Fuel metering control system for internal combustion engine
December 29, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDouble air-fuel ratio sensor system in internal combustion engine Fuel supply control arrangement for an internal combustion engine System and method for controlling fuel injection quantity for internal combustion engine Wall flow learning method and device for fuel supply control system of internal combustion engine Method of and an apparatus for controlling the air-fuel ratio of an internal combustion engine Fuel metering control system in internal combustion engine Process for determining fuel quantity Fuel metering control system and cylinder air flow estimation method in internal combustion engine A/F ratio estimator for multicylinder internal combustion engine 5548514 InventorsAssigneeApplicationNo. 580685 filed on 12/29/1995US Classes:701/104, Controlling fuel quantity60/274, Anti-pollution60/276, Having means analyzing composition of exhaust gas123/480, Having microprocessor123/492, Acceleration or full load condition responsive123/673, With sensor controlling each cylinder individually701/101, Internal-combustion engine701/103, Control of air/fuel ratio or fuel injection701/105Controlling timingExaminersPrimary: Louis-Jacques, Jacques H.Attorney, Agent or FirmForeign Patent References
International ClassesG06G 007/70F02M 051/00 Foreign Application Priority Data1994-12-30 JPAbstractA fuel metering control system for an internal combustion engine having a plurality of cylinders. The system includes an air/fuel ratio sensor and engine operating condition detecting means for detecting engine operating conditions at least including engine speed and engine load. The basic quantity of fuel injection is determined by retrieving mapped data according to the engine speed and engine load. An adaptive controller is provided to calculate a first feedback correction coefficient to correct the quantity of basic fuel injection such that the detected air/fuel ratio is brought to a desired value, and second feedback loop is provided for calculating feedback correction coefficients to correct the quantity of fuel injection. The desired air/fuel ratio is corrected by a second air/fuel ratio installed downstream of a catalytic converter.Other References
Field of SearchWith sensor controlling each cylinder individuallyWith modifying or updating memory (i.e., learning) Acceleration or deceleration responsive Combined with engine condition responsive means Combined with ambient condition responsive means (e.g., pressure) Idling responsive Speed responsive Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve) Having microprocessor Acceleration or full load condition responsive Output fed to compensating circuit Anti-pollution Having sensor or indicator of malfunction, unsafeness, or disarray of treater (e.g., fusible link, etc.) Having means analyzing composition of exhaust gas Engine fuel, air, or ignition controlled by sensor of reactor condition MOTOR AND ENGINE TESTING With continuous operation Intake air flow Internal-combustion engine Control of air/fuel ratio or fuel injection Controlling fuel quantity Controlling timing Digital or programmed data processor | |
