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8997726 Method for diagnosing a liquid-cooled exhaust manifold of an internal combustion engine  
A method is provided for checking the functional capacity of a liquid-cooled exhaust manifold of an internal combustion engine, having an exhaust line connected to the exhaust manifold, in the...
8939134 Apparatus for controlling internal combustion engine  
An apparatus for controlling an internal combustion engine executes air-fuel ratio feedback control based on a detection result of an exhaust gas sensor and when the engine is shut down, stops...
8788184 Method and apparatus for the self-diagnosis of an exhaust gas probe  
A method for the self-diagnosis of an exhaust gas probe (20). The exhaust gas probe (20) has at least one heating element (26). The method includes a modeled heat output PH is determined for the...
8573190 Method for heating a gas sensor  
In a method for heating a gas sensor (1), in particular an exhaust gas sensor for an exhaust system (5) of a motor vehicle (7), a temperature of the gas sensor (1) is determined and the heating...
8563902 Heater control device and method for exhaust gas sensor  
An oxygen concentration sensor is disposed in an engine exhaust passageway. The alcohol concentration in the fuel used in the internal combustion engine is detected. A target impedance is set on...
8504278 Method and system for detecting a fault during catalyst light-off  
A system and method for controlling engine operation includes a timer module that determines a time period from when a catalyst light-off mode is entered to when an oxygen sensor signal reaches an...
8401766 Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine  
An inter-cylinder air-fuel ratio imbalance determination apparatus (determination apparatus) according to the present invention obtains, based on the output value of the air-fuel ratio sensor, an...
8393316 Internal-combustion-engine control apparatus  
In an internal-combustion-engine control apparatus provided with an exhaust gas sensor control device that outputs a detection signal detected by an exhaust-gas sensor, while switching...
8386155 Fault analysis method for a lambda probe  
A fault analysis method for a lambda probe of an internal combustion engine, in particular for detecting a heater input, has the following steps: measurement of an air ratio in the exhaust gas of...
8359168 Fuel identification system and method  
The present invention relates to a fuel identification system and method normally applied to internal combustion engine vehicles of the flex-fuel type by means of which it is possible to identify...
8296042 Humidity detection via an exhaust gas sensor  
Various systems and methods are described for operating an engine in a vehicle in response to an ambient humidity generated from an exhaust gas sensor. One example method comprises, during engine...
8187454 Degradation detector and detecting method  
A degradation detector of an exhaust gas sensor is disclosed. The detector comprises a first heater resistance estimator (16) for estimating a resistance of a heater that heats the exhaust gas...
8055438 Air-fuel ratio sensor early activation feedback system and method  
An air-fuel ratio sensor early activation feedback system and method includes an air-fuel ratio sensor for measuring an air-fuel ratio in an exhaust gas generated by an internal combustion engine...
7968827 Oxygen sensor heater control strategy  
A heating module for an oxygen sensor comprises an estimated mass module, a cumulative mass module, and a temperature control module. The estimated mass module determines an estimated mass of...
7856306 Vehicle-mounted engine control apparatus  
A vehicle-mounted engine control apparatus can accurately measure the resistance value of a label resistor arranged in an exhaust gas sensor for correcting characteristic variation thereof by...
7850833 Oxygen sensor and air/fuel ratio control system  
An oxygen sensor generating an accurate output concerning low-concentration exhaust gas positioned downstream of a three-way catalyst. The oxygen sensor includes an exhaust gas side electrode...
7820949 Method of starting, stopping and operating gas sensor with built-in heater  
A control apparatus for a gas sensor with a built-in heater is provided which can prevent damage to, deterioration of, and reduction in accuracy of detection of, a gas sensor. When an ignition...
7805928 System for controlling exhaust gas sensor having heater  
An exhaust gas sensor for detecting oxygen concentration in exhaust gas is disposed in an exhaust pipe of an internal combustion engine. The sensor including a heater is controlled by a system...
7765996 Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaust gas sensor temperature control program  
A control input (DUT) for controlling a heater (13) which heats an active element (10) of an exhaust gas sensor (8) includes at least one of another component depending on the difference between...
7730718 Control system for internal combustion engine  
A control system for an internal combustion engine includes an exhaust gas purifying device, an exhaust gas temperature sensor, and temperature estimating device. The exhaust gas purifying device...
7726290 Method and device for operating an internal combustion engine  
An internal combustion engine has at least one cylinder and an exhaust gas tract, in which an exhaust gas sensor, that can be heated in a controlled manner, is arranged. An exhaust gas temperature...
7677231 Control system for an exhaust gas sensor  
An exhaust sensor control system for an exhaust sensor is mounted in an exhaust path of an internal combustion engine, wherein the exhaust sensor includes a sensor element for generating an output...
7654077 Method for controlling an operation of a heatable exhaust-gas sensor of a motor vehicle  
A method is for controlling the operation of an exhaust-gas sensor disposed in an exhaust duct of a motor vehicle and equipped with an internal or external sensor heating device, the motor vehicle...
7655121 Gas sensor interface device and gas sensor system  
An interface device for a gas sensor includes a detection resistor having first and second ends to generate voltages by a current output of the gas sensor, a differential amplifier having first...
7526914 Heater control device for gas sensor  
An oxygen concentration sensor including the sensor element for detecting oxygen concentration in the exhaust gas and the heater for heating the sensor element is installed at the location...
