Intake/exhaust valve open/close timing control system for intern

Details Intake/exhaust valve open/close timing control system for intern Intake/exhaust valve open/close timing control system for intern

1999-10-13

2000-12-19

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, F02D 1302, F01L 134

Patent

active

061615110

ABSTRACT:
A valve timing control system for an internal combustion engine which is capable of making an actual intake/exhaust valve timing resume speedily rapidly to a desired valve timing with high accuracy to thereby prevent degradation of exhaust gas quality includes a desired valve timing arithmetic means (202) for determining desired valve timings (To) for an intake valve (17) and an exhaust valve (18), respectively, in dependence on an engine operation state (D), a variable valve timing mechanism (40) for changing open/close timings of the valves (17, 18), respectively, an actual valve timing detecting means (203) for detecting actual valve timings (Ta), respectively, of the valves (17, 18), an actual valve timing control means (204) for generating a control quantity (i) for the variable valve timing mechanism (40), and a learning means (206) for learning a most retarded valve timing as a learned value (LRN). The detected value of the actual valve timing (Ta) which is detected at a timing retarded more than the timing indicated by the learned value (LRN) is reflected in the learned value (LRN) in the course of operation of the engine (1).

REFERENCES:
patent: 5562071 (1996-10-01), Urushihata et al.
patent: 5623896 (1997-04-01), Kato et al.
patent: 5626108 (1997-05-01), Kato et al.
patent: 5626109 (1997-05-01), Yasumura et al.
patent: 5628286 (1997-05-01), Kato et al.
patent: 5937808 (1999-08-01), Kako et al.

Affiliated with

Also associated with

Rating

Intake/exhaust valve open/close timing control system for intern does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intake/exhaust valve open/close timing control system for intern, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intake/exhaust valve open/close timing control system for intern will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-263304