I'm a computer programmer, not a mechanical engineer, so I came here to ask a couple of diesel questions. These new fangled electronically controlled diesel engines with a common rail and direct injection... is the pressure in the rail up in the thousands of pounds, or just in the injector nozzle as it injects? Is it a mechanical pump, or electrical? How much power does it take to get that pressure? Couple horsepower? Is there an accumulator or a bypass valve, or does it just pump all the time?Are the injectors electrical? (I assume they are solenoids, right?) Wondering how much power it takes to operate them... volts, amps, watts, etc. How fast do they actuate? 1ms? 10ms? And finally, last question, if you can bang the injectors open and closed with big electromagnets, why not do that with the valves too?
- posted
18 years ago