renault duster

Group Renault has launched the introduction of new diesel d Blue

Leonid Popov, June 8, 2018. Photo and illustration: Renault, Dacia

The introduction of new diesel units began with the Dacia Duster model. Since June 7, the Blue dCi Duster has gone on sale in France.

Volkswagen dieselgate generated a wave of inspections of diesel engines of various companies. One of the biggest questions was to Renault. Now the group has found that the recirculation of exhaust gases (EGR) on passenger models is not enough to deal with nitrogen oxides in the exhaust. And now dCi dies were replaced by new ones – Blue dCi, equipped with a selective neutralizer SCR, previously used in the commercial line of the group.

Group Renault has launched the introduction of new diesel d Blue

The SCR system fights nitrogen oxides by injecting AdBlue fluid. This is an aqueous solution of urea (carbamide). In a stream of hot gases, urea decomposes into ammonia and carbon dioxide. Ammonia reacts with NOx and converts these compounds into nitrogen and water.

Half-liter units of Blue dCi turned out to be five “horses” more powerful than their predecessors dCi. Dacia Duster has received new engines first. Instead of dCi 90 (210 N • m) and dCi 110 (260 N • m), he now has a Blue dCi of 95: 240 N • m (note, the moment is higher!) And Blue dCi 115: 260 Newton meters. Their output is equal to 95 and 115 hp. respectively. With both engines, the crossover accelerates from zero to one hundred per second faster than before: for 12.6 and 10.5 seconds with a six-speed “mechanics” and a front drive. By the way, with the new engines, the gear ratios in the transmission were changed. And also these engines have a new air-to-water heat exchanger and an injection pressure increased to 2000 bar.

renault duster

Group Renault has launched the introduction of new diesel d Blue

Leonid Popov, June 8, 2018. Photo and illustration: Renault, Dacia

The introduction of new diesel units began with the Dacia Duster model. Since June 7, the Blue dCi Duster has gone on sale in France.

Volkswagen dieselgate generated a wave of inspections of diesel engines of various companies. One of the biggest questions was to Renault. Now the group has found that the recirculation of exhaust gases (EGR) on passenger models is not enough to deal with nitrogen oxides in the exhaust. And now dCi dies were replaced by new ones – Blue dCi, equipped with a selective neutralizer SCR, previously used in the commercial line of the group.

Group Renault has launched the introduction of new diesel d Blue

The SCR system fights nitrogen oxides by injecting AdBlue fluid. This is an aqueous solution of urea (carbamide). In a stream of hot gases, urea decomposes into ammonia and carbon dioxide. Ammonia reacts with NOx and converts these compounds into nitrogen and water.

Half-liter units of Blue dCi turned out to be five “horses” more powerful than their predecessors dCi. Dacia Duster has received new engines first. Instead of dCi 90 (210 N • m) and dCi 110 (260 N • m), he now has a Blue dCi of 95: 240 N • m (note, the moment is higher!) And Blue dCi 115: 260 Newton meters. Their output is equal to 95 and 115 hp. respectively. With both engines, the crossover accelerates from zero to one hundred per second faster than before: for 12.6 and 10.5 seconds with a six-speed “mechanics” and a front drive. By the way, with the new engines, the gear ratios in the transmission were changed. And also these engines have a new air-to-water heat exchanger and an injection pressure increased to 2000 bar.

Group Renault has launched the introduction of new diesel d Blue

The average fuel consumption of the Duster Blue dCi remained at the same level as with the previous diesels: 4.4 l / 100 km (both at 95 and 115 hp). AdBlue fluid in Europe is sold at the gas station, it is available from dealers and is also poured at the maintenance. One refueling is enough for about 10-20 thousand km. With a remainder of 2400 km, a warning appears on the appliance.

Following the Duster, the company will gradually distribute new diesel engines throughout the entire range of Dacia and Renault brands. The step is understandable, because in Europe are introduced more stringent standards of toxicity for diesel engines – Euro 6d-Temp. Since September 2018, all new models that have been approved for a TC type for the first time must comply with this standard, and since September 2019 and all have already been released. From the known Euro 6 standard, the new standard differs in the test procedure: not on the stand, but on the road in real conditions (RDE – Real Driving Emissions). Even taking into account the indulgence in the form of increasing the NOx emission limit for RDE, it is not easy to get into tolerances. A total of 0.08 g / km is solvable in the WLTP cycle, which was introduced instead of NEDC from September 2017, and 0.168 g / km is the norm in the RDE test.