Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8165786 | System for particulate matter sensor signal processing A system having a particulate matter sensor in an exhaust stream of an engine upstream from a particulate filter and another such sensor downstream from the filter. There may also be an exhaust gas recirculation (EGR) control on the engine. The amount of particulate... | 04/24/2012 |
| 8165787 | Method for adjusting engine air-fuel ratio A method for adjusting an air-fuel ratio of an engine is disclosed. In one example, the engine air-fuel ratio is adjusted in response to a duty cycle and frequency of a post catalyst oxygen sensor. The method may improve catalyst efficiency. ... | 04/24/2012 |
| 8145409 | Approach for determining exhaust gas sensor degradation A method for determining degradation of an exhaust gas sensor positioned in an exhaust system for an internal combustion engine of a vehicle is provided. The method includes sensor response durations to rich-to-lean and lean-to-rich transitions, as well as the symme... | 03/27/2012 |
| 8131451 | Air-fuel ratio sensor and control apparatus for internal combustion engine There is provided an air-fuel ratio sensor with which an improvement in the accuracy in detecting the air-fuel ratio of detection target gas and an improvement in the response characteristics can both be achieved. The sensor includes a sensor element that outputs an... | 03/06/2012 |
| 8108130 | Method for calibrating a lambda sensor and internal combustion engine In the calibration of a lambda sensor (26), inaccuracies occur during a fuel cut-off overrun phase depending on the temperature. A method is proposed for correcting an output signal of a lambda sensor (16) of an internal combustion engine (1), h... | 01/31/2012 |
| 8103429 | System and method for operating a compression-ignition engine A system includes a controller configured to estimate a brake specific nitrogen oxide emission of an engine based on a plurality of sensed parameters of the engine. The controller is also configured to control one or more control variables of the engine to reduce sp... | 01/24/2012 |
| 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 With an internal combustion engine (1) there is the problem that the fuel-air mixture directed into the combustion chamber of the cylinders (2) can be substantially influenced by manufacturing tolerances and ageing of the fuel injectors and uneven dist... | 01/24/2012 |
| 8078388 | Faraday type wireless oxygen sensor An oxygen sensor device and method for a motor vehicle having an electrode within an outer shell for measuring oxygen in exhaust gas exiting the vehicle. A communication device, powered by a capacitor, wirelessly transmits the measured amount of oxygen from the elec... | 12/13/2011 |
| 8073612 | Rotational generation type wireless oxygen sensor An oxygen sensor for a motor vehicle having an electrode within an outer shell measures oxygen in exhaust gas exiting the vehicle and generates a signal based on the oxygen measurement. A communication device, powered by a battery or capacitor, wirelessly transmits ... | 12/06/2011 |
| 8060294 | Control device of oxygen sensor for automotive vehicle, and air-fuel ratio controller and automotive vehicle incorporating the same A control device is arranged to control an oxygen sensor for an automotive vehicle wherein the oxygen sensor has a sensor element and a heater for elevating a temperature of the sensor element. The control device includes a tilt detection section arranged to detect ... | 11/15/2011 |
| 8055437 | CO2 information display and method A method and system for estimating CO2 produced by an internal combustion engine disposed in a vehicle and transmitting the CO2 produced to a display device within the vehicle are disclosed. Estimated CO2 produced is based on amount of fuel consumed and fuel composi... | 11/08/2011 |
| 8041501 | Method and system for monitoring an active hydrocarbon adsorber A method and system for monitoring an exhaust gas adsorber includes a comparison module comparing the first exhaust gas constituent signal corresponding to an amount of exhaust gas constituent in an exhaust conduit and a second exhaust gas constituent signal corresp... | 10/18/2011 |
| 8036814 | Calibration scheme for an exhaust gas sensor Various systems and methods are described for controlling an engine in a vehicle in response to an equilibrium value of an exhaust gas constituent generated from an exhaust gas sensor. One example method comprises during engine fueling below a threshold amount where... | 10/11/2011 |
| 8032291 | Method for detection of emissions levels during extended engine speed controlled operation A method for detection of emissions levels during extended engine speed controlled operation is provided. The method includes monitoring mass airflow passing through the engine while operating the engine. The method further includes adjusting mass airflow responsive... | 10/04/2011 |
| 8027779 | Method and device for operating an internal combustion engine having lambda control When the lambda controller is active (LAM ACT), in the cold operating state (STATE COLD) and in the presence of a predefined first condition, a present cold adaptation value (AD COLD AV) is determined and the present cold adaptation value (AD COLD AV) is assigned a ... | 09/27/2011 |
| 8005605 | Control system and method for internal combustion engine and engine control unit A control system for an internal combustion engine, which is capable of properly controlling both the temperature of an exhaust system and the air-fuel ratio of exhaust gases even when the control range of the air-fuel ratio of a combustion air-fuel mixture is limit... | 08/23/2011 |
| 8000883 | Control apparatus and method for air-fuel ratio sensor The ECU executes a program that includes the steps of: calculating the temperature Texp of the wall surface of the exhaust port and the temperature Tsen of the wall surface of the inner cover covering the zirconia element of the A/F sensor (S110); heating the... | 08/16/2011 |
