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36LeefH2 wants to clean up pretty much every diesel engine

Imagine if a little bit of water could make your internal combustion engine run cleaner and more efficiently, and help it produce more oxygen than a tree. That's what the LeefH2 device is designed to help your motor do. HNO Green Fuels, the maker of the LeefH2, wants to turn your engine – and every other combustion engine – into an oxygen farm while reducing particulate matter and getting more power out of your fuel.

9Today's semi trucks are a lot cleaner than they used to be

When it comes to diesel trucks, the good old days weren't so good. Go back a quarter-century, for instance. Back then, a single diesel-powered truck was throwing off about 60 times the emissions a typical "clean diesel" truck does today. Cough.

34Here's where green cars are the most popular

Diesel and hybrids both selling well in Texas, California

As we've already learned, 2013 was a pretty big year for diesel and hybrid sales. According to registration data, there are now 7 million diesel passenger vehicles and 2.8 million hybrids on the roads in the US. Diesel registrations grew by 410,040 last year, and hybrids increased by 531,385. From 2010 to 2013, diesel registrations increased by 30 percent, and hybrid sales grew by 64.5 percent. When compared to an overall market growth of just 3.7 percent, those numbers are remarkable. Diesel Te

26UN says diesel trucks might not be worst emission offenders

Airborne particulate matter can really do a number on us humans, particularly with regard to our cardiovascular systems. It seems reasonable for air pollution, then, to be a major concern when calculating the environmental and health costs of the way we do business. Diesel-powered transport has come under particularly scrutiny and particulate matter from diesel exhaust has been widely blamed for diseases such as lung cancer in humans. Perhaps, though, commercial diesel has gotten too tough of a

13EPA's $9M clean diesel campaign could pay back $117M in health benefits

Diesel fumes are bad for people. But diesel power is good for a lot of heavy-duty work. So, for now, one answer to threading the needle of that little conundrum is to make diesel engines as clean as possible. To that end, the US Environmental Protection Agency (EPA) has announced $9 million worth of grant funds from the DERA National Funding Assistance Program. If the EPA's numbers are correct, that money could be worth something like $117 million in public health benefits.

75Modern diesels pollute over 20% less than those from 10 years ago

Today, if you're a car company and you offer a diesel engine in this market, you have to go to great lengths to show consumers that it's less harmful to the environment than a gas-powered engine. That's why marketing types have come up with TDI Clean Diesel and EcoDiesel and BlueTec and so on, rather than just plain old "diesel." How much cleaner are today's oil burners, though?

53VW says it has sold over 100,000 TDI diesels in America this year

Volkswagen Group of America has lit oil-burning fireworks to celebrate the sales of more than 100,000 TDI Clean Diesel vehicles in the US between its VW and Audi brands this year. According to VW, that means it is responsible for more than 75 percent of diesel-engined cars and SUVs sold here – perhaps not surprising when the two brands offer a total of 12 diesel models.

24Luxury SUVs, non-luxury cars best targets for going green, not so with trucks

Luxury SUV and non-luxury car shoppers are the most inclined to consider alternative fuel vehicles. Not surprisingly, consumers looking for trucks are the least likely, according to a 2013 study from Phoenix Marketing International (PMI). Fuel-efficient "clean diesel" luxury SUVs from German automakers are warming up luxury SUV shoppers to alt-fuel powertrains like electric, hybrid, hydrogen or natural gas – but those options haven't been enough yet for truck shoppers.

231Audi claims America unfairly pushes electrics over diesels, backed by survey

Audi, in case you haven't noticed, is quite committed to diesel technology. It champions oil burners in both the racing world and to consumers, offering American customers a total of five diesel-powered models, which is more than any brand in the US market save for its parent company, Volkswagen. In a bid to prove that diesels aren't some passing trend and are actually gaining momentum in the US, Audi commissioned Harris Interactive to conduct a poll of 1,600 American drivers, to see how they fe

115New VW Golf TDI BlueMotion is 'most fuel-efficient ever' with 73.5 mpg

Volkswagen claims its newly launched Golf TDI BlueMotion is about as good as it gets with that old standby, the internal combustion engine. The new Golf consumes 3.2 liters of diesel per 100 kilometers, the equivalent of getting 73.5 US miles per gallon (on the European cycle), a 15-percent improvement in fuel economy over the previous model.

