Dodge Cummins Diesel Forum banner

1 - 2 of 2 Posts

·
Registered
Joined
·
100 Posts
Discussion Starter #1
How does the cp3 pump work? Just curious and like to know these kinds of things. What makes it operate and how?
 

·
Registered
Joined
·
495 Posts
The CP3 is driven by a gear off the front of the crankshaft, and then uses electronic solenoids to regulate the amount of fuel pressure delivered to the rail. In the past Cummins engines with the VE, P7100, and VP44 pumps they were called "smart" pumps. They controlled the timing and the amount of fuel delivered to each injector. The CP3 pump is a "dumb" pump. It simply pushes out as much fuel as it is told to and at what pressure it's told to. Then the timing and duration of the injectors is controlled by the ECU sending an electrical signal to each injector.

http://www.cumminsforum.com/forum/3rd-gen-powertrain/341988-beginner-informational-video-cr-must-see.html

Those videos contain a pretty good overview of how the whole injection system works.
 
1 - 2 of 2 Posts
Top