Temperature control system and method for particulate filter regeneration using a hydrocarbon injector
AssigneeGM Global Technology Operations LLC
InventorsOgnyan N. Yanakiev, Charles E. Solbrig
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Abstract
A control system includes a first module, a fuel determination module, a temperature error correction module, and a hydrocarbon injection control module. The first module determines a temperature difference between a desired inlet temperature of a particulate filter (PF) and an outlet temperature of a first catalyst. The fuel determination module determines an uncorrected desired fuel value based on the temperature difference, an ambient temperature, and a mass flow of exhaust gas. The temperature error correction module generates a desired fuel value based on the uncorrected desired fuel value. The hydrocarbon injection control module controls a hydrocarbon injector based on the desired fuel value.
Claims20
A control system comprising:
- a first module that determines a temperature difference between a desired inlet temperature of a particulate filter (PF) and an outlet temperature of a first catalyst;
- a fuel determination module that determines an uncorrected desired fuel value based on the temperature difference, an ambient temperature, and a mass flow of exhaust gas;
- a temperature error correction module that generates a desired fuel value based on the uncorrected desired fuel value;
- and
- a hydrocarbon injection control module that controls a hydrocarbon injector based on the desired fuel value.
A method comprising:
- determining a temperature difference between a desired inlet temperature of a particulate filter (PF) and an outlet temperature of a first catalyst;
- determining an uncorrected desired fuel value based on the temperature difference, an ambient temperature, and a mass flow of exhaust gas;
- generating a desired fuel value based on the uncorrected desired fuel value;
- and
- controlling a hydrocarbon injector based on the desired fuel value.
Dependencies are inferred from the claim text.