The new Range Rover Evoque has become one of the first SUVs to be certified under the new NOx emissions targets, Real Driving Emissions Stage 2 (RDE2), ahead of the official legislative introduction for new models in January 2020.
While all current JLR models already meet the standards required by the first phase of the Real Driving Emissions (RDE) testing procedure, the new Evoque in D150 manual FWD trim now complies with the second phase requirements that state that the vehicle must emit 80mg/km or less of NOx.
“Meeting the standards for this certification almost two years ahead of schedule is a real achievement and a result of collaboration within our engineering team to develop advanced engine and exhaust technologies,” said Nick Rogers, executive director of product engineering, JLR.
“The new Range Rover Evoque uses a low-friction engine design, which has reduced real-world driving NOx emissions by 90% since 2010, demonstrating vast progress for Jaguar Land Rover,” added Rogers.
This early certification has been achieved using advanced engine and exhaust technologies. The system injects AdBlue diesel exhaust fluid into the exhaust gas, where it reacts with the NOx and converts it into nitrogen and water, ensuring that the Ingenium diesels comply with the stringent Euro 6d-Final limits.
With its low-friction engine design, NOx emissions are also minimized during warm-up as the vehicle reaches optimum temperature. In addition, efficient DPFs are integrated into the aftertreatment system and trap 99.9% of soot as the exhaust gas passes through them.
In addition to RDE2 compliance on the D150 manual FWD variant, improvements to CO₂ emissions across the new Range Rover Evoque range have been achieved through the addition of enhanced active vanes that improve aerodynamic efficiency by 14%.
These remain closed during the engine’s warm-up phase, allowing it to reach operating temperature more quickly, but also close in conditions when additional cooling is no longer required – such as a steady-state cruise – which reduces drag.
The introduction of MHEV technology improves emissions further, harvesting energy normally lost during deceleration, which can then be redeployed as torque to assist the engine under acceleration.