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[oldestof11]

Frontier with a 2.8L Cummins

New Duramax for the GM mid size twins

Both showcased at the Chicago Auto Show.

 

[haven]

Engineers from Hyundai and Delphi have developed a gasoline engine that runs without spark plugs. It 's like a Diesel engine that runs on gasoline. To make compression ignition work, the fuel is pre-warmed using exhaust gases, then injected using accurately timed pulses. Because the engine employs relatively low 14.8-to-1 compression, the engine components don't have to be as strong as a traditional diesel (read: lighter and less expensive). Exhaust emissions can be controlled by existing technologies from conventional gasoline engines.

Let's see: Diesel-like torque and fuel economy in a lighter package that does't require special fuel (no ULSD) or expensive exhaust treatment (no DEF). Sounds like a winner to me.

http://www.caranddriver.com/feature...l-gas-engine-runs-without-spark-plugs-feature

 

[Redline]

Let's see: Diesel-like torque and fuel economy in a lighter package that does't require special fuel (no ULSD) or expensive exhaust treatment (no DEF). Sounds like a winner to me.

This!

 

[haven]

http://www.expeditionportal.com/forum/threads/125495-chiptune-dpf-delete-problems

Interesting discussion going on in this thread about how overseas travelers have experienced problems, and found solutions, to the issue of DPF emissions control equipment failing to operate properly at high elevations (say, above 7000 ft).

 

[Redline]

http://www.expeditionportal.com/forum/threads/125495-chiptune-dpf-delete-problems

Interesting discussion going on in this thread about how overseas travelers have experienced problems, and found solutions, to the problem of DPF emissions control equipment failing to operate properly at high elevations (say, above 7000 ft).

I find it interesting (a bit sad too) that Diesel-powered rigs, which were once the most versatile, universal vehicles for commercial work and/or world travel, are now nearly the opposite with the latest, varied, and inconsistent emissions systems and fuels around the world.

As a multi-decade diesel enthusiast, gasoline-powered rigs continue to look very attractive.

 

[haven]

Diesel engines are going through a transition similar to the one gasoline engines had in the 1970s, when emissions control was a new challenge. Each year, the diesel engines get better at meeting the new rules.

New USA rules for gasoline emissions controls -- called Tier 3 -- are scheduled to start in 2017. At that time, a new formulation of gasoline with lower sulfur content will be required. See http://www.epa.gov/otaq/tier3.htm Gasoline in Japan and Europe meets this standard already. It's not clear to me if the 2017 gas engines will suffer if they use unleaded gas with higher sulfur content, which will continue to be sold in most other parts of the world.

 

[Regcabguy]

Yeah,I'm hoping diesel emissions are in their infancy.
Also glad I ordered a 5.9 with minimal emission controls.

 

[jdinevens]

Yeah,I'm hoping diesel emissions are in their infancy.
Also glad I ordered a 5.9 with minimal emission controls.

Another reason I went with the 7.3......

 

[Redline]

Diesel engines are going through a transition similar to the one gasoline engines had in the 1970s, when emissions control was a new challenge. Each year, the diesel engines get better at meeting the new rules.

New USA rules for gasoline emissions controls -- called Tier 3 -- are scheduled to start in 2017. At that time, a new formulation of gasoline with lower sulfur content will be required. See http://www.epa.gov/otaq/tier3.htm Gasoline in Japan and Europe meets this standard already. It's not clear to me if the 2017 gas engines will suffer if they use unleaded gas with higher sulfur content, which will continue to be sold in most other parts of the world.

Yes, some diesel emissions controls are newer… Cat Converters and ERG have been around a while, it seems the particulate traps and urea injection (the newer additions) are the bigger, current challenges.

Good points about future gasoline-powered rigs... all the more reason to buy/build a good one now and keep it.

Yeah,I'm hoping diesel emissions are in their infancy.
Also glad I ordered a 5.9 with minimal emission controls.

x2. I owned two 5.9s and what a great engine.

Another reason I went with the 7.3......

x2 again. Still have mine, but the truck is getting a little long-in-the-tooth and just 'old' compared to my newer rigs, but the drivetrain is ready for decades more use if I want! Old, simple tech (and loud) compared to the new stuff. Sadly one can’t get a manual trans anymore except behind the Cummins.

