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Putting the engine behind the driver frees up some packaging constraints that might allow the engine to be OHC.
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Oct 13, 2017 01:30
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Powershift posted:I think within 5 years, every single car will be a "mild hybrid" with a belt driven starter/alternator that can harvest energy while coasting and contribute to forward motion. The benefit is too great not to go that route. Even if the car doesn't have batteries, I think we'll see a lot more starter/generator units as net-new engine designs come out. It's allows you to replace the starter, alternator, and flywheel with a single assembly in the bellhousing. It also frees the accessories system up to the point that if you're using electric power steering, an electric coolant pump, and find some way to run the A/C compressor off a motor, you can eliminate the belt system entirely.
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Oct 13, 2017 05:26
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Throatwarbler posted:Putting the engine behind the driver frees up some packaging constraints that might allow the engine to be OHC. Was the Northstar engine OHC? Man this thing really might be a Fiero!
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Oct 13, 2017 13:58
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The iron duke rides again!
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Oct 13, 2017 14:18
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The fact that there was once a Camaro with 92 horsepower never fails to brighten my day.
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Oct 13, 2017 14:37
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CornHolio posted:Was the Northstar engine OHC? Yup, it was.
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Oct 13, 2017 14:52
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CornHolio posted:Was the Northstar engine OHC?
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Oct 13, 2017 14:57
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Powershift posted:I think within 5 years, every single car will be a "mild hybrid" with a belt driven starter/alternator that can harvest energy while coasting and contribute to forward motion. The benefit is too great not to go that route. Yup. It is a no-brainer at this point.
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Oct 14, 2017 00:08
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Got to check out a Stinger at Kirby Kia of Oxnard this morning. I really like it but one thing stood out the most to me: This:  Plus this:  Gets you this:  Otherwise it's a neat and somewhat attractive car, I'd like to test drive the various trims when they come available to determine if it's worth picking one of these up used after it suffers massive depreciation over the next few years.   
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Oct 15, 2017 22:27
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I'm still almost definitely getting one, but I really hate the chrome on the side view mirrors. The crappy update in my Stinger wait is that only one Kia dealership in the D.C. area is going to be selling them apparently, and it's like a 40 minute drive which is a pain when there's a Kia dealer walking distance from my office.
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Oct 16, 2017 01:16
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If it has a stick I'll buy it next year on the spot. I need a family car but gently caress the g80 is expensive and auto, g70 too small, otherwise I'm buying an accord sport.
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Oct 16, 2017 05:15
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Christobevii3 posted:If it has a stick I'll buy it next year on the spot. I need a family car but gently caress the g80 is expensive and auto, g70 too small, otherwise I'm buying an accord sport. It won't but the G70 will
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Oct 16, 2017 05:18
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davebo posted:I'm still almost definitely getting one, but I really hate the chrome on the side view mirrors.
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Oct 16, 2017 11:39
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Mr. Apollo posted:Audi uses a matt aluminum finish on the side view mirrors of its S and RS cars. It’s not surprising considering Kia’s lead designer used to work at Audi. I think he's now head of design at Hyundai Maybe it's a joint position idk
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Oct 16, 2017 14:04
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OXBALLS DOT COM posted:I think he's now head of design at Hyundai https://en.wikipedia.org/wiki/Peter_Schreyer quote:He has been the chief design officer at Kia Motors since 2006 and on 28 December 2012, was named one of three presidents of the company. He is currently the chief designer at Hyundai-Kia and works with Luc Donckerwolke, former design director of Volkswagen Group - Bentley, Lamborghini and Audi from 2016. edit quote:The Kee concept vehicle, shown at the 2007 Frankfurt Motor Show, introduced a new corporate grille to create a recognizable 'face' for the brand known as the Tiger Nose. Commenting on the new signature grille in 2009, Schreyer said "Tigers are powerful, yet friendly". 
Mr. Apollo fucked around with this message at 18:34 on Oct 16, 2017 |
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Oct 16, 2017 18:28
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He then glanced wistfully at Poland.
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Oct 16, 2017 18:42
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Mazda's rotary engine may live on as a range extenderquote:It may be time for rotary fans to start getting their hopes up a little for a return of the spinning triangle engine. Automotive News spoke with Mitsuo Hitomi, the man in charge of Mazda powertrains, who said there's a very good chance the next implementation of the rotary engine will be as an electric car range extender. The news source also suggests that such a vehicle could be just around the corner, since Akira Kyomen, Mazda's vehicle development program manager, confirmed to Automotive News that the company will have an EV out in 2019 in both pure electric and range-extended versions. We reached out to Mazda for more information, and a representative confirmed both the pure electric and range-extended models for 2019, but couldn't comment on anything else regarding those vehicles. Electric and range-extender Mazdas in just a year, on top of the Skyactiv-X inbound? For such a tiny company they sure are crushing lately. And here's hoping they really do have a sport-oriented rotary hybrid in the hopper. Would be a perfect match.
