Gasoline
#31
Guest
Posts: n/a
Re: Gasoline
As usual you're totally wrong once again.
"Pinging" is only a vulgar form of addressing the technical word
"Detonation". I'm not surprised that you only knew the vulgar form, given
your poor education.
What really surprises me, and in all probability everyone in this newsgroup,
is how on earth you might ever have managed to be a petroleum chemist
without this knowledge. Then again you wrote "former". I guess that was just
a case history of redundancy? LOL
Pinging is just a poor attempt at simply describing the metallic noise the
engine makes when there are instances of detonation. Knocking is yet another
way of describing this.
Collins English Dictionary definition for "ping":
1.- a short high-pitched resonant sound, as of a bullet striking metal or a
sonar echo.
I suggest you read this, just in case you want to seek a new job in the
Petroleum Industry of the Uneducated:
http://www.answers.com/topic/engine-knocking
Engine knocking
Knocking (also called pinking or pinging)-technically detonation- in
internal combustion engines occurs when fuel in the cylinder is ignited by
the firing of the spark plug and smooth burning proceeds but some of the
unburned mixture in the combustion chamber explodes before the flame front
can reach it, combusting suddenly before the optimum moment of the
four-stroke cycle. The resulting shockwave collides with the rising piston,
creating a characteristic metallic "pinging" sound.
Anyway, why bother to answer any of your low posting again?
<gcmschemist@gmail.com>news:1119467145.503005.8427 0@o13g2000cwo.googlegroups.com...
>
>
> JP Roberts wrote:
>>
>> The Octane number is just a measure of how easily the fuel will
>> self-ignite,
>
>
> Bzzzt.
>
> Octane number is measure of the fuel's resistance to *detonation.*
> Self-ignition is called "ping", and that's something different.
>
> Turbomotors should use the highest available octane fuel, due to
> effective compression ratio and charge temperature. 98 RON or better.
>
> E.P. (former petroleum chemist)
>
"Pinging" is only a vulgar form of addressing the technical word
"Detonation". I'm not surprised that you only knew the vulgar form, given
your poor education.
What really surprises me, and in all probability everyone in this newsgroup,
is how on earth you might ever have managed to be a petroleum chemist
without this knowledge. Then again you wrote "former". I guess that was just
a case history of redundancy? LOL
Pinging is just a poor attempt at simply describing the metallic noise the
engine makes when there are instances of detonation. Knocking is yet another
way of describing this.
Collins English Dictionary definition for "ping":
1.- a short high-pitched resonant sound, as of a bullet striking metal or a
sonar echo.
I suggest you read this, just in case you want to seek a new job in the
Petroleum Industry of the Uneducated:
http://www.answers.com/topic/engine-knocking
Engine knocking
Knocking (also called pinking or pinging)-technically detonation- in
internal combustion engines occurs when fuel in the cylinder is ignited by
the firing of the spark plug and smooth burning proceeds but some of the
unburned mixture in the combustion chamber explodes before the flame front
can reach it, combusting suddenly before the optimum moment of the
four-stroke cycle. The resulting shockwave collides with the rising piston,
creating a characteristic metallic "pinging" sound.
Anyway, why bother to answer any of your low posting again?
<gcmschemist@gmail.com>news:1119467145.503005.8427 0@o13g2000cwo.googlegroups.com...
>
>
> JP Roberts wrote:
>>
>> The Octane number is just a measure of how easily the fuel will
>> self-ignite,
>
>
> Bzzzt.
>
> Octane number is measure of the fuel's resistance to *detonation.*
> Self-ignition is called "ping", and that's something different.
>
> Turbomotors should use the highest available octane fuel, due to
> effective compression ratio and charge temperature. 98 RON or better.
>
> E.P. (former petroleum chemist)
>
#32
Guest
Posts: n/a
Re: Gasoline
As usual you're totally wrong once again.
"Pinging" is only a vulgar form of addressing the technical word
"Detonation". I'm not surprised that you only knew the vulgar form, given
your poor education.
What really surprises me, and in all probability everyone in this newsgroup,
is how on earth you might ever have managed to be a petroleum chemist
without this knowledge. Then again you wrote "former". I guess that was just
a case history of redundancy? LOL
Pinging is just a poor attempt at simply describing the metallic noise the
engine makes when there are instances of detonation. Knocking is yet another
way of describing this.
Collins English Dictionary definition for "ping":
1.- a short high-pitched resonant sound, as of a bullet striking metal or a
sonar echo.
