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Torotrak to present extreme engine downsizing solution at Dresden supercharging conference

Green Car Congress

In comparison with the incumbent fixed-ratio positive-displacement supercharger on a 1.0L In comparison with the incumbent fixed-ratio positive-displacement supercharger on a 1.0L V-Charge system with mechanical variable drive outperforms conventional boosting methods on downsized gasoline engine. Click to enlarge.

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First videos of Rivian R2 and R3 driving on public roads show size comparisons

Baua Electric

Now video has emerged showing these cars driving on public roads, next to other cars, offering a better visual size comparison, and a look at the cars in motion in the sunlight. In the R2 unveiling, Rivian did tell us all the dimensions of the R2, so the comparisons there aren’t as important.

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Google and IEEE launch $1M challenge for downsized inverters

Green Car Congress

Google and the IEEE have launched the Littlebox Challenge—an open competition to design and build a small kW-scale inverter with the highest power density (of at least 50 W/in 3 , or 3.05 As a few points of comparison, the Bosch INVCON 2.3 The peak power density of the 2010 Prius motor inverter is 11.1 Click to enlarge.

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VW Premieres New Polo GTI; Textbook Downsizing Results in 25% Reduction in Fuel Consumption from Predecessor

Green Car Congress

The new Polo GTI, in what Volkswagen is calling “textbook downsizing”, is powered by a new 1.4-liter By comparison, its direct predecessor with regard to power—equipped with a 132 kW 1.8-liter The 177 hp Euro-5 16-valve four-cylinder engine reaches its maximum power at 6,200 rpm. Click to enlarge.

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JAC and Ricardo develop production version of HyBoost concept; seeking 30% boost in fuel economy with same performance

Green Car Congress

The Ricardo HyBoost concept is based on a downsized, highly boosted turbocharged direct injection gasoline (TDGI) engine giving improved fuel economy at low cost, linked to a 48V electrical architecture including a belt starter generator (BSG), DC-DC converter and a lithium-ion battery for energy storage. This launch vehicle replaces the 2.0L

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Mercedes-Benz delivers first two of eight Citaro G BlueTec Hybrid buses to Dresden

Green Car Congress

The articulated Citaro series hybrid uses a downsized diesel engine as the genset to provide power for a lithium-ion battery pack located on the roof. In comparison with a conventional diesel bus, the combustion engine is about half as large, at 450 kg instead of 1000 kg and a cubic capacity of only 4.8

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ETH Zürich Developing Pneumatic Hybrid Engine; Approaches Hybrid-Electric Performance at Lower Cost

Green Car Congress

The pneumatic hybrid engine, which follows the downsizing and supercharging paradigm, offers a fuel-saving potential that is almost equal to that of hybrid electric powertrains while inducing much lower additional mass and cost penalties, according to the ETH Zürich researchers. The compressed air supply also allows extreme downsizing.

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