Hi Andy, What types of diesel injectors are you working with? Direct injection? I'm a fan diesel direct injection. There are potential uses for piezoelectric injectors other than just pushing oil. I am looking for a similar injector to deposit solder paste onto circuit boards.
Mydata has a MY500 solder paste printer but it about $200k USD more than I want to spend in the next year or so on a printer. It looks to be a nice machine. I may see if I can get a replacement head for a MY500 if I can. At the 37 second mark they show a cutaway of the Mydata My500 solder paste print head: http://www.youtube.com/watch?v=cC41j-LJZm4 My thought was to get a fairly low volume diesel direct injector (i.e. 1L to 2L 4-cyl diesel car) and grind away the lower section of the nozzle which has the 6 or 8 pinholes to allow solder paste to exit a bit more freely. I don't want a spray pattern but just a micro dot deposited below the injector. I think the velocity and volume can be altered a bit by changing the wave shape applied to the injector. I also don't need 30k PSI as this may make the paste do weird things like go through the PC board. From what I've read the piezo stack takes about 100V to fire but piezo ceramics are static in nature so applying a DC potential of 100V will hold the stack at its extended position and shorting it to ground will constrict the stack. In the US Ford etc. diesel trucks are plentiful but I don't feel like spending $600 on a truck sized injector + a core charge. So, if anyone has a new/used injector lying around they don't have plans for I may be interested in experimenting with one. It should be a direct injector but please correct me if a mechanical injector would work as well. Some tuning shops match injector flow rates but I'm not sure what happens to the ones with plugged pinholes or with flow rates just lower than needed. For an experiment it would not matter to me. You may say I'm all wet thinking about direct injection for a solder paste printer and that would be ok. Thanks, Dennis > -------Original Message------- > From: andy pugh <bodge...@gmail.com> > To: dengv...@charter.net, Enhanced Machine Controller (EMC) > <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] OT - Ford diesels > Sent: Aug 04 '12 12:24 > > The same things have made Diesels a lot faster. 100hp / litre is > pretty common in production engines. I remember when that was a race > motorcycle tune. > The engine I am working on is the low-power version of the 2.0 at > 180hp and 420Nm (320 ft.lb) > > -- > atp ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
