2003 Mazda 6 S Sedan 4-door 3.0l 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.

Recharge Wrap-up: Mazda, Toyota earn environmental awards

Electric mobility nonprofit Drive Oregon has launched a campaign to invite the electric car industry to perform testing in the state. The campaign tells companies to, "Test Drive the Future in the Living Lab," citing Oregon's density of EV owners and charging infrastructure, varied terrain and climate, funding opportunities, and the state's technological reputation as the "Silicon Forest." Plus, as Drive Oregon Executive Director Jeff Allen, points out, "if you really screw things up here, it doesn't make as much noise as it would in California." Already, Jaguar Land Rover has announced plans for an Innovation Incubator in Oregon. Read more at Green Car Reports. Mazda's new paint system has won the Prime Minister's Award in the category of Manufacturing and Production Process at the 6th Monodzukuri Nippon Grand Award ceremony. Mazda's Aqua-tech paint system significantly reduces emissions of volatile organic compounds (VOCs) and CO2. The Aqua-tech system uses a water-based color basecoat and a urethane clear coat to reduce VOC emissions by 57 percent. It consolidates the painting process and reduces energy in paint-booth air-conditioning and flash-off processes to reduce energy consumption. It also allows Mazda to create such colors as Soul Red, which looks quite nice on the MX-5 Miata. Read more at Green Car Congress, and learn all about the Aqua-tech paint process from Mazda. The Toyota Mirai has received a 2015 Environmental Award from Austrian automobile club ARBO. The hydrogen fuel cell car took the prize in the category of Current Innovative Environmental Technologies. "At Toyota, we believe that various technologies will co-exist, ranging from EVs to hybrids to the most innovative of all, the fuel cell car," says Gerald Killmann, Vice President R&D of Toyota Motor Europe, in a comment thanking ARBO. "Mirai is a core component of Toyota's vision for a sustainable mobility society, one that allows us all to move freely in comfort and safety in an environmentally friendly, sustainable manner." Read more in the press release below. Vienna, Austria- November 5th - The Austrian automobile club ARBO* (Auto-Motor und Radfahrerverbund Osterreiche) has awarded the Toyota Mirai with the "2015 Environmental Award". This Award was received during a gala ceremony held yesterday in Vienna, where the Toyota Mirai was awarded in the category of "Current Innovative Environmental Technologies" . The jury consisted of ARBO automotive experts.

Ruminations in winter | 2016 Mazda MX-5 Miata long-term update

Winter is an odd time for our 2016 Mazda MX-5 Miata Club long-term tester. In the summer, the track beckons. Fall and spring bring top-down adventures at sunset. But our Miata is a little out of its enthusiast element when the weather is harsh and our moods grow as gray as a January day in Michigan. Sure, there's the occasional snowstorm, and equipped with winter tires the Miata can be a fun toy. But what about when it's just cold and dreary? We had a lot of time to reflect on our MX-5 these past few months, and we still managed to find enjoyment in the little things - even though admittedly this is not the time of year when the Miata shines. For starters, we taught associate video producer Amr Sayour how to drive a stick shift with the Miata. With its agreeable clutch and short throws, the six-speed manual was the perfect learning instrument for Sayour. His teacher, Adam Morath, actually had to show him how to stall. Arguably, learning to drive a manual isn't a little thing, but it was these run-of-the-mill events that showcased the Miata could be more than tolerable in winter. Associate Editor Joel Stocksdale used it for a 500-mile roundtrip to pick up a new pet and found it was a little tight for dog and driver. Though Stocksdale still enjoyed the sports-car feel, he came to the conclusion that "Miata is always the answer, but not always the best one." We also quickly realized the MX-5 isn't a great commuter car, nor did we expect it to be. It's low to the ground. It's loud. The small cabin has a greenhouse effect, and the windows fog easily. "If you have a Miata, it will creak and rattle in the winter. A lot. Nothing out of the ordinary here - this is a convertible with a lot of flexy parts - but something the casual shopper might not be aware of," Editor-in-Chief Mike Austin noted. Still, he found ways to have fun. "On the upside, winter tires = low-speed power oversteer." We had a lot of time to reflect on our MX-5 these past few months, and we still managed to find enjoyment in the little things. Speaking of those snowshoes, Stocksdale said they made our Mazda a "perfectly acceptable winter ride." Keeping the traction control on, he navigated his neighborhood roads in packed snow with little trouble. Like Austin advised, be aware of the ground clearance; Stocksdale got hung up in deep snow while attempting to scale his driveway.