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Class Information
Number: 123/694
Name: Internal-combustion engines > Charge forming device (e.g., pollution control) > Including exhaust gas condition responsive means > With compensator for sensor output (e.g., current or voltage) > Output fed to compensating circuit
Description: Subject matter wherein the signal is adjusted or modified after being produced by the transducer.










Sub-classes under this class:

Class Number Class Name Patents
123/696 Proportional or integral circuit 193
123/695 Variable reference value 65


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8596248 Method and device for controlling an internal combustion engine with an automatic engine cut-off and starting system Dec. 3, 2013
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
7813867 Control apparatus and method and control unit Oct. 12, 2010
7802463 Sensor control device and air fuel ratio detecting apparatus Sep. 28, 2010
7805236 Apparatus and method for adjusting the performance of an internal combustion engine Sep. 28, 2010
7655121 Gas sensor interface device and gas sensor system Feb. 2, 2010
7614391 Oxygen sensor output correction apparatus for internal combustion engine Nov. 10, 2009
7455058 Method and apparatus for controlling stationary gaseous-fueled internal combustion engines Nov. 25, 2008
7278394 Air-fuel-ratio control apparatus for internal combustion engine Oct. 9, 2007
7144494 Circuit arrangement for compensating interference signals in the control loop of a linear lambda probe Dec. 5, 2006
6938592 Control method for electro-hydraulic control valves over temperature range Sep. 6, 2005
6918385 Air-fuel ratio detecting apparatus of engine and method thereof Jul. 19, 2005
6837232 Air-fuel ratio control apparatus for internal combustion engine Jan. 4, 2005
6837233 System for enhancing performance of an internal combustion engine Jan. 4, 2005
6591183 Control apparatus for internal combustion engine Jul. 8, 2003
6497135 Controller for use with wide range oxygen sensor Dec. 24, 2002
6491033 Oxygen sensor and feedback system for outboard motor engine Dec. 10, 2002
6357431 Wave form fuel/air sensor target voltage Mar. 19, 2002
6260547 Apparatus and method for improving the performance of a motor vehicle internal combustion engine Jul. 17, 2001
6231735 Oxygen linear sensor test arrangement May. 15, 2001
6223735 Control method for an oxygen linear sensor May. 1, 2001
6205989 Control device for air-fuel radio sensor Mar. 27, 2001
5983878 Engine control Nov. 16, 1999
5970968 Control of a multi (flexible) fueled vehicle utilizing wide range oxygen sensor feedback Oct. 26, 1999
5931143 Air-fuel ratio control system based on adaptive control theory for internal combustion engines Aug. 3, 1999
5918584 Engine control system Jul. 6, 1999
5878733 Air-fuel ratio control system for internal combustion engines Mar. 9, 1999
5845624 Air-fuel ratio control system for internal combustion engine Dec. 8, 1998
5837114 Arrangement for determining the concentration of a component in a gas mixture Nov. 17, 1998
5806506 Cylinder-by-cylinder air-fuel ratio-estimating system for internal combustion engines Sep. 15, 1998
5797384 Air-fuel ratio control system based on adaptive control theory for internal combustion engines Aug. 25, 1998
5787868 Fuel metering control system for internal combustion engine Aug. 4, 1998
5777204 Air-fuel ratio detecting device and method therefor Jul. 7, 1998
5771687 Method for the calibration of a lambda probe in an internal combustion engine Jun. 30, 1998
5720265 Fuel metering control system for internal combustion engine Feb. 24, 1998
5713341 Lean air/fuel engine feedback control system Feb. 3, 1998
5692485 Feedback control system using adaptive control Dec. 2, 1997
5669368 Fuel metering control system for internal combustion engine Sep. 23, 1997
5666935 Fuel injection control for engine Sep. 16, 1997
5649518 Fuel metering control system for internal combustion engine Jul. 22, 1997
5602737 Method of and apparatus for monitoring operation of a catalyst Feb. 11, 1997
5580440 Air fuel ratio sensory Dec. 3, 1996
5558076 Fuel metering control system for internal combustion engine Sep. 24, 1996
5546921 Air-fuel ratio control system Aug. 20, 1996
5517411 Neutral attainment control system/method for controlling shifting in vehicular automated mechanical transmission systems May. 14, 1996
5473888 Air-fuel ratio control system for internal combustion engine Dec. 12, 1995
5465697 Cold start engine air/fuel control system Nov. 14, 1995
5462037 A/F ratio estimator for multicylinder internal combustion engine Oct. 31, 1995
5460028 Circuit arrangement for conditioning the signal of a measuring sensor Oct. 24, 1995

1 2 3










 
 
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