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• Ohv
  ...er head]] containing two [[overhead camshaft]]s, one above each of the two valves]] ...rnal combustion engine]] is one in which the entry and exit [[poppet valve|valves]] and ports are contained in the [[cylinder head]].
  1 KB (146 words) - 09:59, 27 September 2009
• Cylinder head
  ...g|thumb|200px|The cylinder head from a [[GMC]] [[van]]. The [[poppet valve|valves]] and part of the exhaust [[manifold (automotive engineering)|manifold]] ar ...coming air to negotiate a convoluted path, which limits the ability of the engine to perform at higher [[Revolutions per minute|rpm]], leading to the adoptio
  3 KB (415 words) - 23:56, 20 September 2009
• DOHC
  ...hows two overhead camshafts—one above each of the two [[poppet valve|valves]].]] ...valves. In engines with more than one [[cylinder bank]], such as the [[V engine]], this designation means two camshafts ''per bank''.
  3 KB (410 words) - 14:33, 24 September 2009
• Flathead engine
  [[image:flathead.jpg|thumb|right|Ford flathead V8 engine, modified for power, depicted on cover of Hot Rod magazine. The "flat head" ...as in an overhead valve or [[OHV]] engine. The design was common on early engine designs, but has since fallen from use.
  3 KB (479 words) - 22:45, 8 September 2009
• Ohc
  ...inder head]]s, above the combustion chambers, and drive the [[poppet valve|valves]] or [[lifter]]s directly instead of using [[pushrod]]s. ...]] to improve efficiency and power. OHC also inherently allows for greater engine speeds over comparable cam-in-block designs.
  4 KB (549 words) - 18:19, 17 July 2009
• Valvetrain
  [[Image:Engine movingparts.jpg|right|250px|thumb|'''Diagram of an engine''']] ...d to described the mechanisms and parts which control the operation of the valves.
  3 KB (501 words) - 00:38, 3 December 2009
• Camshaft
  ...|right|250px|[[Poppet valve|Valve]] timing [[gear]]s on a [[Ford Taunus V4 engine]] — the small gear is on the [[crankshaft]], the larger gear is on th ...or ''[[cam]]s'' protruding from it, one for each valve. The cams force the valves open by pressing on the valve, or on some intermediate mechanism, as they r
  4 KB (658 words) - 19:44, 31 March 2009
• Lancia V4 engine
  [[Lancia]] pioneered the [[V engine]] design, producing the first [[V6]] as well as the first [[V4]]s. Several The Lambda engine was updated for the [[Lancia Artena|Artena]]. Bore was set at 82.55 m
  4 KB (612 words) - 16:37, 13 June 2009
• Overhead cam
  ...hows two overhead camshafts—one above each of the two [[poppet valve|valves]].]] ...r head]]s, above the [[combustion chamber]]s, and drive the [[poppet valve|valves]] or [[lifter]]s in a more direct manner, when compared with [[Overhead val
  6 KB (952 words) - 17:33, 7 August 2009
• Taura
  ...valve distribution and a motorcycle with a 350 cc engine with distribution valves in the head. The same year they constructed an interesting motor tricycle f
  1 KB (161 words) - 13:21, 26 June 2009
• Bugatti Type 18
  ...ve|3 valves per cylinder]] and a [[single overhead cam]]shaft. This large engine had a 100 mm bore and very long 160 mm stroke, so it could only r
  1 KB (153 words) - 11:18, 14 June 2009
• Bugatti Type 50
  ...verhead cam]]shaft. Power was reported at 140 hp (104 kW). The engine was [[undersquare]] like most Bugatti designs with a 81 mm bore and 13 ...maller 5.0 L (4972 cc/303 in³) version of the engine. This engine had squarer dimensions, however, at 86 by 107 mm, and power output was
  2 KB (335 words) - 11:17, 14 June 2009
• Fully Integrated Robotised Engine
  ...Robogate") to reduce costs. The FIRE series replaced the old Fiat [[OHV]] engine in the mid-[[1980s]]. ...ersions from 999 cc to 1372 cc with both 8- and [[multi-valve|16-valves]].
