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- *Type: 90° [[V4 engine|V4 cylinder]] "Double-L-Twin", ''Twin Pulse'' firing order, liquid-cooled, DOHC, Desmodromic, four titanium valves per5 KB (683 words) - 23:29, 9 November 2010
- ...re than 230 hp), without excessively increasing the number of revs. A Twin would have had to rev at over 17,000 rpm, but this would require a very sho ...Double L Twin with 2 cylinder Stroking at the same time (also called Twin Pulse). With four valves per cylinder, the total number of valves is sixteen - ''18 KB (2,664 words) - 14:17, 31 October 2009
- [[Image:Twin Linear Aerospike XRS-2200 Engine.jpg|thumb|Linear aerospike XRS-2200 engine * [[Antimatter catalyzed nuclear pulse propulsion]] (fission and/or fusion energy)30 KB (4,590 words) - 20:28, 7 August 2008
- ...or atomization at low air speeds, needing modifications such as sequential twin-barrel designs) and better breathing due to eliminating the carburetor's [[ ...s duration (pulsewidth) is proportional to the amount of fuel desired. The pulse is applied once per engine cycle, which permits pressurized fuel to flow fr35 KB (5,222 words) - 08:19, 11 June 2009