ja det är ju brp som har e-tech så de satsar ju antagligen på alla sina 2t-applikationer, tekniken är ju rätt gammal (2003) så det är på tiden att det kommer ut på marknaden
saxar lite från wiki för mer läsning:
http://en.wikipedia.org/wiki/Gasoline_direct_injection#In_two-stroke_engines
The benefits of direct injection are even more pronounced in
two-stroke engines, because it eliminates much of the pollution they cause. In conventional two-strokes, the exhaust and intake ports are both open at the same time, at the bottom of the piston stroke. A large portion of the fuel/air mixture entering the cylinder from the crankcase through the intake ports goes directly out, unburned, through the exhaust port. With direct injection, only air comes from the crankcase, and fuel is not injected until the piston rises and all ports are closed.
Two types of GDI are used in two-strokes: low-pressure air-assisted, and high pressure. The former, developed by Orbital Engine Corporation of Australia (now Orbital Corporation) injects a mixture of fuel and compressed air into the combustion chamber. When the air expands it atomizes the fuel into 8-
micrometre droplets, very small relative to the 20 to 30-micrometre fuel droplets in other direct injection systems. The Orbital system is used in motor scooters manufactured by Aprilia, Piaggio, Peugeot and Kymco, in outboard motors manufactured by Mercury and Tohatsu, and in personal watercraft manufactured by Bombardier Recreative Products (BRP).
In the early 1990s, Ficht GmbH of
Kirchseeon,
Germany developed a high-pressure direct injector for use with
two stroke engines. This injector was unique in that it did not require a high pressure pump but was still capable of generating enough pressure to inject into a closed combustion chamber.
Outboard Marine Corporation (OMC) licensed the technology in 1995 and introduced it on a production outboard engine in 1996.
[16][17] OMC purchased a controlling interest in Ficht in 1998.
[18] Beset by extensive warranty claims for its Ficht outboards and prior and concurrent management-financial problems, OMC declared bankruptcy in December of 2000 and the engine manufacturing portion and brands (
Evinrude Outboard Motors and
Johnson Outboards), including the Ficht technology, were purchased by
BRP in 2001.
[19],
[20]
Evinrude introduced the E-Tech system, an improvement to the Ficht fuel injection, in 2003, based on U.S.
patent 6,398,511. In 2004, Evinrude received the EPA Clean Air Excellence Award for their outboards utilizing the E-Tech system.
[21]
Yamaha also has a high-pressure direct injection (HPDI) system for two-stroke outboards. It differs from the Ficht/E-Tech and Orbital direct injection systems because it uses a separate, belt driven, high pressure, mechanical fuel pump to generate the pressure necessary for injection in a closed chamber. This is similar to most current
4-stroke automotive designs.
EnviroFit, a non-profit corporation sponsored by
Colorado State University, has developed direct injection retrofit kits for
two-stroke motorcycles in a project to reduce
air pollution in
Southeast Asia, using technology developed by
Orbital Corporation of
Australia.
[22] The
World Health Organization says air pollution in Southeast Asia and the Pacific causes 537,000 premature deaths each year. The 100-million two-stroke taxis and motorcycles in that part of the world are a major cause.
[23] [24]
