Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode
Reexamination Certificate
2007-01-02
2007-01-02
Solis, Erick R (Department: 3747)
Internal-combustion engines
Engine speed regulator
Responsive to deceleration mode
C123S090150, C123S481000
Reexamination Certificate
active
11214664
ABSTRACT:
An electronic valve actuation system and control method is described. The valve timing is changed between early and late intake valve closing depending on engine operating conditions. Further, valve timing is adjusted to control engine airflow or engine torque. Finally, air-fuel ratio is adjusted based on feedback from an exhaust gas oxygen sensor as well as an estimate of air, fuel, and residual exhausted from cylinders operating with late valve closing (after bottom dead center) timing.
REFERENCES:
patent: 6619242 (2003-09-01), Kaneko
patent: 2003/0213462 (2003-11-01), Weber et al.
patent: 2004/0055564 (2004-03-01), Crowell et al.
patent: 2004/0237917 (2004-12-01), Yasui et al.
Cullen Michael John
Gibson Alexander O'Connor
Hardy Larry Allen
Jankovic Mrdjan J.
Kolmanovsky Ilya V.
Alleman Hall McCoy Russell & Tuttle LLP
Ford Global Technologies LLC
Lippa Allan J.
Solis Erick R
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