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Home >> Jaguar >> 2020 >> XF Checkered Flag >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Electronic Engine Controls - INGENIUM I4 2.0L Diesel -- XE (X760)) >> Electronic Engine Controls - INGENIUM I4 2.0L Diesel >> Description And Operation >> Description >> Diesel Exhaust Fluid (Def) Components - EU5/6 And NAS Only >> Diesel Exhaust Fluid (DEF) Injector

Diesel Exhaust Fluid (DEF) Injector

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
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The Diesel Exhaust Fluid (DEF) injector is located in the exhaust system, downstream of the Diesel Particulate Filter (DPF) and delivers a metered amount of DEF into the exhaust pipe.

The DEF injector works at high pressures to provide complete atomization of the injected DEF. This ensures the Selective Catalyst Reduction (SCR) catalytic converter performs at its optimum performance.

The DEF injector is activated by a PWM signal, controlled by the PCM. A signal duty cycle of 3.33 Hz - 4 Hz determines the opening duration of the injector. The injector is designed to operate at a nominal operating pressure of 4.4 bar and 8.6 bar (58 lbf/in2 and 116 lbf/in2 ).

Heat, generated by the exhaust system, is dissipated through the injector by cooling fins built into the body of the injector.

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