1989 Mazda Rx-7 Turbo Ii Mostly Original Only Suspension Is Modified. on 2040-cars

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How Mazda got Skyactiv-X to work is incredible

"Take everything you know about engines and turn it around," Mazda North America Vehicle Development Engineer Dave Coleman says, patiently and with a look of benevolent pity, as he's quizzed about the particulars of the company's new engine. The Skyactiv-X engine is enigmatic — and deceptively simple in operation. And the bottom line for American consumers is that they'll be able to buy a car (or crossover; we don't know yet what vehicle will first get it) by late 2019 that provides diesel-like fuel economy but runs on regular old gasoline. In between diesel and spark ignition, but it's neither To truly understand it, you have to dive into the contradictions. Take that regular old gasoline: Contrary to common sense, the lower the octane, the better it works. In the lab, the Skyactiv-X engine loves 80 octane. The lowest Americans get is 87, so the engine is tuned for that octane. Go higher and you lose some low-end torque. Coleman was right. It's hard to wrap your head around an engine that thrives just at the point when most gas engines would aggressively self-destruct. It uses a supercharger to pump additional air — but not additional fuel. It uses spark plugs to start a combustion cycle that normally doesn't need a spark. And, quixotically, it's not displacing Mazda's own American-market diesel engine, currently languishing in a seemingly endless hell of regulatory approval. More bizarre: Mazda is a tiny automaker facing real existential headwinds, and gasoline compression ignition is a massive challenge. GM and Hyundai announced compression ignition, or HCCI, projects (full name, homogeneous charge compression ignition) to great fanfare, but they never amounted to a production hill of beans, crippled by reliability issues or horrible vibrations. Worse, they only worked at an unusably narrow range — low RPMs and low loads. HCCI research improved direct-injection gas and diesel engine technologies for these companies, but HCCI itself remains untamed. The benefits of lean combustion Why even try to tame HCCI? The answer is much better fuel economy and lower emissions. Less burned carbon-based fuel, less carbon dioxide released. That's simple. But there are some thermodynamic reasons for the lean combustion you can achieve with compression ignition that are worth explaining. The ideal amount of fuel for a conventional engine to burn is about a 14:1 air-to-fuel ratio. That lets every molecule burn nicely, in theory.

Recharge Wrap-up: Mazda, Subaru and Toyota PHEV, Nomadic Power grant

The next generation of the Toyota Prius Plug-in Hybrid looks to be important for Mazda and Subaru as well. Toyota will likely need to sell more of the new plug-in hybrid to meet stricter ZEV standards in California. That means it will get more extra electric range, as customers have been asking for. Subaru and Mazda will also have to adhere to the California standards beginning in 2018. Those two smaller automakers will likely license a plug-in hybrid powertrain from Toyota in order to fulfill compliance. Read more at Green Car Reports. Tesla is partnering with Dalhousie University to improve battery technology. Tesla signed a five-year research agreement with Dalhousie's Jeff Dahn, a lithium-ion battery researcher. Dahn and the 25 researchers in his lab will work with Tesla's Director of Battery Technology, Kurt Kelty, to increase capacity through improved materials. The collaboration could be important both for Tesla's automotive and stationary batteries. "Our research group's goal is to increase the energy density and lifetime of Li-ion batteries, so we can drive down costs in automotive and grid energy storage applications," says Dahn. Read more from Dalhousie University. Nomadic Power is receiving a European Commission grant worth ˆ2 million (about $2.26 million) for trailer-mounted mobile batteries. Nomadic Power's mobile batteries, called Nomads, have incorporated photovoltaic systems and can be used to extend the electric driving range of a plug-in vehicle, or to provide backup power to a home. The Nomads use an intelligent energy management system to learn and predict user behavior and manage the solar system based on weather forecasts. "We see a strong future in electric-powered mobility and an increasing use of renewable energy, photovoltaic power in particular," says Nomadic Power CEO Dr. Manfred Baumgaertner. "Our mobile batteries have great potential in these markets that recently got a significant shot in the arm by Tesla's announcements." Read more from Nomadic Power, and at Green Car Congress. Related Gallery 2012 Toyota Prius Plug-In: First Drive View 24 Photos News Source: Green Car Reports, Dalhousie University, Green Car Congress, Nomadic PowerImage Credit: Nomadic Power Government/Legal Green Mazda Subaru Tesla Toyota Technology Electric recharge wrapup

2017 Fiat 124 Spider priced below most Miatas

The Fiat 124 Spider and Mazda MX-5 Miata might be siblings, but all that means is the rivalry between the two cars will be unusually intense. Pricing for the reborn 124 has been released and is added proof of that fact – aside from the very base trim, the turbocharged Italian is cheaper than its Zoom-Zoomy brother. Fiat's base model, the 124 Spider Classica, starts at $25,990. The MX-5 Sport isn't much cheaper, at $25,735. Both cars get 16-inch alloy wheels, black cloth seats, LED taillights, but the Mazda will throw in LED headlights. It's also interesting to note that the two cars have differing destination charges – $995 for the Fiat and $820 for the Mazda. Move up to the mid-range Fiat, and you'll start to see the "Italian" car eke out a pricing advantage. The Lusso, Italian for luxury, rings up at $28,490 compared to the MX-5 Grand Touring's $30,885. Yes, we're comparing the middle-tier 124 to the range-topping Mazda, because the mid-range, enthusiast-oriented Club is more analogous to the 124's Abarth model. The Lusso matches the MX-5 GT with 17-inch alloys, heated leather seats, a 7.0-inch touchscreen with navigation, and dual-zone automatic climate control. The Mazda does come with a bevy of safety features as standard – blind-spot monitoring, lane-departure warning, and automatic high-beam control – which look to be optional on the Fiat, so take that into consideration if you're thinking about buying one of the two. We enthusiasts are most interested in the matchup between the 124 Spider Abarth and the MX-5 Club. The scorpion-badged 124 starts at $29,190 and the Club at $29,420. You'll get more power – 10 additional ponies according to FCA – as well as all the performance goodies from the Club. There are Bilstein-tuned shocks, a mechanical limited-slip diff, and a front strut bar, plus a very imposing exhaust note. Recaro seats will be an optional extra, as will Brembo brakes (the MX-5 bundles them with BBS wheels). Finally, there's the 124 Spider Prima Edizione Lusso. The limited-edition wears Azzurro Italia (translation: pretty blue) paint and rings in at $35,995, which gets you a bunch of swag on top of the normal Lusso stuff. Oh, and if you choose the automatic transmission, you'll be punished with a $1,350 charge, regardless of which Fiata you go for. That's less than the premium Mazda charges for an automatic on an MX-5 Club or GT, but more than the $1,480 extra it charges for a two-pedal Sport.