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paul(at)eucleides.com
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 Posted: Sat Nov 22, 2008 3:58 pm Post subject: EJ 22 |
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On Sat, November 22, 2008 3:27 pm, Francisco Drovetta wrote:
| Quote: |
Hi
Subaru engine was created for cars.Continental O200 for airplanes.
This engine (Cont O200) is very reliable, safe and like a swiss watch.
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That's certainly true but none-the-less it is an impressive engine. Check out the
section for the EJ22 series:
<http://en.wikipedia.org/wiki/Subaru_EJ_engine#EJ22>
It is highly refined. There are a number of variants including turbo-charged versions.
The SLA (solid lifters) require no valve train service for 100,000 miles. It has
molybdenum coated piston skirts and the wrist pin is set off center to reduce
friction.
--
Paul A. Franz (one for uniform whiskey)
Aircraft/Engine/Prop - Merlin GT N14UW/Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
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Lynn Matteson
Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
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| Posted: Sat Nov 22, 2008 4:55 pm Post subject: EJ 22 |
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It seems like a long time ago, I read that the piston pin offset (at
the time of that writing) was to set the con rod at a more
appropriate angle for the impending power stroke. As I recall, it
made for a smoother transition from the piston going up, to the
piston going down. Possibly reducing friction could have also been a
benefit way back then as well.
Hey, Paul, how can we have "uniform whiskey" when we can't even agree
on a "uniform" engine to use? : )
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, 591hrs
Sensenich 62x46
flying again after rebuild, and new Electroair direct-fire ignition
system
On Nov 22, 2008, at 6:57 PM, Paul Franz wrote:
| Quote: |
On Sat, November 22, 2008 3:27 pm, Francisco Drovetta wrote:
>
> <dcubj3(at)terra.com.br>
>
> Hi
> Subaru engine was created for cars.Continental O200 for airplanes.
> This engine (Cont O200) is very reliable, safe and like a swiss
> watch.
That's certainly true but none-the-less it is an impressive engine.
Check out the
section for the EJ22 series:
<http://en.wikipedia.org/wiki/Subaru_EJ_engine#EJ22>
It is highly refined. There are a number of variants including
turbo-charged versions.
The SLA (solid lifters) require no valve train service for 100,000
miles. It has
molybdenum coated piston skirts and the wrist pin is set off center
to reduce
friction.
--
Paul A. Franz (one for uniform whiskey)
Aircraft/Engine/Prop - Merlin GT N14UW/Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
|
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_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM |
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MichaelGibbs(at)cox.net
Guest
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| Posted: Sat Nov 22, 2008 5:24 pm Post subject: EJ 22 |
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| Quote: |
On Sat, November 22, 2008 3:27 pm, Francisco Drovetta wrote:
>
> >
>
> Hi
> Subaru engine was created for cars.Continental O200 for airplanes.
> This engine (Cont O200) is very reliable, and safe...
That's certainly true...
|
I don't think it is. I believe these engines are derivatives of
Japanese aircraft engines designed during or after world war II that
were later adapted for use in cars. It's not a coincidence that they
have horizontally opposed cylinders.
Mike G.
N728KF, Kitfox IV-1200 Speedster
Phoenix, AZ
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paul(at)eucleides.com
Guest
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| Posted: Sat Nov 22, 2008 5:45 pm Post subject: EJ 22 |
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On Sat, November 22, 2008 4:55 pm, Lynn Matteson wrote:
| Quote: |
It seems like a long time ago, I read that the piston pin offset (at
the time of that writing) was to set the con rod at a more
appropriate angle for the impending power stroke. As I recall, it
made for a smoother transition from the piston going up, to the
piston going down. Possibly reducing friction could have also been a
benefit way back then as well.
|
In the wiki article, they mentioned that the offset was changed 0.5 mm. They also
rised the compression ratio to 9.7 and 10.0 and they altered the valve angles
increasing the exhaust to 23 deg and the intakes to 20 deg from their previous setting
of 15 for both. They have dual overhead rocker shafts with constant contact roller
lifters. There's 10% greater horsepower and 3% greater fuel economy. The improvement
list is pretty long and always getting better.
The certified engine, costs what? $24k now? That whole Subaru car with the EJ22 didn't
cost that much. I think a good portion of the $24k is going to product liability
insurance and not improvements in technology. In fact, the hurdle of certification,
makes change expensive.
| Quote: |
Hey, Paul, how can we have "uniform whiskey" when we can't even agree
on a "uniform" engine to use? : )
|
I am a Univ of Wash (UW) alumnus and I thought it sounds clever to read off my N
number to ATC as "one four uniform wisskey".
| Quote: | > Check out the section for the EJ22 series:
>
> <http://en.wikipedia.org/wiki/Subaru_EJ_engine#EJ22>
|
--
Paul A. Franz
Aircraft/Engine/Prop - Merlin GT N14UW/Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
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lcfitt(at)sbcglobal.net
Guest
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| Posted: Sat Nov 22, 2008 6:09 pm Post subject: EJ 22 |
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Thanks Mike,
This is my understanding as well.
Lowell Fitt
Cameron Park, CA
Model IV-1200 R-912 UL
Currently focusing on the Left Wing, Rudder Gap Seal Cuffs and Landing Gear
Fairing (still)
---
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paul(at)eucleides.com
Guest
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| Posted: Sat Nov 22, 2008 6:21 pm Post subject: EJ 22 |
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On Sat, November 22, 2008 5:23 pm, Michael Gibbs wrote:
| Quote: |
>
>
> On Sat, November 22, 2008 3:27 pm, Francisco Drovetta wrote:
>>
>> >
>>
>> Hi
>> Subaru engine was created for cars.Continental O200 for airplanes.