26VW Passat TDI Clean Diesel en route to new Lower 48 mpg record

Here's the thing: it takes a lot of practice to drive like a true hypermiler. The 2013 VW Passat TDI Clean Diesel with a manual transmission, for example, has an EPA estimated 31 city/43 highway mile per gallon rating. Hypermiler Wayne Gerdes thinks the car is good for at least 68 mpg.

36Diesel group, biodiesel producers come together in fight against natural gas

The fight to be the most popular fuel for commercial trucks wages on between the natural gas and clean diesel factions, with alt-player biodiesel joining forces with the Diesel Technology Forum team. The National Biodiesel Board joined up with the forum to improve diesel's reputation in Washington, and beyond, at a time when natural gas is gaining support.

50German automakers renew push for clean-diesel sales in US

Germany's largest automakers are renewing their pitch for their clean-diesel vehicles in the US as a way for consumers to combat high gas prices without having to resort to the (often) even pricier hybrid and plug-in hybrid options.

1TRANSLOGIC's Guide To The LA Auto Show 2012

Automakers rolled out the red carpet for Hollywood debuts of their latest concepts and new models at the 2012 Los Angeles Auto Show. This year we noticed that a bit of the tech you'd expect from CES seemed to be invading the space--much like automakers are invading CES. There was a connected car consortium display on the ground floor, along with the futuristic Design Challenge and all around news about upcoming technologies for 2013 and beyond.

22Diesel-powered Mazda6 going racing in Grand-Am Series

The diesel version of the 2014 Mazda6 won't be hitting North American showrooms until the middle of next year, but we won't have to wait that long to see the car in action. Mazda will enter its midsize sedan in the new Grand-Am GX class with a Skyactiv-D clean diesel engine under the hood, and the car will make its racing debut at the Rolex 24 at Daytona on January 26. This will be the first time in the race's 60-year history that a diesel-powered car has competed in the 24-hour race.

22Volvo starts production of V60 diesel plug-in hybrid, first anywhere [w/video]

Volvo Car Corporation claims that its V60 Plug-in Hybrid is the world's very first diesel plug-in hybrid. That might be the case – there's a limited number of Peugot 3008 Hybrid 4s in Europe and Hino Trucks launched its Class 5 work truck for the US market earlier this year – but both of these vehicles are diesel hybrids, not plug-in hybrids. So, Volvo has is telling the truth here, at least in terms of what global automakers are producing. And it's that production that's most import

AddHonda unveils new diesel for overseas Civic... will it come here?

Honda has indeed been promoting its new Earth Dreams family of fuel efficient engines, and with good reason. The next generation of the Japanese automaker's powerplants are said to deliver more power with less consumption. You can't go wrong there.

35High-mpg Taylors drive a Volkswagen Passat 1,626 miles on one tank of fuel

Watch out, Wayne Gerdes, there's a new hypermiling crew in town.

43U.S. diesel auto sales up 27% in 2011 while hybrid share shrinks

A plethora of new diesel offerings is driving sales, according to a new report from the Diesel Technology Forum. Sales of diesels rose 27.4 percent in 2011, according to numbers from HybridCars.com and market researchers Baum and Associates.

100U.S. diesel auto sales up 27% in 2011 while hybrid share shrinks

A plethora of new diesel offerings is driving sales, according to a new report from the Diesel Technology Forum. Sales of diesels rose 27.4 percent in 2011, according to numbers from HybridCars.com and market researchers Baum and Associates.

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