Honda Car Forum

Honda has a new engine that uses the
Atcheson & Topeka cycle (or something like that).

How is the fuel mixed with the air?
What happens when the air/fuel is being forced out
of the cylinder before the intake valve closes?

That is what happens, isn't it?

Al <ecarecar@yahoo.com> wrote in news:10ub4megeu6a9ad@corp.supernews.com:

> Honda has a new engine that uses the
> Atcheson & Topeka cycle (or something like that).
>
> How is the fuel mixed with the air?

It could be a direct injection(into the cylinder,not the intake plenum)
form of 2-cycle engine. This has been developed for diesel ICEs(internal
combustion engines=ICE)

> What happens when the air/fuel is being forced out
> of the cylinder before the intake valve closes?
>
> That is what happens, isn't it?
>


Any unburned hydrocarbons in todays engines get burned by the catalytic
converter,that may be what's planned for this other type of ICE.
Or part of the exhaust may get fed back into the intake air.(EGR)
Or both.

Just SWAG on my part.

--
Jim Yanik
jyanik
at
kua.net

In article <10ub4megeu6a9ad@corp.supernews.com>, Al <ecarecar@yahoo.com> wrote:

> Honda has a new engine that uses the
> Atcheson & Topeka cycle (or something like that).
>
> How is the fuel mixed with the air?
> What happens when the air/fuel is being forced out
> of the cylinder before the intake valve closes?
>
> That is what happens, isn't it?

You should consider visiting a magazine shop and buying a copy of
Honda Tuning magazine. If you like it, subscribe to it. It's my
guess that there will be an article about the new engine in the
current edition or the next edition.

--
NEWSGROUP SUBSCRIBERS MOTTO
We respect those subscribers that ask for advice or provide advice.
We do NOT respect the subscribers that enjoy criticizing people.

Is that the engine that runs on only 2 cylinders when the RPMs are constant,
like in highway speeds? I read that a while back, seemed interesting,
actually it was printed in a Japanese auto magazine that a friend translated
to me. Sort of the 4-6-8 engine developed by GM in the 70s, or was that the
8-6-4? But I digressed.

I think the ECU shuts off the injector to the unused cylinders, also the
valves are frozen using the same technology of V-Tech, but in reverse.
Supposed the engine gets about 25km/l which equates to about 60mpg.


"Al" <ecarecar@yahoo.com> wrote in message
news:10ub4megeu6a9ad@corp.supernews.com...
> Honda has a new engine that uses the
> Atcheson & Topeka cycle (or something like that).
>
> How is the fuel mixed with the air?
> What happens when the air/fuel is being forced out
> of the cylinder before the intake valve closes?
>
> That is what happens, isn't it?

"Joseph Wind" <jpg@gif.com> wrote in message
news:LFIFd.17110$F97.14913@trnddc06...
> Is that the engine that runs on only 2 cylinders when the RPMs are
> constant,
> like in highway speeds? I read that a while back, seemed interesting,
> actually it was printed in a Japanese auto magazine that a friend
> translated
> to me. Sort of the 4-6-8 engine developed by GM in the 70s, or was that
> the
> 8-6-4? But I digressed.
>
I remember that (although IIRC it was a 4-8 or 8-4). I don't know if it ever
made it into production, though. In any event it faded away, and I never
knew why.

Mike

No, it's entirely different.

I changes the valve timing and substantiall increases the
compression ratio.

