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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-FC concept is a preview of the next LS [w/video]

As far as flagship luxury sedans go, the Lexus LS is one of the oldest on the market. But the upscale Japanese automaker is out to fix that in short order. And to give us a taste of what's to come, it's presenting the concept you see here at the Tokyo Motor Show today. Called the LF-FC, the show car clearly points the way forward for the next-generation LS. The design adopts the latest take on the brand's "L-finesse" styling language, with a large, spindle-shaped front grille leading to sharp creases cutting their way across the entire surface. Lexus refers to the roofline as approaching that of a four-door coupe, though it clearly places more of an emphasis on rear-seat space. Power comes from a conceptual hydrogen fuel cell whose components have been scattered throughout the vehicle to optimize weight distribution. The fuel cell drives the rear wheels and sends power to hub motors in the front wheels as well for all-wheel-drive capability. Those 21-inch rims are made of carbon fiber, with aluminum spokes, to minimize unsprung weight. Naturally, Lexus has equipped the concept with all the latest electronic aids to track the flow of traffic and even drive autonomously through it. Of course a vehicle like this is designed around the driver and occupants. The white and brown interior space features four individual bucket seats, because really, who wants to dream of riding in the middle? Interior appointments look suitably tasteful, all done in satin-finish wood and metal with white and brown leather, and would look at home on the next generation of first-class aircraft cabins. Lexus has equipped the concept with gesture control that incorporates a floating holographic image to show users where to place their hands to operate the audio and ventilation systems touchlessly. In typical concept style, the LF-FC sits wider and squatter than the production sedans at which it takes aim. More telling, however, is the overall length: at 208.7 inches, it's a few thumbs longer than even the extended version of the current Lexus LS, and a touch longer than the current long-wheelbase Mercedes S-Class, Audi A8, BMW 7 Series, Jaguar XJ, and Maserati Quattroporte. We're looking forward to seeing the production version in the form of the next LS in due course to see how it measures up against the competition, and not just in terms of size. Related Video: Lexus LF-FC Flagship Concept Revealed at the Tokyo Motor Show TOKYO (Oct.

Toyota reveals latest autonomous tech test bed

Toyota revealed its latest autonomous technology effort Friday, a sophisticated Lexus LS 600hL prototype that showcases its plans to advance in the emerging field. The Lexus is the first developed entirely by the company's in-house Toyota Research Institute and it will focus on the car's ability to learn and see behavior on the road. Toyota is showing the car at the Prius Challenge event at Sonoma Raceway. The Lexus uses Lidar, radar, and sensors, which potentially reduce reliance on mapping. The prototype advances Toyota's last concept vehicle shown at the Consumer Electronics Show in 2013. This one is said to be more flexible and it will focus on Toyota's two autonomous tech pillars, called Guardian and Chauffeur. Guardian is meant to improve safety features, while Chauffeur moves toward full autonomy. "We believe Guardian can probably be deployed sooner and more widely than Chauffeur, providing high-level driver-assist features capable of helping mitigate collisions and save lives, sooner rather than later," Toyota Research Institute Gill Pratt said in a statement. Related Video: Green Lexus Toyota Autonomous Vehicles Luxury Sedan lexus ls