Search results

• 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
• DOHC
  ...hows two overhead camshafts—one above each of the two [[poppet valve|valves]].]] ...[cylinder]]s, and where there are separate camshafts for inlet and exhaust valves. In engines with more than one [[cylinder bank]], such as the [[V engine]]
  3 KB (410 words) - 14:33, 24 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. ...engines today employ [[Variable Valve Timing]] and [[multi-valve|multiple valves]] to improve efficiency and power. OHC also inherently allows for greater e
  4 KB (549 words) - 18:19, 17 July 2009
• Valvetrain
  ...d to described the mechanisms and parts which control the operation of the valves. ...s slightly in layout but still performs the task of opening and closes the valves at the time necessary for proper operation of the engine. These layouts are
  3 KB (501 words) - 00:38, 3 December 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 ...engineering)|manifold]], for [[exhaust]] gases to travel from the exhaust valves to the exhaust manifold, and for [[antifreeze (coolant)]] to cool the head
  3 KB (415 words) - 23:56, 20 September 2009
• Camshaft
  ...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 ...nd the rotation of the [[crankshaft]] is of critical importance. Since the valves control the flow of fuel intake and exhaust, they must be opened and closed
  4 KB (658 words) - 19:44, 31 March 2009
• Flathead engine
  ...'' refers to an [[internal combustion engine]] that has the [[poppet valve|valves]] placed in the engine block beside the [[piston]], instead of in the [[cyl ...valve-in-block" engine. It may also lead to slighly easier cooling, as the valves and operating rods are out of the way of the cylinder, making a cooling jac
  3 KB (479 words) - 22:45, 8 September 2009
• Ducati 888
  ...ams both opening and, as opposed to springs, closing the valves--to a four valves per cylinder layout.
  1 KB (152 words) - 08:59, 8 October 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
• 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
• 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 ...engines today employ [[Variable Valve Timing]] and [[multi-valve|multiple valves]] to improve efficiency and power. OHC also inherently allows for greater e
  5 KB (694 words) - 08:50, 8 October 2009
• Ducati 888 SUPERBIKE
  ...ams both opening and, as opposed to springs, closing the valves--to a four valves per cylinder layout.
  1 KB (160 words) - 20:53, 4 November 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
• Blowoff valve
  ...n the United States, Australia and Europe cars featuring unmuffled blowoff valves are illegal for street use. == Purpose of Relief and Blow Off Valves ==
  5 KB (742 words) - 09:19, 7 October 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
• 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
• Pushrod
  ...rm|rocker arms]] above the [[cylinder head]] to actuate the [[poppet valve|valves]]. Lifters or ''[[tappet]]s'' reside in the engine block between the camsha ...combustion engine]] is one in which the intake and exhaust [[poppet valve|valves]] and ports are contained in the [[cylinder head]].
  8 KB (1,302 words) - 08:11, 14 June 2009
• Bugatti Type 18
  ...p;L (5027 cc/306 in³) [[straight-4]] engine with [[multi-valve|3 valves per cylinder]] and a [[single overhead cam]]shaft. This large engine had a
  1 KB (153 words) - 11:18, 14 June 2009
• Pushrod engine
  ...design which places the camshafts within the cylinder head and drives the valves directly or through short rocker arms, called fingers. ...s to the cam-in-block valvetrain configuration in which the [[poppet valve|valves]] are placed in the engine block beside the [[pistons]]. The design was com
  10 KB (1,635 words) - 08:54, 4 August 2009
• Desmodromica
  ...stribution desmodromica requires a special mechanism for the recall of the valves comprises a cam further (the negative of the cam drive) and a rocker that r
  1 KB (195 words) - 14:42, 17 June 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
  2 KB (272 words) - 23:31, 27 August 2010
• Quota 1100 ES
  |Valves and Operation || 2 overhead valves with light alloy push-rods
  2 KB (275 words) - 22:58, 27 February 2009
• Ducati 851
  ...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 *Valves per cylinder: 4
  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
• Moto Aquila
  ...1934 they started to use the ''Python Rudge'' engines that had four radial valves and avaliable in 250 cc and 350 cc. ...r production included models with engines of 175 cc, four-stroke, with the valves in the head, with a purely sporting characteristic. They then also built [[
  2 KB (283 words) - 06:53, 3 October 2016
• Lancia V4 engine
  ...one camshaft operating all intake valves and another operating all exhaust valves.
  4 KB (612 words) - 16:37, 13 June 2009
• Focesi
  ...nge grew with the addition of the ''Glory 100'', with a 98.125 cc with the valves in the head engine and four-speed transmission, which was avaliable in a [[
  1 KB (163 words) - 22:09, 27 July 2009
• Thunder
  ...motorcycles]] that built a very modern 127 cc, parallel with twin overhead valves, for that time.