I suggest you read this, just in case you want to seek a new job in the
Petroleum Industry of the Uneducated:
http://www.answers.com/topic/engine-knocking
Engine knocking
Knocking (also called pinking or pinging)-technically detonation- in
internal combustion engines occurs when fuel in the cylinder is ignited by
the firing of the spark plug and smooth burning proceeds but some of the
unburned mixture in the combustion chamber explodes before the flame front
can reach it, combusting suddenly before the optimum moment of the
four-stroke cycle. The resulting shockwave collides with the rising piston,
creating a characteristic metallic "pinging" sound.
Anyway, why bother to answer any of your low posting again?
<gcmschemist@gmail.com>news:1119467145.503005.8427 0@o13g2000cwo.googlegroups.com...
>
>
> JP Roberts wrote:
>>
>> The Octane number is just a measure of how easily the fuel will
>> self-ignite,
>
>
> Bzzzt.
>
> Octane number is measure of the fuel's resistance to *detonation.*
> Self-ignition is called "ping", and that's something different.
>
> Turbomotors should use the highest available octane fuel, due to
> effective compression ratio and charge temperature. 98 RON or better.
>
> E.P. (former petroleum chemist)
>
"Pinging" is only a vulgar form of addressing the technical word
"Detonation". I'm not surprised that you only knew the vulgar form, given
your poor education.
What really surprises me, and in all probability everyone in this newsgroup,
is how on earth you might ever have managed to be a petroleum chemist
without this knowledge. Then again you wrote "former". I guess that was just
a case history of redundancy? LOL
Pinging is just a poor attempt at simply describing the metallic noise the
engine makes when there are instances of detonation. Knocking is yet another
way of describing this.
Collins English Dictionary definition for "ping":
1.- a short high-pitched resonant sound, as of a bullet striking metal or a
sonar echo.
I suggest you read this, just in case you want to seek a new job in the
Petroleum Industry of the Uneducated:
http://www.answers.com/topic/engine-knocking
Engine knocking
Knocking (also called pinking or pinging)-technically detonation- in
internal combustion engines occurs when fuel in the cylinder is ignited by
the firing of the spark plug and smooth burning proceeds but some of the
unburned mixture in the combustion chamber explodes before the flame front
can reach it, combusting suddenly before the optimum moment of the
four-stroke cycle. The resulting shockwave collides with the rising piston,
creating a characteristic metallic "pinging" sound.
Anyway, why bother to answer any of your low posting again?
<gcmschemist@gmail.com>news:1119467145.503005.8427 0@o13g2000cwo.googlegroups.com...
>
>
> JP Roberts wrote:
>>
>> The Octane number is just a measure of how easily the fuel will
>> self-ignite,
>
>
> Bzzzt.
>
> Octane number is measure of the fuel's resistance to *detonation.*
> Self-ignition is called "ping", and that's something different.
>
> Turbomotors should use the highest available octane fuel, due to
> effective compression ratio and charge temperature. 98 RON or better.
>
> E.P. (former petroleum chemist)
>
#33
Guest
Posts: n/a
Re: Gasoline
As usual you're totally wrong once again.
"Pinging" is only a vulgar form of addressing the technical word
"Detonation". I'm not surprised that you only knew the vulgar form, given
your poor education.
What really surprises me, and in all probability everyone in this newsgroup,
is how on earth you might ever have managed to be a petroleum chemist
without this knowledge. Then again you wrote "former". I guess that was just
a case history of redundancy? LOL
Pinging is just a poor attempt at simply describing the metallic noise the
engine makes when there are instances of detonation. Knocking is yet another
way of describing this.
Collins English Dictionary definition for "ping":
1.- a short high-pitched resonant sound, as of a bullet striking metal or a
sonar echo.
I suggest you read this, just in case you want to seek a new job in the
Petroleum Industry of the Uneducated:
http://www.answers.com/topic/engine-knocking
Engine knocking
Knocking (also called pinking or pinging)-technically detonation- in
internal combustion engines occurs when fuel in the cylinder is ignited by
the firing of the spark plug and smooth burning proceeds but some of the
unburned mixture in the combustion chamber explodes before the flame front
can reach it, combusting suddenly before the optimum moment of the
four-stroke cycle. The resulting shockwave collides with the rising piston,
creating a characteristic metallic "pinging" sound.
Anyway, why bother to answer any of your low posting again?
<gcmschemist@gmail.com>news:1119467145.503005.8427 0@o13g2000cwo.googlegroups.com...
