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Best Car News » Archive of 'Apr, 2009'

Six-Zone Combustion Model for Direct-Injection Diesel Engines

Six Zone Combustion Model DieselAt Ecole Centrale de Nantes, France, researchers are building a new multizone combustion model for direct-injection (DI) diesel engines. The model recognizes six zones and provides local information such as the various zone’s temperature and the mean equivalence ratio. The engineers use different methods to find new in-cylinder combustion approaches to decrease emissions.

The six zones are the following:

  • “Liquid” zone
  • Air fuel mixture between the utmost liquid diffusion L and the lift-off length H.
  • The premixed combustion zone.
  • Diffusion combustion zone.
  • Diffusion flame surrounding zones.
  • Surrounding gas (air and EGR).

The model was analyzed on two-operating points at lesser load conditions. With the analysis, they found out that the new six-zone combustion model provides some new in-cylinder information in contrast to existing OD combustion models. It can also locate main trends when varying engine speed and load, exhaust gas recirculation (EGR) rate, or boost pressure and can also be utilized to translate experimental emission trends.

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Posted in Diesel, Green Cars
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Citroen revealed DS Inside concept prior to Geneva debut

Citroën Cars revealed the DS Inside concept Citroen DS Insidevehicle prior to its scheduled show at the Geneva auto show on March.

The model that they showed is a three-door hatchback model which is a teaser to the upcoming version of the intended DS3 car, which is reported to hit the European market in the early period of 2010.

The Citroen DS Inside concept vehicle will be noticed and recognized by its stylish façade, on the road performance and of its functional statement. They will be produced with Citroen’s excellence when it comes to sharp styling, originality and extraordinary performance.

DS3 is considered to be the first building block of Citroen’s “near-premium” array of three cars.

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Posted in Auto Show, Citroën, Concept Cars
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