Insight on a Cummins N14
10-07-2010, 08:53 PM
#31
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2010 is pushing less egr than previous years, and by a lot. with the bluetec gear. less regens. better economy because of fewer regens. and less EGR issues with moving much lower volumes of egr.
Yay epa 2010
Yay epa 2010
10-08-2010, 01:22 PM
#34
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Our 2010 engines are having EGR cooler failure quicker than the older models. (less mileage)
10-09-2010, 12:25 AM
#37
Administrator ........ DTR's puttin fires out and workin on big trucks admin
35psi is about right. That's what the regulator is typically set to.
More oil pressure isn't a good thing if you don't need it. Think about it-- if you can lube the engine successfully at 20psi, what's the advantage of 40psi?
Where does the work to make that oil pressure come from? How about from the fuel your are burning?
Lower psi= better mpg.
More oil pressure isn't a good thing if you don't need it. Think about it-- if you can lube the engine successfully at 20psi, what's the advantage of 40psi?
Where does the work to make that oil pressure come from? How about from the fuel your are burning?
Lower psi= better mpg.
Actually the reason Cummins lowered engine operating oil pressure was not due to fuel economy but rather excessive oil temps from higher oil pressures, any other benefit was secondary at the time.
10-13-2010, 09:02 PM
#41
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Since I work in Cummins Heavy Duty Engineering, I'm sticking to my guns on this one.
The effect of oil pressure on temps is minimal compared to other drivers of oil temp.
When I depressurize a fuel system from sky-high injection pressure to ambient, the temp flashes up about 100 deg C.
How much temp comes from higher oil pressure? You have to spend a lot of money to even measure it.
It's all about lowering parasitics (and hence, increasing mpg).
06-22-2016, 08:41 PM
#43
Administrator ........ DTR's puttin fires out and workin on big trucks admin
06-22-2016, 08:43 PM
#44
Administrator ........ DTR's puttin fires out and workin on big trucks admin
Since I work in Cummins Heavy Duty Engineering, I'm sticking to my guns on this one.
The effect of oil pressure on temps is minimal compared to other drivers of oil temp.
When I depressurize a fuel system from sky-high injection pressure to ambient, the temp flashes up about 100 deg C.
How much temp comes from higher oil pressure? You have to spend a lot of money to even measure it.
It's all about lowering parasitics (and hence, increasing mpg).
The effect of oil pressure on temps is minimal compared to other drivers of oil temp.
When I depressurize a fuel system from sky-high injection pressure to ambient, the temp flashes up about 100 deg C.
How much temp comes from higher oil pressure? You have to spend a lot of money to even measure it.
It's all about lowering parasitics (and hence, increasing mpg).
This would have an affect on an HEUI system. Explain how it affects the HPCR.
09-18-2016, 09:55 PM
#45
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