Looking for an EFI system for a V8 engine.

[Evert Rosseel]

Hi !

We are currently looking for an EFI system for a V8 engine.
The engine is a Chevy big block, converted for operation on natural 
gas and/or hydrogen and currently works with a gas carburettor on an 
engine test stand (fully equipped with instrumentation).

The EFI system should have the following specifications :
- is to be used for timed, multipoint port injection
- fully sequential injection : each cylinder must have a seperate 
injection period, at the same location in the cycle (for example : 
during the inlet stroke).(This is necessary with hydrogen because of 
problems with preignition and backfire and also because up to 20% of 
the air is displaced by the hydrogen what would lead to differences 
in power between cylinders if the injection is not fully sequential)
- the injectors need to be driven at 24V (although it may be possible 
to take a 12V signal and convert it to 24V)
- operation without lambda sensor (we specifically don't want to run 
at the same richness all the time and any EFI system that works 
in a closed loop would make this impossible without complicating the 
system)
- preferably programmable via PC, if possible even during running 
(for our experiments it would be very awkward to have to stop the 
engine every time we want to change a parameter)

We need a system that is capable of starting the engine reliably and 
running it at all speeds and at all throttle settings. Once this is 
possible fine tuning of the equivalence ratio can be done 
by changing the gas supply pressure for instance.
We assume the biggest problem will be to get the engine idling.

Can anybody point me out where I can find such a system ?

Thanks in advance,

Dr. ir. Evert Rosseel



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*    Dr. ir. Evert Rosseel                                             *
*    Laboratory for Machines                                   *
*    Department of Mechanical and Thermal Engineering          *
*    University Gent                                           *
*    Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium            *
*    Tel : ++32 9 264.33.06                                    *
*    Fax : ++32 9 264.35.86                                    *
*    Email : Evert.Rosseel at rug.ac.be                           *
*    WWW : http://allserv.rug.ac.be/~erosseel/motoren.htm      *
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