Methods and systems are provided for a dual function imaging device. In one example, a method may comprise imaging exhaust gas outside of a reverse engine condition via the imaging device. The imaging device may image a surrounding area during the reverse engine condition.

The present invention is an on-board vehicle emissions measurement system. The system comprises at least one sensor (CAP) downstream from the aftertreatment system, and optionally a sensor plugged into the vehicle diagnostics port, and a computer (SIN) including models (MOD VEH, MOD MOD, MOD POT). According to the invention, emissions determination is based on the signal from sensor (CAP) and on models (MOD VEH, MOD MOT, MOD POT).

An apparatus includes an aggregation circuit and a calibration circuit. The aggregation circuit is structured to interpret fuel data indicative of a fuel composition of a fuel provided by a fuel source from a plurality of gas quality sensors. Each gas quality sensor is associated with an individual engine system. Each engine system is positioned at a respective geographic location. The calibration circuit is structured to compare the fuel data received from each of the plurality of gas quality sensors that are located within a geographic area, determine a gas quality sensor miscalibration value for the plurality of gas quality sensors within the geographic area based on the fuel data received from each of the plurality of gas quality sensors within the geographic area, and remotely calibrate a miscalibrated gas quality sensor based on the gas quality sensor miscalibration value.

Disclosed is a sensor for spectrometric analysis of a variable-pressure gaseous fuel for automotive vehicle intended to be mounted in the flow circuit for the fuel linking the fuel tank to the engine of the vehicle. The sensor includes a circulation pipe for the variable-pressure gaseous fuel, a sliding guidance tube for an optical flux and a unit for displacement of the sliding guidance tube, on the basis of the variable-pressure gaseous fuel tapped off from the circulation pipe, so as to adapt the distance separating the first window from the second window as a function of the variation in pressure of the variable-pressure gaseous fuel circulating in the circulation pipe.

An optical sensor for sensing combustion products avoids fouling and damage to optical components by using a windowless design in which an air curtain through an orifice provides a constantly refreshing transparent shield protecting the optical components from corrosive combustion gases and resisting the accumulation of particulates that might otherwise foul a static window.

Disclosed is a sensor for spectrometric analysis of a variable-pressure gaseous fuel for automotive vehicle intended to be mounted in the flow circuit for the fuel linking the fuel tank to the engine of the vehicle. The sensor includes a circulation pipe for the variable-pressure gaseous fuel, a sliding guidance tube for an optical flux and a unit for displacement of the sliding guidance tube, on the basis of the variable-pressure gaseous fuel tapped off from the circulation pipe, so as to adapt the distance separating the first window from the second window as a function of the variation in pressure of the variable-pressure gaseous fuel circulating in the circulation pipe.

Methods and a sensor module for use in controlling operation of a gas turbine system are provided herein. The sensor module is coupled within a combustion system and is configured to obtain an aspirated exhaust sample of exhaust flowing through an exhaust duct. The exhaust is generated by the combustion system. The aspirated exhaust sample is analyzed to determine a plurality of exhaust parameters. The sensor module also controls at least one combustion system parameter in a closed loop emission control (CLEC) system based on at least one of the plurality of exhaust parameters.

Systems and methods are provided for a camless reciprocating engine control system that uses laser absorption spectroscopy (LAS) sensors and artificial intelligence/machine learning to optimize engine operation. The control system evaluates LAS data in real time or substantially real time to optimize the operation of the engine through dynamic management of camless engine components such as intake valves, exhaust valves, fuel injectors, spark plugs, and variable compression mechanisms.