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> So China burns coal, to generate power, at huge heat and transmission loses, Are they truly burning coal or are they making syngas for use with a CCGT and sh

> So China burns coal, to generate power, at huge heat and transmission loses, Are they truly burning coal or are they making syngas for use with a CCGT and shipping the coke off for their steel? (Probably a bit of both, my wager.) Cause a CCGT is gonna be -at least- as efficient as an atkinson cycle gas engine. > once they implement particulate filters on them, You can hypothetically do this with a coal plant too, and what's even better is, it's easier to 'check up on' one power plant vs thousands or millions of individuals to make sure the filter is present and being maintained. (e.x. Cat deletes on gas engines.) > A gasoline engine, runs for a very long lifetime now, Short of something with a Toyota HSD style setup, you've still got a lot of -other- components that break down in increasing frequency to support that. Your Steel Belt CVTs, your 8-10 speed transmissions with too much complexity slammed in resulting in various reliability issues... And lately almost every manufacturer, even Toyota, has had to do a recall on some engines due to very bad failure modes. And all of it in the name of trying to keep gas engines to the need for efficiency while also trying to add far more power than most people need in a daily.

tw8345 2y ago
The ford 10R80. 10 speed transmission is famous for being terrible dispute being in use since 2018. As for toyota their new engines and transmissions arent really any better for fuel economy but seem to have reliability issues anyway. I think its more of a problem of too much power as the HP war rages on for more powerful engines.
- to11mtm 2y ago
  > As for toyota their new engines and transmissions arent really any better for fuel economy but seem to have reliability issues anyway. I mentioned HSD specifically, which refers to a Hybrid Setup where the transmission is typically a setup where in simple form there's a single speed gearbox, two motor/generators (one of which more or less replaces a torque converter to minimize losses) and an electronically controlled clutch for the motor to act in direct drive to, again, minimize losses. Rav4 Hybrids, Maverick Hybrids, Escape hybrids all have pretty good overall reliability track records as far as the engine/transmission goes (interestingly, some of the Ford models have a 'potential recall' on some VIN ranges but it seems like a supplier issue on the crankshafts... which TBH sounds like it hit other manufacturers e.x. Toyota.) The 'simple' Hybrid model like this typically involves: - A boring engine with atkinson-style capable VVT. Ford normally uses a variant of a Mazda design that is well proven, You don't need direct injection or turbos, AFAIK even Toyota follows the same pattern (unless they're doing D4S now... but doubt it based on observations of hybrids in the winter) - Transmission like noted above - A battery between 1.3 and 3.0 Killowatt hours (probably closer to 2.0 median tho). For comparison a tesla model 3 starts at ~50Kwh battery, costs for maintenance are overblown on hybrids frequently. - A mileage above 35MPG for something like a Rav4/Maverick/Escape hybrid. Far more for a Prius sized/profiled vehicle. - Maybe 1-2 seconds of torque decently above 200 lb-ft of torque in a burst, again on something like a 2.5 liter. > I think its more of a problem of too much power as the HP war rages on for more powerful engines. Yeah people miss the point there. Most people really want torque to help get them to a highway driving speed safely enough to deal with the rest of the folks out there and have enough HP to get to necessary evasion speed. (And, a transmission that can keep up with that.) For >90% of my driving, the Hybrid gives me enough 'oomph' compared to my older M/T WRX that, well, the WRX now has a maintenance backlog (FML). If you can hit >200 pound feet in a compact to midsize (C/D class), frankly, that's enough. The average person on the highway being able to hit 0-60 in <10 seconds is often a liability, because it makes them overconfident.

tw8345 2y ago

The ford 10R80. 10 speed transmission is famous for being terrible dispute being in use since 2018. As for toyota their new engines and transmissions arent really any better for fuel economy but seem to have reliability issues anyway. I think its more of a problem of too much power as the HP war rages on for more powerful engines.

to11mtm 2y ago
> As for toyota their new engines and transmissions arent really any better for fuel economy but seem to have reliability issues anyway. I mentioned HSD specifically, which refers to a Hybrid Setup where the transmission is typically a setup where in simple form there's a single speed gearbox, two motor/generators (one of which more or less replaces a torque converter to minimize losses) and an electronically controlled clutch for the motor to act in direct drive to, again, minimize losses. Rav4 Hybrids, Maverick Hybrids, Escape hybrids all have pretty good overall reliability track records as far as the engine/transmission goes (interestingly, some of the Ford models have a 'potential recall' on some VIN ranges but it seems like a supplier issue on the crankshafts... which TBH sounds like it hit other manufacturers e.x. Toyota.) The 'simple' Hybrid model like this typically involves: - A boring engine with atkinson-style capable VVT. Ford normally uses a variant of a Mazda design that is well proven, You don't need direct injection or turbos, AFAIK even Toyota follows the same pattern (unless they're doing D4S now... but doubt it based on observations of hybrids in the winter) - Transmission like noted above - A battery between 1.3 and 3.0 Killowatt hours (probably closer to 2.0 median tho). For comparison a tesla model 3 starts at ~50Kwh battery, costs for maintenance are overblown on hybrids frequently. - A mileage above 35MPG for something like a Rav4/Maverick/Escape hybrid. Far more for a Prius sized/profiled vehicle. - Maybe 1-2 seconds of torque decently above 200 lb-ft of torque in a burst, again on something like a 2.5 liter. > I think its more of a problem of too much power as the HP war rages on for more powerful engines. Yeah people miss the point there. Most people really want torque to help get them to a highway driving speed safely enough to deal with the rest of the folks out there and have enough HP to get to necessary evasion speed. (And, a transmission that can keep up with that.) For >90% of my driving, the Hybrid gives me enough 'oomph' compared to my older M/T WRX that, well, the WRX now has a maintenance backlog (FML). If you can hit >200 pound feet in a compact to midsize (C/D class), frankly, that's enough. The average person on the highway being able to hit 0-60 in <10 seconds is often a liability, because it makes them overconfident.