Gas 2.0

Lack of warranty support for biodiesel has been a major stumbling block for new diesel owners who want to start using the fuel. But three long-awaited ASTM specifications could help change that.

Automakers and engine manufacturers have been requesting a finished blend specification for B20 biodiesel blends for several years, with some citing the need for that spec as the single greatest hurdle preventing their full-scale acceptance of B20 use in their diesel vehicles.

On June 19th, after more than five years of research and discussion, the American Society for Testing and Materials (ASTM) finally approved the following specifications for biodiesel fuel:

• Changes to the existing B100 biodiesel blend stock specification (ASTM D6751)
• Finished specifications to include up to 5% biodiesel (B5) in the conventional petrodiesel specification (ASTM D975)
• A new specification for blends of between 6 percent biodiesel (B6) to 20 percent biodiesel (B20) for on and off road diesel.

If that’s gibberish to you, here’s the take home message: the new specification for B6-B20 biodiesel blends could prompt more automakers to fully support B20 in their new cars and trucks. Read the rest of this entry »

2009 Jetta TDI Clean Diesel Sedan

VW announced the pricing of the 2009 Jetta and SportWagen yesterday, along with a new fuel economy certification from the third-party certifier AMCI. It seems that VW wasn’t particularly impressed with the EPA’s 29 mpg city / 40 mpg hwy estimation, and wanted a second opinion.

There has been some general confusion circulating about fuel economy estimates for the new Jetta (which will be available in August) ever since VW’s Director of Powertrain Development announced the car could get up to 60 mpg. Read the rest of this entry »

Tiguan HyMotion Fuel Cell Concept Car

Last Thursday I had the opportunity to attend a VW press event showing off the new hydrogen fuel cell powered Tiguan. The vehicle (above) is one of only two concept prototypes in the world, and this one was flown in from Germany for its US debut.

The event was originally intended to be a test-drive of the HyMotion Tiguan, but the vehicle was having “electrical problems” that kept it out for display only. A VW spokesperson assured us that it had nothing to do with the fuel cell, but whatever the problem was they didn’t want it to happen to us in mid-day San Francisco traffic. Read the rest of this entry »

New diesels will get better mileage and have cleaner emissions than your average car. Pictured above: 2009 Jetta SportWagen 2L TDI Clean Diesel.

Later this year (see the timeline below), we will finally begin to see an influx of new model diesels in the United States. While diesels make up 50% of the market share of vehicles in Europe, they’re still trying to shrug off the stigma of being dirty, noisy beasts here in the US. So what changed? Read the rest of this entry »

Diesel Hybrid Electric Golf Doesn’t Make it out of the Showroom

It looks like VW won’t be sending a diesel hybrid to the US after all. VW announced the 70 MPG diesel-hybrid electric Golf at the Geneva Motor Show, but turned around in the March 27 edition of Auto, Motor und Sport to say they wouldn’t be building the car because it would be “too expensive.” Read the rest of this entry »

VW’s Jetta BlueTDI: 60 MPG, 90% Emissions Reduction for NOx

VW’s ultra-low emission 2009 Jetta will be coming to the US mid-summer, according to an announcement made late last month at the Vienna Motor Symposium.

This newer version of the Jetta will meet the strictest emissions standards in the world—BIN5/LEV2—which are enforced by 5 US states: California, Massachusetts, Maine, New York, and Vermont. BIN5/LEV2 standards severely cap nitrogen oxide (NOx) emissions (0.05 g/mile), one of the two tailpipe pollutants that have given diesels a bad rap (that and particulate matter). Read the rest of this entry »

It looks like Solazyme will be making algal biodiesel for the US military, after a test-drive demonstrated the fuel’s superior cold-weather properties when compared to commercially-available biodiesel.

Former Director of Central Intelligence and Under-Secretary of the Navy R. James Woolsey tested the fuel himself by driving to the Worldwide Energy Conference & Trade Show in an unmodified 2008 Ford F450 fueled by 100% algal biodiesel. Read the rest of this entry »

I’ve posted in the past about a possible hybrid LeMans car and performance diesels, but today there is some actual news on some non-gasoline race cars from Audi. As reported by AutoBlogGreen, Audi recently took second place in their first showing with the diesel-powered cars in the European LeMans (this is after having raced these cars since 2006 outside of Europe).

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Mercedes plans to release a diesel-hybrid SUV capable of 40 miles per gallon, with cleaner emissions than your standard car. Demo’d at the 2008 Geneva Auto show, the SUV is built on Mercedes’ relatively new BlueTec emissions control technology—a combination of catalytic converters and advanced chemical processing that scrubs out the worst pollutants produced by the diesel engine.

The 4-cylinder, 214 horsepower engine will also break the world’s record for lowest carbon emissions (157 g/km) in an SUV.

The new Vision GLK BlueTec hybrid sports a standard hybrid-electric system: An electric motor seamlessly supplements the 2.2 liter diesel engine during fuel-intensive acceleration. Regenerative braking repowers the lithium-ion batteries, and start-stop technology shuts the motor off when the car is at a dead stop.

