Posted on 04/12/2007 9:51:26 AM PDT by Red Badger
GM is applying two new 1.7-liter diesel engines in the new edition Opel Astra. Following Opel’s downsizing strategy, the latest generation common-rail turbo-diesel engines are relatively compact, yet with their high power output per liter and power reserves they boast higher fuel economy and low emissions. These bring the total number of diesels available in the bestselling Astra line to six.
Coupled with six-speed manual transmissions as standard, the new 1.7-liter CDTI ECOTEC unit with 81 kW/110 hp produces 140g of CO2 per kilometer, and the 92 kW/125 hp version 146 g/km. Fuel consumption is an average 5.2/5.4 liters per 100 kilometers (44/45 mpg US).
The engines develop torque of 260 Nm (192 lb-ft) and 280 Nm (207 lb-ft) at 2,300 rpm, respectively.
Both new 1.7 CDTI units in the third-generation Astra feature common-rail direct injection, four-valve technology with swirl control and cooled exhaust gas recirculation with electropneumatic bypass flap control. The cooled EGR system lowers the temperature of the exhaust gas before recirculation further than in a conventional EGR system, thereby achieving an even greater reduction in NOx. (Earlier post.)
However, the constant use of cooled exhaust gas results in the engine taking longer to reach optimal combustion temperatures, possibly resulting in incomplete combustion and an increase in emissions.
The bypass channel can send exhaust gases directly back to the combustion chambers when the engine temperature is low. This helps the engine warm faster, reducing the time for incomplete combustion.
In line with Opel’s downsizing strategy, the compact turbocharged engines have a 79 mm bore and 86 mm stroke, which create a displacement of 1,686 cubic centimeters. The cylinder head is made from light alloy and the engine block from gray cast iron. Its 16 valves are activated directly by two overhead camshafts via flat-base tappets; maximum injection pressure is 1,800 bar. A turbocharger with variable vane technology ensures quick response times.
The diesel engines come with a maintenance-free diesel particulate filter as standard.
Rest In Peace, old friend, your work is finished.......
If you want on or off the DIESEL "KnOcK" LIST just FReepmail me........
This is a fairly HIGH VOLUME ping list on some days......
Ask the EPA and the envirowhackos.
I love torque. I can’t wait till more of these engines are out over here. I loved the last Euro-spec TDI Volkswagen I drove. Very quick (especially in real world traffic), very torquey, almost gas smooth, and very frugal. A perfect engine were it not for US emissions laws.
A lot of folks say that Americans won’t go for diesels but the fact is we haven’t had the kinds they get in Europe. Put some of these modern diesels on the market and within a few years they will take over like they have in Europe. Who can argue with a car like the BMW 330D that does 145mph, 0-60 in under 7 and gets 40+ mpg?
Because they don’t apply gasoline engine emissions regulations to diesels like the U.S. does.
A lot of folks say that Americans won’t go for diesels but the fact is we haven’t had the kinds they get in Europe. Put some of these modern diesels on the market and within a few years they will take over like they have in Europe
You Can say that again!!!
The diesel engines available in Europe were great!!!
When can we get them here?
Exactly what is up with US emission standards?
These Turbo diesels are fantastic engines.
How far off are the emissions?
All I know is they make zero sense.
Tiny Deisels like this get clobbered by the regs, but you can buy a 6+ L Diesel in a Pickup and and lay down a smoke screen that would make a Navy Frigrate jealous.
Our Government is run by idiots.
Bush deserves his low poll numbers from this fiasco alone.
In an era of $3.00 gas, if you can't make the case for 50 mpg Diesel cars (that are still cleaner than cars from 10 years ago), when can you do it?
Diesel:
Sure it sounds like the oil pan’s full of gravel, but at least it stinks, too!
No, seriously, the new diesel technology is way cool, although personally I’m more interested in the new direct-injection gasoline technology.
Why not just shove the engine out of a Kawasaki ZX-14 in there with a bigger clutch....it’s non turbo and 160 RWHP...and still gets 45 mpg.
From what I understand, the replacement for the Saturn
Ion will be based on the Astra. Hopefully they will go
diesel...then all they gotta do is get a diesel hybrid,
and we are talking big time...
ain’t over yet.
I want a 1/2 ton, full size, 4wd pickup truck or SUV that can tow 8000lb’s and get 25mpg.
I love the smell of diesel fumes in the morning
Yeah, but that’s 90-odd HP that is available right at the rpms where you usually drive, not up at 5500 rpm, or higher. Real world HP, not spec-sheet hype. OK, it won’t have the top speed that a higher-HP engine would give, but in most other circumstances it will be more pleasing to drive.
See the smallest box? That's us. Europe is in Euro 4 until 2009 when they go to Euro 5. With aftertreatment T2B5 can be done.
American are reviled because we are allegedly the worst polluters in the world, but we can't get cars like the enlightened Euros drive because they pollute too much. Sounds like a case of "damned if we do and damned if we don't" to me.
hmmmm, the Mitsu Evo power comes on at about 5.
As far as “real world hype”....most ZX-14’s I’ve dyno’d are in the 165 RWHP range.
Yup, that’ll work. Torque comes on at 6500, hp at 9500 rpm.
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