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#11
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o and io engines
I went through my post. No, I didn't say that.
Karl "Curator" N185KG "Robert M. Gary" wrote in message oups.com... And slightly less fuel burn than if it had a carburetor, just as Doug said! I'm not following. You're saying 10 gal/hr is less than 9 gal/hr? -Robert |
#12
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o and io engines
I went through my post. No, I didn't say that.
Ok, I'm still confused. The O-360 engine puts out 180hp on 9gal hr. The IO-360 puts out 200 hp on 10 gal/hr. The difference between the two is just that that IO-360 is fuel injected. So how is it that you can say "And slightly less fuel burn than if it had a carburetor". That certainly doesn't seem to be the case here. -Robert |
#13
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o and io engines
Robert M. Gary wrote:
I went through my post. No, I didn't say that. Ok, I'm still confused. The O-360 engine puts out 180hp on 9gal hr. The IO-360 puts out 200 hp on 10 gal/hr. The difference between the two is just that that IO-360 is fuel injected. So how is it that you can say "And slightly less fuel burn than if it had a carburetor". That certainly doesn't seem to be the case here. I gave up trying to get Karl to clarify anything long back with "Vx is a clean wing". Don't try to be literal with him. He speaks in loose metaphors and allegory. |
#14
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o and io engines
Robert,
There are many, many, (over 100) variants of the Lycoming 360 engine. Your confusion stems from your belief that you just strap FI on an O-360 and it makes it a IO-360. In fact ALL the 200 HP IO-360 engines have a higher compression ratio, unless they are turbo-charged. That is the primary reason for the extra 20 HP. Fuel injection, (even lowly port injection like on our engines) is more efficient than a carburetor. Thus for the same power output they do so at a lower fuel burn. That is one of the primary reasons to FI an engine. For your amusement, surf this: http://www.lycoming.textron.com/prod...ons/SSP204.pdf Karl "Curator" N185KG "Robert M. Gary" wrote in message ups.com... I went through my post. No, I didn't say that. Ok, I'm still confused. The O-360 engine puts out 180hp on 9gal hr. The IO-360 puts out 200 hp on 10 gal/hr. The difference between the two is just that that IO-360 is fuel injected. So how is it that you can say "And slightly less fuel burn than if it had a carburetor". That certainly doesn't seem to be the case here. -Robert |
#15
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o and io engines
Dave,
I understand you "gave up" on understanding Vx. That's unfortunate, and could cause you grief if you ever need to climb at that speed. Vx, for all common light aircraft, is a clean wing speed. (NO FLAPS) What is difficult to understand about that? Karl "Curator" N185KG "Dave Butler" wrote in message news:1146834825.510189@sj-nntpcache-5... Robert M. Gary wrote: I went through my post. No, I didn't say that. Ok, I'm still confused. The O-360 engine puts out 180hp on 9gal hr. The IO-360 puts out 200 hp on 10 gal/hr. The difference between the two is just that that IO-360 is fuel injected. So how is it that you can say "And slightly less fuel burn than if it had a carburetor". That certainly doesn't seem to be the case here. I gave up trying to get Karl to clarify anything long back with "Vx is a clean wing". Don't try to be literal with him. He speaks in loose metaphors and allegory. |
#16
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o and io engines
karl gruber wrote:
Dave, I understand you "gave up" on understanding Vx. That's unfortunate, and could cause you grief if you ever need to climb at that speed. Vx, for all common light aircraft, is a clean wing speed. (NO FLAPS) What is difficult to understand about that? Nothing. Why didn't you say so? I didn't give up on understanding Vx, I gave up trying to get you to explain what you were talking about. I'm happy to learn that you are capable of writing clear, plain, complete, expository sentences. Dave |
#17
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o and io engines
Fuel injection, (even lowly port injection like on our engines) is more
efficient than a carburetor. Thus for the same power output they do so at a lower fuel burn. That is one of the primary reasons to FI an engine Interesting. Whatever the difference it must be pretty small. In the end the plane will have a cruise fuel burn darn near 5% of its horsepower, carb or FI. -Robert |
#18
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o and io engines
It appears the 200 HP injected engines all have tuned induction systems
for a little more power, too. And isn't here some point where they use the angle valve cylinders to get a better combustion chamber shape? I couldn't spot it though. An interesting list. Think of the documentation there must be at Lycoming to support this many certified engines! |
#19
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o and io engines
On 6 May 2006 11:35:19 -0700, "nrp" wrote:
It appears the 200 HP injected engines all have tuned induction systems for a little more power, too. And isn't here some point where they use the angle valve cylinders to get a better combustion chamber shape? I couldn't spot it though. A 180 hp O-360 Lycoming has parallel valves, the 200 hp IO-360 has angle valves. With the 540's the typical cut-off for parallel valve heads is 250 hp. An interesting list. Think of the documentation there must be at Lycoming to support this many certified engines! Indeed. TC |
#20
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o and io engines
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