>
>
> JP Roberts wrote:
>>
>> The Octane number is just a measure of how easily the fuel will
>> self-ignite,
>
>
> Bzzzt.
>
> Octane number is measure of the fuel's resistance to *detonation.*
> Self-ignition is called "ping", and that's something different.
>
> Turbomotors should use the highest available octane fuel, due to
> effective compression ratio and charge temperature. 98 RON or better.
>
> E.P. (former petroleum chemist)
>
"Pinging" is only a vulgar form of addressing the technical word
"Detonation". I'm not surprised that you only knew the vulgar form, given
your poor education.
What really surprises me, and in all probability everyone in this newsgroup,
is how on earth you might ever have managed to be a petroleum chemist
without this knowledge. Then again you wrote "former". I guess that was just
a case history of redundancy? LOL
Pinging is just a poor attempt at simply describing the metallic noise the
engine makes when there are instances of detonation. Knocking is yet another
way of describing this.
Collins English Dictionary definition for "ping":
1.- a short high-pitched resonant sound, as of a bullet striking metal or a
sonar echo.
I suggest you read this, just in case you want to seek a new job in the
Petroleum Industry of the Uneducated:
http://www.answers.com/topic/engine-knocking
Engine knocking
Knocking (also called pinking or pinging)-technically detonation- in
internal combustion engines occurs when fuel in the cylinder is ignited by
the firing of the spark plug and smooth burning proceeds but some of the
unburned mixture in the combustion chamber explodes before the flame front
can reach it, combusting suddenly before the optimum moment of the
four-stroke cycle. The resulting shockwave collides with the rising piston,
creating a characteristic metallic "pinging" sound.
Anyway, why bother to answer any of your low posting again?
<gcmschemist@gmail.com>news:1119467145.503005.8427 0@o13g2000cwo.googlegroups.com...
>
>
> JP Roberts wrote:
>>
>> The Octane number is just a measure of how easily the fuel will
>> self-ignite,
>
>
> Bzzzt.
>
> Octane number is measure of the fuel's resistance to *detonation.*
> Self-ignition is called "ping", and that's something different.
>
> Turbomotors should use the highest available octane fuel, due to
> effective compression ratio and charge temperature. 98 RON or better.
>
> E.P. (former petroleum chemist)
>
#34
Guest
Posts: n/a
Re: Gasoline
JP Roberts wrote:
> As usual you're totally wrong once again.
LOL.
Here's where I am mistaken: calling "pinging" pre-ignition. That's
it.
Detonation and pre-ignition are different things, no matter what you
call them.
So, only in your self-important mind am I "totally wrong." I guess
you're still having difficulty extracting "fact" from "opinion." The
rest of your whiny rant is just the same ill-bred crap we've come to
expect from anti-Audi fools.
E.P. (at least I'm big enough to admit a mistake.)
#35
Guest
Posts: n/a
Re: Gasoline
JP Roberts wrote:
> As usual you're totally wrong once again.
LOL.
Here's where I am mistaken: calling "pinging" pre-ignition. That's
it.
Detonation and pre-ignition are different things, no matter what you
call them.
So, only in your self-important mind am I "totally wrong." I guess
you're still having difficulty extracting "fact" from "opinion." The
rest of your whiny rant is just the same ill-bred crap we've come to
expect from anti-Audi fools.
E.P. (at least I'm big enough to admit a mistake.)
#36
Guest
Posts: n/a
Re: Gasoline
JP Roberts wrote:
> As usual you're totally wrong once again.
LOL.
Here's where I am mistaken: calling "pinging" pre-ignition. That's
it.
Detonation and pre-ignition are different things, no matter what you
call them.
So, only in your self-important mind am I "totally wrong." I guess
you're still having difficulty extracting "fact" from "opinion." The
rest of your whiny rant is just the same ill-bred crap we've come to
expect from anti-Audi fools.
E.P. (at least I'm big enough to admit a mistake.)
#37
Guest
Posts: n/a
Re: Gasoline
JP Roberts wrote:
> As usual you're totally wrong once again.
LOL.
Here's where I am mistaken: calling "pinging" pre-ignition. That's
it.
Detonation and pre-ignition are different things, no matter what you
call them.
So, only in your self-important mind am I "totally wrong." I guess
you're still having difficulty extracting "fact" from "opinion." The
rest of your whiny rant is just the same ill-bred crap we've come to
expect from anti-Audi fools.
