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1. (WO1999009318) IMPROVED FUEL PUMP CONTROL VALVE ASSEMBLY

Pub. No.:    WO/1999/009318    International Application No.:    PCT/US1998/017032
Publication Date: Fri Feb 26 00:59:59 CET 1999 International Filing Date: Tue Aug 18 01:59:59 CEST 1998
IPC: F02M 59/36
F02M 59/46
F02M 63/00
F04B 53/10
Applicants: DIESEL TECHNOLOGY COMPANY
Inventors: STRAUB, Robert, D.
FAUPEL, Werner
Title: IMPROVED FUEL PUMP CONTROL VALVE ASSEMBLY
Abstract:
A fuel pump (10) for a vehicular diesel fuel pump member having a control valve assembly which includes a housing having a control valve chamber (20), and an actuatable control valve (34) disposed in the control valve chamber. The control valve includes a piston valve body axially movable between first and second positions. A valve stop (44) is disposed in the housing adjacent the control valve chamber, and a piston valve body seat (90) contacts the valve stop whenever the piston valve body is in the second position. A first control valve spring (70) biases the piston valve body toward an unactuated position and a second spring biases the piston valve body into damped engagement with the valve stop.