2007 Toyota Rav4 Limited 4x4 on 2040-cars

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How Toyota's 100-year textile history influenced FCV hydrogen fuel cell car

Turns out, Toyota had a surprising ace in the hole when it came to building the new fuel tanks for the FCV hydrogen fuel cell car, which is coming next year. Well before Toyota became the Toyota Motor Company, it was the Toyota Industries Corporation and it made textile looms. This is important because the main structure of the hydrogen tank is wound carbon fiber. When Toyota set out to increase the strength of the tanks to hold hydrogen stored at 10,000 psi (up from 5,000 in the previous tanks), it was able to draw on its 100-year-old history as it designed its car of the future. "A lot of that textile experience came back when we did the tank wrapping." – Justin Ward "We have a lot of experience with textiles," Justin Ward told AutoblogGreen at the 21st World Congress on Intelligent Transport Systems (ITS) in Detroit this week, "and a lot of that textile experience came back when we did the tank wrapping." On top of being able to hold the higher-pressure hydrogen, Toyota's first attempt to build its own hydrogen tank was six times faster than the industry standard, so it saved time and money as well as working better. The company will also be able to inspect its own tanks. Ward is the general manager of powertrain system control at the Toyota Technical Center and hydrogen vehicles are something he knows a lot about. The reason for the stronger, 10,000-psi tanks is because the 5,000-psi tanks only offered around 180-200 miles of range, even with four tanks in the early $129,000 FCHV Highlander hydrogen prototypes. The FCV only has two, but they will able to deliver the 300-mile range that customers told Toyota they wanted. Dropping the number of tanks not only obviously reduced the cost for the tanks themselves but also the number of valves and hoses and other components you need. Despite the benefits of higher compression, going much higher doesn't make sense. 10,000 psi is the "natural progression," Ward said, because "you start to bump up against compression inefficiencies." Think of an air compressor. When hydrogen is produced at a wastewater treatment plant or a reforming site, Ward said, is it at around ambient pressure (14 psi). That has to be raised, using compressors, all the way to 10,000 psi. "That takes energy," Ward said, "and every doubling of pressure adds another doubling of energy needed, so it starts to add up pretty fast if you go too high." Component specifications are also fine at 10,00 psi, but more difficult at higher levels.

Honda, Hyundai top car residual value / depreciation awards list

J.D. Power announced its 2022 U.S. ALG Residual Value awards Thursday, with Honda and Hyundai topping the charts at three models apiece in the industry-standard study. The term "residual" is an industry projection of how well a car will hold its resale value three years from the original purchase date – a key metric in calculating lease costs and projecting new-car depreciation.  Award winners included several enthusiast-friendly options, including the BMW 2 Series, Dodge Charger, Subaru WRX, Mercedes-AMG GT and Toyota Tacoma. Even the Ford Bronco was recognized, beating out the Jeep Wrangler in the Off-Road Utility segment. That may seem odd given the car's issue-plagued launch, but scarcity apparently trumps quality control issues over the longer term. Here's a scrolling complete list of winners broken down by segment: “Accurately forecasting residual values in the auto industry is a key factor in assessing an estimated $225 billion lease portfolio of vehicles in the United States,” said ALG VP Eric Lyman in the company's announcement. "The brands and vehicle models that rise to the top demonstrate that they score well across the award programÂ’s criteria, including manufacturersÂ’ superior design and quality." ALG looks at several factors to determine future value, which is especially tricky with new models. For 2022, 16 different brands were recognized across 29 segments. Behind Honda and Hyundai, Audi, Kia, Mercedes-Benz, Land Rover and Subaru all managed to chart with two different models. Here's the rundown of those who won in more than one category: Honda Civic Honda Passport Honda Odyssey Hyundai Accent Hyundai Kona Hyundai Kona EV Audi A6 Allroad Audi Q3 Kia K5 Kia Telluride Land Rover Range Rover Velar Land Rover Discovery Mercedes-AMG GT 4-Door Mercedes-Benz Metris:  Subaru  WRX and  Subaru Forester Toyota Tacoma  Toyota Tundra "The award process consists of evaluating 284 models through analysis of used-vehicle performance, brand outlook and product competitiveness," the announcement said. "Eligibility for a brand award requires a manufacturer to have model entries in at least four different segments. To account for differences across trim levels, model averages are weighted based on percentage share relative to the entire model line."   Audi Honda Hyundai Kia Land Rover Mercedes-Benz Subaru Toyota

Toyota finds 10% MPG improvement in hybrid PCU

Keeping up its from-all-angles approach to efficiency, Toyota has found yet another way to eke out up to ten percent more precious MPGs in its hybrid vehicles, this time electronically. The automaker has announced the development of new silicon carbide (SiC) power semiconductors for use in power control units, which it will begin testing on Japanese roads within the next year. The PCU using the silicon carbide compound offers less electrical resistance, which improves efficiency when passing current between the battery and electric motor. It also loses less power after shutting off, and can operate at a higher frequency. The net power loss of the new PCU is just one-tenth of the current silicone-only version (the latter accounting for 20 percent of total electrical power loss in today's hybrids). The result, so far, is a claimed five-percent improvement in fuel economy in test vehicles, with the potential of ten percent by the time the new SiC power semiconductor comes to market. Additionally, the carbide wafers allow for smaller a power module, coil and capacitor, thus allowing the entire PCU to be 80 percent smaller (see the side-by-side comparison in the accompanying photo, which you can click to enlarge). We've got a while to wait before we start to see the carbide technology to start making a real-world impact. Toyota aims to begin using the SiC units in 2020. By then, with improvements in the company's other key efficiency factors - engine technology and aerodynamics - cars like the Prius will likely see significant gains in fuel economy. Read more in the press release below. Toyota Develops 'Diamond-like' Computer Chips to Boost Hybrid Mileage May 20, 2014 Toyota City, Japan – Toyota is using one of the hardest materials in nature after diamonds to develop a semiconductor chip it hopes will improve the fuel efficiency of its hybrids, such as the Prius, by as much at 10 percent. The company and its partners announced today that they have developed a silicon carbide (SiC) power semiconductor for use in automotive power control units. Toyota plans to begin test-driving vehicles with the technology on public roads in Japan within a year. The chips, made from carbide - one of the hardest materials in nature, theoretically have superior characteristics such as one-tenth the electrical power loss and 10 times the drive frequency. Toyota said the chips would also allow it to reduce the size of current automotive power control units by 80 percent.