Lotus Omnivore 2-stroke concept engine set for Geneva debut
Lotus has revealed some details about the Lotus Omnivore engine concept that it will be unveiling at the 2009 Geneva Motor Show. The Omnivore runs on a two-stroke operating cycle that Lotus says is more suited to flex-fuel operations than conventional 4-stroke engines. It also has direct fuel injection, a system called Orbital FlexDI that allows fine-tuning the injection spray to help with HCCI (sparkless ignition) control. The engine uses a monoblock design that combines the block and head, thus eliminating the cylinder head gasket. This improves durability and reduces weight. The exhaust port has a charge trapping valve that allows assymetrical exhaust flow timing and a continuously variable exhaust opening point. A puck at the top of the combustion chamber moves up and down to alter the geometric compression, thus achieving variable compression ratio.
February 26, 2009 @ 7:25 am
Holla im first,
can dis engine can consider da proton next gen. engine???????
February 26, 2009 @ 7:26 am
new engine for Exora, lol~
February 26, 2009 @ 7:55 am
Such a new technology from our Proton subsidiary still where’s actually the technology transfer? Tuned by Lotus Neo CPS. We deserved more.
February 26, 2009 @ 8:00 am
is it suitable for diesel??? is it to use by proton?
February 26, 2009 @ 8:03 am
they can do engine but never tried on proton?
nice!
February 26, 2009 @ 8:23 am
Flexfuel is like having an engine which can run in different kind of fuel.. but not diesel, coz need higher conpression & turbo.
If i not mistaken this engine can run with Ethanol, bio-petrol or pure petrol.. Just refer back to Bently new car and you will know…
From the design picture, it seems this engine is more suitable for small sedan such like our Proton. Lotus have produce a lot of new engine, but the problem is not much ppl take it… remember, the more complicated the technology, the higher the cost and ppl may not want it…
February 26, 2009 @ 8:54 am
designed is pattented ,maybe not all to be taken by clent, anypart if customer want, they have to have under licenced, have to pay lah.
l
February 26, 2009 @ 9:28 am
hmm interesting Lotus is trying to develop lawn mower and grass cutter tech for mainstream apps. But two cyl motors are known for pollution and inefficient combustion since a certain portion of unburned fuel will escape along with exhaust gases. I wonder how Lotus has worked its way round tis problem. Another thing i read abt sparkless ignition, does tis mean diesel as one of the fuels for the flex fuel option?
February 26, 2009 @ 9:29 am
sorry typo, not two cyl… two stroke
February 26, 2009 @ 9:37 am
how nice if we can get the figures??bhp?torque??
hope proton redevelop savvy to something like fiat 500 with this engine…should be a hot seller…
February 26, 2009 @ 9:39 am
Currently 2 stroke engine are becoming a dinosaur due to its polluting fumes and inefficiency ..
My highschool industrial arts textbook tells me that 4 stroke engines consists of 1) intake 2) compression 3) ignition 4) exhaust
Lotus 2 stroke is sparkless ignition (similar to diesel combustion)
may be the combustion and the ignition stroke (fuel injection) is lumped into one..thus only 2 cycle 1) Ignition 2) exhaust only? this may become more efficient and cut down on the pollution as compared to conventional 2 stroke…
To do this you need a high compression injector which are costly…
February 26, 2009 @ 9:52 am
The engine sound will be like ‘buzzing hornet’. I like it!!
February 26, 2009 @ 12:12 pm
thy will probably sell the technology to korean and chinese as its more profitable that way…
February 26, 2009 @ 1:58 pm
I love how the way it works.
February 26, 2009 @ 3:45 pm
This concept could have been a collaboration with Orbital Corporation, Australia, where they have two strokes orbital engine produced for motorcycles (Aprilia). The technology mentioned, Flex DI, HCCI are stuff from Orbital. Their two stroke engines are cleaner than the traditional two strokers, and they work similar the wankel rotary engine, but slightly different, thus Orbital. They maybe cleaner than four strokes. This has been around for quite sometimes. Only in concept for Lotus, but already in production for Orbital.
February 26, 2009 @ 5:58 pm
But two strokes motors are known for pollution and inefficient combustion since a certain portion of unburned fuel will escape along with exhaust gases.
*******
the type of 2 stokes that pollute the earths is the scavenging type…. that is the type that mix btwn burnt and unburnt fuel… but this type using direct injection, so, probably less or equal to 4 stroke…
February 26, 2009 @ 6:57 pm
i wonder how many cc lotus will develope in their debut at geneva, which will be held next week right?
paul, remember to get more details on this,ok??
thanks!