E.P. (at least I'm big enough to admit a mistake.)
#38
Guest
Posts: n/a
Re: Gasoline
> Obviously, because of less potential detonation problems. These are
> exacerbated by hot temperatures as the intercoolers in the early 1.8T are
> somewhat underengineered considering the demands of chipped cars. The net
> result is hotter air intake, which means the fuel mixture shows a tendency
> to self-ignite at the wrong times for the engine - read detonation
> translating into less power per time unit.
>
> The chips adjust the fuel-air-boost map to provide maximum efficiency, but
> they also advance ignition timing to the maximum bearable by the engine,
> given a particular temperature. The engine is possessed with two
> detonation sensors, and the moment the ECU detects any instance or this
> happening, it will delay ignition, thus providing less energy release per
> fuel unit - read power. The problem with this is that even if the ECU and
> sensors do a fine job, there always needs to be detonation for the system
> to delay timing - read the fewer the instances of detonation before the
> system acts the less stress on the engine in the long term.
>
> The Octane number is just a measure of how easily the fuel will
> self-ignite, therefore, the higher this number, the better the fuel in
> terms of lower detonation, which translates into lower consumption as the
> fuel is more efficiently burned because it is not being burned at the
> wrong times.
>
> JP Roberts
In this case it's a 2005 engine so the problem with early 1.8T intercoolers
probably does not apply.
The ECU may only be calibrated for 95 so putting in 98 would not cause the
ignition to be advance any further.
I doubt anyone could tell the difference between 95 and 98 in a blind test
in this particular car.
#39
Guest
Posts: n/a
Re: Gasoline
> Obviously, because of less potential detonation problems. These are
> exacerbated by hot temperatures as the intercoolers in the early 1.8T are
> somewhat underengineered considering the demands of chipped cars. The net
> result is hotter air intake, which means the fuel mixture shows a tendency
> to self-ignite at the wrong times for the engine - read detonation
> translating into less power per time unit.
>
> The chips adjust the fuel-air-boost map to provide maximum efficiency, but
> they also advance ignition timing to the maximum bearable by the engine,
> given a particular temperature. The engine is possessed with two
> detonation sensors, and the moment the ECU detects any instance or this
> happening, it will delay ignition, thus providing less energy release per
> fuel unit - read power. The problem with this is that even if the ECU and
> sensors do a fine job, there always needs to be detonation for the system
> to delay timing - read the fewer the instances of detonation before the
> system acts the less stress on the engine in the long term.
>
> The Octane number is just a measure of how easily the fuel will
> self-ignite, therefore, the higher this number, the better the fuel in
> terms of lower detonation, which translates into lower consumption as the
> fuel is more efficiently burned because it is not being burned at the
> wrong times.
>
> JP Roberts
In this case it's a 2005 engine so the problem with early 1.8T intercoolers
probably does not apply.
The ECU may only be calibrated for 95 so putting in 98 would not cause the
ignition to be advance any further.
I doubt anyone could tell the difference between 95 and 98 in a blind test
in this particular car.
#40
Guest
Posts: n/a
Re: Gasoline
> Obviously, because of less potential detonation problems. These are
> exacerbated by hot temperatures as the intercoolers in the early 1.8T are
> somewhat underengineered considering the demands of chipped cars. The net
> result is hotter air intake, which means the fuel mixture shows a tendency
> to self-ignite at the wrong times for the engine - read detonation
> translating into less power per time unit.
>
> The chips adjust the fuel-air-boost map to provide maximum efficiency, but
> they also advance ignition timing to the maximum bearable by the engine,
> given a particular temperature. The engine is possessed with two
> detonation sensors, and the moment the ECU detects any instance or this
> happening, it will delay ignition, thus providing less energy release per
> fuel unit - read power. The problem with this is that even if the ECU and
> sensors do a fine job, there always needs to be detonation for the system
> to delay timing - read the fewer the instances of detonation before the
> system acts the less stress on the engine in the long term.
>
> The Octane number is just a measure of how easily the fuel will
> self-ignite, therefore, the higher this number, the better the fuel in
> terms of lower detonation, which translates into lower consumption as the
> fuel is more efficiently burned because it is not being burned at the
> wrong times.
>
> JP Roberts
In this case it's a 2005 engine so the problem with early 1.8T intercoolers
probably does not apply.
The ECU may only be calibrated for 95 so putting in 98 would not cause the
ignition to be advance any further.
I doubt anyone could tell the difference between 95 and 98 in a blind test
in this particular car.