Strength Of Factory Blocks
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Originally Posted by Travis R' date='Oct 16 2003, 10:27 AM
OK apparently there is a graph of what you are asking on page 454 of John Heywood's book "Internal Combustion Engine Fundamentals". We should have a copy of it at the shop. So I'll take a look tonight. They are probably for non-turbo piston engines though.
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From: NJ
Originally Posted by MaTT_FoULk' date='Oct 17 2003, 04:47 AM
That has what to do with the topic at hand?
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From: Grand Prairie, TX
Originally Posted by Travis R' date='Oct 17 2003, 04:56 AM
The book I mentioned wasn't down at the shop. Sorry I couldn't come up with numbers.
But a friend of mine brought up the point that there is only so much energy available because of the fuel. So assuming that you are getting a complete burn in your normal combustion cycle, the max chamber pressure should be the same as it is when it auto-ignites (detonation). The difference is that the auto-ignition will have a very rapid spike to that pressure, and the "normal" cycle will have a (relatively) longer build up to that pressure.
That's just talk though. Data from the book could tell us something else.
But a friend of mine brought up the point that there is only so much energy available because of the fuel. So assuming that you are getting a complete burn in your normal combustion cycle, the max chamber pressure should be the same as it is when it auto-ignites (detonation). The difference is that the auto-ignition will have a very rapid spike to that pressure, and the "normal" cycle will have a (relatively) longer build up to that pressure.
That's just talk though. Data from the book could tell us something else.
B
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Posts: 917
From: Grand Prairie, TX
Originally Posted by Hassan' date='Oct 17 2003, 06:56 AM
[quote name='j9fd3s' date='Oct 16 2003, 10:11 AM'] ah ok, so you know how fc's always have 1 borken engine mount? and its always the same one? i think when you drop the clutch it tries to twist the motor, too much twist = broken rear plate.
mike
mike
Well we are now using solid motor mounts on our cars (Mine and 87GTRs) [/quote]
Same with me and mine never broke, either. Interesting. Maybe there's something involving torsional vibration here or some other field of physics that's well above my pay grade.
On another note, I believe one reason why the passenger side mount disintegrates and breaks is because it's directly next to the turbocharger which radiates gobs and gobs of heat.
B
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Joined: May 2002
Posts: 22,465
From: California
Originally Posted by Travis R' date='Oct 17 2003, 04:56 AM
The book I mentioned wasn't down at the shop. Sorry I couldn't come up with numbers.
But a friend of mine brought up the point that there is only so much energy available because of the fuel. So assuming that you are getting a complete burn in your normal combustion cycle, the max chamber pressure should be the same as it is when it auto-ignites (detonation). The difference is that the auto-ignition will have a very rapid spike to that pressure, and the "normal" cycle will have a (relatively) longer build up to that pressure.
That's just talk though. Data from the book could tell us something else.
But a friend of mine brought up the point that there is only so much energy available because of the fuel. So assuming that you are getting a complete burn in your normal combustion cycle, the max chamber pressure should be the same as it is when it auto-ignites (detonation). The difference is that the auto-ignition will have a very rapid spike to that pressure, and the "normal" cycle will have a (relatively) longer build up to that pressure.
That's just talk though. Data from the book could tell us something else.
mike
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Joined: Jun 2003
Posts: 917
From: Grand Prairie, TX
Originally Posted by j9fd3s' date='Oct 17 2003, 10:52 AM
[quote name='Travis R' date='Oct 17 2003, 04:56 AM'] The book I mentioned wasn't down at the shop. Sorry I couldn't come up with numbers.
But a friend of mine brought up the point that there is only so much energy available because of the fuel. So assuming that you are getting a complete burn in your normal combustion cycle, the max chamber pressure should be the same as it is when it auto-ignites (detonation). The difference is that the auto-ignition will have a very rapid spike to that pressure, and the "normal" cycle will have a (relatively) longer build up to that pressure.
That's just talk though. Data from the book could tell us something else.
But a friend of mine brought up the point that there is only so much energy available because of the fuel. So assuming that you are getting a complete burn in your normal combustion cycle, the max chamber pressure should be the same as it is when it auto-ignites (detonation). The difference is that the auto-ignition will have a very rapid spike to that pressure, and the "normal" cycle will have a (relatively) longer build up to that pressure.
That's just talk though. Data from the book could tell us something else.
mike [/quote]
Shockwave?
B
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Joined: May 2002
Posts: 22,465
From: California
Originally Posted by BDC' date='Oct 17 2003, 11:05 AM
[quote name='j9fd3s' date='Oct 17 2003, 10:52 AM'] [quote name='Travis R' date='Oct 17 2003, 04:56 AM'] The book I mentioned wasn't down at the shop. Sorry I couldn't come up with numbers.
But a friend of mine brought up the point that there is only so much energy available because of the fuel. So assuming that you are getting a complete burn in your normal combustion cycle, the max chamber pressure should be the same as it is when it auto-ignites (detonation). The difference is that the auto-ignition will have a very rapid spike to that pressure, and the "normal" cycle will have a (relatively) longer build up to that pressure.
That's just talk though. Data from the book could tell us something else.
But a friend of mine brought up the point that there is only so much energy available because of the fuel. So assuming that you are getting a complete burn in your normal combustion cycle, the max chamber pressure should be the same as it is when it auto-ignites (detonation). The difference is that the auto-ignition will have a very rapid spike to that pressure, and the "normal" cycle will have a (relatively) longer build up to that pressure.
That's just talk though. Data from the book could tell us something else.
mike [/quote]
Shockwave?
B [/quote]
yah its the difference between a controlled burn and and explosion
mike
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Joined: Jan 2003
Posts: 2,871
From: London, Ontario
Flame front during detonation moves much faster than regular combustion, hence shock wave.
Combustion is a very fast burn VS detonation which is closer to an explosion. Like gunpower VS TNT.
EDIT: Mike types MaD QUick yO!
Combustion is a very fast burn VS detonation which is closer to an explosion. Like gunpower VS TNT.
EDIT: Mike types MaD QUick yO!
