I think I’ve seen one but I never got a good photo of it.
THat looks like a SD75M or SD70MAC is a newer EMD for sure
The same loco was in town just today, but I was busy and had forgot my camera! ![]()
!Semper hyperbolica! Catastrophe!
He’s actually right on this. Remember that unlike FGR, EGR requires substantial cooling of what can become considerable mass flow of ‘spent exhaust’, and that at high duty cycle that exhaust gas may peak ‘pre-turbo’ at very high temperature through the first part of the necessarily short EGR tracting.
Meanwhile the engine oil has to be kept relatively cool at all times if it is to have extended service life. There is no faster way to degrade and coke suitable lubricant than to expose it to ~1100F heat flux, so to get any reasonable packaging size in your EGR cooler you will need a fairly high-volume bypass pump (probably combined with the bypass-filtration system) and a high heat-transfer area in the cooler structure.
Engine oil is predominantly a hydrocarbon, and as is well documented if it leaks through turbocharger seals or into scavenge air it will happily burn, overspeed the engine, or blow out volatilized or on fire. Remember that the EGR passages go to the intake manifold, so that when the EGR cooler leaks, the bypass oil will be admixed at elevated temperature and thence introduced to the cylinders with charge air. There is no circumstance in which that will end well.
The 6.0L PowerCerebrovascularAccident engine had an opposite quirk: it put the EGR cooler (coolant-to-gas) in a dedicated coolant line which then went – at elevated temperature – to the HPOP oil cooler for the injectors. When that failed (due in part to actual bubbles in the water flow) you’d get contaminants in the now-coking injector oil (already compromised with soot fines by being drawn from the engine sump) and there would go another $800 worth of injectors.
He removed the hyperbole. Thanks,Harold.
Is that Dickinson ND by chance?
Bingo!
Hard to consider a place of 25000+ a city. Small town. But you even have a small college so opportunity.
Hard to consider a place of 25000+ a city.
Legally speaking, it is a city. I wouldn’t call it a small town (look to its neighbors, like Belfield, Taylor, and Richardton, to to mention the almost comically tiny New Hradec), but it isn’t a city by my view either. And the college has repeatedly tried to commit suicide in various ways.
Maybe by ND standards it’s a big town #7 in that state
ND isn’t exactly populous…
The college has repeatedly tried to suicide? Overaggressive chem majors?
No, I mean that they have had some idiotic policies. In short, the college is a bit pretentious (and has earned itself the nickname “Harvard-on-the-Hill”), and through this has managed to destroy their only really successful course, Nursing.
Well my NDA is finally expired from when I was running a prototype engine way back in 99-00 for Detroit Diesel. This should give you an idea of what reality was in the logistics industry prior to the EPA losing their minds in the late 90s.
Detroit Diesel was testing a 14 liter common rail injection high pressure prototype engine for OTR engines scheduled for release in the 04 model year. They were literally going to retire the 60 series of engines and replace it with this model. It was 500 pounds lighter than the C15/16 Caterpillar models and ISX from Cummins. Horsepower was a maximum 665hp and 2250 torque. It was a standard inline 6 single turbocharger air to air intercooler equipped diesel engine.
It met or exceeded the proposed emissions standards that were in place prior to the EPA regulations being changed and timelines being gutted in half. Here’s were it hurts to this day in order to do the required testing requirements Detroit required that the 12 trucks using these engines be ungoverened capable of running 75mph and maintaining that speed. Even running 75mph through a 10 hour shift these engines in a 98 Century Freightliner were averaging 8mpg with an average weight of 79k pounds running between 16 to 17k miles a month. A normal truck in the same company was getting 6 with 155 less horsepower running 10mph slower. If we got assigned a run up the Pacific coast which restricted us to basically 55mph the fuel economy jumped to 14 mpg and the mpg at 65 was 11mpg. These measurements were taken off miles run against gallons added and we were only allowed to fill the tanks to the scribed point on the neck of the tanks to maintain accuracy.
So the EPA killed an engine that would have saved this nation trillions in logistics costs over the years and reduced emissions just on reduced fuel being used by more than all of their regulations. The engine even as a prototype was 40 percent cleaner than the 00 Detroit 60 series. But the EPA stated that it wouldn’t certify any engine not already in production in memos sent to the makers. So the biggest revolution in diesel engines was forced to the scrapyard before it ever got a chance. The current design of Detroits use nothing off this design as the EPA ordered all design drawings and prototypes destroyed.
You have to love government beaucraticts that refuse to look at what their ordering destroyed.
Maybe they would better serve the public as a community college? You already have several other state universities and colleges. But I know what you mean by pretentious. Wisconsin has at least two (Manitowoc and Sheboygan) small institutions that are really two year schools but like to call themselves UW. Illinois has WIU that is shrinking into oblivion.
ND has always had too many colleges to begin with. Some goofballs when developing the state decided that it was going to be a proper Urban and Cultured State and thus provided it with far too many colleges.
The nephew of my neighbor when I was a kid, Chester Fritz, donated the funds for UND’s library and auditorium.
Neat!
By ND standards 25,000 is a major metropolis. It was about 10,000 when I was growing up there. The oil boom added a lot of people.
