Comments on: Honda’s Variable Cylinder Management i-VTEC

By: ronak patel

ronak patel — Mon, 23 Jan 2012 16:17:50 +0000

yes!!!
i got my project topic….

By: Detroit: Honda Accord Coupe Concept

Detroit: Honda Accord Coupe Concept — Sun, 14 Jan 2007 07:53:37 +0000

[...] For this concept, Honda employed a 3.0 liter V6 with Variable Cylinder Management (VCM) technology which shuts off 3 cylinders during low load operations. It also has an ACE body structure – Advanced Compatibility Engineering(TM), a front-end structure that helps absorb and disperse crash energy over a large area in frontal impact. [...]

By: heybadigol

heybadigol — Wed, 18 Jan 2006 19:06:39 +0000

holy s**t, 520NM from the M5 engine. You could power a small ship with that =)

By: paramsingwalia

paramsingwalia — Wed, 18 Jan 2006 11:10:13 +0000

hooray to nissan..but sayang,msx project from proton is heard to be using nissan engine…sigh..now all gone.

By: shaymen

shaymen — Wed, 18 Jan 2006 10:22:48 +0000

nissan is indeed the leader in technology…they just built a car with non scracth paint..

By: catborg

catborg — Wed, 18 Jan 2006 08:33:29 +0000

nissan used it in 3.0 nissan cefiro v6. They already have smooth, silky and powerfull engin already .

and already won years 'good engine' awarded .

for me = honda just another kind of copier

in my personal view. nissan still the best one in engine = Powerfull but economic.

By: Isamu

Isamu — Tue, 17 Jan 2006 23:31:42 +0000

Lotus was the company who invented and used the Active Noise Cancellation system.. i think they used it on the Esprit V8..

By: burn

burn — Tue, 17 Jan 2006 23:24:42 +0000

paul..3 cylinder vibrates a lot due to imbalance count? kelisa, kancil (not sure about kenari…kapcai all imbalance count. kapcai one cylinder only…how do they cancel out vibration?

By: marmitecrab

marmitecrab — Tue, 17 Jan 2006 21:40:55 +0000

Actually, I read about this noise cancellation device a few years ago. I think it was Nissan who was researching this technology. The device was fitted under the front seats (mic and speaker) and it picked up the sound emanating from the engine compartment and sends back the same frequency in real time.

By: heybadigol

heybadigol — Tue, 17 Jan 2006 18:21:39 +0000

Hey, if they can have noise cancellation in cars & highway, perhaps you can find similar application against your noisy neighbour or nagging "significant other", hehe….. Just imagine, your bf/gf start nagging, just shut them up by pointing the noise cancellation device against them.

A question please? The noise cancellation works only in 3 cylinder mode right? Meaning that there is less noise or no noise at all from the engine combustion during idling (except for exhaust & intake note)? Must be weird to hear only exhaust note, but not accompanied by the engine combustion sound.

By: shaymen

shaymen — Tue, 17 Jan 2006 17:23:15 +0000

heybadigol said,

January 17, 2006 @ 5:05 pm

Honestly Syamen, you canâ€™t compare a Savvy engine against a Honda 3.0. That would not be a fair comparison =)

shaymen said,

January 17, 2006 @ 4:09 pm

————————————————————–

hmmmmâ€¦.boring engineâ€¦

mitsu already use this technology in mivec-mdâ€¦

my savvy is savier than this engine,it can go to 18.86km per litreâ€¦

the cygnus engine by toyota is really quietâ€¦no need this speaker to do the jobâ€¦

By: heybadigol

heybadigol — Tue, 17 Jan 2006 17:05:09 +0000

Honestly Syamen, you can't compare a Savvy engine against a Honda 3.0. That would not be a fair comparison =)

I believe Mercedes has something similar in the S-Class engines. But if you guys think that the 3.0 veriable cylinder engine is spectacular, wait till you read about it's hybrid cousin (the 3.0 V6 hybrid available on the US Accord). The engine will completely switch off during idling and then run on electric motors at low loads. Its not just fuel efficient, but is also very environmental friendly, especially during idling as there are no emissions. Cool, huh??

By: shaymen

shaymen — Tue, 17 Jan 2006 16:09:13 +0000

hmmmm….boring engine…

mitsu already use this technology in mivec-md…

my savvy is savier than this engine,it can go to 18.86km per litre…

the cygnus engine by toyota is really quiet…no need this speaker to do the job…

By: SEE FU

SEE FU — Tue, 17 Jan 2006 15:53:45 +0000

Actually this noise cancellation system is simple. It is actually a MIC, recorder and Speakers. At first Records the engine sound using a MIC and then send back the same Signal or Waves to the engine. To repeat this proceed frequently.

But it is not easy to apply it on vehicle, due to space, environment and durability issues.

Honda engineers is great!

YAU MOU GAU…..CHOR!! Cheers!

By: Jason

Jason — Tue, 17 Jan 2006 15:38:50 +0000

Huh, why so little difference in mileage. Well, it does run cheaper than 3.0 V6 since they are comparing with 2.4.

By: aesthari

aesthari — Tue, 17 Jan 2006 15:02:55 +0000

Wow, using only 3 cylinders instead of all 6, and noise cancellation. All so cool, wonder how will the engine sound should the noise cancellation gadget go out of order? I like the 3 cylinder idea though, it's really practical and saves a lot on fuel.

By: Initial D

Initial D — Tue, 17 Jan 2006 14:42:37 +0000

looks similar to MIVEC-MD. Anyone felt this too?

By: pycazu

pycazu — Tue, 17 Jan 2006 14:24:57 +0000

Yes, I got that active noise control had been there quite long time liao. But really surprise it apply into a vehicle because definitely it won't be cheap.

I think many mechanics would feel sucked to service this kind of hi-tech engine… haha…

By: SEE FU

SEE FU — Tue, 17 Jan 2006 14:13:18 +0000

Noise cancellation system had been already used on Japanese highway especially at Tokyo city. I was Surprised that Honda had applied it on vehicle too. Great move!

But wonder how noisy of this new Engine could be (I means normal condition without this device) if the noise cancellation device out of order.

I like HOnda engine Technologies!

YAU MOU GAU……CHOR!!! Cheers!

By: Paul Tan

Paul Tan — Tue, 17 Jan 2006 14:06:09 +0000

We've learned in physics before what, when a direct opposite sound wave collides with another sound wave, it cancels each other out. That's how noise cancellation headphones work too.

By: pycazu

pycazu — Tue, 17 Jan 2006 14:02:50 +0000

So, in one word, u'll get what u want at any circumstance, either pause-and-continue city driving, or smooth north-south traveling… Cool men!!! Honda – really made the term Power of Dream.

Really interested to know how a speaker can cancel out noise by outputting its opposite phase, never heard this before. Gonna find it out.

By: marmitecrab

marmitecrab — Tue, 17 Jan 2006 13:53:24 +0000

Sounds amazing but the difference is not much.

Wonder how much price difference this new technology will cost? And also wonder if the local Honda mechanics and also the non-Honda-authorised-but-experienced-enough-to-maintain-Honda-cars mechanics would be able to handle such a radical change in technology.

But definitely sounds very cool, especially when telling people about how it works.