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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.

Mazda RT24-P brings KODO style to the Rolex 24 at Daytona

In addition to its new CX-5 crossover, Mazda revealed its new racecar, the RT24-P, at the Los Angeles Auto Show. The car has been designed for the Daytona Prototype international (DPi) class in IMSA's WeatherTech SportsCar Championship and will make its racing debut at the Rolex 24 at Daytona. It was designed using Mazda's KODO design language, which the brand has so successfully applied to its road-going cars. The racer's relation to Mazda's production cars is made obvious by the small five-point grille at the tip of the RT24-P's nose. While plenty of credit needs to go to the stylists and aerodynamicists at Mazda and Multimatic, one of the companies Mazda partnered with on the car, some of the credit needs to go to IMSA's new DPi rules for 2017. The new DPi class is very similar to the LMP2 class that it competes with in the WeatherTech series, with some noteworthy differences. The DPi class allows manufacturers to create unique bodies and engine packages for one of the four chassis available. The LMP2 class requires competitors to use the chassis companies' bodies, and are restricted to one engine package. View 14 Photos As for the powertrain, the Mazda RT24-P uses a turbocharged 2.0-liter four-cylinder that puts out roughly 600 horsepower. Mazda used the same engine in its P2-class race car last season. Mazda's body and engine will ride atop a chassis developed by Riley Technologies and Multimatic. You may remember that latter company as the one that developed the awesome spool valve shocks on the Chevrolet Colorado ZR2. The RT24-P will be campaigned by Speedsource, a company that has been racing Mazdas in American endurance racing for years, including last year's P2 cars. Considering Mazda's success in making such a cool race car, we're excited to see what other manufacturers do with the extra design freedom of the DPi class. Both Chevrolet and Ford competed last year in the WeatherTech prototype class with Daytona Prototype-style cars, and Honda competed with an LMP-style racer. Depending on what other makes decide, this year's WeatherTech line-up could have some nifty designs. Related Video: Related Gallery 2017 Mazda RT24-P race car View 9 Photos News Source: Mazda, IMSAImage Credit: Live photos copyright 2016 Drew Phillips / Autoblog Motorsports LA Auto Show Mazda Racing Vehicles Videos Original Video 2016 LA Auto Show

Mazda bringing electric car to the Tokyo Motor Show

In June this year, Mazda CEO Akira Marumoto told Automotive News Europe that "the first Mazda battery-electric vehicle will hit the market next year." Earlier this month, Mazda invited journalists to Oslo, Norway, to learn more about the automaker's EV plans and drive a prototype of the e-TPV powertrain, the letter designation standing for electric-Technology Prove-out Vehicle. Mazda had dressed the e-TPV production-intent powertrain under bodywork from the carmaker's new CX-30 compact crossover. Automotive News reports that Mazda will unveil its actual EV at the Tokyo Motor Show next month, which a Mazda spokesperson confirmed.     Mazda developed the powertrain in-house, engineered for buyers in dense urban environments. A 35.5-kWh lithium-ion battery powers a single electric motor wiith 141 horsepower and 195 pound-feet of torque. Range is said to be 200 kilometers (124 miles) on the city cycle, but that's likely on the Japanese or WLTP cycle that returns larger numbers than the U.S. EPA. The mechanical figures lie between the 28-kWh battery of the Hyundai Ioniq Electric and the 40-kWh battery of the standard Nissan Leaf. The EPA rates the less-powerful Ioniq for 124 miles of range, while the more powerful Leaf can go 150 miles. AN writes that Mazda's initial planned markets include Japan, China, and Europe where 124 miles is plenty for day trips. A version serving markets known for urban sprawl would employ a rotary engine range extender, a tech tidbit Mazda's spoken about regularly over the past year.   Iain Curry of Australian outlet Chasing Cars had good things to say about the e-TPV prototype he drove. Curry said the experimental car didn't offer strong regen braking and piped a mild four-cylinder soundtrack into the cabin to give drivers a connection to the ICE experience they're familiar with, but there's no word on whether the production vehicle will be set up the same way. Curry praised the handling, saying the e-TPV felt similar to a Mazda3 on the go and around corners. We'll get more concrete info next month in Japan. The show car in Tokyo will be a "brand-new model" on a new EV-specific platform, and don't be surprised by a compact crossover shape since the carmaker CEO said, "Our global crossover mix is currently about 60 percent."