[DML] Re: Fuel Injector Pressure vs Fuel Consumption

["content22207" <brobertson@xxxxxxxxxxxx>]

All 6 *ARE* connected to the same point -- there's only 1 fuel
metering piston.

Hoses appear to be evolution from the original fuel injection manifold
(for example Volvo's 1975 B27E, never imported into US in lieu of it's
own inline 6). That unit stood high above the engine like a 6 legged
stool, with hoses dropping from a central point down to each intake
port. Makes sense for that design. I have a picture one one of my
computers that I'll upload to #5939's photo album.

Later B27/B28 fuel injection manifold is indeed difficult to work
with. I suspect that's one reason Renault opted for thin 1/8" steel
lines versus Volvo's fat flouroelastometric ones (note that inside
those fat hoses are thin 1/8" hard plastic lines -- all that rubber is
for protection only).

B280/3.0 jetisoned the later design altogether for a low profile unit
with injectors (EFI) in the manifold, not heads. Combined with a
relocated ignition distributor, makes for *MUCH* easier maintenance
and repair.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, doctorDHD@xxxx wrote:
> 
>  
>  
> In my continuing efforts to measure fuel consumption for the "D" I 
installed 
> an electronic pressure sensor connected to one of the injectors.  
I'm not 
> sure I am getting the information I need.  I have based my idea on 
some 
> assumptions.
>  
> 1) I thought that the pressure in the injector line would be a way to  
> estimate fuel consumption based on the idea that the more the
pressure in the  line 
> the more fuel would be sprayed out.
>  
> 2) Each injector should have the same pressure so I should have to
monitor  
> only one.  (But if that is true why didn't they just have one
chamber or  
> perhaps 2 fuel rails, with all 6 injectors essentially connected to
the same  
> point?)
>  
> Any comments or ideas?
>  
> See you at the Fall Tour with the DeLorean Driving Computer....
>  
> 
> 
> 
> Dave  & 6530
> 
> 
> 
> 
> "Just Say  NO, to the COUCH POTATO!"®
> 
> 
> 
> [Non-text portions of this message have been removed]








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