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...primarily on [[semi-truck]]s or other large vehicles that modifies engine valve operation to use engine [[Physical compression|compression]] to slow the ve ...full length by a [[solenoid]] when the engine brake is engaged so that the valve opens as directed by the cam. This releases the compressed air in the cylin

! colspan=2 |Ducati 1098 Quattrovalvole (four valve) engine The '''Ducati Quattrovalvole''' are water-cooled, four valve engines from [[Ducati]]. They have been produced since 1985 in capacities f

...removable hardtop. It has a 4.7&nbsp;L naturally-aspirated [[multivalve|60-valve]] [[V12]] engine that was developed from the 3.5L V12 used in the 1992 Ferr Configuration: Longitudinal 60-valve 65° V12, derived from F1 unit<br>

...he first production vehicle to feature [[dihedral doors]], also known as [[butterfly doors]]. Other vehicles which feature doors of this nature include the [[To ...16 spark plugs. The engine used four chain-driven camshafts to operate the valve train and had a rev-limit of 10000 rpm. The engine produced 230 bhp (172 kW

...can be rotated so that it (almost) completely blocks the flow of air. This valve controls the flow of air through the carburetor throat and thus the quantit ...sufficient to pull fuel through small openings placed after the butterfly valve (and in SU and similar sidedraft carburetors to pull the piston and meterin

...i 333SP]] which improves cooling and the car's frontal crash safety. The [[butterfly doors]] (similar to those of the [[McLaren F1]]) are designed such that eve ...tal capacity of 5998&nbsp;[[cubic centimetres]], each with 4&nbsp;[[Poppet valve|valves]]. The [[redline rpm]] at 8200 and the torque of 657 [[newton metre]

...ti history is classically based on [[L-twin]] engines, using [[desmodromic valve]] technology. Initially, Ducati considered the possibility of creating a Mo | Liquid-cooled, 90-degree, [[V4]] 4-stroke with 16-valve, [[Desmodromic]] [[DOHC]]