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S60 & V60 '18> / XC60 '17> / S90 & V90 '16> / XC90 '15> General Forum for the SPA-platform 60- and 90-series models |
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Mild hybridViews : 560 Replies : 8Users Viewing This Thread : |
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Jan 30th, 2024, 05:51 | #1 |
Djkenn
Last Online: Jan 31st, 2024 21:35
Join Date: May 2016
Location: Twinstead, Suffolk
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Mild hybrid
I have a 2023 V60 Cross Country
Does anyone have a good explanation of how the hybrid system works. The dealer (Lookers Colchester) is talking what sounds like complete crap to me. To be fair, have not asked Service |
Jan 30th, 2024, 06:12 | #2 |
Master Member
Last Online: Apr 25th, 2024 22:27
Join Date: Feb 2019
Location: Norwich
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How exactly is the dealer explaining it to you?
The mild Hybrid system is basically a very fancy and efficient stop/start system that utilises a 48v system rather than the standard 12v system. This enables the engine to stop and be restarted again very quickly (almost seamlessly) with the starter/generator supposedly also giving the car some low speed electrical drive assistance when pulling away and when coasting to improve economy.
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Jan 30th, 2024, 06:18 | #3 |
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Its exactly as sk456 says.
It does little or near nothing. The only way you know its a mild hybrid (apart from the tiny battery on the dash) is the lack of a starter motor cranking away when you start up. Apart from that, its pretty much nothing more than a marketing gimmick. - Volvo proudly announced that all of their cars were electric in some form or other…. |
Jan 30th, 2024, 08:50 | #4 |
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Location: Bristol
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At the bottom of this article there is a nice explanation.
https://www.whatcar.com/advice/buyin...buy-one/n22776 So cars like Toyota Prius are "Parallel hybrids", with dual motor system where car can be propelled by ERAD, and tiny battery, just like in plug-in hybrid Volvo. But mild hybrid volvos seem to be Range-extender hybrids, with no ERAD, no electric motor but battery is helping ICE to achieve greater efficiency, is that right? Correct me if I am wrong anywhere, please.
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Jan 30th, 2024, 10:11 | #5 |
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It basically helps the car with the following:
- Functions as a starter motor (no conventional starter in MHEV Volvos) - Supply electricity for auxiliary functions such as A/C when the engine is not running and with the approx 1 kWh (if I remember correctly) Li-Ion battery it can keep A/C running without turning on the engine longer than older MHEV systems. - It also kicks in for a short period of time (few secs) when you intensely accelerate the car (e.g. overpassing) or when getting going from red light, stops etc. - It helps with engine braking (while recharging the battery) when the brake pedal is pressed and the recuperation is even stronger when you put the car in manual mode. Basically that's it. It's a serial hybrid with very little-to-no effect on car performance. It's more about smoothness and powering A/C, etc. when the engine is not running.
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Jan 30th, 2024, 13:57 | #6 |
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We have the V90 B4 mild hybrid and i have to say the braking performance is not what id expect to it to be, ive adjusted my driving style to suit, i even took it back to the dealer after only a few hundred miles to check all was ok, they just said its part and parcel, some times on initial application i feel no reduction in speed but the battery icon appears as recharging etc
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Jan 30th, 2024, 14:33 | #7 | |
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Quote:
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Jan 30th, 2024, 14:35 | #8 |
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Much appreciated, i guess they dont on the whole inspire me with as much confidence as they should considering the size of the car etc
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Feb 1st, 2024, 17:44 | #9 |
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I don't know about the cross country model, as I suspect with 4WD it has a torque converter gearbox which will operate differently, HOWEVER on the B3 and B4 V60 with the DCT gearbox, and then only on late 2022 onward models, the mild hybrid works differently and switches off the engine when you lift off the throttle at speed, allowing the car to coast quite a distance if you're on a slight gradient.
My B3 (2023) does this and I can easily get mid 40s MPG out of it in most situations where I got mid 40s MPG out of my previous D4 - however it requires more "effort" to do so as you have to consciously lift off.
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