Pneumatic valve recoil system for internal combustion engines
AssigneesAutomobiles Peugeot, Autmobiles Citroen
InventorJean-Pierre Boudy
Life of this patent
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Abstract
A pneumatic valve recoil system includes a piston that is unitary with the stem of a valve and which slides in a cylinder, such that the piston, valve stem, and cylinder cooperate to form a chamber containing a compressible fluid. The chamber is connected through a single calibration port to an oil-evacuation and fluid-pressure-regulating system located outside the cylinder head of the engine.
Claims22
Pneumatic valve system for internal combustion engines comprising a piston which is connected to a valve stem, which slides in a cylinder, with the piston, the valve stem, and the cylinder forming a chamber containing a compressible fluid, characterized by the fact that said chamber is linked to an oil-evacuation and fluid-pressure-regulating system outside the engine cylinder head by means of a single calibration port, wherein the oil-evacuation and pressure-regulating system includes a container whose upper portion communicates both with the calibration port and a source pressurized gas, and the lower portion where oil accumulates communicates with an evacuation line equipped with at least one device controlling evacuation of the oil.
Dependencies are inferred from the claim text.