FRANKFURT -- Daimler said it will spend 3 billion euros ($3.35 billion) to curtail diesel exhaust pollution levels by modifying its engines and exhaust treatment systems including through a software update for some Mercedes-Benz passenger cars.
Mercedes will equip its entire range of diesel cars in Europe with selective catalytic reduction (SCR) technology and roll out particulate filters for gasoline engines, Daimler said today in a statement.
Daimler said improvements in engine technology include optimizations of turbocharging, fuel injection and intercooling, as well as the application of new materials which help extend exhaust-gas recirculation treatments at lower operating temperatures.
Daimler said its newly developed four-cylinder diesel engine, called OM 654, fulfills stricter emission limits including real-world tests to be introduced in the EU in September 2017.
The four-cylinder engine is the first member of a modular engine family that will be applied throughout the portfolios of Mercedes cars and vans. Several levels of power output are planned, as well as longitudinal and transverse installation in vehicles with front-, rear- and all-wheel drive, Daimler said.
Mercedes will equip its entire range of diesel cars in Europe with this latest engine family including SCR technology by 2019 at the latest, it said.
The engine debuted in the latest E class in the E 220 version. The engine emitted less NOx than the limit of 80 mg/km in real-word driving tests confirmed by DEKRA, a German vehicle inspection company, Daimler said.
"In some cases, the NOx emissions were at the very low level of between just 13 and 21 mg/km even at low ambient temperatures," it said.
The 3 billion euros includes a 2.6 billion euros investment announced in February.
Reuters contributed to this report