Steve's comment about avoiding melting the coil is very well taken. Having melted a few injectors trying to rig up a flow test bench I can heartily agree.
There are quite a few IC's specifically designed to drive solenoids in general, and injectors in specific. The National LM1849 (I think) is one, although, I've never been able to buy a few (min order Q was 10K pieces). Allegro would be a good mfr to look at, though.
In general, you want a waveform that has a big spike of current at the beginning, and a much lower plateau at the end. There are some resistor capacitor circuits that also can work.
The problem is similar to driving a stepper motor at high speeds.. you want a lot of voltage to get the current changing quickly, then drop back to just maintain that current.
If you aren't trying to get the smallest, cheapest, scheme, and you have some form of programmable waveform generator, you can iterate until you find a suitable drive waveform.
Even a pulse generator driving a transistor can be made to work.
Created on Friday, February 23, 2001 1:50 PM EDT by James Lux