Rant alert..Improper use of engineering terms
#62
10-22-2010, 09:21 PM
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[quote=rizzo;7444039]So let me get this straight, when the mass exceeds the maximum bending moment and the modulus of elasticity has been exceeded resulting in permemant deformation, what type of failure is it ?[/quote
Busted.
Busted.
#64
10-22-2010, 09:27 PM
So you're counting grade school? I don't know where you got your education, but my fourth grade English teacher would have given your post a D-. As long as I can understand what someone is saying I don't care about their spelling and grammar, just don't be bragging about education.
Last edited by nevil; 10-22-2010 at 09:48 PM.
#65
10-22-2010, 09:58 PM
Seasoned HDF Member
Ed Norton said it best. "The armature sprocket is causing interference; which, in turn, causes the combustion line to interfere with the flow in the Dynaflow.
The Honeymooners
Hey wasn't Norton a "subterranean engineer"
The Honeymooners
Hey wasn't Norton a "subterranean engineer"
#66
10-22-2010, 10:27 PM
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So........... before you eat X-lax, you call it a "Torque Multiplier".
After you have your big dump of the day, Is it a transmission again?
sounds like **** retention disorder, go have yourself a poop O.P, No one here is out to impress anyone. were just here because we share a common interest!
hatch.
After you have your big dump of the day, Is it a transmission again?
sounds like **** retention disorder, go have yourself a poop O.P, No one here is out to impress anyone. were just here because we share a common interest!
hatch.
#68
10-22-2010, 10:41 PM
Stellar HDF Member
I can easly accect poor spelling and grammer. ( I'm guilty of both without the use of spell check.)
I do however CRINGE when folks insist on using or improperly using real engineering "defined" terms.
Prehaps we can all agree on what certain TERMS really define.
If percise definition of terms doesn't bother you, you might wish to quit reading now..
Spark Knock!
There is no predetonation! term (predetonation is the condition that exsists BEFORE detonation OR normal operation!)
Detonation is KNOCK or PING and makes noise as the end gases explode before the burn is complete.i.e. End of combustion!
The OTHER term some are looking for is
PREIGNITION ! That is silent and is the lighting of a fresh charge of fuel before a spark event and will very quickly burn a HOLE in whatever melts first! Normally the piston dome!
Predetonation is exactly how an engine is designed to FUNCTION!
(before detonation!)
TORQUE AND HP.
Hp exsists in the presence of torque. Too many folks try to define the difference between TORQUE and HP.
Torque is the measure of rotational force! As in dynamometer output. That output is DIRECTLY ( as in the math sense of DIRECT relationships) related to HP. Torque is MEASURED directly.
HP is a define measure of HOW MUCH WORK can be done. ( a calculation from TORQUE at any given RPM ..)
When you MEASURE Torque, you can alway derive how much HP is being generated. They are not mutually exclusive as some folks seem to think or wish to define their function!
The Shape of a Torque curve explains how an engine will accelerate and product HP.
I often see the over simplification of Torque produces accelerationa and HP defines top speed. The fact is if a vehicle is accelerating HP (work is being accomplished) and Torque (rotational force that can be meaured) allows us to know how much WORK is being done at any given speed.
End of rant..Thanks for listening
I do however CRINGE when folks insist on using or improperly using real engineering "defined" terms.
Prehaps we can all agree on what certain TERMS really define.
If percise definition of terms doesn't bother you, you might wish to quit reading now..
Spark Knock!
There is no predetonation! term (predetonation is the condition that exsists BEFORE detonation OR normal operation!)
Detonation is KNOCK or PING and makes noise as the end gases explode before the burn is complete.i.e. End of combustion!
The OTHER term some are looking for is
PREIGNITION ! That is silent and is the lighting of a fresh charge of fuel before a spark event and will very quickly burn a HOLE in whatever melts first! Normally the piston dome!
Predetonation is exactly how an engine is designed to FUNCTION!
(before detonation!)
TORQUE AND HP.
Hp exsists in the presence of torque. Too many folks try to define the difference between TORQUE and HP.
Torque is the measure of rotational force! As in dynamometer output. That output is DIRECTLY ( as in the math sense of DIRECT relationships) related to HP. Torque is MEASURED directly.
HP is a define measure of HOW MUCH WORK can be done. ( a calculation from TORQUE at any given RPM ..)
When you MEASURE Torque, you can alway derive how much HP is being generated. They are not mutually exclusive as some folks seem to think or wish to define their function!
The Shape of a Torque curve explains how an engine will accelerate and product HP.
I often see the over simplification of Torque produces accelerationa and HP defines top speed. The fact is if a vehicle is accelerating HP (work is being accomplished) and Torque (rotational force that can be meaured) allows us to know how much WORK is being done at any given speed.
End of rant..Thanks for listening
Here is some suggested reading.
This is a High School / Community College textbook: Jack Erjavec (2005). Automotive technology: a systems approach. Cengage Learning. p. 630. ISBN 1401848311.
H.N. Gupta (2006). Fundamentals of Internal Combustion Engines. PHI Learning. pp. 169–173. ISBN 812032854X.
Daniel Hall (2007). Automotive Engineering. Global Media. p. 32. ISBN 8190457500.
Barry Hollembeak (2004). Automotive fuels & emissions. Cengage Learning. p. 165. ISBN 1401839045
Engine Basics: Detonation and Pre-Ignition by Allen W. Cline Accessed June 2007
Charles Fayette Taylor, Internal Combustion Engine in Theory and Practice: Vol. 2, Revised Edition, MIT Press, 1985, Chapter 2 on "Detonation and Preignition", pp 34–85. ISBN 0-262-20052-X
#69
10-22-2010, 10:45 PM
Stellar HDF Member
It's been stretched or compressed so much that when you release it, it does not return to it's original shape . . . it's elastic limit has been exceeded.