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Old 04-23-2018, 03:39 AM   #11 (permalink)
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Cars with EOC are built for it. Mazda's is still the smoothest. Cylinder one primed to fire when the engine stops.

Mix that maybe with a small pneumatic reservoir to kick-start the engine... one that uses an accumulator to brake the engine to a stop... saves you extra wear on the starter motor.

Quote:
Originally Posted by jakobnev View Post
My greatest complaint about stop-start is that it doesen't activate at higher speeds.
Sadly, only a tiny percentage of start-stop equipped cars nowadays will shut off when coasting down to a stop.

I wish EOC was available from OEMs. Imagine an automatic-equipped car that switches off when coasting, and gently "bump starts" itself when you press on the gas pedal to overtake.

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Old 04-23-2018, 05:03 AM   #12 (permalink)
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Eric is good. I think I have found fault with him, but I like to point out the video where he dissected components after someone used stop leak. He showed how it made everything worse. It might work, but it seemed unlikely.

Shouty has several videos promoting stop leak. Put together they might be as long as Eric's video.

"Should You Leave Your Car's Engine Idling? Myth Busted" I watched three minutes and he kept giving different scenarios. "It depends." Thanks.
"Why Not to Buy an Auction Car" You cannot properly inspect it.
"The Best and Worst First Cars to Buy" I quit three minutes in again. No clear conclusion.
"Why It's Dumb to Buy a Smart Car" I consider "dumb" to be a weak adjective, but he lists many problems with them.
He uses the same template for every video thumbnail. The same picture of him superimposed on some car.
"Why Not to Buy a Car with Stop/Start Technology" I am waiting to be impressed. Has he repaired cars that broke down due to start\stop? Apparently not.
"The Worst Mistakes I've Made Fixing Cars" I have tried to watch this a few times, but I know that when I have made mistakes I have tried to help others avoid doing the same things.
Like watching Shouty Kilmer videos...
"5 Things You Should Never Do in a Manual Transmission Car." I already watched "5 Things You Should Never Do In A Manual Transmission Vehicle" by Engineering Explained two years ago. It has 10M views.
"How to Increase Gas Mileage in Your Car"
Okay. I am done here.
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Old 04-23-2018, 02:48 PM   #13 (permalink)
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Quote:
Originally Posted by niky View Post
Sadly, only a tiny percentage of start-stop equipped cars nowadays will shut off when coasting down to a stop.
Really? I though most if not all newer cars had DFCO? So they're essentially off (though still turning) when coasting to a stop, but turn themselves back on when you push in the clutch to stop.
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Old 04-23-2018, 03:38 PM   #14 (permalink)
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DFCO has supposedly been standard since 1996, but I cannot find a regulation for it, and when I tried to ask people who should be able to find it, I did not get anywhere.
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Old 04-23-2018, 04:45 PM   #15 (permalink)
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Quote:
Originally Posted by niky View Post
I wish EOC was available from OEMs. Imagine an automatic-equipped car that switches off when coasting, and gently "bump starts" itself when you press on the gas pedal to overtake.
The VW XL1 is, to my knowledge, the only production or limited-production car to have this feature. Yet another reason that, given the opportunity, I would buy one in a heartbeat regardless of price.
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Old 04-23-2018, 05:15 PM   #16 (permalink)
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There isn't any difference between EOC and DFCO in terms of fuel use. Both methods stop fuel from being injected into the engine. In EOC, the engine is stopped, so it's not turning anymore. In DFCO, the engine is still being turned because it's still engaged by the transmission, yet no fuel is being injected. This is why downshifting slows the car down. If it were injecting fuel then it would produce power rather than absorb it.

The advantage of EOC is that it doesn't bleed speed by turning the engine, so you can coast at a higher speed up until the point you have to slow down or stop. With DFCO, the vehicle slows down sooner because it's wasting energy turning the engine.
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Old 04-23-2018, 05:33 PM   #17 (permalink)
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I wish the start stop features were programmable.

They are to some extent ( batt voltage - engine temp) but not speed as far as i know.
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Old 04-23-2018, 06:58 PM   #18 (permalink)
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I like DFCO for hills steepr than those I can EoC down.
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Old 04-25-2018, 04:00 AM   #19 (permalink)
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I prefer the longer glide distances of EOC.

In the Prius, if I recall, you can toggle "Brake" and "Drive" modes while coasting, which allows you to either EOC or Regenerative Brake down to a stop.
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Old 04-25-2018, 08:24 AM   #20 (permalink)
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Quote:
Originally Posted by jakobnev View Post
My greatest complaint about stop-start is that it doesen't activate at higher speeds.
How's 70mph?


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