Engine system with inferential sensor
AssigneeGarrett Transportation I Inc.
InventorsDaniel Pachner, Dejan Kihas, Lubomir Baramov
Life of this patent
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Abstract
An engine system incorporating an engine, one or more sensors, and a controller. The controller may be connected to the one or more sensors and the engine. The one or more sensors may be configured to sense one or more parameters related to operation of the engine. The controller may incorporate an air-path state estimator configured to estimate one or more air-path state parameters in the engine based on values of one or more parameters sensed by the sensors. The controller may have an on-line and an off-line portion, where the on-line portion may incorporate the air-path state estimator and the off-line portion may configure and/or calibrate a model for the air-path state estimator.
Claims16
An engine system comprising:
- an engine;
- one or more sensors each configured to sense one or more parameters related to operation of the engine;
- and
- a controller in communication with the engine and the one or more sensors, the controller comprises a first virtual sensor and a second virtual sensor;
- and
- wherein:
- the first virtual sensor is configured such that during operation of the engine the first virtual sensor determines one or more initial conditions for the second virtual sensor based at least in part on values of the one or more parameters sensed by the one or more sensors by solving a differential algebraic equation to determine the one or more initial conditions;
- the second virtual sensor is configured such that during operation of the engine, the second virtual sensor determines values for one or more output parameters of the engine;
- and
- the controller is configured to send control signals to the engine to control operation of the engine, the controller is configured to determine the control signals based, at least in part, on the values for one or more output parameters of the engine determined by the second virtual sensor.
A method of controlling operation of an engine system, the method comprising:
- receiving values of one or more sensed parameters from a physical sensor, the one or more sensed parameters are related to an operation of an engine;
- using a first differential algebraic equation to calculate one or more initial conditions of an in-cylinder gas based, at least in part, on the values of one or more sensed parameters received from the physical sensor;
- using a second differential algebraic equation to calculate one or more values of a parameter output from the engine based, at least in part on the one or more initial conditions of the in-cylinder gas;
- determining one or more control signals to control operation of the engine, the one or more control signals are determined based, at least in part on, the one or more values of a parameter output from the engine that are calculated;
- and
- sending the one or more control signals to the engine.
Dependencies are inferred from the claim text.