Comments on: VW reveals Passat EcoFuel sedan concept

By: jaypetter

jaypetter — Wed, 03 Dec 2008 22:26:11 +0000

ok, hello to everybody! Im from argentina, i study mechanical engeneering, and i wanted to say that natural gas is used here in my country since the early 90’s.

its not very efficient but its cheap (in the short term). many cars can be easyly converted so as to use a mixture of Ngas and gasoline. but the problem comes along in the long term, Ngas generates much more temperature when its burnt, and its also much drier so it doesnt lubricate the inside of the cylinders as well as gasoline. as a concequence you end up with an engine that is always running with a very high temperature. So it needs lots of maintenance. Not to mention the heavy tanks at the back that will consume storage space, and remember also that weight spoils everything.

It does not improve performance, engines tend to be less responsive, and they loose lots of torques…

here, Ngas is used in taxis, and people that have a low budget. and if the people from VW want to learn more about it, they should come to Argentina where there is a long experience regarding Ngas.

By: cjblair

cjblair — Wed, 03 Dec 2008 18:57:16 +0000

“Thanks new engine management control system…”
Insert “to the” after thanks, perhaps?

And 130mpg is an efficient top speed, but how fast is it?

Sheesh.

By: A4

A4 — Wed, 03 Dec 2008 18:49:14 +0000

apparently, pelzauto, lln is getting hot flashes about fuel economy

By: Borat

Borat — Wed, 03 Dec 2008 18:42:17 +0000

I think there was BMW 7 series model running on gas and gasoline. I think it is over-engineering: they have small diesel for this car already and it is all over Europe. I failed to see single gasoline powered Passat in any of old countries.

By: pelzauto

pelzauto — Wed, 03 Dec 2008 18:24:57 +0000

“… on its way to a top speed of 130 mpg…”

Maybe m p hour?

By: Lariat Luxury Locomotive Liner No.3

Lariat Luxury Locomotive Liner No.3 — Wed, 03 Dec 2008 18:21:44 +0000

Until it is past the “concept” phase I simply don’t care.

By: johnnycanuck

johnnycanuck — Wed, 03 Dec 2008 18:20:11 +0000

Sounds like a mechanical nightmare of Freddy Krueger proportions. In this instance, I’d wait for the sequel.