Fuel supply apparatus of engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Nov 1, 2007
app pub date -
Apr 20, 2007
filing date -
Apr 26, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In a fuel supply apparatus of a returnless type engine provided with fuel supply pipe lines (5, 6) extended from a fuel tank (2) and having an injector (8) in a leading end side, a fuel pump (3) having an electric motor (31) arranged in the fuel supply pipe line, and an electronic control unit (10) in which a fuel supply control program for controlling so as drive the electric motor (31) and the injector (8) is installed, a pressure sensor (11) detecting a fuel pressure so as to output to the electronic control unit (10) is arranged at a predetermined position of the fuel supply pipe line (6) in a downstream side of the fuel pump (3), and the electronic control unit (10) continuously calculates a minimum driving amount of the electric motor (31) necessary for maintaining a target fuel injection pressure on the basis of the fuel pressure value continuously detected by the electronic control unit (10) so as to command, thereby feedback controlling the operation of the fuel pump (3) and maintaining a fuel injection pressure approximately constant.
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