US 8,505,278 B2 · Engine system properties controller

Abstract

Various embodiments of an apparatus, system, and method are disclosed for manipulating the properties of engine exhaust at least partially through the engine's control system to increase the efficiency and performance of the exhaust aftertreatment system. According to one representative embodiment, an engine system properties controller includes an exhaust aftertreatment system module, a powertrain module, and a combustion module. The exhaust aftertreatment system module is configured to generate an exhaust conditions vector request. The powertrain module is configured to receive the exhaust conditions vector request from the exhaust aftertreatment system module and generate at least one engine operating condition target based on the exhaust conditions vector request. The combustion module is configured to receive the at least one engine operating condition target and generate at least one engine controls command based on the at least one engine operating condition target.

Claims19

Dependent claims

An engine system properties controller for controlling an internal combustion engine system, comprising:

an exhaust aftertreatment system module configured to generate an exhaust conditions vector request representing a demand for the internal combustion engine system to produce exhaust gas having conditions that if produced by the internal combustion engine system are estimated to result in a desired efficiency of an exhaust aftertreatment system of the internal combustion engine system;
a powertrain module configured to receive the exhaust conditions vector request from the exhaust aftertreatment system module and generate at least one engine operating condition target based on the exhaust conditions vector request;
and
a combustion module configured to receive the at least one engine operating condition target and generate at least one engine controls command based on the at least one engine operating condition target;
wherein the exhaust aftertreatment system module, powertrain module, and combustion module comprise one or more of logic hardware and non-transitory machine-readable storage media including an executable code.

2 more elements

An engine system, comprising:

an internal combustion engine configured to generate exhaust gas;
an exhaust aftertreatment system communicable in exhaust gas receiving communication with the internal combustion engine, the exhaust aftertreatment system comprising a plurality of exhaust aftertreatment system components;
and
a controller communicable in data receiving communication with the exhaust aftertreatment system and command transmitting communication with the internal combustion engine;
wherein the controller is configured to generate an exhaust conditions vector request based on data received from the exhaust aftertreatment system and configured to transmit commands to the internal combustion engine for achieving desired engine output exhaust properties corresponding with the exhaust conditions vector request;
and
wherein the exhaust conditions vector request represents an average of a plurality of exhaust condition demands each associated with exhaust conditions that if generated by the internal combustion engine are estimated to result in an optimum performance of a respective one of the plurality of exhaust aftertreatment system components.

4 more elements

A method for controlling engine system properties of an internal combustion engine, comprising:

determining an exhaust conditions vector request from an exhaust aftertreatment system, the exhaust conditions vector request representing a demand for the internal combustion engine system to produce exhaust gas having conditions that if produced by the internal combustion engine are estimated to result in a desired efficiency of an exhaust aftertreatment system of the internal combustion engine system;
determining engine operating conditions targets based at least partially on the exhaust conditions vector request and an objective factor;
and
commanding at least one engine system component based on the engine operating conditions targets.

1 more element

Dependencies are inferred from the claim text.

Engine system properties controller

Life of this patent

Engine system properties controller

Life of this patent

Abstract

Claims19