Delphi has evaluated its NOx sensors against the original equipment (OE) component and three leading aftermarket competitors to assess reliability, durability, and performance.
The benchmark evaluation tested each sensor across four operational criteria: probe leakage, sensor accuracy, high-temperature leakage, and simulated real-world driving conditions.
In the probe leakage assessment, Delphi recorded a leakage rate of 0.02 ml, which was lower than the other tested parts. This figure sat within the standard engineering limit, contrasting with the three alternative aftermarket brands which registered leakage values between 0.3 ml and 0.5 ml.
During the sensor accuracy phase, Delphi’s components aligned closely with the baseline OE data across all operational stages, maintaining consistent readings at elevated performance ranges.
Thermal stability testing under high temperatures showed stable oxygen ($O_2$) readouts for the Delphi sensors. The internal seal retained its structural integrity under high thermal stress, whereas the readings of alternative brands showed fluctuations during temperature changes.
The real-world driving simulation tracked sensor feedback across varying vehicle loads, road speeds, and exhaust temperatures. Delphi’s sensor maintained tracking closest to the OE data points in both urban and motorway simulations, whilst competing brands demonstrated greater data deviation under dynamic urban engine loads.
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