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Class Information
Number: 123/672
Name: Internal-combustion engines > Charge forming device (e.g., pollution control) > Including exhaust gas condition responsive means
Description: Subject matter wherein the means for forming the mixture of fuel and oxidant senses at least one characteristic or parameter of the products of combustion (e.g., composition, or temperature or pressure, etc.) and uses such information to modify the relative proportion or ratio of fuel and oxidant in the mixture supplied to the internal combustion engine.










Sub-classes under this class:

Class Number Class Name Patents
123/677 Combined with ambient condition responsive means (e.g., pressure) 62
123/679 Combined with engine condition responsive means 138
123/703 Exhaust gas composition sensor 152
123/676 Exhaust gas temperature or pressure repsonsive 291
123/691 Multiple sensors controlling group of cylinders 151
123/698 With addition of secondary fluid (e.g., fuel or exhaust gas) 278
123/701 With auxiliary control of carburetor 48
123/693 With compensator for sensor output (e.g., current or voltage) 58
123/690 With fail-safe, backup, or malfunction means 193
123/674 With modifying or updating memory (i.e., learning) 447
123/673 With sensor controlling each cylinder individually 178


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7900614 Self-calibrating NO.sub.x sensor Mar. 8, 2011
7900615 Air-fuel imbalance detection based on zero-phase filtering Mar. 8, 2011
7878178 Emissions sensors for fuel control in engines Feb. 1, 2011
7877189 Fuel mass control for ethanol direct injection plus gasoline port fuel injection Jan. 25, 2011
7877190 Fuel control device for internal combustion engine Jan. 25, 2011
7849844 Diagnostic method and device for operating an internal combustion engine Dec. 14, 2010
7841326 Method for operating an internal combustion engine Nov. 30, 2010
7832198 System and method for controlling an operating temperature of a catalyst of a vehicle exhaust system Nov. 16, 2010
7835849 Method and device for operating an internal combustion engine Nov. 16, 2010
7809490 Phase and frequency error based asymmetrical AFR pulse reference tracking algorithm using the pre-catalyst O2 sensor switching output Oct. 5, 2010
7797930 Exhaust gas purification device of internal combustion engine Sep. 21, 2010
7788903 Air-fuel ratio control apparatus of internal combustion engine Sep. 7, 2010
7785548 Apparatus and method for storing and releasing sulfur containing aromatic compounds from a fuel stream of an internal combustion engine Aug. 31, 2010
7778764 Fuel injection control apparatus and method for a multi-fuel engine, and engine incorporating same Aug. 17, 2010
7770566 Method for controlling an internal combustion engine Aug. 10, 2010
7769531 Control device of internal combustion engine Aug. 3, 2010
7762127 Method for determining the composition of a fuel mixture Jul. 27, 2010
7743759 Gas sensor controller Jun. 29, 2010
7715975 Engine control system and control method thereof May. 11, 2010
7707999 Exhaust protecting device and protecting method for internal combustion engine May. 4, 2010
7677223 Air-fuel-ratio control apparatus for internal combustion engine Mar. 16, 2010
7658184 Method and apparatus for providing fuel to an aircraft engine Feb. 9, 2010
7654252 Air-fuel ratio control system and method for internal combustion engine Feb. 2, 2010
7620489 Control method for mixture ratio in a multi-cylinder internal combustion engine equipped with at least two lambda sensors placed upstream of a catalytic converter Nov. 17, 2009
7620488 Engine control apparatus Nov. 17, 2009
7607422 Methods of flexible fuel engine conversions Oct. 27, 2009
7581535 Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine by means of an extended Kalman filter Sep. 1, 2009
7556016 Method and device for operating an internal combustion engine Jul. 7, 2009
7536244 Failure diagnostic apparatus and method for an air-fuel ratio sensor May. 19, 2009
7533662 Apparatus for and method of controlling air-fuel ratio of engine May. 19, 2009
7526914 Heater control device for gas sensor May. 5, 2009
7520274 Air fuel ratio sensor deterioration determination system for compression ignition internal combustion engine Apr. 21, 2009
7516618 Engine air supply control method which is intended, for example, for the control of a turbocharged engine Apr. 14, 2009
7513105 Exhaust gas purifying system and abnormality determining method therefor Apr. 7, 2009
7497198 System and method for controlling vehicle operation in response to fuel vapor purging Mar. 3, 2009
7484504 Air-fuel ratio control system and method for internal combustion engine Feb. 3, 2009
7483781 Engine control apparatus Jan. 27, 2009
7475683 Fuel injection control device for a variable-fuel engine and engine incorporating same Jan. 13, 2009
7469685 Control apparatus for internal combustion engine Dec. 30, 2008
7455058 Method and apparatus for controlling stationary gaseous-fueled internal combustion engines Nov. 25, 2008
7404397 Method and apparatus for modifying fuel injection scheme Jul. 29, 2008
7389773 Emissions sensors for fuel control in engines Jun. 24, 2008
7387091 Process for use with dual-fuel systems Jun. 17, 2008
7380546 Vapor fueled engine Jun. 3, 2008
7380396 Method for protecting an exhaust aftertreatment system Jun. 3, 2008
7377273 Air-fuel ratio control apparatus for internal combustion engine May. 27, 2008
7367330 Internal combustion engine controller May. 6, 2008
7353804 Method and arrangement for achieving an adjusted engine setting utilizing engine output and/or fuel consumption Apr. 8, 2008
7337772 Apparatus for and method of controlling temperature of exhaust gas sensor, and recording medium storing program for controlling temperature of exhaust gas sensor Mar. 4, 2008
7328673 Valve timing correction control apparatus and method for an internal combustion engine Feb. 12, 2008

1 2 3 4 5










 
 
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