Can I edit the list of the blogs I've read?
an engine which enables/disables cylinders on the fly
Hello Guest		   
  • Login
• Register…
• Start blog		   • Who, Where, When
• What is interesting here?
• Duels		   • Polls
• Avatars
• Interests		   • Cities and Countries
• Random blog
• Users search		   • Search
• Games
• Tests
• CarGuru		   • Ñîîáùåñòâà
• Talxy Chat
• Horoscope
• Online		  
Register!
CarGuru > Open discussion > an engine which enables/disables cylinders on the fly 10 May 2005 04:37:44
  Recent blog posts: 
95 mirage
I have a 95 mirage and this is the second time the injector in number 3 cylinder has gone bad. Anything…

1988 Ford F-150 Truck
I would like to remove the pollution control system from my 1988 F-150, 4.9L I6 300 4x4. Can anyone…

my 99 M chrysler has started to…
my 99 M chrysler has started to cool and then starts to give off heat in the ac vents and then cool…

dodge 2000 intrepid
bought this car right off the show room floor in Bartow fl to this date I have not had any work done on…

starting issue, 2002 dodge…
My 2002 Dodge Caravan wouldn't crank. I tested some things, replaced the battery. After installing the…

;-)
;-)­

stereo pin
I put a new battery in my girl friends 94 900 and it wants a code for the radio. There is nothing in the…

Coolant temp on Saturn Sky
I just purchased a 2007 Saturn Sky Redline. As I was driving yesterday I happen to have the info set on…

Saturn Sky Red Line
I just purchased a 2007 Saturn Sky Redline. I noticed will driving yesterday that when I turned on the…

Que pour la place trange
Que pour la place trange

  They have birthday today: 
Esther
  Forums:   
    topic feeds

• CarGuru  all topics, blogs and comments

• Driving

• Formula-1

• Indycar

• Nascar

• Other sport

• Technology

• 4 x 4

• Volkswagen

• Mercedes

• Acura

• Alfa-romeo

• Audi

• BMW

• Chrysler

• Dodge

• Ford

• General Motors

• Jeep Willys

• Honda

• Hyundai

• Mazda

• Nissan

• Peugeot

• Pontiac

• Porsche

• Saab

• Saturn

• Toyota

• Volvo

• Buy / Sell

• Open discussion

• Anonymous
  Discuss: 
1983 z28 camaro brake hose…
Help I am trying to replace the front brake hose on my 83 camaro I just bought it a week ago and also…

stuck hatchback
I have a 1999 Subaru Outback with a stuck hatchback. The remote opener seems to be functioning properly…

How to duplicate Navtech CD’s
Considering that Navtech doesn’t want to support further updates of the older CD format, I don’t see any…

air noise on a 2009 Gm Tahoe
2009 tahoe, driving at 42 miles an hour I get air noise, inside the vehicle. This is not engine noise I…

Hello
Hello!
  Recent forum topics: 
Brake Lights won't work
brake lights on 1996 Grand Am won't work. Fuse and lights are fine. Suggestions?

honda civic 87 model problem
i would like some information on why my honda civic wont start at times after its hot when running it…

mazda premacy glowplug lights…
i have a mazda premacy 2litre diesel . have a problem at the moment ,glowplug light flashing with loss…

I have a 96 chrysler new york…
I have a 96 chrysler new york lhs but no owners manuel and on the message center there is a light that i…
  Recent forum comments:
RE: Ask How To Replace Headlight…
how do I release the locking ring on the headlamp bulb in a 99 dodge ram 2500?

RE: Re: Transmission shudder when…
who are you speaking to

RE: Re: Transmission shudder when…
I can feel something like a kick when I first hit the gas pedal when I take off.

RE: stuck hatchback
on the rear gate that is

RE: stuck hatchback
just my latch is stuck and the door wont close on my 2000 sub outback limited

RE: 1999 Chrysler T&C - Speed…
I am reading all of this and am amazed at how bad I am getting ripped off by my Chrysler dealership....4…

RE: How to duplicate Navtech CD’s
where can i buy nav cd's for a 2003 s class mercedes also the latest version for a 2005 sl?

RE: Heating problem in 1988 Honda…
well thats no always true!!! my husband replaced the thermostat/thermome­ter..... and the water…

RE: Mitsubishi Diamante ECU faults…
how did you read the codes

RE: 98 Dodge Grand Caravan Problems
I had the same problem with the instrument panel, after about a months worth of greif, and dollars…
  Ìîäåðàòîð:
 Administrator

an engine which enables/disables cylinders on the fly

Guest 9 May 2005 22:45:28
 "Powered by the intelligence of i-VTEC® technology, VCM™ quickly and
seamlessly activates or deactivates the three rear cylinders, depending
on the driver's needs. So you get the best of both worlds: V-6 power
when accelerating or climbing, as well as the efficiency of a smaller
engine while cruising."


am i understanding correctly? an engine which configures the number of
cylinders in use on the fly? anyone understand if this really saves
fuel/money (i am imagining friction/wear and tear/incredibly complex
valvetrain etc). if it really does save money then i would be truely
impressed.


http://search.honda­cars.com/Default.asp­?ui_mode=paging&prio­r_transaction_id=259­8&navigation_purpose­=ANSWER&page_start=3­&page_size=10&direct­ion=next

Add comment
Guy King 9 May 2005 23:15:23 [ permanent link ]
 The message <1115664328.186551.­327500@o13g2000cwo.g­ooglegroups.com>
from beerismygas@yahoo.c­om contains these words:
am i understanding correctly? an engine which configures the number of> cylinders in use on the fly? anyone understand if this really saves> fuel/money (i am imagining friction/wear and tear/incredibly complex> valvetrain etc). if it really does save money then i would be truely> impressed.

