Valve timing controlling apparatus for internal combustion engin

Details Valve timing controlling apparatus for internal combustion engin Valve timing controlling apparatus for internal combustion engin

1998-08-05

1999-12-28

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, F01L 134, F02D 1302

Patent

active

06006708&

ABSTRACT:
A VVT mechanism is comprised of an internal rotor 29 connected to a cam shaft 12 and a housing 28 connected to an output shaft of an engine, and is further provided with a lock mechanism 43, 49 for restricting the relative rotation of the internal rotor 29 and the housing 28. An electronic control unit (ECU) 17 controls the driving of the VVT mechanism 11, and when changing over the direction of the relative rotation at a specific relative angle of rotation for actuating the lock mechanism 43, 49, after executing holding control for supplying a predetermined amount of oil to the advanced-angle side and delayed-angle side hydraulic chambers for a predetermined time duration, the ECU 17 effects a changeover to advanced-angle control. During the changeover, oil pressure necessary for canceling the lock mechanism is constantly supplied, so that it is possible to prevent unprepared actuation of the lock mechanism.

REFERENCES:
patent: 5400747 (1995-03-01), Tabata et al.
patent: 5669343 (1997-09-01), Adachi
patent: 5738056 (1998-04-01), Mikame et al.
patent: 5794577 (1998-08-01), Kira
patent: 5823152 (1998-10-01), Ushida
patent: 5836275 (1998-11-01), Sato
patent: 5870983 (1999-02-01), Sato et al.

Affiliated with

Also associated with

Rating

Valve timing controlling apparatus for internal combustion engin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve timing controlling apparatus for internal combustion engin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve timing controlling apparatus for internal combustion engin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2375654