Measuring and testing – Internal combustion engine or related engine system or... – Compression
Patent
1994-03-02
1996-02-27
Chilcot, Richard
Measuring and testing
Internal combustion engine or related engine system or...
Compression
123479, G01M 1500
Patent
active
054939020
ABSTRACT:
The present invention is directed to an on-board diagnostic system for detecting a defective fuel line pressure regulator in an internal combustion engine during engine operation. Pressure sensor means are provided for sensing fuel pressure in the fuel supply line and for generating corresponding pressure signals. Signal processing means receive and process the pressure signals from the pressure sensor means. An output signal is generated by the signal processing means in the event pressure signals are determined to indicate a malfunctioning pressure regulator. Such output signal can be stored, used to alert an engine operator to an impaired regulator and/or provided to a fuel injector control means for adjusting the duration of injector actuation to better achieve a desired fuel flow quantity per individual actuation.
REFERENCES:
patent: 4145932 (1979-03-01), Pagel
patent: 4261209 (1981-04-01), Hatsuno et al.
patent: 4494511 (1985-01-01), Ito et al.
patent: 4503820 (1985-03-01), Nakagawa
patent: 4756291 (1988-07-01), Cummins et al.
Chui Granger K.
Glidewell John M.
Yang Woong-Chul
Abolins Peter
Chilcot Richard
Ford Motor Company
May Roger L.
McCall Eric S.
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