F02F1/00	7	Cylinders; Cylinder heads&#160;	F02F1/00	F02F1/00		815
F02F1/002	8	{Integrally formed cylinders and cylinder heads}	F02F1/00	F02F1/00		561
F02F1/004	8	{Cylinder liners (F02F1/08, F02F1/16 take precedence)}	F02F1/00	F02F1/00		1204
F02F2001/006	8	{having a ring at the inside of a liner or cylinder for preventing the deposit of carbon oil particles, e.g. oil scrapers}	F02F1/00	F02F1/00		183
F02F2001/008	8	{Stress problems, especially related to thermal stress}	F02F1/00	F02F1/00		174
F02F1/02	8	having cooling means (cylinder heads F02F1/26)	F02F1/02	F02F1/02		82
F02F1/04	9	for air cooling	F02F1/04	F02F1/04		303
F02F1/045	10	{Attachment of cylinders to crankcase}	F02F1/04	F02F1/04		96
F02F1/06	10	Shape or arrangement of cooling fins; Finned cylinders	F02F1/06	F02F1/06		381
F02F1/065	11	{with means for directing or distributing cooling medium}	F02F1/06	F02F1/06		338
F02F1/08	11	running-liner and cooling-part of cylinder being different parts or of different material	F02F1/08	F02F1/08		268
F02F1/10	9	for liquid cooling	F02F1/10	F02F1/10		909
F02F1/102	10	{Attachment of cylinders to crankcase}	F02F1/10	F02F1/10		208
F02F2001/104	10	{using an open deck, i.e. the water jacket is open at the block top face}	F02F1/10	F02F1/10		320
F02F2001/106	10	{using a closed deck, i.e. the water jacket is not open at the block top face}	F02F1/10	F02F1/10		226
F02F1/108	10	{Siamese-type cylinders, i.e. cylinders cast together}	F02F1/10	F02F1/10		541
F02F1/12	10	Preventing corrosion of liquid-swept surfaces	F02F1/12	F02F1/12		66
F02F1/14	10	Cylinders with means for directing, guiding or distributing liquid stream	F02F1/14	F02F1/14		1182
F02F1/16	10	Cylinder liners of wet type	F02F1/16	F02F1/16		1122
F02F1/163	11	{the liner being midsupported}	F02F1/16	F02F1/16		125
F02F1/166	11	{Spacer decks}	F02F1/16	F02F1/16		74
F02F1/18	8	Other cylinders	F02F1/18	F02F1/18		825
F02F1/183	9	{Oval or square cylinders}	F02F1/18	F02F1/18		152
F02F1/186	9	{for use in engines with two or more pistons reciprocating within same cylinder}	F02F1/18	F02F1/18		163
F02F1/20	9	characterised by constructional features providing for lubrication	F02F1/20	F02F1/20		637
F02F1/22	9	characterised by having ports in cylinder wall for scavenging or charging	F02F1/22	F02F1/22		1400
F02F1/24	8	Cylinder heads	F02F1/24	F02F1/24		2283
F02F2001/241	9	{specially adapted to pent roof shape of the combustion chamber}	F02F1/24	F02F1/24		303
F02F1/242	9	{Arrangement of spark plugs or injectors}	F02F1/24	F02F1/24		1534
F02F1/243	9	{Cylinder heads and inlet or exhaust manifolds integrally cast together}	F02F1/24	F02F1/24		495
F02F2001/244	9	{Arrangement of valve stems in cylinder heads}	F02F1/24	F02F1/24		57
F02F2001/245	10	{the valve stems being orientated at an angle with the cylinder axis}	F02F1/24	F02F1/24		2131
F02F2001/246	11	{and orientated radially from the combustion chamber surface}	F02F1/24	F02F1/24		116
F02F2001/247	10	{the valve stems being orientated in parallel with the cylinder axis}	F02F1/24	F02F1/24		1769
F02F2001/248	9	{Methods for avoiding thermal stress-induced cracks in the zone between valve seat openings}	F02F1/24	F02F1/24		155
