspects of rotary pistons or outer members for co-operation therewith F 02 B 55/00)

53
/ 02 • Methods of operating  

53
/ 04 • Charge admission or combustion-gas discharge  

53
/ 06 • • Valve control therefor  

53
/ 08 • • Charging, e.g. by means of rotary-piston pump  

53
/ 10 • Fuel supply; Introducing fuel to combustion space  

53
/ 12 • Ignition  

53
/ 14 • Adaptations of engines for driving, or engine combinations with, other devices (aspects predominantly concerning such devices, see the relevant classes for the devices)  
 

 55
/ 00 Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons

55
/ 02 • Pistons  

55
/ 04 • • Cooling thereof  

55
/ 06 • • • by air or other gas  

55
/ 08 • Outer members for co-operation with rotary pistons; Casings  

55
/ 10 • • Cooling thereof  

55
/ 12 • • • by air or other gas  

55
/ 14 • Shapes or constructions of combustion chambers  

55
/ 16 • Admission or exhaust passages in pistons or outer members  

Internal-combustion aspects of reciprocating-piston engines with movable cylinders
 

 57
/ 00 Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons

57
/ 02 • Fuel or combustion-air supply (cylinder-charge admission or exhaust control F 02 B 57/04)  

57
/ 04 • Control of cylinder-charge admission or exhaust (peculiar to two-stroke engines or to other engines with working-piston-controlled charge admission or exhaust F 02 B 57/06)  

57
/ 06 • Two-stroke engines or other engines with working-piston-controlled cylinder-charge admission or exhaust (with combustion space in centre of star F 02 B 57/10)  

57
/ 08 • Engines with star-shaped cylinder arrangements  

57
/ 10 • • with combustion space in centre of star  
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