Optimal wide open throttle air/fuel ratio control

Details Optimal wide open throttle air/fuel ratio control Optimal wide open throttle air/fuel ratio control

2006-11-21

2006-11-21

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

Reexamination Certificate

active

07137382

ABSTRACT:
This feature of the present invention comprises a method and apparatus which uses an ionization signal to optimize the air to fuel ratio AFR of the combustion mixture when the engine is operated at wide open throttle (WOT). This feature of the present invention optimizes the air to fuel ratio AFR on-line using the relationship between an air to fuel ratio AFR index CAFRand the air to fuel ratio AFR. In a preferred embodiment, the real-time control strategy adjusts the engine air to fuel ratio AFR based upon an air to fuel ratio AFR gradient parameter.

REFERENCES:
patent: 4213180 (1980-07-01), Marchak et al.
patent: 4214308 (1980-07-01), Carp
patent: 4383409 (1983-05-01), Otsuka et al.
patent: 4399792 (1983-08-01), Otsuka et al.
patent: 4434764 (1984-03-01), Hasegawa et al.
patent: 4463730 (1984-08-01), Kishi
patent: 4896639 (1990-01-01), Holmes
patent: 4958612 (1990-09-01), Kato et al.
patent: 5083427 (1992-01-01), Anderson
patent: 5149512 (1992-09-01), Li et al.
patent: 5260043 (1993-11-01), Li et al.
patent: 5451385 (1995-09-01), Hansel et al.
patent: 5482024 (1996-01-01), Elliott
patent: 5524432 (1996-06-01), Hansel
patent: 5762053 (1998-06-01), Anamoto
patent: 5929322 (1999-07-01), Aoki et al.
patent: 6029627 (2000-02-01), VanDyne
patent: 6161376 (2000-12-01), Uchikawa
patent: 2 000 334 (1979-01-01), None
patent: 2 131 177 (1984-06-01), None
patent: WO 98/37322 (1998-08-01), None

Affiliated with

Also associated with

Rating

Optimal wide open throttle air/fuel ratio control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optimal wide open throttle air/fuel ratio control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimal wide open throttle air/fuel ratio control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3624249