Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: treedoc on November 16, 2011, 08:09:30

Title: Maximum Fuel Flow
Post by: treedoc on November 16, 2011, 08:09:30

Does anybody know the maximum flow of a 280SL fuel injection pump at say 6000 revs?

Alternatively the maximum volume output per reverlution of either the six plungers combined  or per individual plunger?

We are trying to calculate the power required to drive an injection pump

We are not interested in the maximum flow of the electric priming pump

Thaks in anticipation

Title: Re: Maximum Fuel Flow
Post by: Naj ✝︎ on November 16, 2011, 12:47:27

Hi, Doc,

How's your German?

Hope these will help...

Naj

Title: Re: Maximum Fuel Flow
Post by: 114015 on November 17, 2011, 17:13:46

Yes, Naj, :D

You have asked me (via P/N) for a translation. :o

Here it is. :-*

Dear Geoff and Naj,

The requested info is on the first and/or second page in line

B) Vollastmengen (full load amounts)
    1500 rpm (pump!):   47.0 - 49.0 ccm per 1000 strokes (for each of the 6 pump elements separately)
    2500 rpm (pump):    52.5 - 54.5 ccm per 1000 strokes (for each of the 6 pump elements separately)
    3250 rpm (pump):    46.0 - 49.0 ccm per 1000 strokes (for each of the 6 pump elements separately)

Please consider: 1500 rpm of the pump cam is equivalent to 3000 rpm of the engine's crankshaft.
ccm means cubic centimeter which is equivalent to one milliliter (mL).
That means each squirt of each of the pump elements will deliver between 46 - 54 microliter (µL).

That number  correlates pretty well with a fuel consumption of 26 liters per 100 km at max speed (200 kmh/124 mph) under full throttle. :P :'(
The number of 26 litres is from the car's fuel consumption diagram in the MB table book.
26 L/100 km is equivalent to 9.04 mpg (US gallon) or 10.85 mpg (UK gallon) :o :o

http://jumk.de/calc/verbrauch.shtml

Achim

Title: Re: Maximum Fuel Flow
Post by: Naj ✝︎ on November 18, 2011, 08:27:30

Thank you, Achim.

Naj

Title: Re: Maximum Fuel Flow
Post by: treedoc on November 19, 2011, 23:42:05

For those who's German is as bad as mine see attached.