Fuel injection control system for internal combustion engine with asynchronous fuel injection for fuel supply resumption following temporary fuel cut-off

Patent · Tue Sep 22 04:00:00 EDT 1987

OSTI ID:5908493

Mori, Y

This patent describes a fuel injection control system for an internal combustion engine comprising: a first sensor producing a first sensor signal representative of the angular position of the crank shaft; a second sensor producing a second sensor signal representative of preselected engine operating parameters; a third sensor detecting whether engine operating conditions satisfy a predetermined fuel cut-off condition and if so, producing a third sensor signal; fourth means for deriving a fuel injection amount on the basis of a value of the second sensor signal and producing a fuel injection control signal having a value indicative of the derived fuel injection amount; fifth means for disabling the fourth means in the presence of the third sensor signal and for resumption operation of the fourth means after the third sensor signal ends, sixth means for deriving fuel injection timing and producing an injection timing control signal, wherein the first sensor signal includes a first pulse train representative of predetermined angular positions of the crank shaft and a second pulse train representative of predetermined units of rotation of the crank shaft. The sixth means counts the pulses of the first and second pulse trains, produces the injection timing signal when the first pulses and second pulses reach given values and presets the first and second counter values to the first and second value in response to the third sensor signal.

• Assignee: Nissan Motor Co., Limited, Yokohama
• Patent Number(s): US 4694807
• OSTI ID: 5908493
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AUTOMATION
CONTROL SYSTEMS
COUNTING TECHNIQUES
DESIGN
ENGINES
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUEL-AIR RATIO
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MEASURING INSTRUMENTS
METERS
OPERATION
PULSE TECHNIQUES
PULSES
SHAFTS
SIGNALS
SYNCHRONIZATION
TIMING PROPERTIES