F02F2001/249	9	{with flame plate, e.g. insert in the cylinder head used as a thermal insulation between cylinder head and combustion chamber}	F02F1/24	F02F1/24		144
F02F1/26	9	having cooling means	F02F1/26	F02F1/26		83
F02F1/28	10	for air cooling	F02F1/28	F02F1/28		78
F02F1/30	11	Finned cylinder heads	F02F1/30	F02F1/30		144
F02F1/305	12	{the cylinder heads being of side valve type}	F02F1/30	F02F1/30		57
F02F1/32	12	the cylinder heads being of overhead valve type	F02F1/32	F02F1/32		325
F02F1/34	12	with means for directing or distributing cooling medium&#160;	F02F1/34	F02F1/34		140
F02F1/36	10	for liquid cooling	F02F1/36	F02F1/36		531
F02F1/365	11	{the cylinder heads being of side valve type}	F02F1/36	F02F1/36		311
F02F1/38	11	the cylinder heads being of overhead valve type	F02F1/38	F02F1/38		1000
F02F1/40	11	cylinder heads with means for directing, guiding, or distributing liquid stream&#160;	F02F1/40	F02F1/40		1424
F02F1/42	9	Shape or arrangement of intake or exhaust channels in cylinder heads	F02F1/42	F02F1/42		491
F02F2001/4207	10	{Arrangements with one conduit connected with two valves; Arrangements connecting one valve with two conduits}	F02F1/42	F02F1/42		23
F02F1/4214	10	{specially adapted for four or more valves per cylinder}	F02F1/42	F02F1/42		2395
F02F1/4221	11	{particularly for three or more inlet valves}	F02F1/42	F02F1/42		225
F02F1/4228	10	{Helically-shaped channels&#160; (imparting a rotation to the charge in the cylinder F02B31/00)}	F02F1/42	F02F1/42		238
F02F1/4235	10	{of intake channels}	F02F1/42	F02F1/42		587
F02F1/4242	11	{with a partition wall inside the channel}	F02F1/42	F02F1/42		139
F02F1/425	11	{with a separate deviation element inside the channel}	F02F1/42	F02F1/42		100
F02F1/4257	11	{with an intake liner}	F02F1/42	F02F1/42		33
F02F1/4264	10	{of exhaust channels}	F02F1/42	F02F1/42		571
F02F1/4271	11	{with an exhaust liner}	F02F1/42	F02F1/42		127
F02F2001/4278	11	{Exhaust collectors}	F02F1/42	F02F1/42		172
F02F1/4285	10	{of both intake and exhaust channel}	F02F1/42	F02F1/42		408
F02F1/4292	11	{with liners (F02F1/4257, F02F1/4271 take precedence)}	F02F1/42	F02F1/42		20
F02F3/00	7	Pistons&#160;	F02F3/00	F02F3/00		1862
F02F2003/0007	8	{Monolithic pistons; One piece constructions; Casting of pistons}	F02F3/00	F02F3/00		294
F02F3/0015	8	{Multi-part pistons}	F02F3/00	F02F3/00		532
F02F3/0023	9	{the parts being bolted or screwed together}	F02F3/00	F02F3/00		766
F02F3/003	9	{the parts being connected by casting, brazing, welding or clamping}	F02F3/00	F02F3/00		788
F02F2003/0038	10	{by brazing}	F02F3/00	F02F3/00		19
F02F2003/0046	10	{by crimping}	F02F3/00	F02F3/00		4
F02F2003/0053	10	{by soldering}	F02F3/00	F02F3/00		10
F02F2003/0061	10	{by welding}	F02F3/00	F02F3/00		295
F02F3/0069	9	{the crown and skirt being interconnected by the gudgeon pin}	F02F3/00	F02F3/00		253
F02F3/0076	8	{the inside of the pistons being provided with ribs or fins}	F02F3/00	F02F3/00		298
F02F3/0084	8	{the pistons being constructed from specific materials}	F02F3/00	F02F3/00		438
