Pre-throttle pressure control systems and methods
AssigneeGM Global Technology Operations LLC
InventorsJames L. Worthing, Lan Wang, Richard B. Jess
Life of this patent
Estimating the term…
Abstract
A system for a vehicle includes a desired mass air flowrate (MAF) module and a desired effective area module. The desired MAF module generates a desired MAF through a throttle valve of an engine based on an engine torque request. The desired effective area module generates a desired effective area of the throttle valve based on a throttle inlet air pressure (TIAP) and the desired MAF. A throttle actuator module adjusts opening of the throttle valve based on the desired effective area.
Claims20
A system for controlling an engine of a vehicle, comprising:
- a desired mass air flowrate (MAF) module that generates a desired MAF through a throttle valve of an engine;
- a desired effective area module that generates a desired effective area of the throttle valve based on a throttle inlet air pressure (TIAP) and the desired MAF;
- a max effective area module that generates a maximum effective area of the throttle valve based on the TIAP;
- and
- a desired area module that generates a desired area of the throttle valve based on the desired effective area and the maximum effective area,
- wherein a throttle actuator module adjusts opening of the throttle valve based on the desired area.
A method for controlling an engine of a vehicle, comprising:
- generating a desired mass air flowrate (MAF) through a throttle valve of an engine;
- generating a desired effective area of the throttle valve based on a throttle inlet air pressure (TIAP) and the desired MAF;
- generating a maximum effective area of the throttle valve based on the TIAP;
- generating a desired area of the throttle valve based on the desired effective area and the maximum effective area;
- and
- adjusting opening of the throttle valve based on the desired area.
Dependencies are inferred from the claim text.