Emissions sensors for fuel control in engines
AssigneeHoneywell International Inc.
InventorsGregory E. Stewart, Michael L. Rhodes
Life of this patent
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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.
Claims14
An engine control system comprising:
- a fuel controller connected to an engine;
- a PM sensor situated in an exhaust system of the engine and connected to the fuel controller;
- and
- at least one additional exhaust emissions sensor situated in the exhaust system, said at least one additional exhaust emissions sensor configured to sense an exhaust emissions component different than that sensed by said PM sensor.
A method for controlling emissions from an engine, comprising:
- sensing NOx in an exhaust of an engine;
- sensing PM in the exhaust;
- and
- controlling fuel to the engine to control NOx and PM in the exhaust;
- wherein said controlling step is based, at least in part, on the sensed NOx and/or PM fed to a fuel controller.
Means for controlling emissions from an engine, comprising:
- means for controlling libel to the engine;
- and
- means for sensing emissions in an exhaust of the engine, connected to the means for controlling fuel;
- wherein the means for sensing emissions includes two or more sensors situated in an exhaust system of the engine, where each of the two or more sensors is adapted to sense a different exhaust parameter of the exhaust of the engine other than temperature, wherein one of the two or more sensors is a PM sensor.
Dependencies are inferred from the claim text.