12-31-2020, 12:13 PM | #1 |
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Hybrid technology
I’ll go out and say I really don’t care about the newest solid state battery tech for my primary car but instead I’m thinking could a 5-10kwh battery be located somewhere in every BMW using this new tech that doesn’t take up much space or add too much weight giving better performance and economy?
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12-31-2020, 03:26 PM | #2 | |
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01-01-2021, 07:54 AM | #3 | |
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In all seriousness BMW has plans to hybridize pretty much their entire lineup sometime in the next decade, not to mention 9 electric vehicles by 2025. Btw current plug in hybrid 330e has 12-kW-hr battery, it is about 440 pounds heavier than the 330i. BMW says the battery weights around 330 pounds, and other hybrid components adds an additional 110 pounds. If they can get 50% improvement in battery weight/performance the hybrid weight penalty will be less than 300lbs vs 440lbs currently. Or they can put twice as powerful battery for same weight -they can stuff a smaller 3 cylinder petrol engine, maybe even remove transmission too for weight savings.
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01-01-2021, 01:41 PM | #5 | |
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On the note of a 3 cylinder, the B38 isn't much lighter than the B48, might as well go with the B48 - which is what the i8 always needed in my mind.
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01-01-2021, 01:45 PM | #6 | |
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I like the idea of full electric vehicles, but there is range anxiety, its real! I like the idea of hybrid, bc it has a combustion motor as backup, but it comes with downsides. I will likely get an electric powered vehicle one day, but that doesn't mean there aren't downsides. |
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01-01-2021, 02:40 PM | #7 | |
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Once solid state batteries become the norm, and a charge can be done in 5-10 mins, the gas powered cars days are numbered. My next daily will be full electric for sure. |
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01-02-2021, 12:02 PM | #8 |
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I think the 48v system makes some sense. Brakes are wasting energy (would expect a 48v system adds to brake life), stop/start isn't as smooth as it could be, isn't an extreme amount of weight and electric motors are pretty simple to make dependable.
Any new technology or system has negatives, just depends on which is worse. My father says his mid 60's cars are great because they are so simple but then they have a hard time starting when it is cold, they aren't fuel efficient and the smell of burning gas can be too much. When variable valve timing came out people wondered if the cost/complexity was worth the benefit, same with turbo's when they went mainstream.
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01-12-2021, 05:47 AM | #9 | |
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By dividing the work of motion between these three systems, each system can be designed to their lightest form for overall vehicle weight reduction. The GM Voltec drivetrain was on the path of developing such a vehicle, but regulations against carbon fuel burning make it not worth the investment. Unfortunately the world is regulated to develop the BEV and that's it. It's settled science.
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01-12-2021, 06:30 AM | #10 | |
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https://www.motor1.com/news/266766/m...tender-patent/ Mazda is fiddling with a rotary engine for powering their batteries in the latest model CX-30. By nature the rotary is good for low torque and constant demand applications. The whole system needs fine tuning, sure. Most people know of the flaws of the rotary engine but in this application it could be promising. https://www.caranddriver.com/news/a3...confirmed-usa/ |
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01-12-2021, 09:03 AM | #11 | |
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A true engine-eletric drive system (like used in modern locomotives) allows for optimizing the separate components to do just their job. That allows engineers to optimize the (light) weight of components in an automotive version. The problem with automobiles, which is different than trains, is the constant change in acceleration. That can be over come by storage batteries and large capacitors to deal with peak acceleration demands. Locomotives do not change speed as rapidly as automobiles do, so the power generator is large and heavy to meet the demands of full pulling power locomotive needs. The drivetrain scaled and repurposed to automotive use can drastically reduce the size and weight of the engine since it's only work is to generate electricity. The problem is since ICE can be banned by a stroke of a pen, it is sadly hard to justify development of the technology. My opinion of course. A rotary engine could be ideal for this type of application. Last edited by Efthreeoh; 01-12-2021 at 09:01 PM.. |
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