|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

ENGINES AND PUMPS

|  | F02 |
COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines Fulltext... Hierarchy... Expanded...F01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

|  | F02F |
CYLINDERS, PISTONS, CASINGS OR CRANKCASE VENTILATION FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES (specially adapted for rotary-piston or oscillating-piston internal-combustion engines Fulltext... Hierarchy... Expanded...F02B; specially adapted for gas-turbine plants Fulltext... Hierarchy... Expanded...F02C; specially adapted for jet-propulsion plants Fulltext... Hierarchy... Expanded...F02K)

|  | F02F |
Note(s) Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01. In considering the relationship between class Fulltext... Hierarchy... Expanded...F16 and sub-class Fulltext... Hierarchy... Expanded...F02F, class Fulltext... Hierarchy... Expanded...F16 will take precedence unless the subject-matter is specific to combustion engines.

|  | F02F 1/00 |
Cylinders; Cylinder heads (in general Fulltext... Hierarchy... Expanded...F16J)

|  | F02F 1/02 |
· | having cooling means (cylinder heads Fulltext... Hierarchy... Expanded...F02F 1/26)

|  | F02F 1/04 |
· · | for air cooling

|  | F02F 1/06 |
· · · | Shape or arrangement of cooling fins; Finned cylinders

|  | F02F 1/08 |
· · · · | running-liner and cooling-part of cylinder being different parts or of different material

|  | F02F 1/10 |
· · | for liquid cooling

|  | F02F 1/12 |
· · · | Preventing corrosion of liquid-swept surfaces

|  | F02F 1/14 |
· · · | Cylinders with means for directing, guiding, or distributing liquid stream

|  | F02F 1/16 |
· · · | Cylinder liners of wet type

|  | F02F 1/18 |
· | Other cylinders

|  | F02F 1/20 |
· · | characterised by constructional features providing for lubrication

|  | F02F 1/22 |
· · | characterised by having ports in cylinder wall for scavenging or charging

|  | F02F 1/24 |
· | Cylinder heads

|  | F02F 1/26 |
· · | having cooling means

|  | F02F 1/28 |
· · · | for air cooling

|  | F02F 1/30 |
· · · · | Finned cylinder heads

|  | F02F 1/32 |
· · · · · | the cylinder heads being of overhead-valve type

|  | F02F 1/34 |
· · · · · | with means for directing or distributing cooling medium (Fulltext... Hierarchy... Expanded...F02F 1/32 takes precedence)

|  | F02F 1/36 |
· · · | for liquid cooling

|  | F02F 1/38 |
· · · · | the cylinder heads being of overhead-valve type

|  | F02F 1/40 |
· · · · | Cylinder heads with means for directing, guiding, or distributing liquid stream (Fulltext... Hierarchy... Expanded...F02F 1/38 takes precedence)

|  | F02F 1/42 |
· · | Shape or arrangement of intake or exhaust channels in cylinder heads

|  | F02F 3/00 |
Pistons (in general Fulltext... Hierarchy... Expanded...F16J)

|  | F02F 3/02 |
· | having means for accommodating or controlling heat expansion

|  | F02F 3/04 |
· · | having expansion-controlling inserts

|  | F02F 3/06 |
· · · | the inserts having bimetallic effect

|  | F02F 3/08 |
· · · | the inserts being ring-shaped

|  | F02F 3/10 |
· | having surface coverings (Fulltext... Hierarchy... Expanded...F02F 3/02 takes precedence)

|  | F02F 3/12 |
· · | on piston heads

|  | F02F 3/14 |
· · · | within combustion chambers

|  | F02F 3/16 |
· | having cooling means

|  | F02F 3/18 |
· · | the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston

|  | F02F 3/20 |
· · | the means being a fluid flowing through or along piston

|  | F02F 3/22 |
· · · | the fluid being liquid

|  | F02F 3/24 |
· | having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines

|  | F02F 3/26 |
· | having combustion chamber in piston head (the surface thereof being covered Fulltext... Hierarchy... Expanded...F02F 3/14)

|  | F02F 3/28 |
· | Other pistons with specially-shaped head

|  | F02F 5/00 |
Piston rings, e.g. associated with piston crown

|  | F02F 7/00 |
Casings, e.g. crankcases (engine casings in general Fulltext... Hierarchy... Expanded...F16M)

|  | F02F 9/00 |
Crankcase ventilating or breathing

|  | F02F 9/02 |
· | by means of additional source of positive or negative pressure

|  | F02F 9/04 |
· | having means for purifying air before leaving crankcase, e.g. removing oil

|  | F02F 9/06 |
· | specially adapted for submersible engines, e.g. of armoured cars

|  | F02F 11/00 |
Arrangements of sealings in combustion engines (piston rings Fulltext... Hierarchy... Expanded...F02F 5/00; sealings per se Fulltext... Hierarchy... Expanded...F16J)