General Electric Company

Other

Pin Zeng

Prashant Srinivasan

Jared J Wentz

Mark James Lemke

Daniel M Lamberson

Ryan Michael Rudnitzki

A system includes a controller that has a processor. The processor is configured to receive a first signal from a first sensor indicative of a first exhaust measurement, wherein the first sensor is disposed at a catalytic converter system inlet of a catalytic converter system. The processor is further configured to derive one or more of an estimated length, estimated volume, or estimated transport delay of an exhaust conduit based on the first signal, wherein a first end of the exhaust conduit is connected to an engine outlet of a engine, and a second end of the exhaust conduit is connected to the catalytic converter system inlet; and to apply the one or more of estimated length, estimated volume, or estimated transport delay of the exhaust conduit during control of the engine.

Systems and methods for using transport time to estimate engine aftertreatment system characteristics

In one embodiment, an engine system may include an engine control system configured to receive a first pressure signal transmitted from a first pressure sensor disposed downstream from a throttle valve, receive a first temperature signal transmitted from a first temperature sensor disposed downstream from the throttle valve, derive a first pressure representative of the first pressure signal, derive a first temperature representative of the first temperature signal, derive a desired air-fuel mixture flow through the throttle valve, derive a first throttle position using a model, wherein the model is configured to use the desired air-fuel mixture flow, the first pressure, and the first temperature as model input, derive a second throttle position using a map, compare the first and second throttle positions, and apply the first throttle position to control the throttle valve when the first and second throttle positions are within one or more calibrated thresholds.

System and method for model based and map based throttle position derivation and monitoring

A catalyst system may include a catalyst and a first sensor that detects contents of gases entering the catalyst and reports the contents of the gases entering the catalyst to an emissions control module. A second sensor and a third sensor may detect contents of gases exiting the catalyst and report the contents of the gases exiting the catalyst to the emissions control module. The emissions control module may determine an air-fuel ratio based on the contents of gases entering the catalyst and the contents of gases exiting the catalyst. The emissions control module may instruct an air-fuel regulator to operate an engine using the air-fuel ratio.

Rich burn internal combustion engine catalyst control

The Toilet Warm Water and Air Ejection Device is a sanitary device for the flush toilets. People can use this device to wash and then dry up their anus area using warm water jet and warm air jet after they used the toilet. The concept of this device can be used for new toilet designs. The device is simple and can also be used as an added on system to install onto existing toilets. A close up PTC water heater is integrated into the device to produce fast available warm water. An electric air heater (hair dryer for example) is used to provide warm air. Two moveable nozzles (tied-together) are used for ejecting warm water and air. During washing process, one nozzle ejects warm water. During drying up process, both nozzles eject warm air. The moveable nozzles can be rotated out of the toilet after they are used.

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Oconomowoc, WI, United States of America

Pin Zeng