General Electric Company

Dennis John Spaulding

Maruthi Narasinga Rao Devarakonda

James Kristopher Von Der Ehe

Robert Earl McDowell

Robert Jarvis Selberg

Nathan Patrick Schaefer

Derek Christopher Sammons

A display system for an engine includes a processor configured to receive a first measurement indication relating to a measurement of a fuel control valve position of the engine, wherein the fuel control valve position is configured to control an air/fuel ratio of the engine. The processor is further configured to compare the first measurement indication to a first preset fuel control valve range, generate a first completion indication based on when the measurement is within the first preset fuel control valve range, and display the first completion indication on a display of the display system.

Human machine interface (HMI) guided mechanical fuel system adjustment

A system includes a controller configured to compare a nitrogen oxides (NO) concentration within treated exhaust gases from a combustion engine after flowing through a first catalyst assembly and a second catalyst assembly relative to a NOthreshold value, to determine a change in Oconcentration within the treated exhaust gases between the first and second catalyst assemblies upstream of a location of oxidant injection into the treated exhaust gases, and to adjust an air-fuel ratio of the combustion engine based on the change in Oconcentration in the treated exhaust gases if the NOconcentration is greater than the NOthreshold value.

Method and system for control of emissions in exhaust aftertreatment system

A system includes an exhaust aftertreatment system configured to treat emissions from a combustion engine. The exhaust aftertreatment system includes a first catalyst assembly having an outlet. The exhaust aftertreatment system also includes an ammonia slip catalyst (ASC) assembly configured to receive a fluid from the first catalyst assembly and to convert ammonia (NH3) within the fluid into nitrogen (N2), wherein the ASC assembly has an inlet. The exhaust aftertreatment system further includes a silencer disposed between the outlet of the first catalyst assembly and the inlet of the ASC assembly, wherein the silencer is configured to receive the fluid and an oxidant for mixing with the fluid provide sufficient oxygen in the fluid flowing into the inlet of the ASC assembly to enable the catalytic activity in the ASC assembly that coverts NH3 into N2, and the silencer is configured to mix the fluid and the oxidant.

Silencer for mid-bed air injection mixing

A passive mid bed air injection apparatus for an engine includes a three way catalyst positioned in an exhaust stream of the engine. The three way catalyst reduces NO, CO and HC from the exhaust stream. The three way catalyst includes an ammonia slip catalyst positioned in the exhaust stream of the engine. The ammonia slip catalyst is positioned downstream from the three way catalyst and oxidizes NHand CO from the exhaust stream. The three way catalyst includes an oxygen input disposed between the three way catalyst and the ammonia slip catalyst such that the oxygen input delivers air downstream from the three way catalyst and upstream from the ammonia slip catalyst. The oxygen input receives the air from a charged side of a forced induction device and delivers the air to the exhaust stream entering the ammonia slip catalyst. An associated method also provided.

Growing community of inventors

Waukesha, WI, United States of America

Dennis John Spaulding