2012 Mazda Miata Mx-5 Grand Touring on 2040-cars

Auto blog

Mazda Skyactiv-X Review | The revolution begins with a squeeze-bang

The matte black Skyactiv-X prototype looks like a rough Mazda3, perhaps reconstructed after a bad wreck by an over-enthusiastic owner of a spot welder and lots of gaffers' tape. Ribbed ducts poke out of the dash sending two breaths of conditioned air to no one in particular. Even its revolutionary engine, the thing we're here to experience, is entombed in a massive, nondescript cover to mask its unseemly noises. It's a wild, strange way to meet a very unconventional vehicle that promises diesel-like fuel economy, a wide torque band, and an exotic method for burning less gas than ever before. It takes a few hours for Mazda's engineers to explain the fundamental principles of operation. For more detail, read our Skyactiv-X Spark Controlled Compression Ignition explainer, but here's a very brief overview. Skyactiv-X marries some traditional gasoline engine characteristics with a novel form of compression ignition called SPCCI. The key for Skyactiv-X is to use very high compression in the cylinder and an extremely lean fuel-air mixture. Squeezed right to the cusp of getting hot enough to blow up all on its own (which is very hard to predict), a squirt of extra gas and a spark interject to cross that compression-ignition threshold in a controlled and predictable manner. See the animation below: That takes a few essential components to get just right. One is a massive amount of computer processing power and some pressure sensors in the individual cylinders, because the ambient conditions change how and when these things happen. Skyactiv-X uses a clutched supercharger to pump in additional air when needed to nail the mixture precisely, and high-pressure injectors to get the low ratios of fuel to disperse properly in the chamber. And since it operates like a conventional gasoline engine sometimes, it uses valve timing to lower the very high compression ratio so it doesn't reach combustion ignition in that mode. In practice, the Skyactiv-X runs in compression ignition mode most of the time. In practical terms, that means it drives like a torquey gasoline Skyactiv engine. The torque curve is broad and flat — diesel-like in that respect. That also means it can get away with using a six-speed transmission and a lower final drive for better response. There's enough grunt and economy together that Mazda can let the engine spin faster — at 60 mph, it's running at roughly 1,000 more RPM than a similar gas engine, with greater efficiency.

Takata air bag recall list

The National Highway Traffic Safety Administration confirmed yesterday that 33.8 million vehicles with Takata airbags are going to be recalled. It's the largest recall in automotive history. The already record-breaking rate of automotive recalls this year shows no signs of slowing down, especially since millions of cars with defective airbags made by global supplier Takata are under ongoing scrutiny. The federal government is warning owners that inflator mechanisms in the air bags can rupture, causing metal fragments to fly out when the bags are deployed. The faulty air bags have already been blamed for multiple deaths. How do you know if your vehicle is safe? The National Highway Traffic Safety Administration released an updated list of vehicles under recall. Sometimes however, the government's website will crash and the list may not be complete. Check your VIN at the NHTSA website to make sure. The list of cars affected by the recall has not been released, but seem to span multiple models over the years for many of the automakers.

Mazda seeks $2.8 billion in loans to ride out pandemic

TOKYO — Mazda has sought loans totaling about 300 billion yen ($2.8 billion) from Japan's three megabanks and other lenders to ride out the coronavirus epidemic, a source with direct knowledge of the matter said on Saturday. The megabanks — Mitsubishi UFJ Financial Group, Sumitomo Mitsui Financial Group and Mizuho Financial Group — along with the Development Bank of Japan, Sumitomo Mitsui Trust Holdings and others are set to agree, with some already having extended the loans, the person said, declining to be identified because the information is not public. All three megabanks declined to comment on the loan request, which was reported by the Nikkei business daily earlier. Mazda did not immediately respond to a request for comment.    Mazda, like most other automakers, has reduced or halted production at factories around the world for the past few months as governments try to limit the spread of the new coronavirus.     Mazda's car sales and balance sheet had been weak even before the virus slammed the brakes on demand, with its interest-bearing debt of 650 billion yen far exceeding its cash and cash equivalents, according to the Nikkei.    Mazda is scheduled to announce its financial results for the year ended in March on Thursday. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. 2019 Mazda3 Press Conference In 15 Minutes