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Five automakers now being investigated by NHTSA for airbag woes

It appears that Toyota's renotification to owners of recalled vehicles from last year is just the tip of the iceberg for what could potentially be a much larger industry-wide recall. The National Highway Traffic Safety Administration is opening a preliminary evaluation investigation into roughly 1.1 million vehicles from Chrysler, Honda, Mazda, Nissan, Toyota and parts supplier Takata regarding faulty airbag inflators in several models.
NHTSA has received six reports - three directly, two from Takata and one from Toyota - of vehicles with ruptured airbag inflators from 2002-2006, which resulted in three injuries. So far, all six incidents have occurred in high humidity areas like Florida and Puerto Rico. According to Toyota's latest recall announcement, the inflators may have an improper propellant that could cause it to rupture in a crash and the bag to deploy abnormally.
This new investigation follows a previous recall from April 2013 of about 3.4 million vehicles worldwide for the airbag inflators from Takata. As Autoblog reported, Toyota jumpstarted the new situation when it found that the original list of serial numbers for the faulty part was incomplete and discovered more cars in need of replacement. Honda and Nissan told us that they were investigating whether further models would need called in again as well. Mazda told Autoblog: "Regarding the current Takata situation, we're working closely with NHTSA and investigating the situation, but nothing else to report at this time." Chrysler Group responded to us with the statement: "Chrysler Group engineers are conducting the appropriate analysis. The Company will cooperate fully with the National Highway Traffic Administration."

Recharge Wrap-up: Model X pinch sensor update, Karma plans first store

Tesla has improved Model X pinch sensor function in its latest over-the-air update. As we've seen, the pinch sensors already stop the falcon wing doors from completely shutting when they sense an obstruction. Now, though, the doors retract slightly after the sensors are triggered. While the pre-update doors didn't appear to do as much damage to human fingers as they do to various foodstuffs, it definitely looked uncomfortable, especially when one's hand is stuck in the partially closed door. Now, any pinch that does occur should be brief. See the updated sensors at work in the video above, and read more from Teslarati. Karma Automotive will move to Kawasaki's former headquarters in Irvine, California where it will also open its first store. The revival of the now defunct Fisker will sell its Revero plug-in hybrid through both dealerships and company-owned stores like the one planned for its new two-building campus. The property owner, Bixby, had planned to renovate the site, but now says Karma will make its own improvements. Bixby said it was seeking, "a progressive-minded tenant that would value the unique configuration," and appears to have found just that in Karma. Read more at Electrek, or from the OC Register. San Francisco is asking residents for help in expanding its subways. Using an online tool called Subway Vision, users can draw their own subway lines and stations that they'd like to see built and submit them to planners. Listening to the public is a useful tool for the city because, as Grahm Satterwhite, San Francisco Municipal Transportation Agency's principal planner, admits, "Transportation planners may be too close to a problem to see the solution." This approach allows the subway expansions to "reflect the vision of not just a few transportation planners, but of all San Franciscans," he says. Read more from FastCo.Exist. Toyota is continuing its commitment to Yellowstone National Park with a sustainable Youth Campus for environmental education. The automaker donated $1 million to Yellowstone for the facility, which is seeking Living Building Challenge certification. It will have onsite wastewater treatment for its locally sourced water usage, and will generate all of its electricity needs from photovoltaic panels, with excess to put back into the grid. The campus will have classrooms and residences for students and staff for its youth programs.

Toyota to buck engine downsizing trend, may go larger and turbo-free

Turbocharging isn't really Toyota's specialty, and the Japanese automaker isn't being shy about acknowledging it. Koei Saga, a senior managing officer in charge of drivetrain research and development, says that eschewing turbos and increasing displacement of engines using the Atkinson cycle can produce better power gains without sacrificing fuel economy, Automotive News reports.
Toyota is investing heavily in larger-displacement Atkinson-cycle engines in addition to turbocharged engines, but Saga doesn't think the automaker will use turbocharging across many product lines. He apparently remains unconvinced that the technology "makes the world better."
In Toyota's eyes then, Atkinson cycle engines do make the world better, and here's how. Their pistons complete four processes - intake, compression, power and exhaust - in one revolution of the crankshaft, and the power stroke is longer than the compression stroke. Traditional Otto cycle engines require two crankshaft revolutions to accomplish those same four operations and have equal-length compression and power strokes. Atkinson cycle engines are more efficient, but less power dense, though increasing displacement can offset that shortfall.