(0)F02B:2/5:

(0)F02B:2/5:

IPC6

SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING

INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL

F02B

3/6

F02B025/00 - F02B033/44

25

/

00

Engines using fresh charge for scavenging cylinders

using unidirectional scavenging

Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke

the cylinder-head ports being controlled by working pistons, e.g. by sleeve-shaped extensions thereof

Engines with oppositely-moving reciprocating working pistons

with one piston having a smaller diameter or shorter stroke than the other

Engines with U-shaped cylinders, having ports in each arm

using reverse-flow scavenging, e.g. with both inlet and outlet ports arranged near bottom of piston stroke

the charge flowing upward essentially along cylinder wall opposite the inlet ports

the charge flowing upward essentially along cylinder wall adjacent the inlet ports, e.g. by means of deflection rib on piston

Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports, not provided for in, or of interest apart from, groups F 02 B 25/02 to F 02 B 25/18

by forming air cushion between charge and combustion residues

Inlet or outlet openings being timed asymmetrically relative to bottom dead-centre

Multi-cylinder engines other than those provided for in, or of interest apart from, groups F 02 B 25/02 to F 02 B 25/24 (internal-combustion aspects of rotary engines with movable cylinders F 02 B 57/00)

with V-, fan-, or star-arrangement of cylinders

Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues (use of driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge F 02 B 33/42)

the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means (in exhaust systems only F 02 B 27/06)

in exhaust systems only, e.g. for sucking-off combustion gases

the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means

Engines characterised by other provisions for charging or scavenging; Details not provided for in, or of interest apart from, groups F 02 B 25/00 and F 02 B 27/00

Other fluid-dynamic features of induction systems for improving quantity of charge (for also imparting a rotation to the charge in the cylinder F 02 B 31/00; structural features of induction systems F 02 M)

Cooling of air intake supply

After-charging, i.e. supplementary charging after scavenging

Modifying distribution valve timing for charging purposes (F 02 B 29/06 takes precedence; valve-gear therefor F 01 L)

Modifying induction systems for imparting a rotation to the charge in the cylinder (structural features of induction systems F 02 M)

in engines having inlet valves arranged eccentrically to cylinder axis (F 02 B 31/08 takes precedence) [6]

by means within the induction channel, e.g. deflectors [6]

Movable means, e.g. butterfly valves [6]

having multiple air inlets [6]

Engines characterised by provision of driven charging or scavenging pumps (introducing fuel into cylinders by air pressure F 02 B 13/00; after-charging F 02 B 29/06; arrangements of such pumps or other auxiliary apparatus on engines F 02 B 67/00; combined engine and pump control, control dependent on variables other than those generic to pump F 02 D)

Engines with pumps for charging or scavenging (with pumps for sucking combustion residues from cylinders F 02 B 35/00; with exhaust-driven pumps F 02 B 37/00)

Engines with reciprocating-piston pumps; Engines with crankcase pumps

with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase

with reciprocating-piston pumps other than simple crankcase pumps

with the working-cylinder head arranged between working and pumping cylinders

with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder

the rear face of working piston acting as pumping member and co-operating with a pumping chamber isolated from crankcase, the connecting-rod passing through the chamber and co-operating with movable isolating member

working and pumping pistons forming stepped piston

working and pumping pistons having differing movements

with crankshaft being arranged between working and pumping cylinders

with pumping-cylinder axis arranged at an angle to working-cylinder axis, e.g. at an angle of 90°

with pumping cylinder situated at side of working cylinder, e.g. the cylinders being parallel

with crankcase pumps other than with reciprocating pistons only

Four-stroke engines characterised by having crankcase pumps

Component parts, details, or accessories of crankcase pumps not provided for in, or of interest apart from, groups F 02 B 33/02 to F 02 B 33/26

Control of inlet or outlet ports (controlling only working-cylinder inlets F 01 L)

Engines with pumps other than of reciprocating-piston type (with crankcase pumps F 02 B 33/02)

with rotary pumps (with cell-type pressure exchangers or the like F 02 B 33/42)

of positive-displacement type

of non-positive-displacement type

with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers (pressure exchangers per se F 04 F 11/02)

Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs (cooling of charge after leaving pump F 02 B 29/04)

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