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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
• 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
• DOHC
  ...hows two overhead camshafts—one above each of the two [[poppet valve|valves]].]] [[double overhead cam]]
  3 KB (410 words) - 14:33, 24 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 ...at higher [[Revolutions per minute|rpm]], leading to the adoption of the [[overhead valve]] head design.
  3 KB (415 words) - 23:56, 20 September 2009
• Overhead cam
  ...hows two overhead camshafts—one above each of the two [[poppet valve|valves]].]] ...alve|valves]] or [[lifter]]s in a more direct manner, when compared with [[Overhead valve]]s (OHV) and [[pushrod]]s.
  6 KB (952 words) - 17:33, 7 August 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
• 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
• 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
• Pushrod
  ...e engine block between the camshaft and pushrods. The later [[overhead cam|overhead cam (OHC)]] design avoids the use of pushrods by putting the camshaft in th ...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
• Taurus
  ...ith single [[cylinder]] [[engines]] from 175 to 500 cc and [[valves]] with overhead [[camshaft]], some with a rear [[suspension]] [[torsion bar]]. ...r, Taurus built [[mopeds]] and [[motorcycles]], including a 175 cc with an overhead camshaft and a two-stroke 160 cc and 250 cc engine with a valve in the head
  1 KB (197 words) - 14:02, 27 November 2016
• G.R.
  ...lli 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
• Flathead engine
  ...block beside the [[piston]], instead of in the [[cylinder head]], as in an overhead valve or [[OHV]] engine. The design was common on early engine designs, but ...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
• Bugatti Type 18
  ...aight-4]] engine with [[multi-valve|3 valves per cylinder]] and a [[single overhead cam]]shaft. This large engine had a 100 mm bore and very long 160&nbs
  1 KB (153 words) - 11:18, 14 June 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
• Pushrod engine
  ...design which places the camshafts within the cylinder head and drives the valves directly or through short rocker arms, called fingers. * I-head, also known as overhead valve (OHV)
  10 KB (1,635 words) - 08:54, 4 August 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
• 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
• Fully Integrated Robotised Engine
  ...ersions from 999 cc to 1372 cc with both 8- and [[multi-valve|16-valves]]. Mechanically they are simple [[straight-4]] engines with five bearings and [[overhead cam]] heads.
  831 bytes (122 words) - 08:13, 8 October 2009
• 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

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