Discrete time rate-based model predictive control method for internal combustion engine air path control
First Claim
Patent Images
1. A system for optimizing engine operation, the system comprising:
- an internal combustion engine; and
a controller configured to control a variable geometry turbine (VGT) and an exhaust gas recirculation (EGR) valve during engine operation, the controller developing a non-linear discrete time rate-based predictive model responsive to engine operating parameters and able to achieve zero-offset steady state tracking, and using the non-linear discrete time rate-based predictive model to generate a VGT position and an EGR valve position, wherein operation of the internal combustion engine continues based on the generated VGT position and EGR valve position.
3 Assignments
0 Petitions
Accused Products
Abstract
A discrete time rate-based model predictive controller for air path control for a diesel engine regulates VGT position and EGR valve position to specified set points by coordinated control of intake manifold air pressure and EGR rate. The controller may be configured to measure or estimate at least one of the intake manifold pressure and EGR rate. A non-linear discrete time rate-based predictive model may be used, as developed by the controller.
-
Citations
10 Claims
-
1. A system for optimizing engine operation, the system comprising:
-
an internal combustion engine; and a controller configured to control a variable geometry turbine (VGT) and an exhaust gas recirculation (EGR) valve during engine operation, the controller developing a non-linear discrete time rate-based predictive model responsive to engine operating parameters and able to achieve zero-offset steady state tracking, and using the non-linear discrete time rate-based predictive model to generate a VGT position and an EGR valve position, wherein operation of the internal combustion engine continues based on the generated VGT position and EGR valve position. - View Dependent Claims (2, 3, 4)
-
-
5. A method for controlling an internal combustion engine, the method comprising:
-
obtaining intake manifold pressure and EGR rate measurements or estimates; developing, using a controller, a non-linear discrete time rate-based predictive model responsive to the intake manifold pressure and EGR rate measurements and able to achieve zero-offset steady state tracking; using the non-linear discrete time rate-based predictive model to generate, by the controller, a VGT position and an EGR valve position; and controlling operation of the internal combustion engine based on the generated VGT position and EGR valve position. - View Dependent Claims (6, 7)
-
-
8. A non-transitory computer storage media having embodied thereon computer-useable instructions that, when executed, perform a method for controlling an internal combustion engine, the method comprising:
-
obtaining intake manifold pressure and EGR rate measurements or estimates; developing, using a controller, a non-linear discrete time rate-based predictive model responsive to the intake manifold pressure and EGR rate measurements or estimates and able to achieve zero-offset steady state tracking; using the non-linear discrete time rate-based predictive model to generate, by the controller, an VGT position and an EGR valve position; and controlling operation of the internal combustion engine based on the generated VGT position and EGR valve position. - View Dependent Claims (9, 10)
-
Specification