Abstract: 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.

Abstract: A system includes a cylindrical portion coupled to a conically-shaped outlet portion of a three-way catalyst assembly. The cylindrical portion is coupled to the conically shaped outlet portion along a fluid flow path exiting the conically-shaped outlet portion. The cylindrical portion is coupled to a narrower end of the conically-shaped outlet portion. At least one oxygen sensor connection is disposed on the cylindrical portion to enable an oxygen sensor coupled to the at least one oxygen sensor connection to be disposed perpendicular to a longitudinal axis of the cylindrical portion.

Abstract: A system includes a controller configured to compare a nitrogen oxides (NOX) concentration within treated exhaust gases from a combustion engine after flowing through a first catalyst assembly and a second catalyst assembly relative to a NOX threshold value, to determine a change in O2 concentration 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 O2 concentration in the treated exhaust gases if the NOX concentration is greater than the NOX threshold value.

Abstract: The subject matter disclosed herein relates to a system and method for monitoring and controlling a combustion engine. In one embodiment, a system includes a controller configured to control operations of a combustion engine, to receive a signal from at least one knock sensor coupled to the combustion engine, to determine a knock margin value from the signal, and to estimate a fuel quality value of a fuel injected into the combustion engine based at least on a comparison between the knock margin value and a laboratory performance data set.

Abstract: A system includes a controller configured to compare a nitrogen oxides (NOX) concentration within treated exhaust gases from a combustion engine after flowing through a first catalyst assembly and a second catalyst assembly relative to a NOX threshold value, to determine a change in O2 concentration 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 O2 concentration in the treated exhaust gases if the NOX concentration is greater than the NOX threshold value.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A system includes a catalyst assembly configured to mount along an exhaust flow path of a reciprocating combustion engine. The catalyst assembly includes a housing having an inlet, an outlet, and a flow path between the inlet and the outlet. The catalyst assembly also includes or more catalyst elements disposed in the housing along the flow path. The catalyst assembly further includes an emissions sampling probe integrated within the housing along the flow path.

Abstract: 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 NOx, 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 NH3 and 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.

Abstract: 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 NOx, 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 NH3 and 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.

Abstract: A system and a method of operating the system are presented. The system includes a first sensor, a second sensor and a catalyst. The catalyst is located between the first sensor and the second sensor in the path of an exhaust stream from an engine. The first sensor and the second sensors include noble metal electrodes, and are configured to measure concentration of a gaseous species and produce first and second sensor signals respectively. The system further includes a sulfur detector that is configured to receive the first and second signals, and configured to determine a sulfur concentration in the exhaust stream with a lambda value less than 1. The sulfur detector is configured to detect the concentration of sulfur by performing a calculation involving the first and second sensor signals; and by producing an output signal based on the determined sulfur concentration.