Knock sensor necessary ? - Page 2 - Mercedes-Benz Forum

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post #11 of 20 (permalink) Old 05-27-2008, 03:38 PM
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Or maybe not.

"Don't pick a fight with an old man. If he is too old to fight, he'll just kill you."--John Steinbeck
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post #12 of 20 (permalink) Old 05-27-2008, 03:51 PM
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Originally Posted by DrJfrmLA View Post
Or maybe not.
after reading his last follow up post, im even more confused..

"yes they are necessary.. they save you from blowing up".. there.. that's the answer.
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post #13 of 20 (permalink) Old 05-27-2008, 04:12 PM
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Clearly, in milfun's world, everything and everyone is perfect; all owners test their gasoline before pumping it into their cars; they all know the exact performance, towing and operating specfications of their vehicles and never, ever, exceed them; they never operate their vehicles in unsual environmental situations, such as high, dry heat. milfun's world is quite a nice place, no?

Luckily for the rest of us, Mercedes engineers engines, cars, trucks, and commercial vehicles for "the real world" and for real drivers.

Last edited by MTI; 05-27-2008 at 04:15 PM.
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post #14 of 20 (permalink) Old 05-27-2008, 04:22 PM
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Clearly, in milfun's world, everything and everyone is perfect; all owners test their gasoline before pumping it into their cars; they all know the exact performance, towing and operating specfications of their vehicles and never, ever, exceed them; they never operate their vehicles in unsual environmental situations, such as high, dry heat. milfun's world is quite a nice place, no?
.
do bad fuel injectors lean out cylinders in milfuns world?
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post #15 of 20 (permalink) Old 05-27-2008, 04:22 PM Thread Starter
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Quote:
Originally Posted by MTI View Post
Clearly, in milfun's world, everything and everyone is perfect; all owners test their gasoline before pumping it into their cars; they all know the exact performance, towing and operating specfications of their vehicles and never, ever, exceed them; they never operate their vehicles in unsual environmental situations, such as high, dry heat. milfun's world is quite a nice place, no?

Luckily for the rest of us, Mercedes engineers engines, cars, trucks, and commercial vehicles for "the real world" and for real drivers.
Yes, this exactly confirms my point which is ...
The engine will NOT perform to spec without knock sensors.

MTI, there is a spec, you know. Put it another way, unless one lives in Antartica , MB has tested the engine under the conditions at your place. Put it yet another way
not to belabor the point but to get it across to some, NONE of the conditions you
mention above constitute abnormal driving conditions.
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post #16 of 20 (permalink) Old 05-27-2008, 04:23 PM
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The engine will NOT perform to spec without knock sensors.

what does that even mean? if i unplug a knock sensor the car wont run?

what is 'to spec'? hp wise?

and besides.. i thought you wanted NO knock sensors.
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post #17 of 20 (permalink) Old 05-27-2008, 04:43 PM
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do bad fuel injectors lean out cylinders in milfuns world?
No, because parameters "outside of spec" do not exist in milfun's world, only the real world.
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post #18 of 20 (permalink) Old 05-30-2008, 02:14 PM Thread Starter
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Originally Posted by MTI View Post
No, because parameters "outside of spec" do not exist in milfun's world, only the real world.
This is a question for those of you who are in the industry. What's the development
history behind knock sensors ?
Wasn't it developed to squeeze more performance from engines rather than
allow engines to operate "in the real world" (as MTI would say) ?

On another note, I have no idea what MTI means by "real world". However if MTI lives
in another world, then I would understand perfectly.
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post #19 of 20 (permalink) Old 05-31-2008, 10:09 AM
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Originally Posted by mlfun View Post
Why are knock sensors needed when the engine
is run on premium gas ?

Think about it.
Whenever you're about to post something like this, ask yourself if you're an engineer.

Ask your engineer friends if they build stuff with things tacked on that aren't necessary.

Lots of people that can't afford things or can't understand things resort to cynicism when it comes to whether something is "needed." Happens a lot in Chevy/Ford crowds, I imagine.

Do you suppose the "bean counters" made them put it on? How about the "lawyers?" "Marketing?"

Let's see, who else are we cynical toward?

How many other times are you the only person out of the world's billions in population that sees things clearly?

Give me a break.

Kent Christensen
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post #20 of 20 (permalink) Old 06-01-2008, 03:10 PM Thread Starter
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No need to be defensive, lkchris.

I asked simple questions. If and when you can contribute to the answers, I am all ears.

Why are knock sensors needed when the engine is run on
premium gas ?
What's the development history behind knock sensors ?

Quote:
Originally Posted by lkchris View Post
Whenever you're about to post something like this, ask yourself if you're an engineer.

Ask your engineer friends if they build stuff with things tacked on that aren't necessary.

Lots of people that can't afford things or can't understand things resort to cynicism when it comes to whether something is "needed." Happens a lot in Chevy/Ford crowds, I imagine.

Do you suppose the "bean counters" made them put it on? How about the "lawyers?" "Marketing?"

Let's see, who else are we cynical toward?

How many other times are you the only person out of the world's billions in population that sees things clearly?

Give me a break.

Last edited by mlfun; 06-01-2008 at 03:16 PM.
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