High tech sensors

11 June 2014  

NTK sensors are used in many new models as they come off the factory production line, including the Volkswagen Golf VII. The 1.2 TSI model uses a binary Lambda sensor of the OZAS-S type which regulates the mixture, the 1.4 TSI uses a linear ZFAS-U type as a regulating sensor and the OZAS-S type acts as a diagnostic sensor. NTK temperature sensors in diesel engines work with close coupled exhaust systems, a CTAS-T sensor controls the exhaust temperature upstream of the turbo charger. NGK is also the sole supplier of NTK Lambda sensors for Fiat’s TwinAir engine with Fiat, capable of detecting the air-fuel ratio over a broad range of operating points. The company advises garages to fit a new NTK Lambda sensor whenever the cat is replaced – a worn or failed sensor can result in increased fuel consumption, uneven running and poor performance.