bertram31.com

Hey a quick question on my Cummins 6bta 250hp engines. Cummins has a great site the
cummins quickservice online. my question is with my engines, is it the water jacket after cooled or the sea water after cooled. I think it is the jacketed but not sure. thanks for your help...Russ

Russ Pagels wrote:is it the water jacket after cooled or the sea water after cooled

After cooling is a term usually used in reference to charged air (as in after the turbocharger and/or supercharger)... Cooling the air reduces its volume thereby allowing more air (oxygen) to be pushed into the cylinder... More air means more fuel can be injected...

FWIW, I have never heard of after cooling the water jackets... And cooling the sea water doesn't serve any purpose that I can think off of hand...

Navatech wrote: After cooling is a term usually used in reference to charged air (as in after the turbocharger and/or supercharger)... Cooling the air reduces its volume thereby allowing more air (oxygen) to be pushed into the cylinder... More air means more fuel can be injected...

FWIW, I have never heard of after cooling the water jackets... And cooling the sea water doesn't serve any purpose that I can think off of hand...

Reduces Global Warming...its in Obama's plan...

Carl wrote:Reduces Global Warming...its in Obama's plan...

I don't know about that but I can see where one would colder exhaust water... Having said that, the way to achieve would be by increasing the RW flow... I.e. a pump with more capacity... Adding a cooler would be far more complex... KISS...

Your after cooler is fresh water cooled, 180 deg.good news is no salt corrosion, less than good news is 180 cooling water. Works good last long time. Bill

Thanks Bill.

Russ, your question was as clear as a bell. After cooling done by sea water or fresh water.

thanks for all of your help...Russ

, see if I got this right. Gear oil heats the sea water, sea water cools the fresh water, fresh water cools the compressed air, Fuel mixes with compressed air ,boom, piston goes down, love good rum, don't have any, what was the second law of thermodynamics again?

Newton's Inverse Law Of Thermodynamics

" If you don't do anything...
Nothing will happen!"

If I recall, the 250hp 6bta is the highest hp 6bs that uses a closed circuit fresh water cooled, after cooler. Which IMHO makes that engine highly desirable from a low maintenance standpoint. I had a nice afternoon boat ride in Capt DQs 31 with the 250 6bs, that combination in a 31 is very nice.