I keep myself pretty up to date on technology, and keep things in mind that seem to be problem solvers, well I think I might be on to something, as we know we have sensitive to heat injection pumps that cost well over a thousand dollars. This doesn't include down time, ordering time, availability, or the humility of having to buy gasoline for the loaner ya get stuck with while your truck gets fixed. What I am opening to discussion is called thermo electric cooling, Peltier untis. They have been around for a while and their workings are simple. You put power to them and one side of the flat unit gets cold, the other gets hot. They have been used succesfully on computer chip cooling in teh overclocking world and are used in your mini fridge/ cooler that plugs into cig lighter for power. Top the hot side goes a heat sink and a fan usually, but if a large enough heat sinc is used the fan is not as needed. The power consumption is 12 volt friendly, no transformers or inverters needed, and the higher the voltage, closer to 14 volts, the colder they get. A simple relay would be all is needed to have this come on when the truck is running. Applying this to the flat side of the injection pump could be done with some thermally conductive paste, as ids done with pc chips. Of course the cold side would be against the pump. so lets hear it, why won't it work, why will it work, who want to try it in a hot and nasty environment..... O and another thing that is great is that they are not in short supply and are not expensive, here is a link to an ebay auction that has one cheap, and about the right wattage to make a difference, there are many others out there of different wattage, higher and lower.

http://cgi.ebay.com/Gigantic-62mm-35...QQcmdZViewItem

so come on, lets talk about it for the life of our injection pump.

 

Everything I've read about the injection pump failure modes are NOT heat related; it's cleanliness and lubrication or lack thereof in the fuel used.

Yes, I an very aware of peltier devices. They have some VERY interesting and portable applications.

I think you would need significantly more than 350W to cool the injection pump. I'm assuming that the pump will use 3-5hp. 767W/hp gives 2300-3800W

This opens up a whole range of questions: How cool do you want the pump to run? What is Bosch's spec temperature for pump operation? If it's too cold, would more damage occur inside the pump due to lack of thermal expansion? Doesn't diesel fuel burn better when the air is cold and the fuel warm to hot?

I'm not saying this isn't the right thing to do...just trying to unserstand all the implications.

Tony

 

Cp3 injection pump is not affected by heat. The only electronic component is the FCA and it is a relatively simple valve. However the previous fuel injection pump VP44 in the cummins with the built in electronic was and still is heat sensitive. This is the reason those pumps don't tolerate SVO that is pre-heated to properly burn. So I have read

 

Even if the CP3 was effected by heat I don't know how effective that Peltier would be in that hot engine bay. I have used them in the past for overclocking my computer in my college days (-10°C on your CPU can be fun until you crack the core!). You would need something capable of 1) Removing the heat generated (watercooled?), 2) standing up to the vibration and abuse of the underhood environment (face it, the Cummins shakes, rattles, and rolls) and 3) Even if you could overcome the first two, you would need a good way to attach it to a flat surface on the CP3 that would sink the heat away.

Interesting idea, but I don't think it'll work or even effect anything.