2003 Mazda Protege Dx Sedan 4-door 2.0l on 2040-cars

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Japan plans real-world diesel emissions test after companies fail

Japan's transport ministry plans to start real-world diesel emissions tests after an experiment found four models from Toyota, Nissan, and Mitsubishi that produced more nitrogen oxide (NOx) emissions than the nation's rules allow, according to The Japan Times. Regulators there usually only perform emissions checks in the lab. The VW diesel scandal has everyone double-checking their figures. Diesel versions of the Toyota Hiace van, Land Cruiser Prado, and Nissan X-Trail produced up to 10 times more NOx than allowed. The Mitsubishi Delica D:5 was up to five times over the limit, The Wall Street Journal reports. There was no evidence of defeat devices in the vehicles. Mazda performed well in the experiment, though. The CX-5 passed with nearly the same results on the road and in the lab. The Demio, better known as the Mazda2, did nearly as well with only slighter higher figures in the real world than in the controlled setting. The experimenters theorized the reason for the excessive emissions was that cold weather caused the engines' software to shut off the exhaust gas recirculation to prevent damage, according to the WSJ. However, this behavior also increased NOx production. Toyota, Nissan, and Mitsubishi don't have to worry about punishment from the transport ministry because this check was just an experiment. Their models already passed the mandated lab tests, which was the only requirement, according to The Japan Times. As governments begin greater real-world emissions tests, the results suggests diesels aren't very clean. A recent check in France found models from Ford, Renault, and Mercedes-Benz that didn't perform up to the standards. Regulators in India conducted similar evaluations and ordered VW to recall over 300,000 vehicles. Related Video:

Japanese automakers welcome North American trade deal, fear what's next

TOKYO — Toyota, Nissan and Mazda welcomed on Tuesday the revised North America trade deal that left Japanese automakers unscathed, but they may face a bumpy ride when Washington and Tokyo hold new talks on over $40 billion of annual U.S. auto imports from Japan. The United States and Canada reached an agreement on Sunday to update the 1994 North American Free Trade Agreement after Washington had forged a separate trade deal with Mexico in August. The updated deal effectively maintains the auto industry's current footprint in North America, and spares Canada and Mexico from the prospect of U.S. national security tariffs on their vehicles. Mazda, which ships cars to the United States from Mexico and Japan, called the deal a "big step forward". Nissan, which makes the cars it sells in the United States locally as well as in Mexico, Japan and other countries, said it was "encouraged" by the agreement. Toyota, Japan's biggest automaker, said it was "pleased" that a basic deal was reached. Other automakers were not immediately available for comment. While the deal has removed the risk that the disintegration of the pact would have posed to automakers, bigger risks loom large for Japanese firms as a chunk of the roughly 7 million cars they sold in the U.S. last year were shipped from Japan, and a trade deal between Washington and Tokyo has yet to be agreed. The United States and Japan last week agreed to begin fresh trade talks, with U.S. President Donald Trump seeking to address Japan's $69 billion trade surplus, of which nearly two-thirds comes from auto exports. Washington is also investigating the possibility of slapping 25 percent tariffs on auto imports on national security grounds, although it has agreed with Japan to put any new tariffs on hold during the talks. Analysts say the United States may take a tougher stance on auto imports from Japan than from its neighbors. "If Japan requests an exemption from the 25 percent tariffs under consideration, Washington could propose a more strict cap on imports than it agreed to with Mexico and Canada," said Koji Endo, senior analyst at SBI Securities. "That would be a risk." This could be a big blow to Japan, as the United States is a key source of revenue for Japanese automakers including Toyota, Nissan and Honda. The U.S. market accounts for a quarter or more of their annual global vehicle sales, and of their total U.S.

Watch what happens inside a rotary engine

Since it looks like Mazda may very well revive the Wankel rotary engine as a range extender for electric cars, there's no better time to become reacquainted with the quirky internal-combustion engine. And there's hardly a better way to become reacquainted than by peering into a running rotary engine, which you can do with the video above. The video comes to us from the YouTube channel Warped Perception. The channel has already shown what happens inside a conventional internal-combustion piston engine by putting a clear cylinder head on top of a flathead engine. This new video shows off the rotary engine by adding a clear side to a tiny model-airplane engine, something that we weren't aware existed and are glad to know about now. Despite the tiny size, the engine is functionally almost exactly like the bigger versions you'll find in Mazdas from about 1967 to 2012. It has intake and exhaust ports on the edges of the rotor housing, and the triangular rotor swings about in a peanut-shaped housing. For maximum effect, jump to right around the 7:40 timestamp. This is the point at which a bit of acetylene is added to the air-fuel mix for a brighter flame. It's at this point that you can really see when the mixture combusts and how the pressure of the flame pushes the rotor to produce rotational motion. Each stage of the video does slow things down to make everything as clear as possible. Even if you already knew how rotary engines worked, it's still fascinating to watch, first because it's something you don't get to see usually, and also because of the engine's elegant simplicity. Related Video: Image Credit: YouTube / Warped Perception Weird Car News Mazda Technology Videos rotary rotary engine