WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

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

F02F 1/00 Cylinders; Cylinder heads (in general F16J)

F02F 1/002 ・{Integrally formed cylinders and cylinder heads}

F02F 1/004 ・{Cylinder liners (F02F 1/08, F02F 1/16 take precedence)}

F02F 1/02 ・having cooling means (cylinder heads F02F 1/26)

F02F 1/04 ・・for air cooling

F02F 1/045 ・・・[N. Attachment of cylinders to crankcase]

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

F02F 1/065 ・・・・{with means for directing or distributing cooling medium}

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

F02F 1/10 ・・for liquid cooling

F02F 1/102 ・・・{Attachment of cylinders to crankcase}

F02F 1/108 ・・・{Siamese-type cylinders, i.e. cylinders cast together}

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 1/163 ・・・・{the liner being midsupported}

F02F 1/166 ・・・・{Spacer decks}

F02F 1/18 ・Other cylinders

F02F 1/183 ・・{Oval or square cylinders}

F02F 1/186 ・・{for use in engines with two or more pistons reciprocating within same cylinder (such engines per se F02B 75/28)}

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 1/242 ・・{Arrangement of spark plugs or injectors}

F02F 1/243 ・・{Cylinder heads and inlet or exhaust manifolds integrally cast together}

F02F 1/26 ・・having cooling means

F02F 1/28 ・・・for air cooling

F02F 1/30 ・・・・Finned cylinder heads

F02F 1/305 ・・・・・{the cylinder heads being of side valve type}

F02F 1/32 ・・・・・the cylinder heads being of overhead valve type

F02F 1/34 ・・・・・with means for directing or distributing cooling medium (F02F 1/32 takes precedence)

F02F 1/36 ・・・for liquid cooling

F02F 1/365 ・・・・{the cylinder heads being of side valve type}

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 (F02F 1/38 takes precedence)

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

F02F 1/4214 ・・・{specially adapted for four or more valves per cylinder}

F02F 1/4221 ・・・・{particularly for three or more inlet valves (mechanisms for driving such valves F01L 1/265)}

F02F 1/4228 ・・・{Helically-shaped channels}(F02B 31/00 takes precedence)]

F02F 1/4235 ・・・{of intake channels}

F02F 1/4242 ・・・・{with a partition wall inside the channel}

F02F 1/425 ・・・・{with a separate deviation element inside the channel}

F02F 1/4257 ・・・・{with an intake liner}

F02F 1/4264 ・・・{of exhaust channels}

F02F 1/4271 ・・・・{with an exhaust liner}

F02F 1/4285 ・・・{of both intake and exhaust channel}

F02F 1/4292 ・・・・{with liners (F02F 1/4257, F02F 1/4271 take precedence)}

F02F 3/00 Pistons (in general F16J)

F02F 3/0015 ・{Multi-part pistons}

F02F 3/0023 ・・{the parts being bolted or screwed together}

F02F 3/003 ・・{the parts being connected by casting, brazing, welding or clamping}

F02F 3/0069 ・・{the crown and skirt being interconnected by the gudgeon pin}

F02F 3/0076 ・{the inside of the pistons being provided with ribs or fins}

F02F 3/0084 ・{the pistons being constructed from specific materials}

F02F 3/0092 ・・{the material being steel-plate}

F02F 3/02 ・having means for accomodating or controlling heat expansion

F02F 3/022 ・・{the pistons having an oval circumference or non-cylindrical shaped skirts, e.g. oval (F02F 3/025, F02F 3/027 take precedence)}

F02F 3/025 ・・{having circumferentially slotted piston skirts, e.g. T-slots}

F02F 3/027 ・・{the skirt wall having cavities}

F02F 3/04 ・・having expansion-controlling inserts

F02F 3/042 ・・・{the inserts consisting of reinforcements in the skirt interconnecting separate wall parts, e.g. rods or strips}

F02F 3/045 ・・・{the inserts being located in the crown}

F02F 3/047 ・・・{the inserts being located around the gudgeon pin bearings}

F02F 3/06 ・・・the inserts having bimetallic effect

F02F 3/08 ・・・the inserts being ring-shaped

F02F 3/10 ・having surface coverings (F02F 3/02 takes precedence)

F02F 3/105 ・・{the coverings forming a double skirt}

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 3/225 ・・・・{the liquid being directed into blind holes}

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 F02F 3/14)

F02F 3/28 ・Other pistons with specially-shaped head

F02F 3/285 ・・{the head being provided with an insert located in or on the combustion-gas-swept surface}

F02F 5/00 Piston rings, e.g. associated with piston crown {not used see F16J 9/00}

F02F 7/00 Casings, e.g. crankcases (engine casings in general F16M){or frames}

F02F 7/0002 ・{Cylinder arrangements}

F02F 7/0004 ・・{Crankcases of one-cylinder engines}

F02F 7/0007 ・・{Crankcases of engines with cylinders in line}

F02F 7/0009 ・・{Crankcases of opposed piston engines}

F02F 7/0012 ・・{Crankcases of V-engines}

F02F 7/0014 ・・{Crankcases of W-, deldic, or quadratic engines, or the like}

F02F 7/0017 ・・{Crankcases of radial engines}

F02F 7/0019 ・・{Cylinders and crankshaft not in one plane (deaxation)}

F02F 7/0021 ・{Construction}

F02F 7/0024 ・・{Casings for larger engines}

F02F 7/0026 ・・・{Casings for horizontal engines}

F02F 7/0029 ・・{Space-frames}

F02F 7/0031 ・・{Construction kit principle (modular engines)}

F02F 7/0034 ・・{Built from sheet material and welded casings}

F02F 7/0036 ・・{Casings for two-stroke engines with scavenging conduits}

F02F 7/0039 ・・{Casings for small engines, especially with crankcase pumps}

F02F 7/0043 ・{Arrangements of mechanical drive elements}

F02F 7/0046 ・・{Shape of casings adapted to facilitate fitting or dismantling of engine parts}

