Engine controller
AssigneeHoneywell International Inc.
InventorsGregory E. Stewart, Michael L. Rhodes
Life of this patent
Estimating the term…
Abstract
A system for controlling fuel to an engine to minimize emissions in an exhaust of the engine. There may be a controller connected to an actuator, for example a fuel control actuator, of the engine and to emissions sensors, such as an NOx and/or PM sensor, proximate to an exhaust output of the engine. The controller, for example a speed controller, may have an input connected to an output of a pedal or desired speed setting mechanism. A speed sensor at a power output of the engine may be connected to an input of the controller.
Claims20
An engine controller for controlling at least part of an engine of a vehicle, the engine controller comprising:
- one or more inputs for receiving one or more input signals from one or more emission sensors that are configured to detect NOx and PM emissions of an engine, wherein the NOx emissions and the PM emissions are dependent on each other and generally fall along a NOx-PM operating curve during operation of the engine;
- two or more outputs for providing control signals to two or more actuators that control two or more inputs to the engine;
- a controller coupled to the one or more inputs and the two or more outputs, the controller implementing a multi-parameter control algorithm that is configured to use the one or more input signals, and adjust two or more actuators of the engine via the two or more outputs to control the NOx emissions and the PM emissions of the engine such that both the NOx emissions and the PM emissions of the engine remain within corresponding NOx and PM emission limits;
- and
- the multi-parameter control algorithm is configured to rely on the one or more inputs that correspond to the NOx emissions along a first part of the NOx-PM operating curve, rely on the one or more inputs that correspond to the PM emissions along a second part of the NOx-PM operating curve, and rely on the one or more inputs that correspond to the NOx and PM emissions along a third part of the NOx-PM operating curve.
An engine controller for controlling at least part of an engine of a vehicle, the engine controller comprising:
- one or more inputs for receiving one or more input signals from one or more emission sensors that are configured to detect NOx emissions and/or PM emissions of an engine, wherein the NOx emissions and the PM emissions are dependent on each other and generally fall along a NOx-PM operating curve during operation of the engine;
- two or more outputs for providing control signals to two or more actuators that control two or more inputs of the engine;
- a controller coupled to the one or more inputs and the two or more outputs, the controller implementing a multi-parameter control algorithm that is configured to use the one or more input signals, and adjust the two or more actuators of the engine via the two or more outputs, to control the NOx and/or the PM emissions of the engine;
- and
- the multi-parameter control algorithm is configured to rely on the one or more inputs that correspond to the NOx emissions along a first part of the NOx-PM operating curve, rely on the one or more inputs that correspond to the PM emissions along a second part of the NOx-PM operating curve, and rely on the one or more inputs that correspond to the NOx and PM emissions along a third part of the NOx-PM operating curve.
An engine controller for controlling at least part of an engine of a vehicle, the engine controller comprising:
- a first input for receiving an input from an NOx sensor;
- a second input for receiving an input from a PM sensor;
- wherein the NOx emissions and the PM emissions are dependent on each other and generally fall along a NOx-PM operating curve during operation of an engine;
- one or more outputs for providing one or more control signals to one or more actuators that control one or more inputs to an engine;
- a controller coupled to the first and second inputs and the one or more outputs, the controller implementing a multi-parameter control algorithm that is configured to receive the first and second input signals from the NOx and PM sensors and adjust the one or more actuators of the engine to make a change to one or more of the inputs to the engine in order to produce a controlled change in each of the NOx emissions and the PM emissions of the engine;
- and
- the multi-parameter control algorithm is configured to rely on the one or more inputs that correspond to the NOx emissions along a first part of the NOx-PM operating curve, rely on the one or more inputs that correspond to the PM emissions along a second part of the NOx-PM operating curve, and rely on the one or more inputs that correspond to the NOx and PM emissions along a third part of the NOx-PM operating curve.
Dependencies are inferred from the claim text.