CRAIG ROBERT SWAILES
Pilots at Bailey St, Taylor, MI
License number
Michigan A1863807
Issued Date
Apr 2015
Expiration Date
Apr 2016
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
6431 Bailey St, Taylor, MI 48180
Professional information
Air-Fuel Control Having Two Stages Of Operation
US Patent:
5251605, Oct 12, 1993
Filed:
Dec 11, 1992
Appl. No.:
7/989315
Inventors:
Craig R. Swailes - Taylor MI
Assignee:
Ford Motor Company - Dearborn MI
International Classification:
F02M 5100
US Classification:
123695
Abstract:
An air-fuel control that has two stages of operation. The control includes an EGO sensor interconnected to the exhaust system of an engine and a control assembly. In a first stage of operation, the engine is allowed to operate in an open loop condition. Periodically, however, the control momentarily moves to a second stage of operation. When in the second state, the control assembly ramps up the air-fuel ratio of the air-fuel mixture supplied to the engine until the EGO sensor changes state. The amount that the air-fuel ratio changed during this process is then compared with a nominal value to compute a correction factor. The correction factor is then used during the next open loop interval to increase or decrease the signal applied to the air-fuel distribution control and achieve a more optimum air-fuel mixture.