Whats is your opinion the jeeps engine stop start system?

[Batterycap]

LOL - real scientific. A forum where people come to complain about systems. Yup, real accurate and scientific.

Where the claim of "scientific" made? What science are you referring to?

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[ShadowsPapa]

Where the claim of "scientific" made? What science are you referring to?

If you don't get it, there's no explaining it to you, sorry.

 

[Badunit]

I would like to read the scientific study. Was a link to a/the study posted somewhere in the past 107 posts?

Fuel savings are probably measurable in city traffic with long waits completely stopped at stop lights, where you have to wait a few cycles to get through. Other than that I don't see much to be gained from it.

Personally, I can't stand it. It is taking me forever to train myself to immediately turn the stupid ASS (Auto-Start/Stop) off every time. I often forget then hit the button at the first stop sign, after I hear the engine quit. I don't want a tazer or one of the defeat devices; I'd rather not have additional electronics attached.

 

[Minty JL]

Useless system and the analysis proves it.

Save like .6 gal of fuel for every 10k miles......dumb

 

[KevinM60]

Useless system and the analysis proves it.

Save like .6 gal of fuel for every 10k miles......dumb

Not that I’m in favor of the reasoning but isn’t the jive behind the ESS to lower emissions?

 

[Deleted member 57233]

ESS has the engine stopped for more than a couple seconds.

Would you pay even the small amount of $500 for ESS as an option?

How long is your engine stopped when you change the oil? How long is it stopped every night? Better leave it running while you're at work just to be on the safe side.

If you think the oil completely leaves the top end of the engine, to where it doesn't even have residue, all in the time you sit at a stop light; then I have some power additives and blinker fluid you might be interested in buying.

 

[ShadowsPapa]

Not that I’m in favor of the reasoning but isn’t the jive behind the ESS to lower emissions?

They get CAFE credits. And how they check for mpg is tailpipe sniffing - they calculated fuel used based on what comes out the pipe.
For the cities banning idling - it is indeed for emissions.
But for the EPA, it's fuel economy which is coupled with emissions.

 

[ShadowsPapa]

Useless system and the analysis proves it.

Save like .6 gal of fuel for every 10k miles......dumb

4 to 10% fuel savings, depending on the vehicle and driving location by Edmunds' study.
This is a quote from actual Edmund testing -
The official city test pattern has plenty of stops, but there's not nearly as much idle time as many of us deal with every day. It's entirely possible that a stop-start car could exceed its own city mpg rating with the system engaged.

The engineers we asked about potential fuel savings always spoke in terms of a range of 3-10 percent, with some venturing as high as 12 percent. The wide span accounts for the variety of driving conditions out there. People who pause briefly at four-way stops have less to gain than those who sit idle at numerous long signals. The longer you sit, the more you save.

It boils down to this. If your car usually manages 20 mpg in the city, it could earn 22 or 23 mpg if it had a stop-start system.

Our Test Results
For the first couple of tests we attempted to capture the maximum difference, so we ran the BMW and the Jaguar with the air-conditioning off in order to prevent premature restarts triggered by rising cockpit temperatures. Consider it the spring/fall scenario with the windows cracked to let some fresh air inside.

Our 328i GT used 3.1 gallons with the system off and 2.8 gallons with it on, a savings of 9.5 percent. That works out to 91 cents saved in 80 miles. Calculated fuel economy rose from 26.2 to 28.7 mpg.

The Jaguar did a little better, which makes sense when you're talking about a thirstier V8. It consumed 4.1 gallons with the system off and 3.6 with it on, a reduction of some 10.9 percent. At local prices that returned $1.47 to our pocket. Corresponding fuel economy increased from 19.7 to 22.1 mpg.


SAE studies show more.

From Consumer Reports:

Depending on driving conditions, the fuel economy improvements of the start/stop function were between 7.27 and 26.4 percent in fuel use during testing, according to the Society of Automotive Engineers (SAE).

 

[Charles 236]

This is an entertaining thread. Like oil choices, ESS is in the "Holy War" level when it comes to opinions. I am aware of everything that Chrysler did to the Pentastar Upgrade engines to make them work in the stop/start environment. The systems work as advertised, until battery failure comes, as it always does sooner or later. OR... someone modifies it without understanding what they are doing and why. This is the YouTube crowd.

For me, I don't care for it. I understand it, I don't fear that it will strand me or leave me hanging waiting for the restart. I appreciate the engineering that goes into it. I recognize that it is required to meet emissions standards and also adds a bit of economy. Without it, there might not even be some of the vehicles we enjoy.

 

[ShadowsPapa]

Without it, there might not even be some of the vehicles we enjoy.

That right there. They've paid a lot in fines and likely more will be coming. Bringing back the hemi can't help the CAFE numbers.
If we want our precious beloved vehicles, we have to accept the constraints under which vehicle makers must operate. We don't have to love or even like them, but without these credits, there might not even be a Gladiator at all.

I wish I had your depth of knowledge on these engines! I'd pay to go to the classes.

 

[AmosMoses]

If we want our precious beloved vehicles, we have to accept the constraints under which vehicle makers must operate. We don't have to love or even like them, but without these credits, there might not even be a Gladiator at all.

This is a common theme I've read from you in the past. A very weak and passive view relating to out of control regulation. This is not compatible with American heritage.

We don't have to accept excessive regulation or carbon credit systems created by crooks.

 

[ShadowsPapa]

This is a common theme I've read from you in the past. A very weak and passive view relating to out of control regulation. This is not compatible with American heritage.

We don't have to accept excessive regulation or carbon credit systems created by crooks.

Not really, I just don't see a reason to have a heart attack over it. I act by voting. Nuff said on that to prevent either of us getting the attention of the admin or mods.
We have to accept that it is what it is, but we don't have to stop at that. And you know exactly what I mean - I'd bet on it. (I had to unfriend my own brother on FB because of his new hatred of me over certain things)

(If you want to know more, PM me - I promise you will be ok with the response)

 

[ShadowsPapa]

or carbon credit systems created by crooks.

I could say something that would make you laugh, but it could get this thread, well...... it involves a certain person and the history of the internet.

 

[Bbannongmu]

God awful

 

[AmosMoses]

I could say something that would make you laugh, but it could get this thread, well...... it involves a certain person and the history of the internet.

Iam talking about Kenneth Lay not his buddy who likes massage parlors.

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