2012 Toyota Sienna Xle on 2040-cars

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The ugly economics of green vehicles

It's fair to say that most consumers would prefer a green vehicle, one that has a lower impact on the environment and goes easy on costly fuel (in all senses of the term). The problem is that most people can't – or won't – pay the price premium or put up with the compromises today's green cars demand. We're not all "cashed-up greenies." In 2013, the average selling price of a new vehicle was $32,086. The truth is that most Americans can't afford a new car, green or not. In 2013, the average selling price of a new vehicle was $32,086. According to a recent Federal Reserve study, the median income for American families was $46,700 in 2013, a five-percent decline from $49,000 in 2010. While $32,000 for a car may not sound like a lot to some, it's about $630 a month financing for 48 months, assuming the buyer can come up with a $6,400 down payment. And that doesn't include gas, insurance, taxes, maintenance and all the rest. It's no wonder that a recent study showed that the average family could afford a new car in only one of 25 major US cities. AutoTrader conducted a recent survey of 1,900 millennials (those born between 1980 and 2000) about their new and used car buying habits. Isabelle Helms, AutoTrader's vice president of research, said millennials are "big on small" vehicles, which tend to be more affordable. Millennials also yearn for alternative-powered vehicles, but "they generally can't afford them." When it comes to the actual behavior of consumers, the operative word is "affordable," not "green." In 2012, US new car sales rose to 14.5 million. But according to Manheim Research, at 40.5 million units, used car sales were almost three times as great. While the days of the smoke-belching beater are mostly gone, it's a safe bet that the used cars are far less green in terms of gas mileage, emissions, new technology, etc., than new ones. Who Pays the Freight? Green cars, particularly alternative-fuel green cars, cost more than their conventional gas-powered siblings. A previous article discussed how escalating costs and limited utility drove me away from leasing a hydrogen fuel cell-powered Hyundai Tucson, which at $50,000, was nearly twice the cost of the equivalent gas-powered version. In Hyundai's defense, it's fair to ask who should pay the costs of developing and implementing new technology vehicles and the infrastructure to support them.

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.

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.