Internal-combustion engines – Engine speed regulator – Open loop condition responsive
Reexamination Certificate
2005-09-20
2005-09-20
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Engine speed regulator
Open loop condition responsive
C123S090150
Reexamination Certificate
active
06945227
ABSTRACT:
A method for controlling mode transitions, such as from stratified to homogeneous mode, in a direct injection engine adjusts an intake manifold outlet control device, such as a cam timing, to rapidly control cylinder fresh charge despite manifold dynamics. In addition, a coordinated change between an intake manifold inlet control device, for example a throttle, and the outlet control device is used to achieve the rapid cylinder fresh charge control. In this way, engine torque disturbances during the mode transition are eliminated, even when cylinder air/fuel ratio is changed from one cylinder event to the next.
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Cooper Stephen Lee
Russell John David
Surnilla Gopichandra
Allerman Hall McCoy Russell & Tuttle LLP
Ford Global Technologies LLC
Gimie Mahmoud
Lippa Allan J.
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