Comments on: Lotus Omnivore 2-stroke concept engine set for Geneva debut http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/ Paul Tan on the Automotive Industry Sun, 27 May 2012 04:29:35 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: doug http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-637654 doug Sun, 04 Mar 2012 17:49:47 +0000 http://paultan.org/?p=12576#comment-637654 The direct injection controls the fuel amount and timing. The fuel is sprayed in at top compression and each spray is burned before the bottom of the stroke when the exhaust is blown out by the air charge. No fuel is supposed to be left to go out the exhaust. Different than the old crankcase pressurizing the fuel into the combustion chamber the new 2 stroke is usually supercharged. and the crank is a "wet sump" like the 4 stroke model, thus no oil in the fuel. The direct injection controls the fuel amount and timing. The fuel is sprayed in at top compression and each spray is burned before the bottom of the stroke when the exhaust is blown out by the air charge. No fuel is supposed to be left to go out the exhaust.

Different than the old crankcase pressurizing the fuel into the combustion chamber the new 2 stroke is usually supercharged. and the crank is a “wet sump” like the 4 stroke model, thus no oil in the fuel.

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]]> By: WooDz http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-302012 WooDz Tue, 23 Feb 2010 23:52:14 +0000 http://paultan.org/?p=12576#comment-302012 It's probably easier to equate this as a 2cyl as opposed to a 2-stroke in the conventional sense. The inefficiency in a 2-stroke is usually caused by an inaccurate mix of petrol and oil. Also mentioned is the direct-injection and HCCI. In a sense this works similar to a diesel however not suitable for diesel. HCCI can occur when the engine is at optimum operating temperature and fuel will combust under pressure creating more efficiency from less fuel injected into the chamber. It's probably easier to equate this as a 2cyl as opposed to a 2-stroke in the conventional sense. The inefficiency in a 2-stroke is usually caused by an inaccurate mix of petrol and oil. Also mentioned is the direct-injection and HCCI. In a sense this works similar to a diesel however not suitable for diesel. HCCI can occur when the engine is at optimum operating temperature and fuel will combust under pressure creating more efficiency from less fuel injected into the chamber.

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]]> By: infinity http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215637 infinity Thu, 26 Feb 2009 18:57:39 +0000 http://paultan.org/?p=12576#comment-215637 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! 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!

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]]> By: autojohndoe http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215621 autojohndoe Thu, 26 Feb 2009 17:58:03 +0000 http://paultan.org/?p=12576#comment-215621 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... 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…

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]]> By: kuka http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215591 kuka Thu, 26 Feb 2009 15:45:07 +0000 http://paultan.org/?p=12576#comment-215591 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. 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.

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]]> By: kei9 http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215549 kei9 Thu, 26 Feb 2009 13:58:38 +0000 http://paultan.org/?p=12576#comment-215549 I love how the way it works. I love how the way it works.

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]]> By: e-nabilll http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215479 e-nabilll Thu, 26 Feb 2009 12:12:09 +0000 http://paultan.org/?p=12576#comment-215479 thy will probably sell the technology to korean and chinese as its more profitable that way... thy will probably sell the technology to korean and chinese as its more profitable that way…

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]]> By: layman http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215450 layman Thu, 26 Feb 2009 09:52:54 +0000 http://paultan.org/?p=12576#comment-215450 The engine sound will be like 'buzzing hornet'. I like it!! The engine sound will be like 'buzzing hornet'. I like it!!

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]]> By: Environmentalist http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215447 Environmentalist Thu, 26 Feb 2009 09:39:46 +0000 http://paultan.org/?p=12576#comment-215447 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... 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…

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]]> By: Prem3377 http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215445 Prem3377 Thu, 26 Feb 2009 09:37:00 +0000 http://paultan.org/?p=12576#comment-215445 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... 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…

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]]> By: knight_templar http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215444 knight_templar Thu, 26 Feb 2009 09:29:21 +0000 http://paultan.org/?p=12576#comment-215444 sorry typo, not two cyl... two stroke sorry typo, not two cyl… two stroke

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]]> By: knight_templar http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215443 knight_templar Thu, 26 Feb 2009 09:28:23 +0000 http://paultan.org/?p=12576#comment-215443 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? 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?

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]]> By: awak http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215440 awak Thu, 26 Feb 2009 08:54:19 +0000 http://paultan.org/?p=12576#comment-215440 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 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

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]]> By: Littlefire http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215437 Littlefire Thu, 26 Feb 2009 08:23:36 +0000 http://paultan.org/?p=12576#comment-215437 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... 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…

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]]> By: haro http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215434 haro Thu, 26 Feb 2009 08:03:22 +0000 http://paultan.org/?p=12576#comment-215434 they can do engine but never tried on proton? nice! they can do engine but never tried on proton?

nice!

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]]> By: ali38hak http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215432 ali38hak Thu, 26 Feb 2009 08:00:51 +0000 http://paultan.org/?p=12576#comment-215432 is it suitable for diesel??? is it to use by proton? is it suitable for diesel??? is it to use by proton?

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]]> By: azrai http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215430 azrai Thu, 26 Feb 2009 07:55:29 +0000 http://paultan.org/?p=12576#comment-215430 Such a new technology from our Proton subsidiary still where's actually the technology transfer? Tuned by Lotus Neo CPS. We deserved more. Such a new technology from our Proton subsidiary still where's actually the technology transfer? Tuned by Lotus Neo CPS. We deserved more.

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]]> By: mitlanevo http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215428 mitlanevo Thu, 26 Feb 2009 07:26:34 +0000 http://paultan.org/?p=12576#comment-215428 new engine for Exora, lol~ new engine for Exora, lol~

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]]> By: arul http://paultan.org/2009/02/26/lotus-omnivore-2-stroke-concept-engine-set-for-geneva-debut/#comment-215427 arul Thu, 26 Feb 2009 07:25:25 +0000 http://paultan.org/?p=12576#comment-215427 Holla im first, can dis engine can consider da proton next gen. engine??????? Holla im first,

can dis engine can consider da proton next gen. engine???????

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