Haven't BMW been doing this for years?

--
Skipweasel.
Ivor Cutler - "Never knowingly understood."


Add comment
Guest 9 May 2005 23:20:42 [ permanent link ]
 On 9 May 2005 11:45:28 -0700, beerismygas@yahoo.c­om wrote:
"Powered by the intelligence of i-VTEC® technology, VCM™ quickly and>seamlessly activates or deactivates the three rear cylinders, depending>on the driver's needs. So you get the best of both worlds: V-6 power>when accelerating or climbing, as well as the efficiency of a smaller>engine while cruising.">
am i understanding correctly? an engine which configures the number of>cylinders in use on the fly? anyone understand if this really saves>fuel/money (i am imagining friction/wear and tear/incredibly complex>valvetrain etc). if it really does save money then i would be truely>impressed.

I couldn't open the url but daimler benz were working on this 10 years
ago. The idea is that the energy cost of rotating the engine with some
cylinders disabled but just bouncing against the gas in the cylinders
was a little less than the pumping losses. The gain is that the active
cylinders work better thermodynamically. This is because they are
having to work a bit harder than when the load is shared between all
cylinders, hence they take in a larger charge of air which means
compression pressure is higher. Expanding a hot gas from a higher
pressure means you get more work out of it if you dump it at a similar
pressure and temperature as before.

A similar concept was used on old stationary engines, the engine had
no throttle so took a full charge of air in, like a diesel, but
differed in that it was premixed with gas or petrol. So each time it
fired it ran flat out. Once the engine started to overspeed a governor
moved a lever or changed the pivot on the inlet valve control, holding
the valve shut. As revs dropped the governor then enabled the inlet
valves again for the cycle to continue, they are known as "hit and
miss" engines.

AJH


Add comment
Dojj 9 May 2005 23:36:18 [ permanent link ]
 I think the big mercs do this anyway
they shut off cylinders both fuelling and sparking when you are cruising

<beerismygas@yahoo.­com> wrote in message
news:1115664328.186­551.327500@o13g2000c­wo.googlegroups.com.­..
"Powered by the intelligence of i-VTEC® technology, VCMT quickly and
seamlessly activates or deactivates the three rear cylinders, depending
on the driver's needs. So you get the best of both worlds: V-6 power
when accelerating or climbing, as well as the efficiency of a smaller
engine while cruising."


am i understanding correctly? an engine which configures the number of
cylinders in use on the fly? anyone understand if this really saves
fuel/money (i am imagining friction/wear and tear/incredibly complex
valvetrain etc). if it really does save money then i would be truely
impressed.


http://search.honda­cars.com/Default.asp­?ui_mode=paging&prio­r_transaction_id=259­8&navigation_purpose­=ANSWER&page_start=3­&page_size=10&direct­ion=next


Add comment
Guest 10 May 2005 00:14:34 [ permanent link ]
 GM's Northstar V8s (I think that's the one anyway) have been doing this
for a while, they just turn of the petrol squirting things and magical
spark generators to the relevant 4 cylinders. Nothing too complicated.

Dunno how much improvement to fuel consumption it contributes, but I
think it has no effect on engine longivity, iirc these engines also
have the 100,000 mile service interval.

Add comment
Pete M 10 May 2005 00:22:30 [ permanent link ]
 In news:1115664328.186­551.327500@o13g2000c­wo.googlegroups.com,­
beerismygas@yahoo.c­om <beerismygas@yahoo.­com> decided to enlighten our
sheltered souls with a rant as follows> "Powered by the intelligence of i-VTEC® technology, VCMT quickly and> seamlessly activates or deactivates the three rear cylinders,> depending> on the driver's needs. So you get the best of both worlds: V-6 power> when accelerating or climbing, as well as the efficiency of a smaller> engine while cruising.">
am i understanding correctly? an engine which configures the number of> cylinders in use on the fly? anyone understand if this really saves> fuel/money (i am imagining friction/wear and tear/incredibly complex> valvetrain etc). if it really does save money then i would be truely> impressed.

The Septics have been trying to get this to work since around 1977. They've
released a few onto the market. ISTR Cadillac, or someone similar, releasing
a V8-6-4 in around 1979. Didn't work.

