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General => IHADAV8 Playground => Topic started by: daveismissing on July 19 2017, 09:08:39 AM

Title: Mild Hybrids
Post by: daveismissing on July 19 2017, 09:08:39 AM
Mild hybrids are a mini-trend within today’s auto industry. The new versions use a toned-down form of electrificatio n – a 48V electrical architecture, instead of the 300V, 400V and even 600V used in their full-hybrid brethren. Coupled with a relatively small lithium-ion battery (roughly half a kilowatt-hour), the mild hybrids can do enhanced start-stop, along with regenerative braking. They can turn off the internal combustion engine before coming to a complete stop, re-launch the vehicle on electricity, and fire the engine back up after it’s already in motion. Or they can “sail” – that is, shut down the engine at highway speeds and coast for a short time on electricity.
Moreover, 48V electrical architectures offer a big benefit for engineers who are trying to add power-hungry new features, such as heated seats, heated windshields, electric power steering, and infotainment systems. Unlike today’s 12V systems, which offer about 2-3 kW of power, a 48V system can produce 10-12 kW.
For all those reasons, many automakers are looking at some form of mild hybridization. Volvo, Audi, PSA Group and Mercedes-Benz have all announced plans to implement 48V architectures.

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Title: Re: Mild Hybrids
Post by: good2win22 on July 19 2017, 11:31:21 AM
Why not look at the 24 volt systems already in place on aircraft. De-ice capabilities as well as Tv's in every headrest.
Title: Re: Mild Hybrids
Post by: TexasT on July 20 2017, 09:35:15 AM
While I get the idea to use the energy expended while stopping and the start and stop of the fossil fuel engine, if you are charging from a station that is supplied by a power plant a don't see where that reduced emissions. I can see it I guess if it is from solar or wind, but a fossil fuel burning power plant puts out "harmful" emissions just like a vehicle. Then you have the expense of battery disposal/recycle and a possible shocking experience in the event of collision. And "get off my lawn".
Title: Re: Mild Hybrids
Post by: daveismissing on July 20 2017, 09:57:22 AM
I am now blessed with 2 vehicles with stop-start. That gets shut off very frequently.
No way I'm commencing a left turn at a busy intersection with the engine shut down.
Title: Re: Mild Hybrids
Post by: motorhead on July 21 2017, 09:48:41 AM
While I get the idea to use the energy expended while stopping and the start and stop of the fossil fuel engine, if you are charging from a station that is supplied by a power plant a don't see where that reduced emissions. I can see it I guess if it is from solar or wind, but a fossil fuel burning power plant puts out "harmful" emissions just like a vehicle. Then you have the expense of battery disposal/recycle and a possible shocking experience in the event of collision. And "get off my lawn".

It is falsehood.  Not to mention the additional resources required to produce EVs and Hybrids.  People behave like it is some sort of free lunch.
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