MICHAEL F PANE
Vehicle Board in Lake Ariel, PA
License number
Pennsylvania MV130169L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Lake Ariel, PA 18436
Professional information
Internally Regulated Self Priming Fuel Pump Assembly
US Patent:
5573381, Nov 12, 1996
Filed:
Jun 20, 1995
Appl. No.:
8/492505
Inventors:
Michael F. Pane - Lake Ariel PA
James J. Grinsteiner - Union IL
Martin R. Zielke - Lockport IL
James J. Grinsteiner - Union IL
Martin R. Zielke - Lockport IL
Assignee:
Navistar International Transportation Corp. - Chicago IL
International Classification:
F04B 4900
US Classification:
417284
Abstract:
A dual-piston fuel pump assembly includes a housing having an inlet to a primary chamber and an outlet from a pumping chamber. Between the primary and pumping chambers are interposed concentric inner and outer pistons. Each piston is independently spring biased toward the pumping chamber. The inner piston is mechanically driven by an engine associated reciprocating drive and pumping action occurs as a result of the spring operating on the inner piston. The position of the outer piston relative to the inner piston is determined by the pressure in the pumping chamber as regulated by the force of the spring operating against the outer piston. When pressure in the pumping chamber exceeds predefined limits, the outer piston opens regulator ports disposed on the inner piston to recirculate fuel back into the low pressure primary chamber. Additionally, the outer piston acts as an accumulator to dampen pressure spikes.