Method for controlling vehicle emissions
First Claim
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1. A method for controlling emissions of a vehicle system, the method comprising:
- determining a plurality of non-sensed vehicle operating parameters;
the said plurality of non-sensed vehicle operating parameters includes a non-sensed air intake mass flow rate, the non-sensed air intake mass flow rate being determined using a volumetric efficiency ratio, a vehicle engine speed, a sensed intake manifold pressure, a displacement volume, and a sensed intake manifold temperature;
determining an engine air mass flow rate of the vehicle system using the non-sensed vehicle operating parameters; and
determining vehicle operating set-points for use in controlling emissions of the vehicle system, the vehicle operating set-points being determined using the non-sensed vehicle operating parameters and the determined engine air mass flow rate.
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Abstract
A method and system is provided for determining non-sensed vehicle operating parameters of a vehicle system. The method and system further provide for determining an engine air mass flow rate using the non-sensed vehicle operating parameters. A plurality of vehicle operating set-points may be determined using the non-sensed vehicle system operating parameters and the non-sensed engine air mass flow rate. A controller may use the vehicle operating set-points in order to control emissions of the vehicle system.
16 Citations
19 Claims
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1. A method for controlling emissions of a vehicle system, the method comprising:
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determining a plurality of non-sensed vehicle operating parameters;
the said plurality of non-sensed vehicle operating parameters includes a non-sensed air intake mass flow rate, the non-sensed air intake mass flow rate being determined using a volumetric efficiency ratio, a vehicle engine speed, a sensed intake manifold pressure, a displacement volume, and a sensed intake manifold temperature;determining an engine air mass flow rate of the vehicle system using the non-sensed vehicle operating parameters; and determining vehicle operating set-points for use in controlling emissions of the vehicle system, the vehicle operating set-points being determined using the non-sensed vehicle operating parameters and the determined engine air mass flow rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for controlling emissions of a vehicle system, the method comprising:
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determining a non-sensed EGR mass flow rate, a non-sensed air intake mass flow rate, a non-sensed turbine mass flow rate, a non-sensed turbine inlet temperature, and a non-sensed turbine inlet pressure using a plurality of sensed vehicle operating parameters; determining an engine air mass flow rate of the engine using the non-sensed EGR mass flow rate, the non-sensed air intake mass flow rate, the non-sensed turbine mass flow rate, the non-sensed turbine inlet temperature, and the non-sensed turbine inlet pressure; determining a plurality of vehicle operating set-points using the non-sensed EGR mass flow rate, the non-sensed air intake mass flow rate, the non-sensed turbine mass flow rate, the non-sensed turbine inlet temperature, the non-sensed turbine inlet pressure, and the engine air mass flow rate; and determining future operations of the vehicle system using the determined vehicle operating set-points, wherein the determined future operations are used to modify the determined vehicle operating set-points in order to control the emissions of the vehicle system. - View Dependent Claims (15)
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16. A system for use in controlling emissions of a vehicle system, the system comprising:
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a plurality of hardware sensors providing a plurality of sensed vehicle operating parameters, the plurality of hardware sensors including an intake manifold pressure sensor, an intake manifold temperature sensor, and a vehicle engine speed sensor; and a controller configured for; determining a plurality of non-sensed vehicle operating parameters based upon the data provided from the plurality of sensed vehicle operating parameters; determining a non-sensed engine air mass flow rate based upon the determined non-sensed vehicle operating parameters; determining a plurality of vehicle operating set-points using the non-sensed vehicle operating parameters and the non-sensed engine air mass flow rate; and controlling emissions of the vehicle system using the determined vehicle operating set-points. - View Dependent Claims (17, 18, 19)
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Specification