  831 bytes (122 words) - 08:13, 8 October 2009
• Pushrod
  [[Image:pushrod engine.jpg|thumb|Picture of a [[V8]] [[engine block]] (with [[intake manifold]] removed), showing the camshaft, pushrods, ...uate the [[poppet valve|valves]]. Lifters or ''[[tappet]]s'' reside in the engine block between the camshaft and pushrods. The later [[overhead cam|overhead
  8 KB (1,302 words) - 08:11, 14 June 2009
• Patriarca
  ...ch applies to the frame of any bike. Adopting a mixing system with quite [[valves]] and original lights, ignition took place by means of [[coils]] and [[batt ...n in 1951. The engine was a single cylinder four-stroke vertical of 248 cc engine with a power of about 14 HP. It was an interesting machine, but was never p
  2 KB (244 words) - 07:54, 26 June 2009
• Overhead camshaft
  ...inder head]]s, above the combustion chambers, and drive the [[poppet valve|valves]] or [[lifter]]s directly instead of using [[pushrod]]s. This arrangement i ...]] to improve efficiency and power. OHC also inherently allows for greater engine speeds over comparable cam-in-block designs.
  5 KB (694 words) - 08:50, 8 October 2009
• Focesi
  .... For the 1954 exhibition in [[Milan]] they introduced a two-stroke 160 cc engine, with a swinging arms front fork called the ''Earles''. All the activity of
  1 KB (163 words) - 22:09, 27 July 2009
• Long block
  '''Long block''' is an [[automotive]] term describing an [[engine]] sub-assembly consisting of the following: ...ation. Complete cylinder heads include new or reconditioned [[poppet valve|valves]], valve springs, valve guides (if applicable), valve seats (if applicable)
  876 bytes (131 words) - 08:51, 8 October 2009
• Alfa Romeo Twin Cam engine
  ...ackground:#333333; color:#fff; border-bottom:1px solid #999;" |[[Image:GTV engine.jpg|250px]] ! colspan=2 |'''Alfa Romeo Twin Cam engine'''
  5 KB (646 words) - 14:34, 15 June 2009
• Poppet valve
  ...alve|Presta]] and [[Schrader valve]]s used on tires are examples of poppet valves. The Presta valve has no spring and relies on a pressure differential for o Poppet valves are used in many industrial process from controlling the flow of rocket fue
  5 KB (840 words) - 08:50, 8 October 2009
• Crossflow cylinder head
  ...ves]]. The main reason for a crossflow's performance is that the ports and valves can be larger and its physical separation of the hot exhaust manifold keeps ...Alfa Romeo]] [[4-cylinder]]. Used for decades, the basic design of this [[engine]] had not changed; only the capacity/liter size and with the changes in fue
  2 KB (272 words) - 23:31, 27 August 2010
• Desmodromic valve
  ...system, rather than relying on the more conventional springs to close the valves. This is in the context of [[internal combustion engine]]s. The valves in question are the ones that allow air into the cylinder and (usually diff
  3 KB (485 words) - 23:55, 15 November 2009
• Exhaust brake
  ...throttle valve on the intake manifold, there is no intake vacuum when the engine is not fueling. The intake vacuum creates the slowing effect felt in [[gaso ...pressure which in turn improves the braking performance across a range of engine speeds.
  3 KB (393 words) - 22:25, 22 September 2009
• Pushrod engine
  ...design which places the camshafts within the cylinder head and drives the valves directly or through short rocker arms, called fingers. ...displacement]]. In [[1949]], [[Oldsmobile]] introduced the [[Oldsmobile V8 engine|Rocket V8]]. It was the first high-compression cam-in-block design, and is
  10 KB (1,635 words) - 08:54, 4 August 2009
• Piola
  ...of two-cylinder [[motorcycles]] with a 620 cc engine contrasted with side valves and a chain driven gearbox.
