Originally Posted by viking kaj
Turbo diesels are definitely not more ecologically friendly since they have very high particulate carbon emissions (soot),
Particulate emissions from diesels are lower now than ever, and getting lower as we speak largely due to better fuel mandated by EPA finally. There are technologies in the pipeline that will make diesel fueled engines comparable to current gasoline engine emissions.http://www.greendieseltechnology.com/factsfantasy.html
This document was written in 1999, and the results are still quite impressive. The technology exists right now, the gas prices to drive its adoption do not.
|Diesels generally require less maintainence, so they are more economical that way.
While this may be true in the light/medium duty truck world, I question whether or not it holds true when comparing modern gasoline engined cars to modern light duty turbodiesels. Speaking of routine maintenance, its roughly similar, and the turbodiesel has far more expensive
components to fail if you should be so unlucky. A Honda Accord powertrain doesn't need any routine maintenance outside of oil until past 100,000 miles.
|A hybrid will not come close to this performance whether on the flats or at altitude, the main advantage with the hybrid is that it switches to electric in stop and go city driving, which is a lot more effecient but it definitely lacks power and torque.
That is flat wrong.
Apparently you haven't yet been in a Accord Hybrid. Faster than the regular V6 Accord, noticeably.
Also, the new Highlander hybrid will be nearly 2.5 seconds quicker to 60mph than the regular 3.3liter gas counterpart.
It is very possible for hybridized gasoline cars to have very high performance. The Prius does not, but this is due to design, not a limitation of the powertrain concept.
|The main reason for the development of the TDI engine in Germany is that diesel is a lot cheaper than regular gas (like 25% cheaper) and the diesels get better mileage. I read somewhere that as a result, something like 30-40% of all passenger cars in Germany are diesels, despite the particulate emission problem. And the German government has been slow to close the tax loophole that keeps diesel cheaper for obvious reasons. Due to the much cheaper gas prices here there has not been as much of an impetus for use of diesel technology.
47.9 percent of newly registered passenger vehicles in Germany are diesel. 51.9 percent of new vehicles in Western Europe.
The limitation of diesel technology is the same as hybrid technology, cost. A turbodiesel costs far
more to build than a similarly capable gas engine.