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8 things you should know about the Lexus LC 500h powertrain

Lexus unveiled the LC 500h today in The Netherlands, and I got to take a look inside its new hybrid system. On one hand it seems like a box of magic – it combines two seemingly incompatible transmission types into one package. But that's also the ingenious simplicity of the thing. We don't have all of the details on how it all works yet, but here's a rundown of the high points.Efficient business in front, low-key party in the back. What makes it all work is the mullet of transmissions. For the new hybrid transmission, Lexus used the Toyota Hybrid Synergy Drive/Lexus Hybrid System – which consists of an e-CVT with a planetary gearset and two electric motors (one for charging the battery, the other for motivation and regen) – and grafted a conventional four-speed automatic onto the back. The two units actually coexist in one package, with the e-CVT making things efficient and the automatic expanding the capabilities. So at the low end, the system can deliver more torque, and the engine can also run at lower rpm on the highway. It's all thanks to those fixed gear ratios, and it's surprisingly simple.Except it's not that simple. This is where the virtual gear ratios come in. Like current Lexus hybrids, the system has ratios it can call up with the e-CVT. In this case, there are six virtual ratios to complement the four real physical ratios, for a total of 10 "gears" at the transmission's disposal. (Not coincidentally, the V8 LC 500 coupe has a 10-speed automatic.) One of the four fixed gears is always engaged when the car is moving, so the 10 ratios come about from combinations of what the e-CVT in front and the automatic in the back are doing. In other words, all 10 ratios are variations on the four fixed gear ratios, which means that all 10 gears could be considered virtual.It won't use all the gears all the time. In Eco mode, the car will start off on electric power and skip the first couple of "gears." When it's set to Sport or Sport +, the engine will be engaged from a stop and the transmission will select the lowest ratio. The sportier modes will also ignore the top couple of gear ratios.It can drive faster with the engine off. In a Lexus GS 450h with the Lexus Hybrid System, for example, at speeds above 62 mph or so the engine has to start up. This is because something needs to take up some slack from the battery-charging motor-generator or else it will start spinning too quickly.

Lexus LF-1 Limitless looks like a curvy crossover concept

Lexus released a teaser for a new concept that will make its debut at the 2018 Detroit Auto Show, and it has quite the name. The company calls it the LF-1 Limitless, a name that wouldn't sound out of place on a battleship. According to Lexus, the name was chosen because this concept "is a flagship crossover that redefines the boundaries of luxury." Frankly, the boundaries that make up the high-dollar crossover segment are definitely well-tread by now. What we can tell is that the concept's heavily raked D-pillar suggests it will have a coupe-inspired look similar to the BMW X6 and Mercedes-Benz GLC Coupe. The bodywork features many curvy lines and exaggerated wheel arches. It will be interesting if this LF-1 has flagship size to go with its flagship description, which would put it in competition with the upcoming Audi Q8. This concept is well-worth keeping an eye on, since Lexus has a history of previewing future production models with the LF moniker. Examples include 2009's LF-Ch that became the CT 200h, 2012's LF-LC coupe that became the LC 500, 2013's LF-NX that became the Lexus NX crossover, and 2015's LF-FC that became the new LS sedan. Not everything makes it to production, such as the LF-SA mini car, and the LF-C2 that suggested an RC convertible. But there's a strong enough history of production cars coming from LF concepts that this LF-1 could be the preview of a new production model. Related Video:

2018 Technology of the Year Award | We chat with Lexus about the LC 500h's hybrid system

Every year, Autoblog editors test dozens and dozens of the newest vehicles available, sometimes even before they're available. From those vehicles, we select the ones we think provide the most innovative technology in the industry. Then we pare the list down to the very best, test them again, and vote on our winner for Technology of the Year. This year, Lexus's multi-stage hybrid system — as tested in the LC 500h — came out ahead of the rest of the finalists. We chose the 2018 Detroit Auto Show to hand over the award to Lexus Group Vice President and General Manager Jeff Bracken. He was kind enough to sit down with Autoblog Senior Editor Alex Kierstein and Green Editor John Snyder at the Lexus stand to talk about the hybrid system, what it does, and what it means for the future of Lexus and Toyota. Check out the video above, and follow along for all our coverage from the 2018 North American International Auto Show in Detroit, where we are taking a look at all of the new cars and technology that we'll see in the near future. Perhaps the next winner of Autoblog's Technology of the Year award is sitting somewhere on the Detroit show floor. Related Video: Green Detroit Auto Show Lexus Toyota Fuel Efficiency Green Automakers Technology Technology of the Year Coupe Hybrid Luxury Performance Videos Original Video 2018 detroit auto show