Valve return device, and an engine equipped with such a device

Details Valve return device, and an engine equipped with such a device Valve return device, and an engine equipped with such a device

2007-07-31

2007-07-31

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Pneumatic system

C123S090120

Reexamination Certificate

active

11081188

ABSTRACT:
The invention relates to a return device for returning a valve of an internal combustion engine, the device comprising:a piston secured to said valve and mounted to slide in a cylinder;a pressurized fluid feed connected to said cylinder via a feed channel; anda pressure relief valve connected to said cylinder via a discharge channel and arranged to limit the pressure prevailing in the cylinder to a predetermined maximum pressure; andmeans for regulating the maximum pressure as a function of the feed pressure using an affine-type relationship.The invention also relates to an internal combustion engine equipped with such a device.

REFERENCES:
patent: 5233950 (1993-08-01), Umemoto et al.
patent: 6738706 (2004-05-01), Cullen et al.
patent: 2 529 616 (1984-01-01), None

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