OT: GM thinks your'e stupid

In yet another example of the contempt GM has for it's buying public, the current ad for the 2011 Silverado states it has " active fuel management". nuff said. JR Dweller in the cellar

Reply to
JR North
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And this is stupid why?

Thank You, Randy

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Reply to
Randy

I reckon you could describe a carby system as active fuel management.

Reply to
Dennis

Advertising double-speak . Makes the customer think that they've got something new that others don't have . I mean , how can fuel management be anything but active ?

Reply to
Snag

Not necessarily , them ad-men are almost as good at doublespeak as lawyers ...

Reply to
Snag

"Active Fuel Management" means "turning off" some cylinders when the power demand is low... like the old Cadillac V8-6-4 system; only this one actually works. So yes, they do have something that others don't have. The poor advertising guy probably thought you would actually find out what it is and how it worked before you passed judgment on what he named it. LOL Maybe there's a good reason GM thinks some of you guys are stupid?

Reply to
David Courtney

I don't think that the OP was being careful when he criticized GM. "Active Fuel Management" is a trademarked system used by GM:

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they should have called it something more snazzy.

Reply to
Denis G.

The only thing GM has that other's don't is that trademarked name:

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GM as been actively managing fuel since the late-70's Buick turbo V6 that slowly advanced the spark until a ceramic microphone tuned to the engine block resonance detected a ping. This let it constantly adapt for best performance for the fuel's octane and the current manifold pressure. It's a computerized, closed-loop improvement of the old vacuum advance which assumes that lower peak cylinder pressure permits an earlier spark.

jsw

Reply to
Jim Wilkins

How about more descriptive? ...lew...

Reply to
Lewis Hartswick

So, when you really, really need that instantaneous power to get out of the way of the idiot who just blew the red light, how long is it going to take to get those cylinders back into service? A few seconds? Just long enough to get slammed? Value: Priceless.

LJ--who has used pedal-to-the-metal nearly as often as well-controlled braking to avoid accidents throughout his driving years.

-- "Human nature itself is evermore an advocate for liberty. There is also in human nature a resentment of injury, and indignation against wrong. A love of truth and a veneration of virtue. These amiable passions, are the latent spark. If the people are capable of understanding, seeing and feeling the differences between true and false, right and wrong, virtue and vice, to what better principle can the friends of mankind apply than to the sense of this difference?" --John Adams

Reply to
Larry Jaques

Why would you think it would take a few seconds? I'm thinking it would take more like a couple of revolutions of the crankshaft.

Reply to
rangerssuck

And exactly why would this take seconds? If it did, how would the vehicle ever accelerate?

Reply to
Michael A. Terrell

Just one. It's all servo/solenoid controlled.

That's about an order of magnitude faster than Jaqueass can realize he's not been paying attention - apparently for the umpteenth time.

JC

Reply to
John R. Carroll

On an 8 cyl engine, approxemately 1/8 of an engine rotation, which at

2000 RPM is 1/16000 of a minute, or 1/266th of a second, give or take.
Reply to
clare

Don't know about Gm's trademarks. Active Fuel Management in the generic sense equates to feedback loop, oxygen sensor controlled fuel/air ratio, carbed or injected, present on all cars of any note since 1983.... JR Dweller in the cellar

JR North wrote:

Reply to
JR North

I have active fuel management, I keep an eye on the gas gage and buy more before I run out. ;)

Wes

Reply to
Wes

OK, that's the theory. What's the reality? I don't even think the throttle positioner gives you that quick a response.

-- "Human nature itself is evermore an advocate for liberty. There is also in human nature a resentment of injury, and indignation against wrong. A love of truth and a veneration of virtue. These amiable passions, are the latent spark. If the people are capable of understanding, seeing and feeling the differences between true and false, right and wrong, virtue and vice, to what better principle can the friends of mankind apply than to the sense of this difference?" --John Adams

Reply to
Larry Jaques

It doesn't need to. When cylinders are deactivated, the throttle is already open farther than it would be if the cylinders weren't deactivated.

Reply to
aarcuda69062

Keep thinking. It'll kick in soon enough.

-- "Human nature itself is evermore an advocate for liberty. There is also in human nature a resentment of injury, and indignation against wrong. A love of truth and a veneration of virtue. These amiable passions, are the latent spark. If the people are capable of understanding, seeing and feeling the differences between true and false, right and wrong, virtue and vice, to what better principle can the friends of mankind apply than to the sense of this difference?" --John Adams

Reply to
Larry Jaques

"It" would be?

Reply to
aarcuda69062

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