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Class Information
Number: 123/690
Name: Internal-combustion engines > Charge forming device (e.g., pollution control) > Including exhaust gas condition responsive means > With fail-safe, backup, or malfunction means
Description: Subject matter in which the control means upon detecting failure in a circuit or circuit element shifts (1) operation into a substitute circuit to accomplish the same function or (2) indicates functioning of the circuit or circuit element outside of acceptable parameters.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8554450 Control apparatus and control method for internal combustion engine Oct. 8, 2013
8521405 Air-fuel ratio diagnostic device for internal combustion engine Aug. 27, 2013
8490610 Control device for internal combustion engine Jul. 23, 2013
8494755 Apparatus and method for controlling the speed of an internal combustion engine Jul. 23, 2013
8485167 Abnormality detection apparatus and abnormality detection method for air/fuel ratio sensor Jul. 16, 2013
8447502 Method and system for pre-ignition control May. 21, 2013
8442745 Fuel supply apparatus for internal combustion engine and control method thereof May. 14, 2013
8381708 Vehicle and vehicle control method Feb. 26, 2013
8353273 Method and system for correlating a pressure sensor for a fuel system Jan. 15, 2013
8290688 Exhaust gas oxygen sensor diagnostic method and apparatus Oct. 16, 2012
8285469 Control apparatus for internal combustion engine including variable valve operating mechanism Oct. 9, 2012
8265859 Method and system for pre-ignition control Sep. 11, 2012
8187454 Degradation detector and detecting method May. 29, 2012
8145409 Approach for determining exhaust gas sensor degradation Mar. 27, 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
8091538 Method and device for diagnosing an internal combustion engine; computer program and computer program product Jan. 10, 2012
8079351 Temperature sensor diagnostics Dec. 20, 2011
8073613 Method and system for pre-ignition control Dec. 6, 2011
8060294 Control device of oxygen sensor for automotive vehicle, and air-fuel ratio controller and automotive vehicle incorporating the same Nov. 15, 2011
8050852 Abnormality detection device for internal combustion engine and air/fuel ratio control apparatus for internal combustion engine Nov. 1, 2011
8024105 Apparatus and method for detecting abnormal air-fuel ratio variation among cylinders of multi-cylinder internal combustion engine Sep. 20, 2011
7997257 Method and a device for operating a internal combustion engine Aug. 16, 2011
7975679 Other-type fuel contamination determination apparatus for internal combustion engine Jul. 12, 2011
7971570 Engine controller Jul. 5, 2011
7933712 Defective injection detection device and fuel injection system having the same Apr. 26, 2011
7900616 Exhaust gas oxygen sensor monitoring Mar. 8, 2011
7890245 Diagnostic method and device for controlling an internal combustion engine Feb. 15, 2011
7836870 Method for controlling an internal combustion engine of a motor vehicle Nov. 23, 2010
7826963 Diagnostic system for spark ignition direct injection system control circuits Nov. 2, 2010
7813867 Control apparatus and method and control unit Oct. 12, 2010
7805928 System for controlling exhaust gas sensor having heater Oct. 5, 2010
7765991 Fuel delivery control for internal combustion engine Aug. 3, 2010
7752837 Diagnosis apparatus for internal combustion engine Jul. 13, 2010
7751966 Abnormality diagnostic device and abnormality diagnostic method for air-fuel ratio sensor Jul. 6, 2010
7729846 Control device for engine Jun. 1, 2010
7725241 Fuel injection control device and fuel injection system using the same May. 25, 2010
7725247 Abnormality diagnostic device and abnormality diagnostic method for air-fuel ratio sensor May. 25, 2010
7720595 Abnormality diagnostic device for air-fuel ratio sensor, and control method for the device May. 18, 2010
7685810 Engine control apparatus and engine operating method Mar. 30, 2010
7654253 Detection of a humidity sensor failure in an internal combustion engine Feb. 2, 2010
7650226 Fuel injection system with learning control to compensate for actual-to-target injection quantity Jan. 19, 2010
7644576 Sensor control device Jan. 12, 2010
7614391 Oxygen sensor output correction apparatus for internal combustion engine Nov. 10, 2009
7603994 Abnormality diagnosis device and control system for internal combustion engine Oct. 20, 2009
7603981 Improper fuel mixing determining apparatus for internal combustion engine Oct. 20, 2009
7596447 Control apparatus for internal-combustion engine Sep. 29, 2009
7578288 Method for operating an internal combustion engine, computer program product, computer program, and control and/or regulating device for an internal combustion engine Aug. 25, 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
7520274 Air fuel ratio sensor deterioration determination system for compression ignition internal combustion engine Apr. 21, 2009

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