|
|
Correct on all points Ed. Except that I changed the injector drivers
to a higher current version about 6 years ago. This was after a couple of
"peak & hold injectors connected as saturated" incidents. Now the
injector gives up first. But I think it still takes a long time to kill an
injector this way.
Tracy
Subject: [FlyRotary] Re: injector life and reliability
Bernie,
Your injectors should be fine, the drivers won't
hurt the injectors -
however, the injectors can hurt the drivers.
Because a saturation driver is
expecting more resistance (less current
requirement) from a saturated type
injector of around 12-16 ohms. If
you stick a Peak and Hold (around 2.5
ohms) in a circuit designed for
saturation injectors, they (Peak and hold)
will draw considerably
more current and may exceed the design limit of the
saturation
injector driver thereby damaging it. On the other hand, if the
designer
"over-designed" the driver it may cause no damage at all.
If you put a
saturation injectors in a circuit designed for Peak and Hold,
you will not
damage the drivers because the saturation injector will never
exceed the
current draw the P&H circuit was designed for - but, you may not
get
very good injection especially at the lower rpms.
So if anything could
have been damaged - it would have been the EC2, but
Tracy has done a good
job of providing a bit of margin there as well. I
don't doubt you had
a bad injectors ( I have had several - they are just
getting old), but I
doubt it was caused by the lack of resistors.
Tracy, of course, will
correct any incorrect reference to his design work
{:>)
Ed
A
|
|