By on July 11, 2014

Mazda-2-Range-Extender1

The oft-rumored Mazda2 RE PHEV, powered by a range-extending rotary engine, may soon become reality, appearing sometime after the next-gen hatch debuts in showrooms between October and the new year.

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By on June 25, 2014

mercedes-benz-b-class-ed

Mercedes-Benz is offering a range extender option for the new all-electric B-Class, but it’s not what the name suggests.

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By on March 19, 2013

The gasoline range-extender that will be optional in BMW’s i3 electric car will be built by Kymco, a Taiwanese firm that is best known for its scooters.

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By on February 25, 2013

The Tesla vs. New York Times controversy has finally left the news cycle, forgotten in less time than it takes a Model S to juice up at a Supercharger station.  Meanwhile, BMW is ready to introduce its new range of “i” vehicles, which will conveniently dodge the whole question of range anxiety.

Select European outlets were invited for ride-alongs in BMW’s new i3 city car and i8 supercar. The impressions gleaned from ride-alongs are generally next to worthless, but the technology being used by BMW is worth examining. Rather than a pure EV, BMW will be adopting a three-pronged approach – a pure EV, a range extender and a plug-in hybrid.

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By on August 29, 2012

The rotary engine and Mazda have had a tumultuus, on-and-off relationship that rivals an Old Hollywood marriage. Market conditions and government regulations have made mass production of the rotary a constant challenge, and the death of the Mazda RX-8 looked like the final nail in the Wankel’s coffin.

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By on May 31, 2012

While on the Infiniti JX launch event, I met a gentleman who now works with Nissan. He had a number of interesting stories about his tenure at GM, and what it was like to work on the EV1 program, as well as the technology that he swears was the forerunner to the Chevrolet Volt.

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By on May 10, 2012

Despite Toyota’s announcement of a new generation of RAV4 EV, mostly for CARB compliance, it seems that RAV4 EV production has never really stopped – at least not on a one-off basis.

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By on March 8, 2012


Consumer Reports recently bought a Fisker Karma, which ended up breaking down in the driveway of their vehicle testing facility.

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By on March 1, 2010

The Wankel rotary engine returns to its native land at last. Since the NSU Ro 80 went out of production in 1977, Mazda has been the keeper of the flame. But Audi has announced that it will show an A1 e-tron concept at the Geneva show this week, and the pug-in will feature a single-rotor Wankel range extender (gen set). Rotaries and micro-turbines have often been suggested as the ultimate range extenders due to their compact size and low weight. (Read More…)

By on November 24, 2009

Is anyone else seeing GM's business plans in this chart? (courtesy:gm-volt.com)

As we saw in the last VBW, the Volt’s range-extender still needs some software work. But efforts to to keep the gas engine from acting like a thrashing, disembodied dervish will have to balance the desire for smooth operation and maximum efficiency.  And it’s looking like efficiency in charge sustaining (CS) mode won’t match the hybrid standard-setters. Volt chief powertrain engineer Alex Cattelan breaks the news gently to the true believers at GM-volt.com

You’ve got to understand that all of the decisions that we’ve made around this product are made because its an EV. That is the first and foremost thing that it needs to be. So because it is an EV some of the decisions that we’ve made around engine operation will be different than what Toyota makes in its parallel hybrid. For them they are always operating in hybrid mode so they need to optimize everything for engine operation.

In our case we’re optimizing everything for EV operation and the secondary is certainly going to be better than conventional vehicles, but were not necessarily totally optimizing the system for charge sustaining mode because we don’t want to compromise electric vehicle mode.

(Read More…)

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