F02F 7/0048 ・・{Tunnel-type frames}

F02F 7/0051 ・・{Crankcase pump engines}

F02F 7/0053 ・・{Crankshaft bearings fitted in the crankcase}

F02F 7/0058 ・・{Longitudially or tranversely separable crankcases}

F02F 7/006 ・{Camshaft or pushrod housings (oil sumps F01M 11/0004)}

F02F 7/0065 ・{Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety}

F02F 7/0068 ・・{Adaptations for other accessories}

F02F 7/007 ・・{Adaptations for cooling}

F02F 7/0073 ・・{Adaptations for fitting the engine, e.g. front-plates or bell-housings}

F02F 7/008 ・・{Sound insulation (see also F02B 77/13)}

F02F 7/0082 ・{Mounting of engine casings}

F02F 7/0085 ・{Materials for constructing engines or their parts}

F02F 7/0087 ・・{Ceramic materials}

F02F 7/0095 ・{Constructing engine casings (welded casings F02F 7/0034)}

F02F 11/00 Arrangements of sealings in combustion engines (piston rings F02F 5/00{not used, see F16J 9/00}; sealings per se F16J)

F02F 11/002 ・{involving cylinder heads}

F02F 11/005 ・{involving cylinder liners}

F02F 11/007 ・{involving rotary applications}

F02F 2001/00 Cylinders; Cylinder heads (in general F16J)

F02F 2001/006 ・having a ring at the inside of a liner or cylinder for preventing the deposit of carbon oil particles, e.g. oil scrapers

F02F 2001/008 ・Stress problems, especially related to thermal stress

F02F 2001/02 ・having cooling means (cylinder heads F02F 1/26)

F02F 2001/10 ・・for liquid cooling

F02F 2001/104 ・・・using an open deck, i.e. the water jacket is open at the block top face

F02F 2001/106 ・・・using a closed deck, i.e. the water jacket is not open at the block top face

F02F 2001/24 ・Cylinder heads

F02F 2001/241 ・・specially adapted to pent roof shape of the combustion chamber

F02F 2001/244 ・・Arrangement of valve stems in cylinder heads

F02F 2001/245 ・・・the valve stems being orientated at an angle with the cylinder axis

F02F 2001/246 ・・・・and orientated radially from the combustion chamber surface

F02F 2001/247 ・・・the valve stems being orientated in parallel with the cylinder axis

F02F 2001/248 ・・Methods for avoiding thermal stress-induced cracks in the zone between valve seat openings

F02F 2001/249 ・・with flame plate, e.g. insert in the cylinder head used as a thermal insulation between cylinder head and combustion chamber

F02F 2001/42 ・・Shape or arrangement of intake or exhaust channels in cylinder heads

F02F 2001/4207 ・・・Arrangements with one conduit connected with two valves; Arrangements connecting one valve with two conduits

F02F 2001/4264 ・・・{of exhaust channels}

F02F 2001/4278 ・・・・Exhaust collectors

F02F 2003/00 Pistons (in general F16J)

F02F 2003/0007 ・Monolithic pistons; One piece constructions; Casting of pistons

F02F 2003/0015 ・{Multi-part pistons}

F02F 2003/003 ・・{the parts being connected by casting, brazing, welding or clamping}

F02F 2003/0038 ・・・by brazing

F02F 2003/0046 ・・・by crimping

F02F 2003/0053 ・・・by soldering

F02F 2003/0061 ・・・by welding

F02F 2007/00 Casings, e.g. crankcases (engine casings in general F16M){or frames}

F02F 2007/0021 ・{Construction}

F02F 2007/0041 ・・Fixing Bolts

F02F 2007/0043 ・{Arrangements of mechanical drive elements}

F02F 2007/0053 ・・{Crankshaft bearings fitted in the crankcase}

F02F 2007/0056 ・・・using bearing beams, i.e. bearings interconnected by a beam or multiple beams

F02F 2007/006 ・{Camshaft or pushrod housings (oil sumps F01M 11/0004)}

F02F 2007/0063 ・・Head bolts; Arrangements of cylinder head bolts

F02F 2007/0065 ・{Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety}

F02F 2007/0073 ・・{Adaptations for fitting the engine, e.g. front-plates or bell-housings}

F02F 2007/0075 ・・・Front covers

F02F 2007/0078 ・・・Covers for belt transmissions

F02F 2007/0085 ・{Materials for constructing engines or their parts}

F02F 2007/009 ・・Hypereutectic aluminum, e.g. aluminum alloys with high SI content

F02F 2007/0092 ・・Transparent materials

F02F 2007/0097 ・for large diesel engines

F02F 2200/00 Manufacturing

F02F 2200/02 ・Riveting

F02F 2200/04 ・Forging of engine parts

F02F 2200/06 ・Casting (casting of pistons F02F 2003/0007)

F02F 2200/08 ・・using a lost model, e.g. foam casting

F02F 2200/11 ・using wrought materials, e.g. wrought steels F02F 2547/00