fredie Posted April 18, 2009 Report Share Posted April 18, 2009 Lotus unveiled its latest Omnivore prototype engine at Geneva, a turbocharged, variable-compression, wet-sump, two-stroke unit designed to improve engine efficiency while operating on a range of renewable or gasoline fuels. Lotus is about to commission the testing program. The Omnivore draws on experience from an earlier Lotus project. The monoblock eliminates a separate cylinder head. “The Omnivore is a piston-ported two-stroke with a modified exhaust valve,” Jamie Turner, Chief Engineer of Powertrain Research at Lotus told AEI. The engine uses the Orbital FlexDI direct-injection system, using compressed air to inject the fuel. “That is entirely validated and in mass production in outboard engines, so it’s every bit as durable and reliable as you would need in an automotive engine,” continued Turner. http://www.sae.org/mags/AEI/6029 Link to comment Share on other sites More sharing options...
spacemonkey Posted April 18, 2009 Report Share Posted April 18, 2009 Lotus unveiled its latest Omnivore prototype engine at Geneva, a turbocharged, variable-compression, wet-sump, two-stroke unit designed to improve engine efficiency while operating on a range of renewable or gasoline fuels. Lotus is about to commission the testing program. The Omnivore draws on experience from an earlier Lotus project. The monoblock eliminates a separate cylinder head. “The Omnivore is a piston-ported two-stroke with a modified exhaust valve,” Jamie Turner, Chief Engineer of Powertrain Research at Lotus told AEI. The engine uses the Orbital FlexDI direct-injection system, using compressed air to inject the fuel. “That is entirely validated and in mass production in outboard engines, so it’s every bit as durable and reliable as you would need in an automotive engine,” continued Turner. http://www.sae.org/mags/AEI/6029 Wow, unfortunately these kind of things normally seem to die a death. :-( Link to comment Share on other sites More sharing options...
ashley Posted April 19, 2009 Report Share Posted April 19, 2009 What ever happened to that ultra pokey, very sparsam Honda DI 2T that competed in the Paris-Dakar some years ago? Wasn't it circa 450cc? Link to comment Share on other sites More sharing options...
Cris Posted April 20, 2009 Report Share Posted April 20, 2009 What ever happened to that ultra pokey, very sparsam Honda DI 2T that competed in the Paris-Dakar some years ago? Wasn't it circa 450cc? That'll be the exp2. Remember reading about it. I guess that Honda decided it wasn't worth pursuing. I always got the feeling that Honda wasn't too keen on two strokes at the best of times. Look how they continued the NR project... Link to comment Share on other sites More sharing options...
wavydavy Posted April 22, 2009 Report Share Posted April 22, 2009 What ever happened to that ultra pokey, very sparsam Honda DI 2T that competed in the Paris-Dakar some years ago? Wasn't it circa 450cc? As Cris says - EXP2. It featured the Activated Radical system as subsequently found on the final incarnation of the CRM250 (hence CRM250AR) and was never seen again. the system used a secondary burn process to clean up emissions, but I'm not sure it'd meet current standards as it was pretty much a 'normal' two stroke in every other aspect with no injection or anything like that. As for having a 'feeling' Honda weren't keen in two strokes... That's akin to saying one has a hunch the Taleban might not like Christians much - Soichiro hated strokers with a passion and his dislike of the two stroke premeated the factory so much that they only made them when they *absolutely_had_to* to compete with/beat the other factories, be it on road or track. Dave Link to comment Share on other sites More sharing options...
spacemonkey Posted April 22, 2009 Report Share Posted April 22, 2009 As Cris says - EXP2. It featured the Activated Radical system as subsequently found on the final incarnation of the CRM250 (hence CRM250AR) and was never seen again. the system used a secondary burn process to clean up emissions, but I'm not sure it'd meet current standards as it was pretty much a 'normal' two stroke in every other aspect with no injection or anything like that. As for having a 'feeling' Honda weren't keen in two strokes... That's akin to saying one has a hunch the Taleban might not like Christians much - Soichiro hated strokers with a passion and his dislike of the two stroke premeated the factory so much that they only made them when they *absolutely_had_to* to compete with/beat the other factories, be it on road or track. Dave I read that when Soichiro walked around the factory they had to cover up all the two stroke stuff or claim that the motor was meant for a chainsaw, etc! Link to comment Share on other sites More sharing options...
brad Posted April 22, 2009 Report Share Posted April 22, 2009 I read that when Soichiro walked around the factory they had to cover up all the two stroke stuff or claim that the motor was meant for a chainsaw, etc! Honda never have and never will build a chainsaw! brushcutter maybe but they wont make chainsaws! too destructive apparently! Link to comment Share on other sites More sharing options...
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