Method and device for the operation of a valve of the...

Details Method and device for the operation of a valve of the... Method and device for the operation of a valve of the...

2007-01-16

2011-11-15

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C123S090140, C091S403000, C092S08500R, C137S625000

Reexamination Certificate

active

08056515

ABSTRACT:
A device for the operation of a valve (5) to the combustion chamber (6) of a combustion engine, wherein the combustion engine comprises a cylinder, a piston (3) displacably arranged in the cylinder (2), and a combustion chamber (6) delimited by the cylinder (2) and the piston (3), and said valve (5), and wherein the device comprises a valve actuator (7) that comprises an actuator chamber (8), an actuator piston (9) displacably arranged in the latter and arranged to drive the valve (5), and a communication channel (11) through which a pressure fluid is conducted into the combustion chamber (8) for the driving of the actuator piston (9) and, thereby, the valve (5) in a direction in which the valve (5) is opened. The communication channel (11) extends from the combustion chamber (6) to the actuator chamber (8), and said pressure fluid comprises fluid pressurized by the pressure in the combustion chamber (6).

REFERENCES:
patent: 5522358 (1996-06-01), Clarke
patent: 5694893 (1997-12-01), Chan et al.
patent: 7472669 (2009-01-01), Hedman
patent: 371718 (1923-03-01), None
patent: 4232573 (1993-04-01), None
patent: 4333493 (1993-10-01), None
patent: 2340881 (2000-03-01), None

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