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[UPDATE 9/15/09]: Volkswagen’s Diesel-Hybrid L1 Concept Gets 170 MPG, Available by 2013

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This is what a team of engineers can do when challenged to push the limits of fuel efficiency and technology. You may have already heard of VW’s 1-liter car, but take a closer look. It’s a sports-economy concept car produced a few years ago by VW engineers, to answer one big question: could they build a car that consumes less than 3 liters of fuel for every 100 km traveled?

It turns out they could, but they didn’t stop there. Instead, VW blew by that goal to create a car that uses only 1 liter of fuel for every 100 km. That’s 285 MPG.

Read the rest of this entry »

We all know that fast cars are fun and fuel-sipping cars are environmentally responsible, but is there a middle ground?

Short of expensive electric sports cars like the Tesla Roadster, there may be a solution to be found in diesel. Not only can diesel cars be fueled with waste vegetable oil, biodiesel, or some mixture of these fuels, but diesel engines produce a lot of torque and get better fuel economy than their gasoline-powered brethren.

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Update: VW announced this car will not be built because it was deemed “too expensive.” Sorry Folks, VW Diesel Electric Hybrid Not Coming to US.

Toyota may lose its high-mileage stranglehold on the U.S. auto industry, thanks to Volkswagen’s new Golf hybrid-electric diesel. At 69.9 MPG, the new model is a serious contender for high-mileage biodiesel usage with a ridiculously low-emissions profile, especially since it will meet the strictest emissions standards in the world: Europe’s Euro V and America’s Tier II Bin 5.

This makes it likely to be released in California, since the major impediment to U.S. diesel vehicle sales has been emissions technology. But VW doesn’t plan on releasing the vehicle in until Europe late next year, which means we’d optimistically see a U.S. version sometime in 2010.

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The German company Loremo (short for low-resistance mobile) released a turbodiesel sportscar at last September´s Frankfurt International Auto Show capable of a whopping 117 mpg and range of no less than 621 miles. They also plan on hybrid and electric models, and even one that runs on vegetable oil.

High-mileage-sportscar may sound like an oxymoron, and it’s a fair question to ask what was sacrificed to get 117 MPG out of this sleek, sporty-looking turbo-diesel, which is available in two models: a 2-cylinder LS and a 3-cylinder GT.

Besides the cool-looking flip-up lid and snazzy interior, Loremo’s real innovation (if the name was any hint) is based on two fuel economy fundamentals: substantially reducing weight and drag.

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Thinking about ‘converting’ to biodiesel?
It’s not as hard as you think.

This series of posts is intended for readers looking to start using biodiesel by finding an older diesel vehicle, ‘converting it’, and then finding a local fuel source.

Before embarking on a biodiesel adventure, it may be a good idea to determine whether biodiesel is available in your area (it probably is), and most importantly, whether or not it’s conveniently located. While some of us are willing to go to great lengths to find and use alternatives to petroleum-based fuels, this isn’t practical for everyone.

For information on how to find biodiesel, see 6 Ways To Find And Use Biodiesel Anywhere, and for more background you may want to get started with the Biodiesel Mythbuster. This post is primarily focused on buying a used diesel, but it should be helpful to anyone interested in using biodiesel.

Finding Your First Biodiesel Car (or Truck)

It’s important to understand that any diesel engine can run on any blend of biodiesel with no major conversion. In older vehicles, it’s not a bad idea to change out fuel lines (biodiesel eats rubber over time), but don’t let anyone convince you that this is difficult or expensive (more on this later). First, let’s find your first biodiesel vehicle:

Step 1: Determine Your Needs

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If you haven’ heard of the Motorhead Messiah, Jonathan Goodwin, let me introduce you: he hacks cars for a living, and he can get 60 mpg out of an H3 Hummer while doubling the horsepower and cutting emissions in half. Unbelievable? Yes, but this is no joke, and it’s doesn’t defy the laws of physics either. The hacked H3 is a hybrid with the gasoline fuel system removed. In its place, Goodwin installed a biodiesel-burning jet turbine to recharge the electrical system:

Goodwin leads me over to a red 2005 H3 Hummer that’s up on jacks, its mechanicals removed. He aims to use the turbine to turn the Hummer into a tricked-out electric hybrid. Like most hybrids, it’ll have two engines, including an electric motor. But in this case, the second will be the turbine, Goodwin’s secret ingredient. Whenever the truck’s juice runs low, the turbine will roar into action for a few seconds, powering a generator with such gusto that it’ll recharge a set of “supercapacitor” batteries in seconds.This means the H3’s electric motor will be able to perform awesome feats of acceleration and power over and over again, like a Prius on steroids. What’s more, the turbine will burn biodiesel, a renewable fuel with much lower emissions than normal diesel; a hydrogen-injection system will then cut those low emissions in half. And when it’s time to fill the tank, he’ll be able to just pull up to the back of a diner and dump in its excess french-fry grease–as he does with his many other Hummers. Oh, yeah, he adds, the horsepower will double–from 300 to 600.

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