  654 bytes (89 words) - 08:01, 26 June 2009
• Alfa Romeo V6 engine
  ! colspan=2 |'''Alfa Romeo V6 engine''' |Class || [[SOHC|S]]/[[DOHC]] 2/[[multi-valve|4-valve]] [[V6 engine|V6]]
  5 KB (604 words) - 19:25, 2 March 2009
• Ladetto
  ...acteristics. At the end of 1927, they also built a 250 cc engine with side valves and a three-speed [[transmission]]. In 1928 they are also presented models ...elescopic shock absorber and helical springs. The engine was a 175 cc with valves in the head and a gearbox with three speeds.
  2 KB (360 words) - 09:17, 1 November 2010
• Conti
  ...o speed transmission with a maximum speed of 70-75 [[km/h]]. With the same engine in 1927 built a "easy" bike called the ''Balloon'' and in 1928 another mode ...versions, a Touring and an Extra Luxury. The bikes used the Della Ferrera engine with [[four-stroke]] 175 cc [[valve]] head, Bosch magneto ignition (as tour
  2 KB (291 words) - 08:30, 20 August 2009
• Ferrari Colombo engine
  |[[Image:Ferrari212 motor.JPG|250px|thumb|[[Ferrari 212]] 2.6 L engine]] ...250 Testa Rossa engine.jpg|right|thumb|250px|Colombo Type 125 Testa Rossa engine in a 1958 [[Ferrari TR|250TR]]]]
  7 KB (1,080 words) - 23:07, 7 August 2009
• Bugatti Type 49
  ...box) with the [[Bugatti Type 13#Type 13 Brescia|Type 13 "Brescia"]]. This engine went on to be used in the cut-cost [[Bugatti Type 35#Type 35A|Type 35A]] an ...n [[1926]] and [[1927]]. It used the 2 L (1991 cc/121 in³) engine from the [[Bugatti Type 35#Type 35A|Type 35A "Tecla"]]. The supercharger f
  4 KB (534 words) - 21:27, 31 July 2009
• SAR
  ...alves. From 1924 there was a 346 cc single cylinder with an [[oil-cooled]] engine by ''Bradshaw''.
  850 bytes (114 words) - 15:36, 19 April 2010
• Bugatti Type 30
  ...box) with the [[Bugatti Type 13#Type 13 Brescia|Type 13 "Brescia"]]. This engine went on to be used in the cut-cost [[Bugatti Type 35#Type 35A|Type 35A]] an ...n [[1926]] and [[1927]]. It used the 2 L (1991 cc/121 in³) engine from the [[Bugatti Type 35#Type 35A|Type 35A "Tecla"]]. The supercharger f
  4 KB (552 words) - 11:10, 14 June 2009
• Fiat 519
  |Engine || [[straight-6]], 4766 cc, **519A had taller radiator and detail changes to engine.-Larger waterpump, Rocker oil feed to centre pedestal and rear"anti-rolling
  3 KB (356 words) - 16:06, 10 March 2009
• Multi-valve
  ...[cylinder head]] of four [[Poppet valve|valve]] engine.<br />( [[Nissan VQ engine]] )]] ...(or '''multivalve''') when each cylinder has more than two [[poppet valve|valves]].
  5 KB (662 words) - 07:50, 7 December 2010
• Blowoff valve
  ...nes, its purpose is to prevent [[compressor surge]] and reduce wear on the engine. ...n the United States, Australia and Europe cars featuring unmuffled blowoff valves are illegal for street use.
  5 KB (742 words) - 09:19, 7 October 2009
• Ferrari Lampredi engine
  [[Image:1954 Ferrari 375 Plus engine.jpg|right|thumb|300px|'''Lampredi V12 in a 1954 [[Ferrari 375|Ferrari 375 P ...place of the fours and sixes and evolution of the older [[Ferrari Colombo engine|Colombo V12]] continuing as the company's preeminent V12.
