Among the looming hordes of European animalism automakers planning a North American conciseness-ignition invasion in the next two years, humble Volkswagen has announced its plans to go the Volkswagen Jetta TDI to the diesel dogpile in the summer of 2008. Powered by a just discovered 2.0-liter four-cylinder workmanship 140 hp and 236 lb/ft of torque, and both a 6 speed manual or DSG automated of the hand transmission, the 2008 Jetta TDI wish be cleared for sale in every one of fifty states.
Some of the earlier diesels to answer for it to our shores over the nearest few years will only be to be availed of in 45 states; California, Maine, Massachusetts, York, Vermont have all adopted stricter emissions regulations concerning diesels that bar some vehicles from access. Using technology developed under the BlueTec cooperative formed the agency of Mercedes-Benz and Volkswagen, the Jetta TDI decree slip by these stricter regulations free from resorting to a urea-based cripple treatment, as many BlueTec labeled models leave.
Nitrogen oxides (NOx) are, along by particulate emissions, the biggest hurdles facing diesels in the US. Chiefly BlueTec vehicles will control NOx dint of injecting a urea-based solution called AdBlue into the waste system upstream of a catalytic converter that specifically targets NOx. In that catalytic converter, the alkaline air in the urea reacts with the NOx in the expend gas and neutralizes it into azote and water.
Volkswagen Jetta TDI disposition manage without a urea injection connected view by using a NOx-storage catalyst. parallel the particulate filters in place forward this car as well as other diesels, this catalyst is basically a pitfall that temporarily holds the offensive emissions. at fixed periods, the engine will switch to every air-fuel mixture that will parch off the material in the things.
We had a chance to compel a near-production Volkswagen Jetta TDI and were pleasantly reassured means of the transparency of not just the BlueTec technology feed the car clean, but the diesel machine overall. Horsepower in this new 2.0-liter vulgar-rail diesel engine is up to 40 percent from one side of to the other the previous 1.9-liter four-cylinder, by torque up 33 percent. Those figures despicable an increase in drivability of round 500 percent. With the previous implement, the best performance we managed to cog from a Jetta TDI was a inert 10.3 second 0-60 wheez. The adscititious power and torque produced by this novel, cleaner engine bring that number along the course of to somewhere in the low- to intervening-eight second range. Under less offensive feet, the Jetta TDI's prodigious torque effortlessly whisks the Jetta not present from stops and around traffic.
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