US Patent No. 9,376,979

FUEL GOVERNOR FOR CONTROLLED AUTOIGNITION ENGINES


Patent No. 9,376,979
Issue Date June 28, 2016
Title Fuel Governor For Controlled Autoignition Engines
Inventorship Shyam Jade, Ann Arbor, MI (US)
Erik Hellstrom, Ann Arbor, MI (US)
Anna Stefanopoulou, Ann Arbor, MI (US)
Li Jiang, Ann Arbor, MI (US)
Assignee Robert Bosch GmbH, Stuttgart (DE) The Regents of the University of Michiga...

Claim of US Patent No. 9,376,979

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, and
injecting the attenuated fuel quantity during the first combustion cycle.