Subject: Single Unit Injection Pumps
From: Rotary Engine
Date: 4/18/2009, 1:06 PM
To: AAA Put this in the To box



Hello All,
Could be that a rotary requires 18,000 events per rotor at 6,000 shaft RPM?
Dan F


One squirt per revolution of the wobble shaft.
The rotors turn at 1/3 the speed of the wobble shaft.
Therefore 6000 injections per minute.

2 pumps, mounted 180 degrees on the front of the engine (i.e. a 13B.)
possibly could service a 2 rotor engine.
(Only a crazy idea on my part at this time)

Picture in original post was of a single cylinder diesel injector pump.
Typically used on small single cylinder 4 stroke diesels, running maybe 4000 RPM.
Hence may only be capable of 2000 injection cycles per minute.

The unknown is if the pump can follow the cam ath 6000 RPM.
I suspect the mechanical time constants (i.e. spring rates)
internal to the pump are too slow.

DeltaHawk and Wilksch are using mechanical pumps on 2 stroke diesels,
but they run under 3000 rpm (3000 injections per minute)

Pipe dreams....   JCP

JCP



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