Fuel governor for controlled autoignition engines

摘要

Methods and systems for controlling combustion performance of an engine are provided. A desired fuel quantity for a first combustion cycle is determined. One or more engine actuator settings are identified that would be required during a subsequent combustion cycle to cause the engine to approach a target combustion phasing. If the identified actuator settings are within a defined acceptable operating range, the desired fuel quantity is injected during the first combustion cycle. If not, an attenuated fuel quantity is determined and the attenuated fuel quantity is injected during the first combustion cycle.

主权项

1. A method for controlling combustion performance of an engine, the method comprising:
determining a desired fuel quantity for a first combustion cycle; determining whether one or more engine actuator settings required during a subsequent combustion cycle to cause the engine to approach a target combustion phasing will be within a defined acceptable operating range if the desired fuel quantity is injected during the first combustion cycle; when the one or more engine actuator settings required during a subsequent combustion cycle to cause the engine to approach a target combustion phasing are predicted to be within the defined acceptable operating range if the desired fuel quantity is injected during the first combustion cycle, injecting the desired fuel quantity during the first combustion cycle; and when the one or more engine actuator settings required during a subsequent combustion cycle to cause the engine to approach a target combustion phasing are predicted to be outside the defined acceptable operating range if the desired fuel quantity is injected during the first combustion cycle,
determining an attenuated fuel quantity, andinjecting the attenuated fuel quantity during the first combustion cycle.