Engine torque reserve system diagnostic systems and methods
AssigneeGM Global Technology Operations LLC
InventorsTimothy J. Hartrey, Christopher E. Whitney, Jinchun Peng, Cheryl A. Williams, Richard B. Jess
Life of this patent
Estimating the term…
Abstract
An engine control system of a vehicle comprises a reserves module and a fault diagnostic module. The reserves module controls airflow into an engine based on a driver torque request, increases the airflow into the engine when a reserve torque request is received, and outputs a torque output command for the engine based on the driver torque request. The fault diagnostic module selectively diagnoses a fault in the reserves module when the torque output command is greater than a sum of the driver torque request, a predetermined torque, and a load applied to the engine.
Claims23
An engine control system for a vehicle, comprising:
- a reserves module that controls airflow into an engine based on a driver torque request, that increases said airflow into said engine when a reserve torque request is received, and that outputs a torque output command for said engine based on said driver torque request;
- and
- a fault diagnostic module that selectively diagnoses a fault in said reserves module when said torque output command is greater than a sum of said driver torque request, a predetermined torque, and a load applied to said engine.
An engine control system for a vehicle, comprising:
- a reserves module that controls airflow into an engine based on a driver torque request, that increases said airflow into said engine when a reserve torque request is received, and that outputs a torque output command for said engine based on said driver torque request;
- a reserve capacity determination module that determines a reserve torque capacity based on a measurement of said airflow into said engine;
- and
- a fault diagnostic module that selectively diagnoses a fault in said reserves module when said reserve torque request is greater than said reserve torque capacity.
A method for a vehicle, comprising:
- controlling airflow into an engine of said vehicle based on a driver torque request using a reserves module;
- increasing said airflow into said engine when a reserve torque request is received by said reserves module;
- outputting a torque output command for said engine based on said driver torque request using said reserves module;
- and
- selectively diagnosing a fault in said reserves module when said torque output command is greater than a sum of said driver torque request, a predetermined torque, and a load applied to said engine.
A method for a vehicle, comprising:
- controlling airflow into an engine of said vehicle based on a driver torque request using a reserves module;
- increasing said airflow into said engine when a reserve torque request is received by said reserves module;
- outputting a torque output command for said engine based on said driver torque request using said reserves module;
- determining a reserve torque capacity based on a measurement of said airflow into said engine;
- and
- selectively diagnosing a fault in said reserves module when said reserve torque request is greater than said reserve torque capacity.
Dependencies are inferred from the claim text.