Internal-combustion engines – Poppet valve operating mechanism – Hydraulic system
Reexamination Certificate
2011-01-11
2011-01-11
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Hydraulic system
C123S090130, C137S625000
Reexamination Certificate
active
07866286
ABSTRACT:
Valve lift in an internal combustion engine is controlled by an electro-hydraulic actuation mechanism including a selectively actuable hydraulic feedback circuit.
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Chang Ching
GM Global Technology Operations Inc.
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