Valeo camless system avaible!
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  1. #1
    Member TheRealFrog's Avatar
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    Default Valeo camless system avaible!

    the leading european cars equipments get the engine revolutions of next years sart!

    "Valeo Presents New Smart Valve Actuation Technology - the Camless Engine Becomes a Reality
    FRANKFURT, Germany, September 13 -- Valeo today presented its latest technology for reducing fuel consumption and pollutant emissions by 20% using an engine cylinder head design that adopts Smart Valve Actuation (SVA) in place of the conventional mechanical operation of engine valves by the cam belt, camshaft and hydraulic cam followers.

    "SVA is the first of many innovative systems that Valeo intends to actively develop and market in order to meet increasing demand for reduced fuel consumption and pollutant emissions following the recent acquisition of Johnson Controls' Engine Electronics Division. Engine management and power electronics are now core technologies for the Group which will drive strong future growth," said Valeo Chairman & CEO Thierry Morin.

    A brand new technology

    In a camless engine, each engine valve is operated individually by an actuator that is placed on the upper surface of the cylinder head, directly above the valve guides. Each actuator is linked to an engine-mounted Valve Control Unit (VCU) that ensures the optimal positioning of all valves and performs the power drive function.

    Significant benefits for consumers

    By controlling residual gases, minimizing pumping losses and deactivating cylinders and valves, this environmentally friendly technology reduces fuel consumption and pollutant emissions by 20%. Consumers will also benefit from enhanced performance and driving comfort, due to an increase in low-end engine torque.

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    The SVA development program is currently being undertaken with support from several leading car manufacturers and is scheduled for volume production in 2009.


  2. #2
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    Hmmmm sounds somewhat similar to the pneumatic system in F1's?!?

    Which Renault invented & is the key reason F1 engines can rev so high....

  3. #3
    Member adamsclio's Avatar
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    Quote Originally Posted by nate
    Hmmmm sounds somewhat similar to the pneumatic system in F1's?!?

    Which Renault invented & is the key reason F1 engines can rev so high....
    The pneumatics in F1 engines replace the valve springs. They still have cams though.

    I wonder wht this new system uses? Solenoids? I would have thought the reaction time would be too slow...
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  4. #4
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    Quote Originally Posted by adamsclio
    The pneumatics in F1 engines replace the valve springs. They still have cams though.

    I wonder what this new system uses? Solenoids? I would have thought the reaction time would be too slow...
    Yeah, I was under the impression that the system uses electronic actuators f some description...

    They'd want to have done their homework, as it is a massively important and tolerance critical facet of engine design...

  5. #5
    1000+ Posts Europa's Avatar
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    ...not to mention reliability.

    However, think how optimal the engine could be made! Independent control, per cylinder of the entire valve sequence, overlap etc...
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  6. #6
    Real cars have hydraulics DoubleChevron's Avatar
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    Think of the power you could get... Nice standard torquey valve openings for low engine speeds... Yet up high in the rev range it can open up some serious valve overlap (that would usually cause a motor to idle lumpy as hell and be a dog to drive down low) ...

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