Green Options

Diesel engines hold a lot of promise, especially the ones in use over in Europe. They make more torque than their petrol cousins, usually come equipped with turbochargers, and tend to emit fewer emissions in low-sulfur form.

Researchers at a lab in Munich, Germany, have built a turbocharged diesel engine that they hope will emit less than 5 milligrams of soot and 80 milligrams of nitrogen per kilometer without resorting to a catalytic converter. Lofty goals, but they are making good headway.

This year’s LA Auto Show is buzzing with real-life and concept hybrid and all-electric cars. But in the clean diesel corner, the crickets were chirping. Will Americans ever be ready for clean diesels?

This post originally appeared on the Popular Mechanics website. You can access the original post here. Written by David Kiley.

German automakers Volkswagen, Audi, BMW and Mercedes-Benz are selling their newest “clean” diesel vehicles nationally, including in California—home of the 2009 Los Angeles Auto Show—a state that, historically, with its air pollution regulations, has been hostile to diesel cars.

But even the auto companies with umlauts on their computer keyboards are making plug-in electrics and hybrids a major part of their U.S. future. The Germans keep plugging away to make their case for diesel to Americans. At the same time, BMW showed a hybrid, and Audi showed its fully electric e-Tron Concept at the LA show.

America needs more diesels. They get great fuel mileage and tend to require less work than traditional petrol engines… plus they sound freakin’ sweet when coupled with turbochargers. And they make gobs and gobs of torque. I love torque.

I also love the MINI. These spy photos show a MINI mule being tested with a diesel engine, and BMW has been saying for some time that they are considering a diesel MINI for the U.S. market. Even better, there might be a twin turbo version with over 200 horsepower. Super. Freakin’. Sweet.

Not everyone wants to save the planet. This is a sad, but true fact. Yet everyone who lives and works within a capitalist economy loves saving money. So it’s good for the planet that, in many cases, saving money and green initiatives go hand in hand by providing an increased economic benefit while lessening environmental impact. Many of these benefits come directly from the government, such as tax exemption status or tax credits for using alternative fuels in vehicles.

And as the German biofuel industry is showing us, taking away those economic benefits can lead to the utter collapse of what looked like a maturing faucet of biofuel.

Scientists from Sandia National Labs have successfully field-tested a machine that uses solar energy to convert CO₂ waste from power plants into fuels such as gasoline, diesel, and jet fuel.

Cylindrical in shape, the device has both a hot and cold chamber with 14 Frisbee-like rings in the middle. The rings’ outer edges–made of iron oxide–are solar heated to 2,700 degrees which forces the composite to lose oxygen atoms.

As the rings rotate (one revolution a minute), they move in towards the cool chamber. There, carbon dioxide is added and the iron oxide composite takes back its missing oxygen atoms. The resulting carbon monoxide would be used in creating a synthesized liquid combustible fuel.

In what could be a major breakthrough, Joule Biotechnologies announced that it has directly produced fuel from the plentiful carbon dioxide in the air around us using highly engineered photosynthetic microbes.

As part of a National Science Foundation grant program to examine cutting edge ways to make nature work for us, a team of scientists at Iowa State University have been awarded $2 million to unravel how some plants and algae can make hydrocarbons and discover if the genes that govern that process might be isolated.

“These plants are capturing solar energy and creating something that’s chemically identical to petroleum,” said Jackie Shanks, Iowa State’s Manley R. Hoppe Professor of Chemical Engineering, in a statement.

Just about this time last year I reported on the very promising and innovative Mcgyan® biodiesel process. It was one of the most popular stories gas 2.0 ran that year, and rightly so: the breakthrough seemed to deliver the possibility of making biodiesel in mere seconds from start to finish, reducing costs by half the price of other biodiesel, producing no waste, using no chemical reactants, and using any animal fat or vegetable oil as a feedstock.

At the time the company in charge of the project, Ever Cat fuels, had only succeeded at making a small-scale pilot operation of 50,000 gallons per year. But, as of 2 days ago, the process has been completely commercialized.

I’ve been happy with all the recent efforts by European auto manufacturers to bring fuel-efficient diesels back to the States. From Volkswagen to Mercedes, diesels seem to be the new attempt at pleasing the US “green” crowd with classy, low-emissions fuel-sippers.

Reading that last sentence over, it seems funny to call them a “new attempt” because these high mileage diesels have been available to Europeans for a LONG time — but that’s another story.

So, while it’s debatable whether a gasoline-powered Prius at 40 mpg is more “green” than a diesel-powered Jetta at 40 mpg — it all has to do with how much of each type of fuel comes out of one barrel of oil — It’s a fact that having these new clean diesels as an option is certainly something the US has been lacking for a long time. And I appreciate having that option, I really do.

This one may offend you more sensitive types as “ironic” or not green at all. But the fact is, the world needs bulldozers. Lots of them. But until now, anyone seeking a hybrid bulldozer was out of luck. But Caterpillar, the prolific maker of construction equipment has announced that for 2010 they will be selling the D7E, a diesel-electric bulldozer.

This is actually old news that recently resurfaced, and as a lifelong Cougar aficionado I can’t pass it up. In actuality, the Mercury Cougar was a refined, “gentleman’s muscle car” based on the 1st generation Mustang. It came standard with a number of gas-guzzling V8 motors including the epic “Boss” 302.

But the pristine-looking 1967 Cougar pictured here has done away with those gas hogs in favor of a Mercedes turbodiesel motor that runs on, you guessed it, biodiesel.