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You're doing it wrong.
Turbos are on 75% of new cars sold in Europe

You don't have to be a scientist or an automotive engineer to look at the fuel economy that major automakers are squeezing out of their vehicles with normal combustion engines today and wonder if we really need EVs and hybrids. More than one diesel car in Europe is able to provide fuel economy as good or better than the hybrids people generally think are so fuel thrifty.
The catch is that we rarely see diesel engines in the US inside a car, that will be changing, but the diesel car isn't common today for American drivers. One thing that is becoming very common for fuel efficiency sake is the addition of a turbocharger to allow a smaller displacement engine to produce acceptable power to provide the performance drivers expect.
The turbocharger is something that was often thought of for performance cars like the Grand National Buick in the mid to late 1980's. Today the turbo is used in a number of engines including the very popular EcoBoost line from Ford. Ford's EcoBoost engine inside the F-150 truck is selling very well and has a towing capacity on par with normal engines with larger displacement. The turbocharger is even more widely used in Europe where Reuters reports that 75% of all new cars come with one.
Craig Balis from Honeywell Turbo Technologies told Reuters in an interview, "The turbocharger is a green technology in the sense that it's helping cut emissions and raise fuel economy. It's a critical component to get more fuel efficiency out of the engine."
"Emissions regulations in Europe, the United States and worldwide are a driving force for cleaner, greener vehicles and that's a great landscape for turbocharging," said Balis. "We're confident about the continued evolution of combustion engines and the growing role turbocharging has."
Reuters reports that a diesel engine that has a turbocharger can get 40% more mileage than one without a turbo and a gas engine can go 20% further per liter of fuel than one without a turbo. With the impressive economy that normal engines with turbochargers achieve there are many that wonder if we even need EVs and hybrids.
Pierre Gaudillat, policy officer at the Transport and Environment lobby group in Brussels, was asked if we need EVs from a CO2 point of view. He said, "That's a valid question. The answer is: maybe not. Turbos are a no-brainer for cutting CO2 because the efficiency gains are really quite significant. In the near term, we don't really need and can't count on electric vehicles to deliver the CO2 savings. Maybe not until about 2030 or 2050."

Source: Reuters

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RE: Stop spreading misconceptions about Turbos
By Argon18 on 10/23/2011 4:38:18 PM , Rating: 4
none of you understand how fuel economy works in a turbocharged engine. a small turbo engine will use the same fuel as a large normally aspirated only at wide open throttle! at partial throttle, which is where you drive the vast majority of the time (and where you cruise on the highway) the small turbo engine will get small-engine fuel economy. so there is a significant fuel savings.

secondly, this only applies to gasoline engines. your comment of "if you add more air, you have to add more fuel" is not true of diesel engines. while gas engines are stuck working only within a narrow air/fuel mixture window, diesel engines will run on any mixture between 8:1 and 80:1. which is why most diesel engines don't even have a throttle plate - they don't need one. furthermore, diesel engines run cooler when the mixture is super lean (unlike gas engines which run hotter on a lean mixture) so overheating isn't much of an issue.

when it comes to mpg (and torque) diesel engines are king of the road. unfortunately, due to high fuel prices in europe, the domestic oil companies here are making a killing selling all their diesel fuel to europe. they want to keep us on gasoline. that's the reason we don't see more of the awesome euro turbo-diesels here. it's all politics and oil $$$.

By Mint on 10/25/2011 9:29:31 AM , Rating: 2
Widespread diesel use is impossible, and it has nothing to do with politics.

When you refine crude oil, you get different products, including diesel and gasoline. There are a couple of different ways of going about it, but the majority of the world's refineries already choose the method that maximizes diesel output.

If more people start choosing diesel, the price will go up to stop them from doing so ASAP, because we're pretty much out of room to increase our diesel:gasoline ratio.

As for turbos, you're right that a lot of the people above are missing the point. When a car needs 0-50 hp to maintain speed, a 2.0L engine will produce that power more efficiently than a 4.0L engine because there is less friction.

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