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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.

Toyota announces new, more efficient powertrains for 60 percent of its vehicles by 2021

In the face of increasingly strict standards on fuel economy and CO2 emissions, Toyota announced today that it's introducing a new hybrid system, a new 2.5-liter direct-injection inline four-cylinder engine, and two new transmissions – an eight- and a 10-speed. The development of all of these components will be based around the Toyota New Global Architecture, or TNGA. Development of the systems has moved forward and the new powertrains will find their way into vehicles starting next year. TNGA, like Mazda's Skyactiv technology, is a complete design philosophy that focuses on more than just a clean or efficient engine. The first vehicle to deploy the TNGA platform was the current, fourth-generation Prius. With TNGA, Toyota focused on improving handling, ride, and braking performance. The new powertrains are meant to compliment this new platform by being both engaging to drive and fuel efficient. Since TNGA can be adapted for front-, rear-, or all-wheel-drive layouts, it's capable of underpinning a number of potential products. Toyota is arguably the leader in hybrid technology, and taking lessons learned in the development of the current Prius, the automaker has developed the new Toyota Hybrid System II, or THS-II, for rear-wheel-drive applications. Performance has improved versus the outgoing model, and Toyota says efficiency, especially at high speeds, has been improved. In addition, the system's use in plug-in vehicles has been improved. For the first time, the electric motor will be able to provide direct driving power, whereas before it simply acted as a generator. The new, naturally aspirated 2.5-liter four-cylinder, like the THS-II, has been designed around the TNGA platform. Most notably, the thermal efficiency of the engine has been improved. This means a higher output and improved exhaust and cooling. The new engine, which works in both traditional and hybrid applications, will proliferate through the Toyota and Lexus lineup. Toyota's two new automatic transmissions, like the new engines, are based on the TNGA system. That means a lighter and more compact design relative to similar transmissions. The 10-speed is intended for rear-wheel-drive Lexus products like the GS and LS. The tuning has been adjusted to improve response and smooth out shifts, though it's impossible to say how much it's been improved without getting behind the wheel.

Lexus promises to unveil two updated models at Pebble Beach

Lexus has announced it will stage the global debuts of two updated models at Pebble Beach later this week. But it isn't saying which models they will be. However we can take an educated guess or two. Two of the oldest nameplates in the Lexus lineup at present are its flagship models: namely, the LS sedan and the LX sport-ute. The original LS was first introduced back in 1989, with the current fourth-generation model rolled out in 2006. (That's the Pebble Beach edition of the 2009 LS 600h pictured above.) It's undergone incremental updates in the decade since, with the last one having arrived in 2012. With much newer examples of the Mercedes S-Class and BMW 7 Series having recently been launched, Toyota will likely want to keep its flagship sedan up to date and competitive with newer rivals. Meanwhile the LX first launched in 1995 as a rebadged and luxed-up version of the Toyota Land Cruiser. The current third-generation model arrived in 2007, and was updated in 2012 alongside the aforementioned LS sedan. Sales of the LX have been floundering, spurring Lexus to potentially launch an entirely different flagship crossover to take its place. But before that happens, it is expected to launch another facelift for the existing model. Photos of that updated version have already leaked out and begun circulating, so we wouldn't be surprised to see the new LX 570 debut in Monterey as well. Both are expected to adopt more aggressive styling in line with other, newer models in the lineup, along with the latest technologies Toyota has to offer. Whatever form they take, we won't have to wait long to find out what Lexus has in store for us. The unveiling of both its freshly updated new models is set to take place on Thursday, so watch this space. Related Video: MEDIA ADVISORY - LEXUS TO UNVEIL TWO UPDATED MODELS AT PEBBLE BEACH August 10, 2015 -- Lexus plans to stage the global premiere of two updated models in Pebble Beach during the days leading up to the 2015 Concours d' Elegance. The reveal will take place at 7 p.m. PDT, Thursday, Aug. 13, and all materials will be available on www.LexusNewsroom.com simultaneously.