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US 10,947,892 B2Granted
System, method, and apparatus for throttled engine control using turbocharger wastegate
AssigneeCummins Inc.
InventorCarlos Alcides Lana
Life of this patent
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Abstract
Systems, methods and apparatus are disclosed for producing a target pressure differential across an intake air throttle of an internal combustion engine by opening or closing a turbocharger wastegate to a commanded position that provides an opening through the wastegate having an effective area based on the target pressure differential.
Claims20
A method, comprising:
- determining a target exhaust manifold pressure for an internal combustion engine in response to a target pressure differential across an intake air throttle of the internal combustion engine, the internal combustion engine including a turbocharger with a turbine bypass and a wastegate including a controllable actuator for controlling a position of the wastegate in the turbine bypass;
- determining an actual exhaust manifold pressure for the internal combustion engine;
- determining, with feedback control, an exhaust manifold pressure correction in response to the target exhaust manifold pressure and the actual exhaust manifold pressure;
- determining a target effective area of opening for the wastegate to provide the exhaust manifold pressure correction;
- determining a wastegate actuator position command for the actuator based on the target effective area of the wastegate;
- and
- positioning the wastegate to provide the target effective area of opening in response to the wastegate actuator position command.
4 more elements
A method, comprising:
- determining, with an electronic controller, a wastegate actuator position command that controls an actuator to position a wastegate in a turbine bypass of a turbocharger of an internal combustion engine to provide a target effective area of opening of the wastegate, wherein the target effective area of opening of the wastegate is determined in response to a target exhaust manifold pressure that is determined in response to a target pressure differential across an intake air throttle of the internal combustion engine;
- and
- positioning the wastegate in response to the wastegate actuator position command to provide the target effective area of opening for the wastegate.
A system, comprising:
- an internal combustion engine pneumatically coupled to a compressor of a turbocharger on an inlet side of the engine and to a turbine of the turbocharger on an outlet side of the engine, the inlet side of the internal combustion engine further including an intake air throttle;
- the turbocharger comprising a wastegate connected to a wastegate actuator responsive to a wastegate actuator position command, the wastegate being positioned in a bypass of the turbine;
- and
- a controller configured to determine the wastegate actuator position command to position the wastegate in the bypass to provide a target effective area of opening of the wastegate, wherein the target effective area of opening of the wastegate is determined in response to a target exhaust manifold pressure that is determined in response to a target pressure differential across the intake air throttle of the internal combustion engine, and to provide the wastegate actuator position command to the wastegate actuator to position the wastegate in response to the wastegate actuator position command.
1 more element
Dependencies are inferred from the claim text.