Gm Global Technolgoy Operations, Inc.

Qian Chen

Tim Chang

Charles Henry Folkerts

Hongxun Gao

An engine control module includes a target intake carbon dioxide (CO2) module that determines a target intake CO2 concentration. An intake CO2 estimation module estimates an actual intake CO2 concentration. The engine control module adjusts fuel injection based on the target intake CO2 concentration and the actual intake CO2 concentration.

Diesel transient combustion control based on intake carbon dioxide concentration

A method of switching a combustion mode of a diesel engine may include determining a carbon dioxide concentration in an intake manifold of a diesel engine, operating the diesel engine in a first combustion mode, and operating the diesel engine in a second combustion mode when the determined carbon dioxide concentration is greater than a predetermined carbon dioxide concentration value.

Diesel combustion mode switching control based on intake carbon dioxide (CO2) concentration

An engine control system that includes a throttle and an exhaust gas recirculation (EGR) valve to regulate a mass air flow (MAF) into an engine includes a first module that determines a MAF control command based on a MAF error. A second module determines an EGR valve position based on the MAF control command and a maximum EGR valve range and the throttle resolution. The throttle is fully open and the EGR valve based on the EGR position when the desired MAF is less than the maximum EGR valve range.

Coordinated control of throttle and EGR valve

A combustion mode switching control system for diesel engines is provided. The system includes: a switch determination module that initiates a switch request to switch between at least one of a premixed compression ignition (PCI) mode and a diesel combustion mode based on engine speed and at least one of fuel quantity and torque; a transition module that commands the at least one of the PCI mode and the diesel combustion mode based on the switch request; and a control module that controls at least one of target airflow, desired fuel quantity, and desired fuel injection timing based on the command.

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Rochester, MI, United States of America

Qian Chen