Joseph Wind wrote:
> Is that the engine that runs on only 2 cylinders when the RPMs are constant,
> like in highway speeds? I read that a while back, seemed interesting,
> actually it was printed in a Japanese auto magazine that a friend translated
> to me. Sort of the 4-6-8 engine developed by GM in the 70s, or was that the
> 8-6-4? But I digressed.
>
> I think the ECU shuts off the injector to the unused cylinders, also the
> valves are frozen using the same technology of V-Tech, but in reverse.
> Supposed the engine gets about 25km/l which equates to about 60mpg.
>
>
> "Al" <ecarecar@yahoo.com> wrote in message
> news:10ub4megeu6a9ad@corp.supernews.com...
>
>>Honda has a new engine that uses the
>>Atcheson & Topeka cycle (or something like that).
>>
>>How is the fuel mixed with the air?
>>What happens when the air/fuel is being forced out
>>of the cylinder before the intake valve closes?
>>
>>That is what happens, isn't it?
>
>
>

On Fri, 14 Jan 2005 05:04:02 -0700, "Michael Pardee"
<michaeltnull@cybertrails.com> wrote:

>"Joseph Wind" <jpg@gif.com> wrote in message
>news:LFIFd.17110$F97.14913@trnddc06...
>> Is that the engine that runs on only 2 cylinders when the RPMs are
>> constant,
>> like in highway speeds? I read that a while back, seemed interesting,
>> actually it was printed in a Japanese auto magazine that a friend
>> translated
>> to me. Sort of the 4-6-8 engine developed by GM in the 70s, or was that
>> the
>> 8-6-4? But I digressed.
>>
>I remember that (although IIRC it was a 4-8 or 8-4). I don't know if it ever
>made it into production, though. In any event it faded away, and I never
>knew why.

Such an engine is in the Chrysler C300 - at least in the UK.Runs on 4
most of the time, and 8 when you need it.

>
>Mike
>

On Fri, 14 Jan 2005 05:04:02 -0700, "Michael Pardee"
<michaeltnull@cybertrails.com> wrote:
>"Joseph Wind" <jpg@gif.com> wrote in message
>news:LFIFd.17110$F97.14913@trnddc06...
>> Is that the engine that runs on only 2 cylinders when the RPMs are
>> constant,
>> like in highway speeds? I read that a while back, seemed interesting,
>> actually it was printed in a Japanese auto magazine that a friend
>> translated
>> to me. Sort of the 4-6-8 engine developed by GM in the 70s, or was that
>> the
>> 8-6-4? But I digressed.
>>
>I remember that (although IIRC it was a 4-8 or 8-4). I don't know if it ever
>made it into production, though. In any event it faded away, and I never
>knew why.

8-6-4, Cadillac, died an ignominious death, very crude control
electronics.

I think the concept has been revived and implemented by M-B, if not
others.

Harold Adrian Russell Philby wrote:
>
> On Fri, 14 Jan 2005 05:04:02 -0700, "Michael Pardee"
> <michaeltnull@cybertrails.com> wrote:
> >"Joseph Wind" <jpg@gif.com> wrote in message
> >news:LFIFd.17110$F97.14913@trnddc06...
> >> Is that the engine that runs on only 2 cylinders when the RPMs are
> >> constant,
> >> like in highway speeds? I read that a while back, seemed interesting,
> >> actually it was printed in a Japanese auto magazine that a friend
> >> translated
> >> to me. Sort of the 4-6-8 engine developed by GM in the 70s, or was that
> >> the
> >> 8-6-4? But I digressed.
> >>
> >I remember that (although IIRC it was a 4-8 or 8-4). I don't know if it ever
> >made it into production, though. In any event it faded away, and I never
> >knew why.
>
> 8-6-4, Cadillac, died an ignominious death, very crude control
> electronics.
>
> I think the concept has been revived and implemented by M-B, if not
> others.

Yes, Daimler-Chrysler is using it in their Mercedes, Dodge and Chrysler
brands. Honda is using it as well in some of their V6 engines. For more,
Google for "Cylinder deactivation"

"Randolph" <trash@junkmail.com> wrote in message
news:41E82F59.B6465F5B@junkmail.com...
>
> Yes, Daimler-Chrysler is using it in their Mercedes, Dodge and Chrysler
> brands. Honda is using it as well in some of their V6 engines. For more,
> Google for "Cylinder deactivation"

Ah, I've had lots of cars with Automatic Cylinder Deactivation. Most of the
time it was all cylinders or random cylinders, though.

Mike