Renault Vehicules Industriels

Transports-recherches-etudes Et Groupement D'interet Economique (tregie)

Robert Michel

Hydropneumatic system for recovering braking energy for a vehicle comprising a power 'shunt' transmission, characterized in that it comprises two hydraulic switches (19 and 20) or equivalent devices, the first of which permits two hydraulic machines or sets of machines (3a, 4a) to be combined or opposed and the second of which (20) enables the two-direction lines joining these machines to the hydropneumatic accumulator (17) and a low-pressure reservoir (18) to be connected straight through or crossed-over. Their operation enables the cylinder capacities of the machines to be controlled so as to store or restore the deceleration energy.

Hydropneumatic system for recovering braking energy for urban vehicles

Hydropneumatic energy reservoir for accumulating the braking energy recovered on a vehicle by means of a hydrostatic energy recovery-restoration device, combined or not with the vehicle transmission and working between a high-pressure accumulator and a low-pressure accumulator, characterized in that it comprises several oblong cylindrical hydropneumatic accumulators (1) connected hydraulically in parallel and placed side by side inside a single casing (6) of small height, the space included between the said casing (6) and the said accumulators (1) forming the low-pressure accumulator (16).

Hydropneumatic energy reservoir for accumulating the braking energy

In a vehicle guidance system, a circular-section guidance rail is embraced y a detector on a vehicle. At a fork, where the rail progressively broadens prior to dividing, the rail height is reduced so that a detector, when tilted to select one branch of the fork, has its lowered side between the rail and a side wall of a channel in which the rail is mounted and its raised side riding over the broadened rail.

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Paris, France

Robert Michel