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Toyota shows a smoother autonomous Lexus for CES

Toyota is bringing a new research vehicle to CES. The TRI-P4 autonomous driving test vehicle, based on the Lexus LS500h, is a major step ahead, according to Toyota, as it has improved computing power and additional cameras for better reaction times. Earlier test mules have also used the LS as a basis, and the shift to the new, fifth generation LS brings chassis and steering-control benefits, so the vehicle's movements are smoother in automated mode. The camera tech has also been better integrated into the vehicle design, courtesy of CALTY in Ann Arbor, Michigan. Development has been swift, as the TRI's P2.1 car was unveiled in 2017. The P4 car will be used for Toyota Research Institute's Guardian and Chauffeur mode development. The two tiers differ somewhat, as TRI's Ryan Eustice explains: "Our Chauffeur development is focused on full autonomy, where the human is essentially removed from the driving equation, either completely in all environments, or within a restricted driving domain. Guardian, on the other hand, is being designed to amplify human performance behind the wheel, not replace it. The introduction of the new P4 platform will help us accelerate the development of both tracks when it joins our fleet this spring." The vehicle's situational awareness is boosted by two extra cameras facing on the sides, and a new imaging sensor both forward and rearward. Toyota says the P4's lidar setup is a carryover from the previous platform, but that its machine learning is much improved by its more powerful computer setup. The electricity required by the P4's computing power also comes from the hybrid battery, and as the computer "brain" is now housed vertically against the rear seat's backing, actual trunk space has been freed. More LS500hs will begin to be modified into TRI-P4 vehicles during spring 2019. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

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.

Post-earthquake, Toyota prepares to reopen some plants in Japan

Toyota will restart vehicle production at most of its closed factories in Japan next week, but the factories that build the Mirai and many Lexus models will remain closed through at least April 28 and possibly longer. The earthquakes around the city of Kumamoto on the island of Kyushu forced the automaker to stop most of its assembly throughout the country due to a lack of parts supply. Toyota will reopen the plants in phases from April 25 to 28. However, the Motomachi factory with its LFA works, which makes the Mirai, and the Miyata factory will remain closed. These sites also build the Lexus NX, RX, ES, GS, and CT, according to Toyota. The automaker didn't say when production would begin again or how this would affect vehicle supply. "In the update, we received this morning from TMC, they said that at this stage it is too soon to tell what the impact on production will be, so we can't say yet whether there might be vehicle shortages in the US," spokesperson Aaron Fowles told Autoblog. While the quakes were focused on Kyushu, they damaged Aisin Seiki factories, which supplied parts to Toyota plants across the country. The automaker worked with its partner to import the necessary components from China and Mexico, and Aisin started moving molds from the damaged plants to operational ones in Japan, which gets production under way sooner. Automotive News Europe estimates the week of lost production cuts total assembly by 90,000 vehicles. It could cost Toyota the equivalent of $458.2 million to $641.5 million. The company could make up some of the losses through overtime. Toyota says these plans are subject to change because on ongoing tremors in the region, which could cause more damage. Reuters reported there was a magnitude 5.5 aftershock in the Kumamoto area on April 19. So far, the quakes have killed at least 47 people and around 100,000 people have moved to evacuation centers. Toyota to Restart Production on Vehicle Assembly Lines in Japan from April 25 Apr. 20, 2016 Toyota City, Japan, April 20, 2016-Between April 25 and 28, Toyota will restart production on most of its vehicle assembly lines in Japan. On April 17, Toyota announced that, due to parts shortages resulting from the severe earthquakes that struck Japan's island of Kyushu last week, production would be suspended on almost all of its vehicle assembly lines in stages between April 18 and 23.