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Pneumatic valve springs are also found in several Moto GP motorcycle engines, debuting in 2002 with the Aprilia RS Cube. In 2005, Team Roberts was the first to use pneumatic valves full-time in their uncompetitive KTM powered bike. Today, almost all of the MotoGP teams use pneumatic valve technology on their bikes, including Yamaha, Suzuki and ...
Pre-cooling air before it enters the cylinders, injection of any substance other than air and fuel into the cylinders, variable-geometry intake and exhaust systems, and variable valve timing were forbidden. Each cylinder could have only one fuel injector and a single plug spark ignition. Separate starting devices were used to start engines in ...
Judd is a brand of racing car engines built by Engine Developments Ltd., a company founded in 1971 by John Judd and Jack Brabham in Rugby, Warwickshire, England.Engine Developments was intended to build engines for Brabham's racing efforts, and became one of the first firms authorised by Cosworth to maintain and rebuild its DFV engines, but has since expanded into various areas of motorsport.
The HB VI was developed at the end of 1991, but only appeared at the beginning of the 1992 season. A new feature here was semi-pneumatic valve control, in which the valves were reset using air pressure. This eliminated the need for valve springs. Renault already had a comparable system in operation on its ten-cylinder engine.
The DFV is an internal combustion engine that was originally produced by Cosworth for Formula One motor racing.The name is an abbreviation of Double Four Valve, the engine being a V8 development of the earlier four-cylinder FVA, which had four valves per cylinder.
The introduction of pneumatic valve springs in the same period allowed the engines to reach up to 20,000 rpm. [12] For a decade, the F1 cars had run with 3.0 L naturally aspirated V10 engines producing 730–750 kW (980–1,000 hp) of power with top speeds of upto 375 km/h (233 mph). [13]