The Nitrogen Oxide Sensor (Part #4326864) by Cummins is a component designed to monitor nitrogen oxide (NOx) emissions in heavy-duty trucks. Its purpose is to ensure that the truck’s emissions remain within regulatory limits, contributing to environmental protection and compliance with emissions standards.
Nitrogen oxides (NOx) are a group of gases formed during the combustion process in diesel engines. They are produced when nitrogen and oxygen in the air combine under high temperature and pressure conditions. Nitrogen oxide sensors play a role in monitoring these emissions by measuring the concentration of NOx in the exhaust gases. This data is used to adjust the engine’s operation to minimize NOx output 1.
This part operates by measuring the levels of nitrogen oxides in the exhaust stream. It is typically positioned in the exhaust system where it can accurately sample the exhaust gases. The sensor employs electrochemical technology to detect NOx levels. It generates a voltage signal proportional to the NOx concentration, which is then sent to the engine control unit (ECU) for processing.