US 11,668,259 B1 · Port-direct injection engine methods and systems optimizing fuel economy with particulate control

Abstract

Methods and systems for optimizing fuel economy and maintaining particulate emissions below a threshold of an engine system in a vehicle. An engine system has port fuel injection, direct injection, variable compression ratio, and independent compression/expansion. A processor predicts settings for the four systems that optimize for a fuel economy that is maximized. A particulate rate of the engine system is computed based on the settings. A determination is made of whether the particulate rate is below a threshold. When the particulate rate is below the threshold, command signals are delivered to actuators of the systems to move to the settings. When the threshold is exceeded, the settings are revised to maintain the particulate below the threshold while optimizing for fuel economy.

Claims20

Dependent claims

A method for controlling an engine system that has a port fuel injection system, a direct injection system, a variable compression ratio system and an independent compression/expansion system, the method comprising:

predicting, by a processor, settings for each of a ratio of the port fuel injection system to the direct injection system, the variable compression ratio system, and the independent compression/expansion system that optimize for a fuel economy that is maximized;
computing, by the processor, a particulate rate of the engine system based on the settings;
determining, by the processor, whether the particulate rate is below a maximum threshold;
generating, by the processor and when the particulate rate is below the maximum threshold, command signals to actuators of the engine system to adjust the ratio of the port fuel injection system to the direct injection system, the variable compression ratio system, and the independent compression/expansion system to the settings, optimizing for the fuel economy that is maximized;
and
initiating, by the processor, adjustment of the actuators, based on the command signals.

3 more elements

A system for controlling an engine system comprising:

a port fuel injection system, a direct injection system, a variable compression ratio system and an independent compression/expansion system in the engine system;
and
a processor in communication with the engine system and configured to:
predict settings for a ratio of the port fuel injection system to the direct injection system, the variable compression ratio system, and the independent compression/expansion system that optimize for a fuel economy that is maximized;
compute a particulate rate of the engine system based on the settings;
determine whether the particulate rate is below a maximum threshold;
generate, when the particulate rate is below the maximum threshold, command signals to actuators of the engine system to adjust the ratio of the port fuel injection system to the direct injection system, the variable compression ratio system, and the independent compression/expansion system to the settings, optimizing for the fuel economy that is maximized;
and
initiate adjustment of the actuators, based on the command signals.

6 more elements

A system for controlling an engine system of a vehicle, the system comprising:

a port fuel injection system, a direct injection system, a variable compression ratio system, and an independent compression/expansion system in the engine system;
and
a processor in communication with the engine system and configured to:
predict settings for a ratio of the port fuel injection system to the direct injection system, the variable compression ratio system, and the independent compression/expansion system that optimize for a fuel economy of the engine system in the vehicle that is maximized;
compute a particulate rate of the engine system in the vehicle based on the settings, wherein the compute the particulate rate is based on a mapping of various particulate rates of the engine system in the vehicle;
determine whether the particulate rate is below a maximum threshold;
generate, when the particulate rate is below the maximum threshold, command signals to actuators of the engine system to adjust the ratio of the port fuel injection system to the direct injection system, the variable compression ratio system, and the independent compression/expansion system to the settings, optimizing for the fuel economy that is maximized;
revise, when the particulate rate is not below the maximum threshold, the settings for the ratio of the port fuel injection system to the direct injection system, the variable compression ratio system, and the independent compression/expansion system to maintain the particulate rate below the maximum threshold, wherein the optimize for the fuel economy that is maximized is limited by maintaining the particulate rate below the maximum threshold;
generate, when the particulate rate is not below the maximum threshold, revised command signals to the actuators;
reject the command signals, only when revised command signals are generated;
and
initiate adjustment of the actuators, based on one of the command signals and the revised command signals.

9 more elements

Dependencies are inferred from the claim text.

Port-direct injection engine methods and systems optimizing fuel economy with particulate control

Life of this patent

Port-direct injection engine methods and systems optimizing fuel economy with particulate control

Life of this patent

Abstract

Claims20