Internal-combustion engines – Poppet valve operating mechanism – Lubrication
Reexamination Certificate
2007-06-01
2010-02-23
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Lubrication
C123S090380, C123S090520, C123S090270
Reexamination Certificate
active
07665437
ABSTRACT:
In a cam journal (12A) in which a timing-advance oil passage (12a) and a timing-retard oil passage (12b) are provided as a first oil passage for VVT, an oil passage (102c) for HLA is provided as the second oil passage. The timing-advance oil passage (12a) and the timing-retard oil passage (12b), which are formed on the surface of the intake camshaft (12), are separated from the oil passage (102c) for HLA by a lower cam bearing (202). Thus, it is possible to provide the control oil passages for VVT and the oil supply passage for HLA in one cam journal (12A).
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The new Toyota CROWN GRS18# explanation pages, Dec. 2003.
Chang Ching
Sughrue & Mion, PLLC
Toyota Jidosha & Kabushiki Kaisha
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