  627 bytes (88 words) - 13:08, 20 April 2010
• 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
  1 KB (170 words) - 21:55, 17 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
• Fiat 519
  *Cylinder: 12 valves total 2 valves per cylinder
  3 KB (356 words) - 16:06, 10 March 2009
• GRG
  ...6 cc engines two cylinder and a 173 cc single [[cylinder]] with overhead [[valves]] and using [[Della Ferrera]] linkage.
  763 bytes (99 words) - 09:47, 16 April 2010
• Geddes
  ...inello''. The car had a high performance 4-[[cylinder]] [[engine]] with 12 valves and a 1100 cc capacity but it never went into mass production.
  848 bytes (115 words) - 00:14, 22 February 2011
• Garlaschelli
  ...s and later a 173 cc OHV two and four stroke engine, with the distribution valves in the head.
  761 bytes (102 words) - 11:59, 16 April 2010
• DC Scoiattolo
  This motorcycle had a 4-stroke engine with the camshafts and valves soaking in an oil bath. The gearbox was built in the block in bulk and shif
  797 bytes (118 words) - 01:48, 5 August 2011
• Alfa Romeo Twin Cam engine
  * Camshafts directly actuate valves via bucket tappets * Two inclined valves per cylinder with near central located [[spark plug]]
  5 KB (646 words) - 14:34, 15 June 2009
• Colombo motorcycle
  ...cylinder engine. A year later they had a finished bike. The machine had no valves, but a spinning drive for the mixture and the exhaust was loaded and unload
  791 bytes (115 words) - 00:11, 23 October 2010
• Fully Integrated Robotised Engine
  ...ersions from 999 cc to 1372 cc with both 8- and [[multi-valve|16-valves]].
  831 bytes (122 words) - 08:13, 8 October 2009
• CRT
  ...in & Casin]] based in [[Treviso]]. The Blackburne engine had a four-stroke valves side valve in the head in 175, 250 or 350 cc, which were available in a Tou
  828 bytes (115 words) - 18:10, 14 April 2010
• Multi-valve
  ...(or '''multivalve''') when each cylinder has more than two [[poppet valve|valves]]. ...and fuel, and another for ''exhaust'' of combustion products. Adding more valves improves the flow of intake and exhaust gases, potentially improving combus
  5 KB (662 words) - 07:50, 7 December 2010
• SAR
  ...AR had a 498 cc two cylinder [[boxer engine]] with side and later overhead valves. From 1924 there was a 346 cc single cylinder with an [[oil-cooled]] engine
  850 bytes (114 words) - 15:36, 19 April 2010
• Daino
  ...gine. The engines were fitted with [[aluminum]] [[pistons]] and [[overhead valves]]. This fast 75 km/h car used [[brakes]] that were mounted on the rear whee
  867 bytes (118 words) - 10:57, 7 February 2012
• Mariani motorcycle
  ...er of bikes that could be equipped with 498 cc side valve engines with two valves for gasoline, or naphtha with three flaps to turned the engines. They were
  911 bytes (127 words) - 16:41, 9 May 2010
• Four-stroke
  ...ugh the intake (inlet) port. The intake (inlet) [[poppet valve|valve]] (or valves) then close(s), and the following upward stroke (''compression'') compresse ...spent exhaust gases from the cylinder past the then-open exhaust valve or valves, through the exhaust port.
  11 KB (1,765 words) - 11:04, 10 November 2005
• Four-stroke cycle
  ...ugh the intake (inlet) port. The intake (inlet) [[poppet valve|valve]] (or valves) then close(s), and the following upward stroke (''compression'') compresse ...spent exhaust gases from the cylinder past the then-open exhaust valve or valves, through the exhaust port.
  11 KB (1,775 words) - 09:48, 2 August 2009
• Ferrari Colombo engine
  ...k of cylinders with a 60° angle between the two banks. The engine had two valves per cylinder fed through three Weber 30DCF [[carburettor]]s. A 7.5:1 [[com ...ne was further modified with [[dual overhead camshaft]]s (though still two valves per cylinder) and a two-stage supercharger. This combination gave the car
  7 KB (1,080 words) - 23:07, 7 August 2009
• Posdam
  ...th motorized bikes with 125 cc and 150 cc four-stroke engine with opposing valves, built in 1926 by the Possio brothers in [[Turin]] and designed by the engi
  926 bytes (130 words) - 12:09, 19 April 2010
• Borgo
  ...first single line of models were the 498, 693 and 827 cc with the [[intake valves]] on the exhaust. In 1911 they adopted the use of aluminum pistons and in 1 ...921 Borgo constructed a 477 cc V-twin overhead valve race engine with four valves per cylinder. In 1925 an engine block published a version was the last engi
  3 KB (397 words) - 06:09, 3 October 2016

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