Internal-combustion engines – Engine speed regulator – Having condition responsive means with engine being part of...
Patent
1981-09-24
1983-12-27
Argenbright, Tony M.
Internal-combustion engines
Engine speed regulator
Having condition responsive means with engine being part of...
123375, 123390, 123458, 180179, F02D 3300, F02M 3704
Patent
active
044224206
ABSTRACT:
Method and apparatus are disclosed for controlling fuel flow from a fuel source to the fuel rail of a fuel injected, internal combustion engine. Two fuel flow paths are connected in parallel between the source and the fuel rail, an on-off solenoid valve being provided in each of the fuel flow paths. The two solenoid valves have dissimilar fuel flow capacities. A microcomputer generates a pulse width modulated signal for application to a selected one of the two solenoid valves so as to control fuel flow through the associated fuel flow path. The microcomputer decides to which solenoid valve to apply the pulse width modulated signal and the duty cycle of the pulse width modulated signal in accordance with the value of a master variable. The master variable is adjusted in accordance with the difference between vehicle or engine speed and an associated limit, thereby providing vehicle or engine speed governing. The system is also operable in cruise control and variable engine speed governing modes.
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"Vehicle Speed Limiting" by Hewitt (Product Brochure).
Cromas Joseph C.
McQuillan Charles M.
Argenbright Tony M.
TRW Inc.
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