>> This engine (Cont O200) is very reliable, and safe...
>
> That's certainly true...
I don't think it is. I believe these engines are derivatives of
Japanese aircraft engines designed during or after world war II that
were later adapted for use in cars. It's not a coincidence that they
have horizontally opposed cylinders.
|
I've heard that said before too however the wiki article says:
"The Subaru EJ engine is a series of automotive engines manufactured by Subaru, a
division of Fuji Heavy Industries introduced mid 1989 for the 1st generation Legacy.
The engine was designed by Masayuki Kodama, Takemasa Yamada and Shuji Sawafuji of FHI
Ltd. Engines of this series are 16 valve flat-4 horizontal, with configurations
available for SOHC and DOHC, natural aspiration and turbocharged."
--
Paul A. Franz
Aircraft/Engine/Prop - Merlin GT/Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
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MichaelGibbs(at)cox.net
Guest
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| Posted: Sat Nov 22, 2008 6:49 pm Post subject: EJ 22 |
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The EA 81 has, perhaps, a more direct lineage from the original
aircraft engines. There have been a number of derivatives since then.
Mike G.
N728KF, Kitfox IV-1200 Speedster
Phoenix, AZ
On Nov 22, 2008, at 7:21 PM, "Paul Franz" <paul(at)eucleides.com> wrote:
| Quote: |
On Sat, November 22, 2008 5:23 pm, Michael Gibbs wrote:
>
> >
>
>>
>>
>> On Sat, November 22, 2008 3:27 pm, Francisco Drovetta wrote:
>>>
>>>>
>>>
>>> Hi
>>> Subaru engine was created for cars.Continental O200 for airplanes.
>>> This engine (Cont O200) is very reliable, and safe...
>>
>> That's certainly true...
>
> I don't think it is. I believe these engines are derivatives of
> Japanese aircraft engines designed during or after world war II that
> were later adapted for use in cars. It's not a coincidence that they
> have horizontally opposed cylinders.
I've heard that said before too however the wiki article says:
"The Subaru EJ engine is a series of automotive engines manufactured
by Subaru, a
division of Fuji Heavy Industries introduced mid 1989 for the 1st
generation Legacy.
The engine was designed by Masayuki Kodama, Takemasa Yamada and
Shuji Sawafuji of FHI
Ltd. Engines of this series are 16 valve flat-4 horizontal, with
configurations
available for SOHC and DOHC, natural aspiration and turbocharged."
--
Paul A. Franz
Aircraft/Engine/Prop - Merlin GT/Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
|
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http://www.matronics.com/Navigator?Kitfox-List |
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paul(at)eucleides.com
Guest
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| Posted: Sat Nov 22, 2008 7:51 pm Post subject: EJ 22 |
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On Sat, November 22, 2008 6:49 pm, Michael Gibbs wrote:
| Quote: |
The EA 81 has, perhaps, a more direct lineage from the original
aircraft engines. There have been a number of derivatives since then.
|
Here's some authoritative history:
The Origins of Fuji Heavy Industries: Subaru’s Parent
Today, the name Subaru is synonymous with the car brand’s current slogan; “The Beauty
of All Wheel Drive.” Yet one might be surprised to find out that Subaru’s roots trace
back to Fuji Heavy Industries predecessor, Nakajima Aircraft. Nakajima, the man who
founded the company that bore his name, caught news of the Wright Brothers successful
first flight while he was enrolled in the Japanese navy and soon thereafter became
involved in building airplanes for his country’s military. Eventually, Nakajima left
the military to found Nakajima Aircraft Co, Ltd, which would eventually become Japan’s
primary aircraft manufacturer.
However, once World War II had ended and aircraft production could no longer continue,
the company was faced with a predicament. The name was changed to Fuji Sangyo Co. and
a new focus was begun in an effort to use their aircraft technologies in other fields.
Fuji Sangyo soon entered small markets that eventually led it to the automotive
business. However in 1950, a corporate credit rearrangement law forced Fuji Sangyo to
split into 12 separate companies including Fuji Heavy Industries Ltd. Over a period of
two years, various investors merged to form the currently known Fuji Heavy Industries
(FHI).FHI’s First Car & The Beginning of Subaru
As FHI was trying to expand their market’s and utilize their experience in the
aircraft field, they created their first prototype car which was announced in February
1954, the P-1. The car featured the first monocoque body manufactured in Japan.
Kenji Kita, FHI’s first president, was adamant that “Japanese cars should have
Japanese names” and was very passionate about this in regards to this prototype P-1.
While Kita had looked for idea’s to name the car, he settled on a name he had been
secretly wanting: Subaru.
Subaru is a star cluster in the Taurus constellation that are familiar to some as the
Pleiades. The star cluster is most noticeable by the six star pattern, also known as
mustura-boshi, which can be found represented in today’s Subaru logo.
Now that Kenji Kita had established a name, the P-1 was officially called the Subaru
1500. While this car represented FHI (and now Subaru’s) move into the automotive
segment, they failed to maintain sales due to insufficient funding and sales network.
Read more here:
<http://www.subdriven.com/news/publish/Features/article_237.shtml>
--
Paul A. Franz
Aircraft/Engine/Prop - Merlin GT N14UW/Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
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