1996 Mazda B2300 Base Standard Cab Pickup 2-door 2.3l on 2040-cars

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Mazda patents show rotary engine for range-extended EV

Two years ago, Mazda introduced a fascinating range-extended electric car called the Mazda2 RE Range-Extender. It took an electric Mazda2, and dropped in an itty-bitty 330cc rotary engine. It wasn't the rotary-powered sports car we had hoped for, but it seemed like a unique way to keep the quirky engine alive and kicking. But not long after the car's reveal, it seemed to disappear. Now the basic idea has resurfaced with a few modern updates in a couple of US patents. The first patent is pretty straightforward and describes a range-extended EV similar to the BMW i3. At the front is an electric motor driving the front wheels. At the back is an internal combustion engine that powers an electric generator. In the middle is a lithium-ion battery for storing and delivering electricity. It's the same set-up as that Mazda2. The second patent is for an engine start-and-stop system, but specifically for rotary engines. The system is designed to shut off a rotary engine when not needed, much as modern piston engines do. It also stops the rotor in a position that closes the intake port to ensure no fuel or exhaust emissions slip out through the intake tract. This is necessary since there are no valves in a rotary, and air and exhaust come through ports that are "opened" and "closed" by the rotor itself. The patent also describes the possibility of firing a spark plug after the fuel has been cut to eliminate any leftover fuel emissions. This system would theoretically improve a rotary engine's fuel economy and emissions significantly, which would be a boon as those are two of the rotary's major weaknesses. The rotary-engine patent also includes the same range-extended powertrain drawing as the first patent. It's there as a description of a possible application. And in such an application, where the rotary wouldn't have to run all the time, the system could take advantage of the rotary's inherent strengths. Weight can be kept low thanks to the engine's small dimensions, which should help in keeping the car sprightly and efficient. Rotaries are renowned for smoothness, too, so it shouldn't need too much refining and sound deadening, the latter of which adds more weight. The small size would also help with packaging, leaving more space for people, cargo, or possibly batteries. And since it has been patented, the company may be looking to bring the system to market.

What a 181-horsepower 2019 Mazda MX-5 Miata means for us, and you

Last month, we reported on a VIN filing dug up by Road & Track that showed that the 2019 Mazda MX-5 Miata's 2.0-liter Skyactiv-G engine would get a power bump, from 155 to 181 net horsepower. As for how the 2019 Miata would make that extra power, we heard rumors it'd utilize a new cylinder head allowing higher revs, accounting for that extra power. Now we have what appears to be a leaked document from Mazda Canada showing exactly where that extra power comes from. According to the document posted at Miata.net (registration required to see the image), Mazda will alter camshaft lift and valve size on both the intake and exhaust side, fit freer-flowing exhaust, and smooth and enlarge the piping on the air intake side. There are also internal engine modifications: lighter pistons with lower crowns for better swirl in the combustion chamber, lighter connecting rods, and a crankshaft balanced for higher-RPM operation. All those extra revs mean extra vibration and noise, so Mazda will ditch the single-mass flywheel for a "low-inertia" dual-mass flywheel – which will attempt to find a nice balance between DMF damping action and SMF directness. Overall, it's a pretty serious engine revision with some driveline changes that will heavily affect the driving characteristics of a fantastic driver's car. Contributing Editor James Riswick and Senior Editor Alex Kierstein, both well versed in Miatas past and present, are here to analyze what this could mean for the little roadster. James Riswick: I don't know much about them lighter crank combustion rods, but I for one welcome the news of more power to the Miata. The jump from 155 to 181 seems like a very prudent Mazda-like thing to do, accomplishing that task through various aforementioned technical wizardry as opposed to slapping on a turbocharger, exclaiming "yee-hah" and calling it a day. Alex Kierstein: That's true. I'm wary of additional power, but you do make a good point that at least this is the right way to do it. Going all-motor will keep the bright responsiveness of the engine intact. But higher revs might make power delivery peakier. Frankly, I'd be ok with moving the torque and horsepower peaks up a bit in the rev range, making it a bit more work to access the engine's sweet spot. The dual-mass flywheel should also help if low-end torque suffers, so less stalling in traffic. JR: Did wonders in the 911 and 718s.

Mazda to reveal MX-5 Miata Club Edition in New York

Mazda is bringing a new version of its latest MX-5 Miata to the New York Auto Show. And while it's giving us very little to go on at the moment, from what we can tell so far, it looks promising. For starters, it's called the Club Edition, which speaks to us of enhanced performance – particularly on the track. For another, the statement below highlights the "maximum driving enjoyment" the existing MX-5 was "designed to deliver," and then proceeds to claim that the Club will "amplify that experience, harking back to the early lightweight sports cars that inspired it, but serving as a beacon for the future as a thoroughly modern, sophisticated package." Hopefully, then, it'll serve as some sort of road-going mid-point between the stock version and the Global Cup racing concept pictured above. We'd expect the 2.0-liter four-cylinder engine to carry over likely unchanged with its 155 horsepower and 148 pound-feet of torque, but with the potential addition of a stiffened suspension, upgraded rolling stock, revised aero, enhanced cockpit and maybe some excess weight trimmed out – although the new Miata doesn't have much to lose as it is. In any case, we're excited. Related Video: 2016 MAZDA MX-5 MIATA CLUB EDITION TO DEBUT AT NEW YORK INTERNATIONAL AUTO SHOW - 2016 MX-5 Club represents most aggressive road-going version - IRVINE, Calif., March 25, 2015 /PRNewswire/ -- Ready to join the Club? The 2016 Mazda MX-5 Miata Club edition, that is. Mazda North American Operations (MNAO) will be introducing the North American-spec MX-5 Club next week at the New York International Auto Show. The MX-5 Club represents the most aggressive road-going iteration of Mazda's fourth-generation flagship roadster. The 2016 MX-5 sheds approximately 150 lbs. from its predecessor through use of lightweight, efficient SKYACTIV®1 TECHNOLOGY, now weighing 2,332 lbs. when equipped with the standard SKYACTIV-MT six-speed manual transmission (2,381 lbs. with the six-speed automatic). Powering all North American models will be a 2.0-liter SKYACTIV engine, rated at 155 horsepower and 148 lb-ft of torque. Shorter than the first-generation MX-5 that initially graced U.S. shores in 1989, yet wider than the outgoing model and with its engine lower and farther back in its chassis, the 2016 MX-5 is designed to deliver maximum driving enjoyment.