Scania Launches New 450hp Engine with SCR Only

[kscarbel2]

Press Release / June 3, 2014

Scania has now further broadened its already comprehensive range of Euro 6 (EPA2010) certified truck engines. Anyone who needs 450 horsepower, not least European customers with tractor-trailers, can now choose between two versions of Scania’s well known 13-litre engines at that power level.

In its latest config­uration it uses only SCR aftertreatment technology, and thus is expected to become a strong favorite among customers, especially long-haulage firms who prioritize low diesel consumption.

“Our success with the 410 hp version of the 13-litre engine with only SCR has spurred us to go further down the road to reduce both complexity and diesel consumption,” says Joel Granath, Head of Product Management for Scania trucks.

“Our customers now have a range of 18 different models of Euro 6 engines to choose from. This gives them unique opportunities to tailor their powertrains for optimal performance, regardless of driving conditions or application.”

Because Scania engineers solved the puzzle of meeting tough Euro 6-emission require­ments using only SCR – despite the high power range – customers now get in­creased freedom of choice with simpler solutions.

The new Scania engine model – DC13 147 – requires neither a variable geometry turbocharger nor an EGR cooler.

“Just as with the extremely fuel-stingy 410 hp model that appeared last autumn, this engine is ideal, especially for European long-haulage customers who prioritize low fuel consumption, but don’t want to give up torque or driver comfort,” states Granath.

“According to our own calculations running a Scania Streamline, this results in a 1 percent fuel saving compared with the previous model using both EGR and SCR – everything else being equal.”

Engines using only SCR technology require more AdBlue (DEF), on the other hand. In the case of Scania, this is normally an average of 6 percent of diesel fuel, while engines with EGR and SCR normally come up to 3 percent.

For those who want to optimize their diesel fuel capacity, Scania offers a wide assortment of AdBlue tanks, including special solutions that use vacant space inside the frame in an intelligent way.

The new engine model has, just like its predecessor, a very impressive torque: maxi­mum torque is 2,350 Nm and is available right from 1,000 r/min, which assures very good driveability.

“We are convinced that Scania’s 450hp engine with only SCR will become a popular workhorse out on the highway,” says Granath. “Using only SCR for aftertreatment has been shown to lead to lower consumption, and it also saves some weight.”

“Euro 6 customers who have the advantage of being able to run on up to 100 percent biodiesel should look at the specially adapted version of Scania’s 450 hp engine range. That version uses both EGR and SCR for aftertreatment, just as before.

http://www.scania.com/Images/wkr0006_tcm40-427362.pdf

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[kscarbel2]

Scania’s new 450hp non-EGR powerplant meets Euro-6 (EPA2010) emissions levels using only SCR. As a result, the engine is inhaling 100 percent fresh air without any reduction in oxygen levels.

Unlike engines with EGR, no percentage of fresh air intake is reduced, displaced by recirculated levels of exhaust gases (typically ranging from 18 to 30 percent).

Without EGR (exhaust gas recirculation) piping, the “SCR only” powerplant realizes a weight savings of 88 pounds (40kg).

Scania’s pure SCR solution also allows the use of a fixed geometry turbocharger rather than a more complex variable geometry unit.

Exhaust aftertreatment remains the same, using a Tenneco-supplied module including an upstream NOx sensor, a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), AdBlue dosing module, two parallel selective catalytic reduction (SCR) catalysts with ammonium slip catalysts (ASC), and a downstream NOx sensor.

Note that muffler and aftertreatment are brilliantly integrated into one compact module for efficient chassis packaging.

While the folks in Gothenburg (Volvo) are toiling away at trying to extract and replicate the latest engine technologies of Daimler and MAN, the cutting edge engineers of the global truck industry at Scania continue a tradition of impressive innovation. Scania powertrain engineering truly is the benchmark for the global truck industry.

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[fullfuel01]

Am I wrong to believe in the Scania engine?

[Bullheaded]

I hope this is the future coming. I see Cummins already has a motor tested at 500 h.p. that doesn't have egr, and John Deere has one that has scr and no dpf muffler.

I can live with urea if we can get rid of DPF's.

[Dirtymilkman]

If the whole world went Euro-6 all we'd need is scr and we'd be better off.

[kscarbel2]

If the whole world went Euro-6 all we'd need is scr and we'd be better off.

The US does indeed need to join the rest of the world and use the "Euro" emissions standards, abandoning EPA2010 and adopting Euro-6.

Currently, with or without EGR, a DPF is still needed to reach Euro-6/EPA2010 (we're VERY close to not needing it). But advances are being made which could change that. New forms of ultra-high pressure injection are in development, which could possibly eliminate the need for a DPF. So the possibility of a non-EGR engine with SCR, sans a DPF, is a future possibility. Of course, the entire powertrain continues to evolve as we speak. Keep an eye on Scania for leading edge developments in heavy truck diesel engine technology.