--
Pete M

Mercedes 260E, Porsche 911 Carrera 3.2
Ford Capri (ressurection started)
VW Golf Clipper Cabriolet

COSOC #5
Scouse Git extraordinaire. Liverpool, Great Britain


Add comment
Paul Cummins 10 May 2005 00:38:00 [ permanent link ]
 In article <1115669674.060704.­51080@z14g2000cwz.go­oglegroups.com>,
conkersack@yahoo.co­m () wrote:
GM's Northstar V8s (I think that's the one anyway) have been doing > this> for a while, they just turn of the petrol squirting things and magical> spark generators to the relevant 4 cylinders.

Didn;t teh old Alfa twinspark's do something similar - on the overrun
you were running using no fel at all.

--
Paul Cummins - Always a NetHead
Wasting Bandwidth since 1981

I'm Backing Blair - www.backingblair.co­.uk
Add comment
Angus McCoatup 10 May 2005 01:16:20 [ permanent link ]
 there was a v12 concept car on topgear or sumat that did it , think it was a
cadilac


Add comment
Tim 10 May 2005 01:26:51 [ permanent link ]
 
<beerismygas@yahoo.­com> wrote in message
news:1115664328.186­551.327500@o13g2000c­wo.googlegroups.com.­..
"Powered by the intelligence of i-VTEC® technology, VCMT quickly and
seamlessly activates or deactivates the three rear cylinders, depending
on the driver's needs. So you get the best of both worlds: V-6 power
when accelerating or climbing, as well as the efficiency of a smaller
engine while cruising."


am i understanding correctly? an engine which configures the number of
cylinders in use on the fly? anyone understand if this really saves
fuel/money (i am imagining friction/wear and tear/incredibly complex
valvetrain etc). if it really does save money then i would be truely
impressed.

Fords 4.6 , 5.0 and 6.3 litre Northstar V8 has been doing this for 2 years.

Tim..


Add comment
Guest 10 May 2005 01:42:47 [ permanent link ]
 if this idea works why cant it be extended to all motor cars through
an aftermarket addon:
you replace your injectors with a set of special fuel injectors which
have another wire to actuate a small valve which can let the
compression escape to the outside

when you want to cruise, you just press a button and it disables (or
windmills, in aero engine terminology) half of the engine.

there you have it, my second patenable idea in 24 hrs!!!

though i think the most sensible compromise between power and economy
would be super/turbocharged sub 1000cc engines like that in the Smart
Car or japanese K cars.

to me the variable cylinder idea is like trying to walk on one leg to
save energy

Add comment
Guest 10 May 2005 01:47:53 [ permanent link ]
 You wrote:
Didn;t teh old Alfa twinspark's do something similar - on the> overrun you were running using no fel at all.


Don't know to be honest, but i think most modern cars have that kind of
overrun thing. Interesting you say Alfa Romeo though, apparently thier
North-American Kamal (SUV I think) will be using the 'Premium V8' (i.e.
the Northstar).

It's quite an interesting engine really (as far as engines are
interesting...)

Add comment
Pete M 10 May 2005 04:37:44 [ permanent link ]
 In news:1115674967.721­506.310540@f14g2000c­wb.googlegroups.com,­
beerismygas@yahoo.c­om <beerismygas@yahoo.­com> decided to enlighten our
sheltered souls with a rant as follows> if this idea works why cant it be extended to all motor cars through> an aftermarket addon:> you replace your injectors with a set of special fuel injectors which> have another wire to actuate a small valve which can let the> compression escape to the outside>
when you want to cruise, you just press a button and it disables (or> windmills, in aero engine terminology) half of the engine.>
there you have it, my second patenable idea in 24 hrs!!!>
though i think the most sensible compromise between power and economy> would be super/turbocharged sub 1000cc engines like that in the Smart> Car or japanese K cars.

Bollocks to that, engines should be as huge as possible.

Out of all the stuff I drive on a regular basis, the smallest motor is the
1.8 in the Golf.

Otherwise it's either a 2.6 straight 6, 3.2 flat six, 4.6 V8, 6.8 V10, or
7.2 V8.

Little stuff just isn't fun, and doesn't sound anywhere near as good.

--
Pete M

Mercedes 260E, Porsche 911 Carrera 3.2
Ford Capri (ressurection started)
VW Golf Clipper Cabriolet

COSOC #5
Scouse Git extraordinaire. Liverpool, Great Britain


Add comment
 

Add new comment

As:
Login:  Password:  
 
 
  
 
respect your talk pals, avoid using obscene language, typing entire messages in CAPS, posting buy/sell ads or violating netiquette or the RF Criminal Code..

CarGuru > Open discussion > an engine which enables/disables cylinders on the fly 10 May 2005 04:37:44
see also:
633csi won't start
BMW Z4 2006 Navigation system
pass tests:
see also:
peugeot 406 estate 1999
95 Toyota Tacoma Dash Bulbs
Crankshaft sensor 95 dodge stratus
  Copyright © 2001—2009 Car-Guru
Idea: Miñhael Monashev
See Help and FAQ in the community support.car-guru.com.
Write in the community about the bugs you have noticedbugs.car-guru.com.
Write your offers and comments in the communities suggest.car-guru.com.
Information for parents.
Write us at:
If you would like to report an abuse of our service, such as a spam message, please .