  8 KB (1,137 words) - 16:43, 13 June 2009
• Quota 1100 ES
  |Engine || 90° V-twin, air cooled |Valves and Operation || 2 overhead valves with light alloy push-rods
  2 KB (275 words) - 22:58, 27 February 2009
• Naturally-aspirated engine
  ...NA" - [[aspiration]] meaning breathing) refers to an [[internal combustion engine]] (normally [[petrol]] or [[diesel]] powered) that is neither [[turbocharge ...t]] can help with this but generally only works at a narrow range of [[RPM|engine speeds]] and hence is most useful in very high performance cars, [[aircraft
  3 KB (403 words) - 10:27, 8 October 2009
• Ducati 851
  ...they were only able to reduce the included valve angle of the desmodromic engine to 40°, while less than 30° was possible with valve springs. Ducati stuck ...subsequent 851 road bike had stronger [[crankcase]]s, while the heads and valves remained the same; designed to fit above the 88 mm bore of a 748 cc version
  3 KB (386 words) - 11:33, 14 June 2009
• Magliano
  ...]] had a vertical single four-stroke, 74.3 cc engine with two distribution valves and driven by two inclined camshafts in the head. The three speeds changed
  1 KB (158 words) - 19:44, 15 June 2009
• Alfa Romeo Twin Spark engine
  ! colspan=2 |'''Alfa Romeo TwinSpark engine''' |Predecessor:||[[Alfa Romeo Twin Cam engine|Alfa Romeo Twin Cam]]
  6 KB (883 words) - 22:36, 14 June 2009
• Cardani
  ...967, a race bike with a 498 cc three-cylinder four-stroke engine with four valves per cylinder with this brand name. The machine was developed for Jack Findl ...hine was never used. Finlay Fontana built on a Suzuki TR 500 frame with an engine that used the name '''Jada''', combining the names of '''Ja'''ck Findlay an
  1 KB (180 words) - 07:03, 4 December 2010
• G.R.
  ...springs. In 1926, the Revelli is put into production with a 500 cc ''JAP'' engine, with distribution overhead valve and a three-speed gearbox.
  1 KB (148 words) - 23:04, 2 October 2009
• Altea
  ...utside and exchange in bulk three gears, which followed a 200 cc bike with valves in the head, [[distribution |(mechanical)distribution]] to auctions and bil The same engine was also used to power a [[motocarro|motofurgoncino]] traded in [[1940]].
  1 KB (170 words) - 21:55, 17 August 2009
• Four-stroke
  ...otary combustion engine]] rather than the much more usual, [[reciprocating engine]] of the four-stroke cycle. [[image:4-Stroke-Engine.gif|framed|right|four-stroke cycle]]
  11 KB (1,765 words) - 11:04, 10 November 2005
• Short block
  '''Short block''' is an [[automotive]] term describing an [[engine]] sub-assembly consisting of the following: ...valve and flathead engines, the [[camshaft]] may also be installed. If the engine uses timing gears, they may be installed and timed.
  2 KB (278 words) - 22:48, 11 June 2009
• Lamborghini V10
  ...tion of cylinders. It was chosen to keep the [[center of gravity]] of the engine low. For the same reason, a [[dry-sump]] lubrication system was also used. There is speculation that this engine will also be fitted to a planned [[Audi RSR]] [[supercar]] based on the [[A
  2 KB (284 words) - 11:38, 8 October 2009
• Four-stroke cycle
  ...otary combustion engine]] rather than the much more usual, [[reciprocating engine]] of the four-stroke cycle. [[image:4-Stroke-Engine.gif|framed|right|four-stroke cycle]]
  11 KB (1,775 words) - 09:48, 2 August 2009

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