1996 Mazda Miata M Edition: Fully Rebuilt Stage 1 Motor From Rs Aizawa No Res Nr on 2040-cars

Auto blog

Mazda files patents for a sequential twin-turbo setup

Mazda has a history of interesting engine technologies, from yesterday's rotary engine to tomorrow's compression ignition engine, and new patents show it still may have some internal combustion tricks up its sleeve. The one on display in these patents isn't especially new in concept, though. A sequential twin-turbocharger setup is something Mazda itself used on the third-generation RX-7. But it's something we haven't seen much of lately. It looks like it could have some possible advantages over older sequential systems, and it has some potential advantages for enthusiasts. First a quick and dirty primer for what makes a sequential twin-turbo system distinct from other twin-turbo systems. In many twin-turbo engines, there are simply two turbos that work together as one bigger turbo. They're the same size, and they spool up at the same time. With a sequential setup, at low rpm, a smaller turbocharger is spooled up first at low-rpm for quicker throttle response, and as the rpm and exhaust pressure increases, a valve opens up that allows a larger turbocharger to also spool up and provide high-rpm boost. That's basically how the Mazda design shown above functions. A big flap blocks off the larger turbocharger exhaust inlet, channeling all the exhaust to the smaller turbo. When more exhaust is available at high rpm, it looks like that flap opens up to spool up the big turbo, too. What's interesting here is that the way the turbochargers are packaged takes up less space than past systems. It looks like both turbos are contained in one unit that shares the same exhaust outlet, meaning the exhaust manifold could be kept simple and compact. In fact, the piping for compressed intake air could also be shared, reducing the amount of piping, which would further decrease the amount of materials and possible failure points. There are a number advantages of making this system smaller. The potential applications of the system are much greater, since it could fit in smaller cars with smaller engine bays. Making the system smaller also means that there won't be as much weight, which is important from both fuel economy and performance standpoints. Finally, the smaller setup likely uses fewer materials, which could make the system cheaper and thus easier to offer on a wider range of vehicles, or at least more profitable for Mazda.

Mazda says 83 percent of new cars bear Skyactiv moniker

Mazda's US sales are down a little bit but the company's fuel economy is almost assuredly up. That's because its fuel-saving Skyactiv drivetrain technology is essentially taking over US vehicles sales. To the tune of about five out of every six vehicles sold, at least. While the Japanese automaker's US sales in February fell 2.4 percent from a year earlier, Skyactiv accounted for 83 percent of its sales last month. Most notably, Mazda6 sales jumped 46 percent from a year earlier, while Mazda CX-5 sales were up 72 percent. The company also celebrated the opening of its factory in Salamanca, Mexico, where it will make models such as the Mazda2 and Mazda3. The company is not resting on its fuel-economy laurels either, apparently. In January, it was reported the company is hard at work on its next-generation Skyactiv technology, which will boost fuel efficiency by as much as 30 percent by using diesel-like high compression. As it is, Mazda had the highest fleetwide fuel economy of any major automaker in the US for the 2013 model year with a 27.5 mile per gallon average, according to the Environmental Protection Agency (EPA). Honda came in second with 27 mpg. Check out Mazda's press release below. MAZDA SKYACTIV® TECHNOLOGY SETS RECORDS IN FEBRUARY - Mazda Celebrates Grand Opening of All-New Production Facility in Salamanca, Mexico - IRVINE, Calif., March 3, 2014 /PRNewswire/ -- Mazda North American Operations (MNAO) today reported February U.S. sales of 24,431 vehicles, representing a decrease of 2.4 percent versus last year. Year-to-date sales through February are down 6.7 percent versus last year, with 43,155 vehicles sold. Key February sales notes: Mazda's SKYACTIV® TECHNOLOGY accounted for 83.2 percent of all vehicle sales during the month of February. This is the largest percentage of Mazdas equipped with SKYACTIV TECHNOLOGY sold in one month, and second-best month of total volume ever with 20,245 vehicles sold. Mazda6 experienced its second-best February since 2008 with 3,945 vehicles sold, representing an increase of 46.0 percent, year-over-year (YOY). February 2014 was CX-5's best month ever with 9,353 vehicles sold, good for an increase of 71.6 percent, YOY. February was one of the most historic months for Mazda as it celebrated the grand opening of its all-new engine and vehicle assembly plant in Salamanca, Mexico.

Honda sees sales up but profit sliding 16 percent in 2017-18

TOKYO - Honda forecasts a 16 percent fall in operating profit for the current financial year as the Japanese automaker sees higher auto sales being offset by a stronger yen and research-and-development costs. Japan's No. 3 automaker said it expects an operating profit of 705 billion yen ($6.34 billion) in the current FY2018, down from 840.7 billion yen posted in the fiscal year just ended, and lower than an average estimate of 850.8 billion yen from 23 analysts polled by Thomson Reuters I/B/E/S. It sees a 14 percent slide in net profit to 530.0 billion yen this year, down from 616.5. Honda's projections are based on a forecast that the yen will average 105 yen to the U.S. dollar through next March, stronger than the 108 yen rate in the year just ended.BUT CAR SALES ARE UP At the same time, there's good news as Honda expects its global vehicle sales to edge up 1 percent to 5.08 million this year, bolstered by growth in Asian sales to 2.06 million units, beating out North America to become Honda's top market as more Chinese drivers flock to its cars. The company expects to sell 1.92 million vehicles in North America, 2.5 percent less than the year just ended as it struggles to sell sedans including the Accord, which have fallen out of fashion in the past few years. Honda has been ramping up production of SUVs to keep up with strong demand for larger models in the United States, although overall vehicle sales show signs of slowing following a boom cycle after the global financial crisis. Mazda is taking a similar strategy, announcing on Friday it would expand production of SUV crossover models at home, while equipping overseas plants to enable more flexible production of models according to market needs. Japan's No. 5 automaker forecast a 19 percent jump in operating profit for the current financial year as it expects higher sales volumes, particularly in North America, to help it recover from last year's profit slump.A CONSERVATIVE OUTLOOK Executive Vice President Seiji Kuraishi acknowledged that Honda's expected currency hit of 95 billion yen was based on a "conservative" yen forecast, adding that growing costs to create next-generation cars would also impact earnings. "Our costs are rising to develop new technologies which will be needed in the future, like automated driving functions and electric cars," he told reporters at a results briefing.