Chrysler 2011 Annual Report Download - page 54

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CRF’s activities are grouped into the following three core areas: environmental sustainability, social sustainability and economically-
sustainable competition.
Environmental Sustainability
This area consists of research aimed at increasing the energy efficiency of vehicles and reducing environmental impacts over their entire
life cycle (i.e., production to dismantling). Major achievements in 2011 include:
Application of MultiJet II Injection Rate Shaping (IRS) technology to 2.0L and 3.0L V6 diesel engines. During 2011, the IRS
technology (developed and patented by CRF at its Research & Technology laboratories in Orbassano, Italy) was applied to the new
MultiJet II diesel engines fitted on the Jeep Grand Cherokee (241 hp 3.0L V6) and the Fiat Freemont (170 hp 2.0L). The MultiJet
II technology uses a new injector with a balanced solenoid valve, enabling 8 injections per combustion cycle, and incorporates
Injection Rate Shaping technology, which combines the 2 main injections into a single continuous modulated flow of fuel to the
cylinders. This results in lower fuel consumption and polluting emissions than a conventional injector, and also drastically reduces
combustion noise.
MultiAir modular application. The development and application of MultiAir technology on naturally-aspirated and turbo versions
of the FIRE engine (2009) and the 2-cylinder TwinAir Turbo (2010) demonstrated the potential of this revolutionary technology in
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