Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2007-05-08
2007-05-08
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S347000, C123S403000
Reexamination Certificate
active
10732483
ABSTRACT:
An internal combustion engine includes: a variable valve timing mechanism for changing a valve timing of at least one of an intake valve and an exhaust valve; a pressure for detecting an intake pressure and an exhaust pressure of the internal combustion engine that pulsate in association with the actions of the piston, the intake valve, and the exhaust valve; and controller for setting the valve timing based on a magnitude relationship between the intake pressure and the exhaust pressure detected by the pressure detector.
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