Lubrication structure of camshaft with variable valve timing

Details Lubrication structure of camshaft with variable valve timing Lubrication structure of camshaft with variable valve timing

2008-01-29

2008-01-29

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

C123S090160, C123S090270

Reexamination Certificate

active

11646106

ABSTRACT:
A lubrication structure for a camshaft with variable valve timing includes an advance hole, which includes an advance flow passage formed in a camshaft body. An end of the camshaft is attached to a continuously variable valve timing. A retard hole, which includes a retard flow passage, is formed in the camshaft body and spaced horizontally from the advance hole. A divergence flow passage has an end that surface-contacts the camshaft and is extended to communicate with the retard hole at an upper surface of a mounting part of a cylinder head. The other end of the divergence flow passage communicates with the slip surface on which the camshaft lays via a counter bore, so as to prevent lubrication film from being broken by load of the sprocket at an engine idle state or at an initial stage of cold starting.

REFERENCES:
patent: 6032629 (2000-03-01), Uchida
patent: 63-100205 (1988-05-01), None
patent: 06-159020 (1994-06-01), None
patent: 08-200022 (1996-08-01), None
patent: 10-231712 (1998-09-01), None
patent: 11-303615 (1999-11-01), None
patent: 2004-162639 (2004-06-01), None
patent: 20020041087 (2002-06-01), None
patent: 20040031578 (2004-04-01), None
patent: 20040033703 (2004-04-01), None

Affiliated with

Also associated with

Rating

Lubrication structure of camshaft with variable valve timing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lubrication structure of camshaft with variable valve timing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lubrication structure of camshaft with variable valve timing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3930826