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Oct 16, 2017 21:50
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Right after the skyactiv-d hits the dealer lots!
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Oct 16, 2017 21:56
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There must be a subset of engineers at Mazda who are hell-bent on finding a way to make a rotary engine viable.
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Oct 16, 2017 22:53
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What if you connected a 10krpm rotary directly to the shaft of an electric motor directly to the differential give it a top speed of 150mph, tune the rotary for top end, the electric motor will handle the low end 0-15mph you'd be on electric, at 1000 rpm the rotary would kick in. 60mph you'd be at 4000 rpm, just like a normal rotary  The rotary would do it's thing where it's best, the electric motor would do it's thing where it's best, there would be no losses in the transmission, no starter, you wouldn't need much battery. Mostly electric around town, range dictated by gas tank. You could put a dog cluch on the output shaft and run it as a generator when it's parked if you wanted to. You could basically have a sporty rotary, except with torque.
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Oct 16, 2017 22:56
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That's basically how the Honda hybrid system works, except with the addition of a clutch so that the gas motor can also charge the battery when needed (not just when parked as you describe), they probably have a patent on it. The problem with the rotary is that the compression ratio is too low because of the shape of the combustion ratio and the emissions are too high because it burns oil. Electrification doesn't help either of those problems.
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Oct 16, 2017 23:01
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Not with that attitude it doesn't
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Oct 16, 2017 23:22
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Mazda absolutely still has a rotary skunkworks team. I'd bet the next rotary also has HCCI ignition.
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Oct 17, 2017 01:21
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DEUCE SLUICE posted:Mazda absolutely still has a rotary skunkworks team. Absolutely, there are engineers still working at Mazda who started fresh out of university and have literally only worked on rotaries. That's 40+ years. It's been their entire life. I hope they still have enough pull to steer the R&D ship.
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Oct 17, 2017 01:36
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Do range extenders count towards vehicle emissions like a normal internal combustion engine does if they’re just used to charge the batteries or power an electric motor? I assume they do but I’ve never read anything regarding how they’re tested.
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Oct 17, 2017 01:37
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DEUCE SLUICE posted:I'd bet the next rotary also has HCCI ignition. Unless they install insanely complicated face shape-shifting bits into the rotor, I don't think HCCI really helps. I'm sure they've thought of it, if they were willing to try to combust the gas mix with frickin' lasers.
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Oct 17, 2017 01:38
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Mr. Apollo posted:Do range extenders count towards vehicle emissions like a normal internal combustion engine does if they’re just used to charge the batteries or power an electric motor? I assume they do but I’ve never read anything regarding how they’re tested. https://www.youtube.com/watch?v=zWgeVytbvLI
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Oct 17, 2017 03:27
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What about using something like a diesel particulate filter? Its not like a rotary can't generate the heat necessary to regen it and it'd help with the emissions from burnt oil.
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Oct 17, 2017 03:34
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Cop Porn Popper posted:What about using something like a diesel particulate filter? Its not like a rotary can't generate the heat necessary to regen it and it'd help with the emissions from burnt oil. Gasoline particulate filters are a thing, and on the way.
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Oct 17, 2017 03:37
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You could get an arbitrarily high compression ratio by making the cutout in the rotor smaller. It would lower displacement, but you can just add more rotors! 
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Oct 17, 2017 04:33
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I suspect that if Mazda actually puts the rotary hybrid into production they will have solved most of the rotary's problems. As a range extender it can run at a single, optimized speed so that simplifies things a bit.
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Oct 17, 2017 04:48
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Deteriorata posted:I suspect that if Mazda actually puts the rotary hybrid into production they will have solved most of the rotary's problems. As a range extender it can run at a single, optimized speed so that simplifies things a bit.
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Oct 17, 2017 15:27
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One small step for a rotary; one giant leap for something something.
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Oct 17, 2017 16:33
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Powershift posted:Gasoline particulate filters are a thing, and on the way. The best way to ensure EV adoption is incredibly inconvenient regulations on IC cars.
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Oct 17, 2017 18:09
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Honestly gasoline engines are getting so complicated these days that I like the idea of electric more and more just for its simplicity. Remember back when "fixing a carburetor" was the go-to analogy for a supremely complicated task? Now taking apart a carb is hilariously easy compared to an engine equipped with sequential twin turbos, variable valve timing, five different emissions control systems, direct injection, cylinder deactivation, hybrid motor/generator units, ten-speed automatic transmissions...and the engineers just keep cramming in more and more technology. The Zero electric motorcycles that I keep dreaming about buying have, other than brake pads, tires and the drive belt, only a single regularly scheduled wear part: the motor output shaft bearing. It costs 17 dollars and is replaced at 50,000 miles. Ahhh.