F02F3/0092	9	{the material being steel-plate}	F02F3/00	F02F3/00		80
F02F3/02	8	having means for accommodating or controlling heat expansion	F02F3/02	F02F3/02		338
F02F3/022	9	{the pistons having an oval circumference or non-cylindrical shaped skirts, e.g. oval (F02F3/025, F02F3/027 take precedence)}	F02F3/02	F02F3/02		142
F02F3/025	9	{having circumferentially slotted piston skirts, e.g. T-slots}	F02F3/02	F02F3/02		372
F02F3/027	9	{the skirt wall having cavities}	F02F3/02	F02F3/02		148
F02F3/04	9	having expansion-controlling inserts	F02F3/04	F02F3/04		158
F02F3/042	10	{the inserts consisting of reinforcements in the skirt interconnecting separate wall parts, e.g. rods or strips}	F02F3/04	F02F3/04		97
F02F3/045	10	{the inserts being located in the crown}	F02F3/04	F02F3/04		72
F02F3/047	10	{the inserts being located around the gudgeon pin bearings}	F02F3/04	F02F3/04		81
F02F3/06	10	the inserts having bimetallic effect	F02F3/06	F02F3/06		32
F02F3/08	10	the inserts being ring-shaped	F02F3/08	F02F3/08		191
F02F3/10	8	having surface coverings (F02F3/02 takes precedence)	F02F3/10	F02F3/10		511
F02F3/105	9	{the coverings forming a double skirt}	F02F3/10	F02F3/10		122
F02F3/12	9	on piston heads	F02F3/12	F02F3/12		490
F02F3/14	10	within combustion chambers	F02F3/14	F02F3/14		233
F02F3/16	8	having cooling means	F02F3/16	F02F3/16		218
F02F3/18	9	the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston	F02F3/18	F02F3/18		272
F02F3/20	9	the means being a fluid flowing through or along piston	F02F3/20	F02F3/20		158
F02F3/22	10	the fluid being liquid	F02F3/22	F02F3/22		1883
F02F3/225	11	{the liquid being directed into blind holes}	F02F3/22	F02F3/22		72
F02F3/24	8	having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines	F02F3/24	F02F3/24		357
F02F3/26	8	having combustion chamber in piston head (the surface thereof being covered F02F3/14)	F02F3/26	F02F3/26		1490
F02F3/28	8	Other pistons with specially-shaped head	F02F3/28	F02F3/28		931
F02F3/285	9	{the head being provided with an insert located in or on the combustion-gas-swept surface}	F02F3/28	F02F3/28		116
F02F5/00	7	Piston rings, e.g. associated with piston crown<br><br><u>NOTE</u><br><br>Details of piston rings or related details of the pistons, piston crowns or cylinders are classified in group F16J9/00.	F02F5/00	F02F5/00		437
F02F7/00	7	Casings, e.g. crankcases	F02F7/00	F02F7/00		825
F02F7/0002	8	{Cylinder arrangements}	F02F7/00	F02F7/00		87
F02F7/0004	9	{Crankcases of one-cylinder engines}	F02F7/00	F02F7/00		113
F02F7/0007	9	{Crankcases of engines with cylinders in line}	F02F7/00	F02F7/00		600
F02F7/0009	9	{Crankcases of opposed piston engines}	F02F7/00	F02F7/00		71
F02F7/0012	9	{Crankcases of V-engines}	F02F7/00	F02F7/00		378
F02F7/0014	9	{Crankcases of W-, deldic, or quadratic engines, or the like}	F02F7/00	F02F7/00		22
F02F7/0017	9	{Crankcases of radial engines}	F02F7/00	F02F7/00		47
F02F7/0019	9	{Cylinders and crankshaft not in one plane (deaxation)}	F02F7/00	F02F7/00		270
F02F7/0021	8	{Construction}	F02F7/00	F02F7/00		434
F02F7/0024	9	{Casings for larger engines}	F02F7/00	F02F7/00		60
