(0)F02B:3/5:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
F02B
4/6
<<   >>   F02B035/00 - F02B043/12  

35
/ 00 Engines with pumps for sucking combustion residues from cylinders

35
/ 02 • using rotary pumps  
 

 37
/ 00 Engines with pumps driven at least for part of the time by exhaust (passages conducting the charge from the pump to the engine inlet F 02 B 33/44)

37
/ 007 • with exhaust-driven pumps arranged in parallel [6]  

37
/ 013 • with exhaust-driven pumps arranged in series [6]  

37
/ 02 • Gas passages between engine outlet and pump drive, e.g. reservoirs  

37
/ 04 • Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump  

37
/ 10 • • at least one pump being alternately driven by exhaust and other drive [3]  

37
/ 11 • • • driven by other drive at starting only [6]  

37
/ 12 • Control of the pumps [3]  

37
/ 14 • • of the alternation between exhaust drive and other drive of a pump, e.g. dependent on speed [3]  

37
/ 16 • • by bypassing charging air [6]  

37
/ 18 • • by bypassing exhaust [6]  

37
/ 20 • • by increasing exhaust energy, e.g. using combustion chambers [6]  

37
/ 22 • • by varying the cross-section of exhaust passages or air passages [6]  

37
/ 24 • • by using pumps or turbines with adjustable guide vanes [6]  
 

 39
/ 00 Component parts, details, or accessories relating to, but not provided for in, or of interest apart from, groups F 02 B 33/00 to F 02 B 37/00 (pumps in general F 04; machine elements in general F 16)

39
/ 02 • Drives of pumps (exhaust drives or combined exhaust and other drives F 02 B 37/00); Varying pump drive gear ratio (control acting both on engine and on pump drive gear ratio F 02 D)  

39
/ 04 • • Mechanical drives; Variable-gear-ratio drives (non-mechanical pump drives having variable gear ratio F 02 B 39/08)  

39
/ 06 • • • the engine torque being divided by a differential gear for driving a pump and the engine output shaft  

39
/ 08 • • Non-mechanical drives, e.g. fluid drives having variable gear ratio  

39
/ 10 • • • electric  

39
/ 12 • • Drives characterised by use of couplings or clutches therein (using fluid slip couplings for varying gear ratio F 02 B 39/08)  

39
/ 14 • Lubrication of pumps; Safety measures therefor  

39
/ 16 • Other safety measures for, or other control of, pumps  
 

 41
/ 00 Engines with special means for improving conversion of heat or pressure energy into mechanical power

41
/ 02 • Engines with prolonged expansion  

41
/ 04 • • in main cylinders  

41
/ 06 • • in compound cylinders  

41
/ 08 • • • Two-stroke compound engines  

41
/ 10 • • using exhaust turbines (use of exhaust turbines for charging F 02 B 37/00; turbine constructions F 01 D; gas-turbine plants F 02 C)  

Engines operating on non-liquid fuels; Plants including such engines, i.e. combinations of the engine with fuel-generating apparatus (engines having gas-air charge ignited by compression ignition of an additional fuel F 02 B 7/06; engines convertible from gas to other fuel consumption F 02 B 69/04; apparatus for generating fuel, e.g. gas, see the relevant classes, e.g. C 10)
 

 43
/ 00 Engines operating on gaseous fuels; Plants including such engines

43
/ 02 • Engines characterised by means for increasing operating efficiency  

43
/ 04 • • for improving efficiency of combustion  

43
/ 06 • • for enlarging charge  

43
/ 08 • Plants characterised by the engines using gaseous fuel generated in the plant from solid fuel, e.g. wood  

43
/ 10 • Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen  

43
/ 12 • • Methods of operating  
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