Exhaust Gas RECIRCULATION (EGR)
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.
There are two main external Exhaust Gas Recirculation (EGR) systems that are used on the engine.
- High Pressure (HP) EGR
- Low Pressure (LP) EGR
EGR is used to cool the combustion in the cylinders by introducing exhaust gases without oxygen (exhaust gas). This in turn allows the use of smaller fuel injections, improving emissions and fuel economy.
The following systems are used for specific markets:
- EU4 markets - use a HP EGR valve and cooler
- EU5 markets - use both HP and LP EGR valves. The LP system uses an EGR cooler, there is no cooler for the HP system
- EU6 markets - use both HP and LP EGR valves. The LP system uses an EGR cooler and a cooled EGR tube from the exhaust manifold to the HP EGR valve, there is no cooler for the HP system
- North America Specification (NAS) markets - use both HP and LP EGR valves. Both the HP and LP systems use an EGR cooler.
The valves are controlled by the Powertrain Control Module (PCM). For additional information, refer to: Electronic Engine Controls / Engine .