NOx Sensors only at
MCT Technical!
The aim is to make engine combustion as efficient as possible while keeping nitrogen oxide emissions within legal limits.
Most vehicles use two NOx sensors, installed before and after the SCR catalytic converter, which are used in most Euro 5 and 6 diesel vehicles.
A complex ceramic chip in the sensor head takes measurements directly in the hot exhaust stream, after which the electronics continuously transmit the NOx values via the data bus to the ECU.
When the sensors detect that too much NOx is being emitted, they pass this on to the SCR system so that it can adjust the urea levels accordingly. Their function is therefore to monitor the NOx conversion efficiency of the catalyst. The sensors can work as part of a feedback loop to the control unit in the emissions system to make real-time adjustments and optimize NOx conversion.
The ECU can then make adjustments to optimize NOx conversion performance. The most common aftertreatment systems have two NOx sensors: one “upstream” on the turbo side of your Particulate Filter (DPF) and a second “downstream” on the outlet side of your Catalyst (DOC). The two signals, sent directly to your Engine Control Module, are compared to determine the “conversion efficiency” of your exhaust system. In the case of SCR technology, feedback can also be provided to the urea metering system, while in the case of lean NOx trap catalysts, a feedback loop can signal the trap to regenerate.
As the exhaust enters the sensor, Oxygen is pumped out and the NOx reaches a second chamber where the gas is exposed to a catalyst that calculates this information and reports it to your computer.
If you are planning to replace the DPF or DOC, it is important to replace the NOx sensors to ensure optimum performance of your system. We would be happy to support you in this regard. With our wide range of products across Europe, we offer NOx sensors for almost all applications and we are continuing to add more vehicle applications. Contact us by filling in our form for more information and to find the solution that best suits your needs.
MCT Technical is the leading company in the sector in the production and sales of advanced Nox sensors. Using innovative 2 technologies, MCT Technical prioritizes customer satisfaction with its products offering high quality and reliability.
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