Fuel control apparatus for internal combustion engine

Patent · Tue Nov 17 04:00:00 EST 1987

OSTI ID:5850627

Kasanami, M; Tamura, H

An apparatus for use with an internal combustion engine is described including a throttle valve situated in an induction passage connected through an intake manifold to cylinders, comprising: means for controlling the amount of fuel supplied to the engine at a position upstream of the intake manifold; sensor means sensitive to a condition of the engine for producing a sensor signal indicative of the engine condition; a control circuit responsive to the sensor signal for determining a value corresponding to a setting of the means for controlling the amount of fuel to the engine. The control circuit includes means for determining a first value corresponding to the amount o fuel supplied to the engine based upon engine load and speed, means responsive to a demand for engine acceleration for determining a second value corresponding to the amount of supplemental fuel supplied to the engine, means for measuring a first time period during which the throttle valve remains at angles greater than a predetermined value, means for measuring a second time period after the throttle valve closes to the predetermined angle until a demand for engine acceleration occurs again, means for decreasing the second value when the first time period (T1) is greater than a predetermined value (T1) and the second time period is less than a predetermined value, and means for summing the first and second values to calculate the value corresponding to a setting of the means for controlling the amount of fuel to the engine; and means for converting the calculated value into a setting of the means for controlling the amount of fuel to the engine.

• Assignee: Nissan Motor Co., Limited
• Patent Number(s): US 4706632
• OSTI ID: 5850627
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AUTOMATION
CONTROL EQUIPMENT
DESIGN
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUEL-AIR RATIO
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
SIGNALS
VALVES