Is that a Peugeot heart in your Mini there ?
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  1. #1
    XTC
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    Default Is that a Peugeot heart in your Mini there ?

    12/13/2004

    BMW Group and PSA Peugeot CitroŽn Present Their Cooperation: A New Standard in Gasoline Engines

    BMW Group and PSA Peugeot CitroŽn have unveiled the state-of-the-art technologies deployed in their new gasoline engines, the first to be jointly developed and produced by their cooperative venture.

    Announced in July 2002, the two Companiesí cooperation in gasoline engines is now setting new standards for performance, driving comfort and reductions in fuel consumption and CO2 emissions.

    Beginning in 2006, the engines will equip small and mid-size cars produced by the Peugeot and CitroŽn marques as well as future models of the MINI. Production is expected to eventually total roughly one million units a year.

    At a special technology day at BMW Groupís Research and Development Center in Munich, executives from both companies presented the technical features of two types of engines:

    - A 1.6-liter atmospheric engine with a variable valve timing distribution and a power output of 85 kW (115 hp).
    - A 1.6-liter direct injection, compressed turbo engine with a power output of 105 kW (143 hp).

    The new models are the first in a family that will eventually comprise engines delivering a range of power outputs from 55 kW (75 hp) to 125 kW (170 hp).

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    As a result of both groupís expertise, these engines offer a large number of new features including:

    - Variable valve timing.
    - Fully controlled oil pump.
    - Single belt drive for all ancillary components.
    - Cylinder heads produced by lost foam casting.

    In addition, several innovations have been developed, including:

    - Direct injection to optimize power.
    - Twin-Scroll turbocharger to improve response time and driving comfort.
    - Self-disengaging water pump to reduce fuel consumption and emissions.

    The co-operation between BMW Group and PSA Peugeot CitroŽn clearly demonstrates that gasoline engines still offer a great potential of technological progress, thus contributing to the reduction of consumption and CO2 emissions while enhancing the car performances and its related driving pleasure.


    http://www.psa-peugeot-citroen.com/d...1103281940.pdf
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  2. #2
    Gone Fishin' Ray Bell's Avatar
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    Castings by the 'lost foam' method?

    I'm familiar, of course, with the 'lost wax' method, this must be similar. Anyone know what kind of foam? I'm betting that it will be something that reduces emissions in production.

  3. #3
    Fellow Frogger! whitegoshawk's Avatar
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    Yep, lost foam!

    Similar to lost wax casting but using expanded polystryrene foam moulds. One of the manufacturing magazines recently had an article on how General Motors have been making some of their engine parts this way.

    The main benefit is the ability to accurately cast in complex features (like the oil distribution in the engine block), which saves manufacturing time and the amount of machining required.

    Not to sure about the emissions issue though. I would have thought that burning off polystyrene is not too nice, but it is at a high temperature, which generally limits the amount of toxic byproducts.
    "You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles... Radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat." - Albert Einstein

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  4. #4
    Gone Fishin' Ray Bell's Avatar
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    Sounds like temperature control of the incoming metal would be critical... too hot and the mould might burn away too much, not hot enough and... well, it'll be only a half-caste so to speak.

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