 

[haven]

Ram 1500 Ecodiesel pushed to 38 mpg

Wayne Gerdes and colleagues at CleanMPG.com have driven a stock Ram 1500 Ecodiesel 1000 miles on a single tank of fuel. That's a little better than 38 mpg. The team drove from Texas to Indiana.

http://green.autoblog.com/2014/05/09/hypermiling-ram-1500-ecodiesel-38-mpg/

The article linked above has details of the techniques they used. Apart from trying to trick the truck's 8 speed transmission into remaining in high gear as long as possible, the top tip was to hold speed a little below the posted limit on any given road.

The team drove a stock pickup, carrying four people, their luggage, and a competition-winning mpg vehicle in the truck bed. Photos accompanying the article show that the competition vehicle was too long to fit in the bed, so they drove with the tailgate down. This may have helped increase mpg, too.

 

[SSF556]

Wayne Gerdes and colleagues at CleanMPG.com have driven a stock Ram 1500 Ecodiesel 1000 miles on a single tank of fuel. That's a little better than 38 mpg. The team drove from Texas to Indiana.

http://green.autoblog.com/2014/05/09/hypermiling-ram-1500-ecodiesel-38-mpg/

The article linked above has details of the techniques they used. Apart from trying to trick the truck's 8 speed transmission into remaining in high gear as long as possible, the top tip was to hold speed a little below the posted limit on any given road.

The team drove a stock pickup, carrying four people, their luggage, and a competition-winning mpg vehicle in the truck bed. Photos accompanying the article show that the competition vehicle was too long to fit in the bed, so they drove with the tailgate down. This may have helped increase mpg, too.

It was also a 4x4....


Sent from my iPad using Tapatalk HD

 

[haven]

Does biodiesel affect vehicle performance? That's the question Edmunds.com tried to answer. They drove a VW Passat diesel over the same LA to Las Vegas 450 mile loop, once using conventional petroleum diesel, and again using a mixture of that had roughly 5% biodiesel. Most driving was on the freeway, but the test included some simulated city driving as well.

Results: no performance difference, and biodiesel marginally cheaper. The test recorded 40 mpg using conventional diesel, almost 44 mpg running 5% biodiesel. The author attributes this to stronger headwinds during one run.

http://www.edmunds.com/volkswagen/p...sel-2-vs-b5-biodiesel-comparison-results.html

I'm not sure why they didn't test using 20% biodiesel. That's the blend you find more often at a service station.

 

[Jr_Explorer]

The author attributes this to stronger headwinds during one run.

http://www.edmunds.com/volkswagen/p...sel-2-vs-b5-biodiesel-comparison-results.html

I'm not sure why they didn't test using 20% biodiesel. That's the blend you find more often at a service station.

This type of "reporting" just frustrates me! Yes... Why didn't they use B20 since that would help widen the differences (if any) and provide more definitive results. Secondly... They should have had TWO identical vehicle and made two separate simultaneous runs so the winds and weather would be identical. The second run would be to switch which vehicle ran the B20 and which ran the straight diesel.

But instead they wasted print (or 1's and 0's!) with zero valid results.

 

[haven]

The EPA just published their MPG ratings for the BMW X3 SUV. Powered by a 2.0L four cylinder turbodiesel, 8 speed automatic trans and AWD, the BMW X3 xDrive28d is rated at 27 city, 34 highway, 30 mpg combined. This makes the X3 the most fuel efficient compact SUV with AWD.

The EPA numbers for the Mercedes GLK250 are marginally lower than the X3, perhaps the result of "only" a 7 speed automatic.

The Subaru XV Crosstrek (2.0L gasoline engine, CVT, AWD) is rated to deliver 29 mpg city, 33 highway, 31 mpg combined. But it's a smaller and lighter vehicle, not really in the same class as the X3 and GLK250. Only half the cost of the German SUVs, too.

 

[craig333]

Be careful with the biodiesel numbers. Propel here in town at first had 5% biodiesel but read the fine print. It was "up to 5%" biodiesel. Same thing when they changed to 20% biodiesel. Now its 5% to 20%. You can't ever be sure exactly what your're getting.