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Frankfurt Preview: Mazda CX-7 to debut new diesel SCR system

Mazda will be showing off the newly refreshed CX-7 with the latest MZR-CD 2.2-liter diesel next month at the Frankfurt Motor Show. This will be the first Japanese brand diesel to feature an selective catalytic reduction system. Like other SCR systems, this one uses urea injection to convert NOx emissions to nitrogen and water. The AdBlue (aqueous urea solution) is stored in a tank under the rear cargo area and injected into the exhaust stream ahead of the catalytic converter. The urea tank is sized to support service intervals of about ... Read more →

Pilot Travel Centers roll out diesel exhaust fluid distribution network Jeremy Korzeniewski

As our nation's legislators continue to make it more and more difficult for diesel engines to meet tough new emissions requirements, Pilot, the country's largest operator of travel centers (aka truck ...

Mazda launches 2009 CX-7 in Europe with urea selective catalytic reduction system Jeremy Korzeniewski

When the 2009 Mazda CX-7 hits European dealerships this year, the SUV will carry the first production urea selective catalytic reduction (SCR) system from a Japanese automaker. Mated with the ...

PickupTrucks.com looks at Diesel Exhaust Fluid Jeremy Korzeniewski

When 2010 rolls around in about nine months, all automakers that offer diesel vehicles in the United States will need to meet new requirements that will mandate a 90 percent reduction in nitrogen ...

Mercedes' new BlueTEC diesels will not start if urea runs out Sam Abuelsamid

Those of you planning to buy the new Bluetec diesel SUVs from Mercedes Benz will want to make sure you don't miss your regular service intervals or ignore warning lights. If you do, you might find ...

BASF explains how diesel catalysts work 1 year ago on Autoblog Green

Catalytic converters are quite common for gasoline engines but diesel catalysts are less known, in part because they face greater challenges. Still, diesel catalysts have not disappeared because they are efficient and, when you start your car, they don't produce heaps of CO2. Their main problem is ...

Pouring urea into the ocean to absorb CO2 2 years ago on Autoblog Green

Could urea be a savior when it comes to reducing atmospheric carbon dioxide? By now we all know about injecting urea into diesel engine exhaust to reduce emissions of nitrogen oxides. An Australian company has now received permission from the government of the Philippines to dump urea into the Sulu ...

Australian diesels: not so squeaky clean... 2 years ago on Autoblog Green

Before the low sulfur diesel fuel that has become common here in the United States, it was impossible for automakers to install filters which would allow diesel engines to meet the requirements which were being imposed upon them. Fortunately, everything is coming together here in the States to allow ...

Removing nitrogen-oxide emissions from diesel exhausts without urea 2 years ago on Autoblog Green

Whether or not you believe in global warming, nitrogen-oxides, or NOx, definitely does contribute to acid rain and smog, which are not debatable. Because NOx is emitted in large quantities from the exhaust of diesel engines, something needs to stop it from entering our atmosphere. One way to do ...

Urea, uh, urine: More than just for BlueTec! For batteries too? 2 years ago on Autoblog Green

While perusing "the internets" for green-like automotive news, I stumbled upon a post about making batteries using various components, including urine. Urea is already in use for the BlueTec system in diesel cars and trucks, how about a hybrid with a urea tank for "rechargeable" batteries. Would ...

Mercedes E320 Bluetec arrives as 45-State Vehicle 3 years ago on Autoblog Green

While DaimlerChrysler announced at the start of this year it would be introducing its E320 BLUETEC with clean diesel technology as a 50-state vehicle, the car will be hitting showrooms as a 45-state compliant car. BLUETEC, DaimlerChrysler's aftertreatment system promises to meet the upcoming EPA ...

Follow-up on EPA's plans to release urea guidelines in a few weeks 3 years ago on Autoblog Green

Following up on Derrick's post from yesterday, one other option the Environmental Protection Agency (EPA) may use is to require the urea refill interval to be at least as long as the manufacturer's oil change interval, allowing the urea refill to coincide with oil changes. If you missed yesterday's ...

EPA to set urea guidelines by October 3 years ago on Autoblog Green

By 2010, all diesels sold in the U.S. will have to meet Tier 2 Bin 5 emissions levels, the same standards as their gas-powered counterparts. Even though we're used to talking about diesels as green machines, they still have the issue of nitrous oxide (NOx) emissions with which they need to ...

BMW diesel cars in U.S. by 2008 3 years ago on Autoblog Green

Reports from the British International Motor Show, which starts tomorrow, revealed BMW plans to have diesel-powered cars available in the U.S. by 2008. The company plans to use a urea-based additive system to meet the strict U.S emissions standards. The system will make the cars available in all 50 ...

Volvo diesel for the U.S. by 2010 3 years ago on Autoblog Green

Ford Motor Company's Volvo unit wants to launch a diesel car in the U.S. by the end of the decade. The challenge is meeting the stringent emissions standards, which are focused more on regulating oxides of nitrogen in North America. The European Euro 5 standards, the upcoming standard for European ...


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