F02F7/0026	10	{Casings for horizontal engines}	F02F7/00	F02F7/00		16
F02F7/0029	9	{Space-frames}	F02F7/00	F02F7/00		31
F02F7/0031	9	{Construction kit principle (modular engines)}	F02F7/00	F02F7/00		119
F02F7/0034	9	{Built from sheet material and welded casings}	F02F7/00	F02F7/00		249
F02F7/0036	9	{Casings for two-stroke engines with scavenging conduits}	F02F7/00	F02F7/00		67
F02F7/0039	9	{Casings for small engines, especially with crankcase pumps}	F02F7/00	F02F7/00		55
F02F2007/0041	9	{Fixing Bolts}	F02F7/00	F02F7/00		165
F02F7/0043	8	{Arrangements of mechanical drive elements}	F02F7/00	F02F7/00		179
F02F7/0046	9	{Shape of casings adapted to facilitate fitting or dismantling of engine parts}	F02F7/00	F02F7/00		386
F02F7/0048	9	{Tunnel-type frames}	F02F7/00	F02F7/00		42
F02F7/0051	9	{Crankcase pump engines}	F02F7/00	F02F7/00		30
F02F7/0053	9	{Crankshaft bearings fitted in the crankcase}	F02F7/00	F02F7/00		845
F02F2007/0056	10	{using bearing beams, i.e. bearings interconnected by a beam or multiple beams}	F02F7/00	F02F7/00		104
F02F7/0058	9	{Longitudinally or transversely separable crankcases}	F02F7/00	F02F7/00		69
F02F7/006	8	{Camshaft or pushrod housings}	F02F7/00	F02F7/00		2249
F02F2007/0063	9	{Head bolts; Arrangements of cylinder head bolts}	F02F7/00	F02F7/00		456
F02F7/0065	8	{Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety}	F02F7/00	F02F7/00		452
F02F7/0068	9	{Adaptations for other accessories}	F02F7/00	F02F7/00		356
F02F7/007	9	{Adaptations for cooling}	F02F7/00	F02F7/00		335
F02F7/0073	9	{Adaptations for fitting the engine, e.g. front-plates or bell-housings}	F02F7/00	F02F7/00		401
F02F2007/0075	10	{Front covers}	F02F7/00	F02F7/00		77
F02F2007/0078	10	{Covers for belt transmissions}	F02F7/00	F02F7/00		79
F02F7/008	9	{Sound insulation}	F02F7/00	F02F7/00		480
F02F7/0082	8	{Mounting of engine casings}	F02F7/00	F02F7/00		142
F02F7/0085	8	{Materials for constructing engines or their parts}	F02F7/00	F02F7/00		528
F02F7/0087	9	{Ceramic materials}	F02F7/00	F02F7/00		625
F02F2007/009	9	{Hypereutectic aluminum, e.g. aluminum alloys with high SI content}	F02F7/00	F02F7/00		97
F02F2007/0092	9	{Transparent materials}	F02F7/00	F02F7/00		138
F02F7/0095	8	{Constructing engine casings (welded casings F02F7/0034)}	F02F7/00	F02F7/00		124
F02F2007/0097	8	{for large diesel engines}	F02F7/00	F02F7/00		391
F02F11/00	7	Arrangements of sealings in combustion engines {(piston rings or ring sealings of similar construction F16J9/00)}	F02F11/00	F02F11/00		998
F02F11/002	8	{involving cylinder heads}	F02F11/00	F02F11/00		1583
F02F11/005	8	{involving cylinder liners}	F02F11/00	F02F11/00		219
F02F11/007	8	{involving rotary applications}	F02F11/00	F02F11/00		213
F02F2200/00	7	Manufacturing	CPCONLY	F02F2200/00		237
F02F2200/02	8	Riveting	CPCONLY	F02F2200/02		7
F02F2200/04	8	Forging of engine parts	CPCONLY	F02F2200/04		541
F02F2200/06	8	Casting	CPCONLY	F02F2200/06		909
F02F2200/08	9	using a lost model, e.g. foam casting	CPCONLY	F02F2200/08		53
F02F2200/11	8	using wrought materials, e.g. wrought steels	CPCONLY	F02F2200/11		5