7490596 Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaust gas sensor temperature control program  
A control input (DUT) for controlling a heater (13) which heats an active element (10) of an exhaust gas sensor (8) includes at least one of another component depending on the difference between...
7467628 Oxygen sensor heater control methods and systems  
A control system for an oxygen sensor heater is provided. The control system includes a passive heater control module that generates a heater control signal at a first duty cycle and measures a...
7438067 Method of controlling engine using heated exhaust gas sensor  
A method of controlling an internal combustion engine system. The method comprises supplying a first amount of electric energy to heat to an upstream sensor located in an exhaust gas passage...
7418957 Vehicle control method and vehicle control apparatus  
A vehicle control apparatus and methodology relate to an exhaust gas sensor and sensor heater associated with an exhaust passage of a vehicle engine. The exhaust gas sensor is selectively heated...
7337772 Apparatus for and method of controlling temperature of exhaust gas sensor, and recording medium storing program for controlling temperature of exhaust gas sensor  
The temperature of an exhaust gas flowing through an exhaust passage 3 is estimated or detected, and the temperature of an active element of an exhaust gas sensor 8. (O2 sensor) is controlled at a...
7223946 Method and device for control and diagnosis for the heating of a lambda probe  
A method for controlling and regulating an electrical heating of a probe situated in the exhaust system of an internal combustion engine, a total heating power of the probe being set, and an...
7084379 Control apparatus for gas sensor  
A control apparatus for a gas sensor, wherein a microcomputer 44, which is connected to an oxygen sensor 30 including a detection element 12 and a heater 14, detects the cooling water temperature...
7047944 Method and system to determine engine restart  
The present invention provides a method for computer controlled fuel injection into a vehicle engine under conditions where the vehicle is starting from cold or being restarted after a short...
7036982 Method and apparatus to control an exhaust gas sensor to a predetermined termperature  
The invention provides a control strategy and a control system to control a gas sensor to a target operating temperature. It relies upon both feedback and model-based feedforward control systems...
7017567 Device and method for measuring element temperature of air-fuel ratio sensor, and device and method for controlling heater of air-fuel ratio sensor  
A device according to the present invention is provided with element temperature measurement voltage application circuit for temporarily applying a predetermined voltage for element temperature...
6988047 Method for determining the instantaneous temperature of a medium  
A method for determining the instantaneous temperature of a medium, the medium surrounding an element able to be electrically heated at least intermittently to a constant, known temperature. It is...
6976483 Air-fuel ratio control apparatus for internal combustion engine and method thereof  
When an internal combustion engine is in a low load and low rotation operation, and also an elapsed time after the starting of engine operation is less than a predetermined period of time, a...
6935101 Heating control system for gas sensor of engine  
An electronic control unit of an internal combustion engine performs preheat energization control before activation energization control. In the activation energization control, a gas sensor is...
6879906 Engine control and catalyst monitoring based on estimated catalyst gain  
A system and method for controlling an internal combustion engine determine a catalyst gain based on an exhaust gas sensor positioned upstream relative to a catalyst and at least one exhaust gas...
6859719 Control system and control method for controlling heater, and engine control unit  
A control system capable of controlling a heater that heats an oxygen concentration detector in a fine-grained, efficient, and optimal manner. The control system controls an O2 heater for heating...
6816774 O2 sensor, apparatus for and method of controlling air-fuel ratio, and recording medium storing air-fuel ratio control program  
A system controls the air-fuel ratio in an exhaust gas supplied from an internal combustion engine to a catalytic converter in order to keep an output voltage Vout of an O2 sensor disposed...
6781098 Heater controller for an oxygen sensor  
A heater controller for an oxygen sensor associated with a vehicle engine. The controller includes a start detect section, a restart determination section, and a heater delay control section. The...
6752135 Apparatus for air/fuel ratio control  
A control valve module for gaseous fuels on spark ignited reciprocating engines is presented. The control valve module has a valve that controls gaseous fuel flow to a mixer or other device for...
6696673 Gas concentration detector having heater for use in internal combustion engine  
A gas concentration detector includes a detector element measuring a constituent gas concentration in exhaust gas emitted from an internal combustion engine and a heater for activating the...
6679238 Exhaust gas temperature determination and oxygen sensor heater control  
A method and apparatus determine exhaust gas temperature and control the heater of a heated exhaust gas oxygen sensor. Heater failures are diagnosed based on the level of current flowing through...
6666199 Control device of internal combustion engine and method of judging failure of sensor  
In a control device, in a control device of an internal combustion engine provided with an internal combustion engine main body mounted to a vehicle and a heater operating on the basis of an...
6651639 Heater control apparatus for a gas concentration sensor  
An air-fuel ratio sensor is equipped with a sensing element including a solid electrolytic substrate. When the sending element is warmed up and activated by a heater, a microcomputer controls...
6649041 Deterioration detector for exhaust gas sensor and method of detecting deterioration  
The invention provides a deterioration detector for an exhaust gas sensor capable of detecting an amount of change with age of an internal resistance and conducting deterioration judgment taking...
6543431 System for air-fuel ratio control  
A system and a method of controlling an engine during and after a temporary fueling shut-off during idling, deceleration or a switch to auxiliary power generating device is presented. According to...
6541741 Heater control device for air-fuel ratio sensor  
In performing control to supply power to a heater by detecting the impedance of a sensor element and feeding it back for control, a heater control device for an air-fuel ratio according to the...

Matches 1 - 50 out of 123 1 2 3 >