27 Jan '13, 4am

Check out: PSA Peugeot Citroen, Bosch working on compressed-air, battery-free hybrid via @AutoblogGreen

Nice to see that Peugeot are one of the first to use hydraulic power to capture and transfer energy, in a similar way a Airbus uses a hydraulically driven engine driven pump to power flying controls with electric rotary actuators, the Peugeot will use an integrated hydraulic pump and motor which in addition to acting as a hydrostatic drive that transfers hydraulic/air power from the engine to refill the reservoir without the need to ever be externally refilled Ryan, it also extracts the energy during braking, this energy is stored within the system and is then used an accumulator in the system to damp out surges or drop offs in system pressure. Photo's show a smaller second tank that operates at a low pressure, maybe thats part of the accumulator storage & thermal relief and has a pressure relief valve that would dump excess system pressure low pressure. It's all a bit amb...

Full article: http://green.autoblog.com/2013/01/26/psa-peugeot-citroen-...

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