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Browse by Category: Main > Transportation & Automotive
Class Information
Number: 123/696
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 > Proportional or integral circuit
Description: Subject matter wherein (1) the output signal of the transducer is a predetermined ratio of its input or (2) wherein the output signal of the transducer is fed to a circuit the output of which increases or decreases at a predetermined rate with respect to time.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8489309 Feedback control system Jul. 16, 2013
8381707 Internal combustion engine air-fuel ratio control apparatus and method Feb. 26, 2013
8347866 Fuel control system and method for more accurate response to feedback from an exhaust system with an air/fuel equivalence ratio offset Jan. 8, 2013
8230846 Air-fuel ratio control device for internal combustion engine Jul. 31, 2012
8186336 Fuel control system and method for improved response to feedback from an exhaust system May. 29, 2012
7865294 Method for regulating the lambda value of an internal combustion engine Jan. 4, 2011
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
7455058 Method and apparatus for controlling stationary gaseous-fueled internal combustion engines Nov. 25, 2008
7441554 Engine controller Oct. 28, 2008
7431025 Device for the operation of an internal combustion engine Oct. 7, 2008
7395125 Method and controller for the adaptive control of at least one component of a technical plant Jul. 1, 2008
7322346 Method and device for engine control in a motor vehicle Jan. 29, 2008
7284545 Device for controlling an internal combustion engine Oct. 23, 2007
7240671 Device for correcting fuel injection amount of internal combustion engine, and control apparatus for internal combustion engine employing the device Jul. 10, 2007
7225800 Engine controller Jun. 5, 2007
7082935 Apparatus and methods for closed loop fuel control Aug. 1, 2006
6964159 System and method for adjusting air/fuel ratio Nov. 15, 2005
6854262 Air-fuel ratio control apparatus of internal combustion engine and method thereof Feb. 15, 2005
6769422 Apparatus and method for controlling air-fuel ratio of engine Aug. 3, 2004
6769243 System and method for determining target oxygen storage in an automotive catalyst Aug. 3, 2004
6751947 System and method for estimating oxidant storage of a catalyst Jun. 22, 2004
6520168 Air-fuel ratio controller for engine Feb. 18, 2003
6513510 Method for controlling fuel supply of a vehicle on acceleration and a system thereof Feb. 4, 2003
6483311 Method and device for evaluating ionic current signals for assessing combustion processes Nov. 19, 2002
6467471 Air-fuel ratio controller for an internal-combustion engine Oct. 22, 2002
6453662 System and method for estimating oxidant storage of a catalyst Sep. 24, 2002
6453661 System and method for determining target oxygen storage in an automotive catalyst Sep. 24, 2002
6453229 Air-fuel ratio control device for internal combustion engine and method thereof Sep. 17, 2002
6371096 Diagnosis system for wide-range air-fuel ratio sensor Apr. 16, 2002
6371097 UEGO control circuit board portion with ASIC Apr. 16, 2002
6357431 Wave form fuel/air sensor target voltage Mar. 19, 2002
6325056 Operating method for an internal combustion engine with lambda-value control Dec. 4, 2001
6289877 Method and system for controlling an air-to-fuel ratio in a non-stoichiometric power governed gaseous-fueled stationary internal combustion engine Sep. 18, 2001
6286494 Air-fuel ratio controller for engine Sep. 11, 2001
6233922 Engine fuel control with mixed time and event based A/F ratio error estimator and controller May. 22, 2001
6223735 Control method for an oxygen linear sensor May. 1, 2001
6210641 Air-fuel ratio control system and gas sensor for engines Apr. 3, 2001
6085734 Fuel multiplier transfer from dynamic crankshaft fueling control to oxygen sensor operation Jul. 11, 2000
6073619 Air/fuel engine feedback control system and method Jun. 13, 2000
6067794 Dual control loop system and method for internal combustion engines May. 30, 2000
6029641 Air-fuel ratio control system for internal combustion engines Feb. 29, 2000
6026795 Electronic device for controlling the air/fuel ratio of the mixture supplied to an internal-combustion engine Feb. 22, 2000
5947098 Engine control apparatus Sep. 7, 1999
5941223 Engine control system and method Aug. 24, 1999
5927260 Device for diagnosing oxygen sensor deterioration Jul. 27, 1999
5884613 Air-fuel ratio control system for internal combustion engines Mar. 23, 1999
5867983 Control system for internal combustion engine with enhancement of purification performance of catalytic converter Feb. 9, 1999
5848528 Optimization of closed-loop and post O2 fuel control by measuring catalyst oxygen storage capacity Dec. 15, 1998
5836153 Method for controlling the fuel-air ratio of an internal combustion engine Nov. 17, 1998

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