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General Discussion Area / Re: What has P*ssed you off today?
« on: Yesterday at 09:34:25 »
Had to login to OOF this morning to see what people were whinging about today. Guess some cookie or other had become stale.
Welcome to OOF
What I don't get is...The pharmacists' job appears to be counting. Not sure when it became a requirement to have a university degree to count up to 14 (or multiples thereof)
So it takes at least 2 people 15 minutes to move a pre-sealed box of pills about 3 feet from the shelf where they were stacked to the "customer". You get home, take that day's pills and wash them down with a nice single malt.
The pharmacist's job is checking, not counting. They're checking that the prescription is safe both singly and in combination with other medications, correctly prescribed(the right dose, chemical, amount etc), labelled and given to the correct person before putting their name and reputation on it. It's not unusual for a pharmacist phone the prescribing doctor and read them the riot act about dangerous prescriptions as they have far more understanding of how the drugs actually work, and don't just look up the symptoms and likely drug in a list.
What you're implying is the equivalent of Boeing relying on the new, barely trained, over-worked employee being able to fit a door panel without supervision and inspection. Or some fool designing his own deep water submersible.
If you google "Mercedes eco-start-stop-technology-guide-pdf", and click on the link to the glaowners.com, you'll get a pdf describing the system. There is a whole load of guff in there, and I checked it all on my car. The only thing that is out of limits is the battery voltage drop.
What I'm unsure about is if it's the drop on the small auxillary battery, or the main 'big' battery. But I can see on the iCarsoft that the 'battery' voltage dips to between 10 and 11V on my car (from > 12.5V) , and that's enough to disable stop start.
That's not what the document says at all.QuoteIf the voltage dip (U < 11V) at engine start is to great, the engine stop is deactivated for t = 1 minute in order to recharge the Eco start/stop function battery
Its not actually defining what it considers to great and it also is only delaying activation of the stop start for 1 minute. The rest of the doc is referring to 'available electrical power' which is the SoC.
Also, be absolutely assured that your scan tool will not be able to report the mS long volt drop at cranking as its just reading messages at random intevals, you need an oscilloscope on the starter terminal to do that. The volt drop will be down to 9V or less on a cold engine crank (remember, this is my day job on the design side )
If the open circuit voltage (U > 12.5V) of the ECO start/stop function additional battery is too low, the alternator's output limitation (alternator management) (except model 212.095) is deactivated so that the ECO start/stop function additional battery can be charged.
If the voltage dip (U < 11V) at engine start is too great, the engine stop function is deactivated for t = 1 minute in order to recharge the ECO start/stop function additional battery.
The ECO start/stop function additional battery is only connected if the output limitation of the alternator is not active and the on-board electrical system voltage is high enough (U > 13V). It is disconnected again if the limitation of the alternator is active or if the on-board electrical system is severely overloaded.
They do!
The Merc system monitors the battery voltage drop during cranking. If the voltage drops below (IIRC) 11.5V then it disables Stop/Start. It'll still start all the way down to less than 9V.
It's not really the state of charge that matters, but the batteries internal resistance. The resistance increases as the battery ages, so it can be fully charged (>13.7V) but still drop enough during cranking to disable the Stop Start.
Mine's been like it for over a year. Behaviour confirmed by iCarsoft scanner. New AGM Stop/Start battery would no doubt cure it, but why on earth would I want to do that! £300 to re-enable something I don't want.
If they do then they are fools! (I am confident they don't as we use the same setup!), they wouldn't meet ISO 16750-2 under those conditions
Monitoring the terminal volts under load tells you little about the battery condition as there are to many variables, temperature being the very significant one, as the chemical reaction in the battery is much poorer at low temperatures and so the VBatt drops much lower. There are also variables with connector/cable ageing, engine types and a whole host of other things.
The SoC is the critical measure for start stop, as it is the only means to tell if you have the reserve to complete repeat re-starts, its also the only viable means to determine battery health by checking the batteries ability to absorb energy
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Coded the stupid start stop malarky off mine, Only kicks in if I have it in Eco Plus mode..... Which I never do!
My ML's stop/start has stopped working all by itself I suspect the main battery is a little low, though it never hesitates to start up.
Keep an eye on it, the stop start systems do not look at the cranking ability, only the state of charge, if its stopped working then the battery is probably not recovering to more than 85% SoC which is plenty to crank but, shows the battery is deteriorating and they have a habit of dropping off a cliff after this point.
Did I hear that United was throwing in the towel, and looking at getting a load of 321neo's instead?
Spudulike does due to the density... 737-8200 is a Ryanair only 737-9 aircraft variation. But is fitted with an exit door which is secured differently into the same frame with cam locks and door lock sensors.
And I can't believe that no one would not take advantage of a seat sized hole to fit the interior.
I wonder if Ryanair will charge a premium for non window seats?
Pay £10 priority to guarantee you WON’T get allocated a seat next to an innocent looking window which is actually a “ plug” with loose bolts.
It is like something out of squid games!