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William Learman Phones & Addresses

  • 1052 Valley Dr, Caro, MI 48723 (989) 673-6777
  • Harbor Beach, MI
  • Cass City, MI

Work

Position: Production Occupations

Education

Degree: Associate degree or higher

Publications

Us Patents

Engine Demand Fuel Delivery System

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US Patent:
57407835, Apr 21, 1998
Filed:
Nov 15, 1996
Appl. No.:
8/749448
Inventors:
William L. Learman - Caro MI
Ronald H. Roche - Cass City MI
Matthew L. Werner - Caro MI
Assignee:
Walbro Corporation - Cass City MI
International Classification:
F02M 3704
US Classification:
123497
Abstract:
A fuel delivery system and method for providing fuel to a fuel injected engine using an engine control unit (ECU) to determine engine fuel demand and adjust fuel pump operation accordingly to supply at least as much fuel as demanded by the engine. The ECU determines a fuel pump control signal based upon fuel demand and applies the signal to a fuel pump driver that controllably drives the pump in response to the control signal. The ECU determines fuel demand by monitoring engine operation and calculates a control signal that controls the duration of time the fuel injector stays open during an upcoming intake stroke of engine operation. The pump control signal is proportional to engine fuel demand multiplied by a constant that ensures more fuel will be available for delivery to the injector than demanded by the engine. Engine fuel demand is proportional to the duration of time the injector will stay open multiplied by the engine speed. Preferably, if the calculated pump signal is less than a minimum that would cause the pump to operate below a desired minimum duty cycle, the control signal is set at the minimum to ensure sufficient excess fuel will be available to meet any sharp increases in demand.
William L Learman from Caro, MI, age ~65 Get Report