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Oct 17, 2017 20:39
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ICEs have definitely become Rube-Goldberg machines of complexity in the pursuit of chasing down increasingly-marginal efficiency gains. It's pretty amazing that they work as well and reliably as they do, but also not surprising that anymore there is very little "fix/rebuild" in professional shops, and instead just replacement of entire assemblies. Too much time/effort to actually track down a problem, just replace the whole drat thing. As much as I enjoy driving a well-engineered ICE, I'm seriously looking forward to the simplicity (and torque) of electrics. Just got to figure out that energy density and recharge thing...
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Oct 17, 2017 20:50
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Sagebrush posted:
Only problem with Zero is that they cost Ducati money for Suzuki design. Electric motorcycles jusy aren't ready yet. Much like Tesla, the real interesting electric bikes/cars will come when the real manufacturers decide it's worth developing.
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Oct 17, 2017 21:06
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As far as I'm concerned, the Zeros are as ready as you can get with current battery technology. Motorcycles are much more constrained by the weight and size of the battery pack than cars are, and Zero managing to get nearly 200 miles out of a 400-pound motorcycle is totally solid. Most gas motorcycles only get about 200 miles from a tank anyway. A Zero S is competitive in-town with any ~650cc standard on any level except price, which will hopefully continue to decrease. The only thing they really need, which every EV manufacturer needs as well, is Tesla-level fast charging. Didn't Tesla open up their patents? Why aren't any companies designing vehicles that connect to the supercharger network?
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Oct 17, 2017 21:29
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The computerization of stuff has been great though, instead of carb float needles or vacuum hoses you're replacing a solenoid or whatever. Nobody's going to rewind motors or cast parts or PCBs at home so that kind of rebuilding is gone. The lack of a right to repair or standardized useful OBD is turning into some bullshit quick though, although car stuff can be intuitive if you have a handle on how the basics work. The complications that get added have been there for a while, mercedes with hydraulic door locks and windows and whatever else. At least the federally mandated backup cameras are all digital electronics and a single cable plugged back into the main computer instead of some analog camera and spaghetti wire contraption we would have in the 80s. Sagebrush posted:As far as I'm concerned, the Zeros are as ready as you can get with current battery technology. Motorcycles are much more constrained by the weight and size of the battery pack than cars are, and Zero managing to get nearly 200 miles out of a 400-pound motorcycle is totally solid. Most gas motorcycles only get about 200 miles from a tank anyway. A Zero S is competitive in-town with any ~650cc standard on any level except price, which will hopefully continue to decrease. I think we're just going to see a computer power supply standard thing where everything works with whatever voltage/current and you might have to have a bootful of dongles until 2050 when the wave of building charging stations is over
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Oct 17, 2017 21:51
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Sagebrush posted:As far as I'm concerned, the Zeros are as ready as you can get with current battery technology. Motorcycles are much more constrained by the weight and size of the battery pack than cars are, and Zero managing to get nearly 200 miles out of a 400-pound motorcycle is totally solid. Most gas motorcycles only get about 200 miles from a tank anyway. A Zero S is competitive in-town with any ~650cc standard on any level except price, which will hopefully continue to decrease. Superchargers are tied to VIN. newer teslas have to buy access to the network. Owners of older teslas with the "free superchargers for life" get nasty letters if they use them regularly. Tesla could realistically sell access to them to non-tesla owners if they chose, but they would lose that marketing advantage and tesla owners would get mad at the poors in their nissans taking up all the charging spots. I'm surprised building codes haven't been updated to mandate that a % of parking spots at new commercial buildings have chargers. hifi posted:The computerization of stuff has been great though, instead of carb float needles or vacuum hoses you're replacing a solenoid or whatever. Nobody's going to rewind motors or cast parts or PCBs at home so that kind of rebuilding is gone. The lack of a right to repair or standardized useful OBD is turning into some bullshit quick though, although car stuff can be intuitive if you have a handle on how the basics work. Right to repair might save us, but right now you need new canbus items coded into a car. BMWs require you to code in new batteries every time you change it, in the twin turbo V8s, under warranty they change the battery every oil change. If you want to see a failure of modern engine building techniques, look no further than the BMW N63. quote:- check the timing chain for stretch; replace if necessary This is on top of it needing a new battery every oil change because it only charges the battery when you're coasting and the cooling system keeps running off the battery after you shut the car off to save the turbos.
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Oct 17, 2017 22:02
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