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Class Information
Number: 123/673
Name: Internal-combustion engines > Charge forming device (e.g., pollution control) > Including exhaust gas condition responsive means > With sensor controlling each cylinder individually
Description: Subject matter wherein a transducer is located in the flow path of the products of combustion which is sensitive to a particular component of the products of combustion, the engine has a plurality of cylinders or combustion chambers and the charge forming device responds to signals from the transducer to modify the ratio of fuel and oxidant supplied individually to the cylinders or combustion chambers. (i.e., the mixture ratio supplied to each cylinder or combustion chamber may be different)










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8670917 Air-fuel-ratio imbalance determination apparatus for internal combustion engine Mar. 11, 2014
8645046 Controller for internal combustion engine Feb. 4, 2014
8635993 Air-fuel ratio control device of internal combustion engine Jan. 28, 2014
8620564 Abnormality detection apparatus and abnormality detection method for multi-cylinder internal combustion engine Dec. 31, 2013
8573189 Method for operating an internal combustion engine, computer program product, computer program, and control and/or regulation device for an internal combustion engine Nov. 5, 2013
8573184 Control apparatus for controlling intake air flow, fuel injection amount, and ignition timing at each cylinder of a multi-cylinder engine Nov. 5, 2013
8566006 Method for controlling combustion in a multi-cylinder engine, and multi-cylinder engine Oct. 22, 2013
8555863 Control device for internal combustion engine Oct. 15, 2013
8554447 Internal combustion engine system controller Oct. 8, 2013
8554450 Control apparatus and control method for internal combustion engine Oct. 8, 2013
8538659 Method and apparatus for operating an engine using an equivalence ratio compensation factor Sep. 17, 2013
8510017 Cylinder-to-cylinder air/fuel ratio imbalance determination system of internal combustion engine Aug. 13, 2013
8483900 Hybrid vehicle Jul. 9, 2013
8447497 Apparatus for determining an air-fuel ratio imbalance among cylinders of an internal combustion engine May. 21, 2013
8442747 Cylinder air mass prediction systems for stop-start and hybrid electric vehicles May. 14, 2013
8302581 Air-fuel ratio imbalance among cylinders determining apparatus of a multi-cylinder internal combustion engine Nov. 6, 2012
8297041 Exhaust gas purification apparatus for internal combustion engine Oct. 30, 2012
8261727 Individual cylinder fuel control systems and methods for oxygen sensor degradation Sep. 11, 2012
8234030 Vehicle and control method of vehicle Jul. 31, 2012
8180554 Method and devices to reduce the difference between normalized air-fuel ratio of the various cylinders in an internal combustion engine and a predetermined value May. 15, 2012
8170774 Method and devices for the control of the air-fuel ratio of an internal combustion engine May. 1, 2012
8141540 Method for operating an internal combustion engine Mar. 27, 2012
8116931 Fast fuel adjustment system diagnostic systems and methods Feb. 14, 2012
8103393 Aircraft exhaust gas temperature monitor Jan. 24, 2012
8103430 Method and device for the diagnosis of the cylinder-selective uneven distribution of a fuel-air mixture fed to the cylinders of an internal combustion engine Jan. 24, 2012
8036812 Method for controlling an internal combustion engine Oct. 11, 2011
7905214 Method for ascertaining the gas work performed by the cylinder pressure on the piston of a cylinder and the internal mean pressure Mar. 15, 2011
7813863 Method for operating an internal combustion engine Oct. 12, 2010
7792630 Control system and method for internal combustion engine and engine control unit Sep. 7, 2010
7765995 Fuel injection device and fuel injection system Aug. 3, 2010
7721711 Engine control system including means for learning characteristics of individual fuel injectors May. 25, 2010
7681565 Air/fuel ratio control system for internal combustion engine Mar. 23, 2010
7654248 Cylinder torque balancing for internal combustion engines Feb. 2, 2010
7628146 Device and method for correcting the injection behavior of an injector Dec. 8, 2009
7603994 Abnormality diagnosis device and control system for internal combustion engine Oct. 20, 2009
7597091 Air-fuel ratio control apparatus and method for an internal combustion engine Oct. 6, 2009
7562653 Method for detecting a cylinder-specific air/fuel ratio in an internal combustion engine Jul. 21, 2009
7520265 Fuel injection controller Apr. 21, 2009
7519467 Cylinder air-fuel ratio controller for internal combustion engine Apr. 14, 2009
7500470 Cylinder torque balancing for internal combustion engines Mar. 10, 2009
7497210 Air-fuel ratio detection apparatus of internal combustion engine Mar. 3, 2009
7483782 Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine by means of an adaptive nonlinear filter Jan. 27, 2009
7469693 Advanced engine management of individual cylinders for control of exhaust species Dec. 30, 2008
7455048 Method for operating an internal combustion engine, and a control device therefor Nov. 25, 2008
7441554 Engine controller Oct. 28, 2008
7431016 System for controlling evaporative emissions Oct. 7, 2008
7409284 Apparatus for estimating air-fuel ratios and apparatus for controlling air-fuel ratios of individual cylinders in internal combustion engine Aug. 5, 2008
7398772 Control apparatus for multi-cylinder internal combustion engine and control method Jul. 15, 2008
7392789 Method for synchronizing cylinders in terms of quantities of fuel injected in an internal combustion engine Jul. 1, 2008
7387116 Piston engine and respective operating method Jun. 17, 2008

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