Joseph Worthington

US Patent:

20120073545, Mar 29, 2012

Filed:

Sep 23, 2011

Appl. No.:

13/243518

Inventors:

Joseph A. WORTHINGTON - Greenwood IN, US
Norman C. BLIZARD - Columbus IN, US
David P. GENTER - Columbus IN, US
Gregory S. FRANKS - Edinburgh IN, US
Michael F. MATTERN - Columbus IN, US
Thomas O. HAHN - Columbus IN, US
James L. WALLS - Cookeville TN, US
Edward N. LINEN - Columbus IN, US

International Classification:

F02M 37/08

US Classification:

123497

Abstract:

A fuel supply system and method of controlling fuel flow through a supply system is provided including a variable flow, i.e. speed, electric fuel transfer pump and a control system adapted to variably control the transfer pump based on fuel demand of the engine. The system provides improved transient response by providing the transfer pump with a feed forward speed/flow command based on engine fueling demand determined based on engine operating conditions. The transfer pump is controlled based on fuel demand not necessarily achieved yet by the high pressure pump and injectors. Therefore, this system controls the EFTP substantially simultaneously with controlling the high pressure pump and injectors to optimize fuel flow through the entire system ensuring the minimum required fuel flow is passing through the second the fuel filtration system, hence maximizing steady state fuel filtration efficiency, and minimizing surge effects on filtration efficiency.