| 7991539 | Engine controller An electronic control unit 50 determines whether the ambient air in the vicinity of an oxygen concentration sensor 55 in an exhaust passage 30 has become equal to the atmospheric state as a fuel cut-off operation is executed. If the ambient air ... | 08/02/2011 |
| 7941264 | Fuel supply device for flexible-fuel internal combustion engine When it is detected in a fuel supply device for a flexible-fuel internal combustion engine that a refueling operation has been performed for a fuel tank, a return suppression process in which fuel in a delivery pipe is prohibited from returning to the fuel tank thro... | 05/10/2011 |
| 7937209 | Air fuel ratio control system for internal combustion engines A fuel control system of an engine system comprises a pre-catalyst exhaust gas oxygen (EGO) sensor and a control module. The pre-catalyst EGO sensor determines a pre-catalyst EGO signal based on an oxygen concentration of an exhaust gas. The control module determine... | 05/03/2011 |
| 7925421 | Off-line calibration of universal tracking air fuel ratio regulators A fuel control system of an engine includes a simulation module and a control module. The simulation module generates a simulated pre-catalyst exhaust gas oxygen (EGO) sensor signal based on a simulated oxygen concentration of an exhaust gas. The simulation module d... | 04/12/2011 |
| 7899605 | Control device for internal combustion engine During lean combustion, an ECU as a control device for a diesel engine calculates a ratio between a target A/F value and a detected A/F value detected by a A/F sensor, wherein the target A/F value is a ratio between a target air volume and a target injection amount ... | 03/01/2011 |
| 7899606 | Fuel/air mixture control device and method In an automobile fuel control system having an EGO sensor which sends voltage to an ECM in order to adjust fuel/air ratio, the EGO sensor being disabled and replaced with a substitute signal generator circuit which stimulates the ECM toward lean-running. ... | 03/01/2011 |
| 7885757 | Degradation determination apparatus and degradation determination system for oxygen concentration sensor There is provided a dither control means that performs a dither control, which compulsively changes an air-fuel ratio alternately to rich side and to lean side by increasing and decreasing fuel injection quantity of an injector (fuel injection valve) in a stepped ma... | 02/08/2011 |
| 7865294 | Method for regulating the lambda value of an internal combustion engine The invention relates to a method for regulating the lambda value of an internal combustion engine with a catalytic converter for subsequently treating the exhaust gases of the internal combustion engine, with a binary lambda probe, which is mounted upstream from th... | 01/04/2011 |
| 7865295 | Fuel injection controller of flexible fuel internal combustion engine A fuel injection controller includes a correcting section that performs a concentration learning procedure in which a concentration of the alcohol of the fuel in a fuel tank is learned as a learned concentration value based on a detection value of the oxygen concent... | 01/04/2011 |
| 7856307 | Fuel injection control device and method for multi-fuel engine A fuel injection control device for a multi-fuel engine includes a corrector and a reviewer. An alcohol concentration learning unit is provided to learn an alcohol concentration in an injected fuel based on an oxygen concentration detected in an exhaust gas. A fuel ... | 12/21/2010 |
| 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 using a reduced number of wires. An electric heater of the exhaust gas sen... | 12/21/2010 |
| 7844388 | Method for regulating an air-fuel mixture for an internal-combustion engine A method of regulating the actual lambda value for an internal-combustion engine of a motor vehicle in a closed control loop is provided. A lambda setpoint is transferred to a controller for influencing an injection calculation for the internal-combustion engine, an... | 11/30/2010 |
| 7801670 | Temporary suspension of oxygen sensor monitoring during braking operations To avoid potentially erroneous results, monitoring the operation of an oxygen sensor of an internal combustion engine of a motor vehicle to detect a slow response of the oxygen sensor as indicative of an oxygen sensor fault is temporarily suspended in response to a ... | 09/21/2010 |
| 7792632 | Intake air quantity correcting device An intake air quantity correcting device calculates an intake air quantity as a sensing target of an airflow meter (an intake air quantity sensor) based on an injection quantity sensing value sensed with a fuel pressure sensor (an injection quantity sensor) and an o... | 09/07/2010 |
| 7774128 | Method for measuring initial hydrocarbon concentration in canister and controlling fuel injection thereby, and system thereof A method of measuring an initial hydrocarbon concentration in a canister includes opening a purge control valve thereby introducing hydrocarbons from the canister to a cylinder; calculating an amount of air introduced into the cylinder; and calculating the initial h... | 08/10/2010 |
| 7769534 | Asymmetrical oxygen sensor diagnostic and degradation compensation systems A diagnostic system for an engine includes an oxygen detection module, a timing module and a control module. The oxygen detection module receives an oxygen signal from an oxygen sensor that detects an oxygen level in an exhaust system of the engine. The oxygen signa... | 08/03/2010 |
| 7706959 | Method for adjusting the air/fuel ratio of an internal combustion engine A method is for adjusting a fuel/air ratio by means of an on-off controller as well as a diagnostic method in which a desired fuel/air mixture is regulated in accordance with a test signal of a lambda probe that is embodied as a jump probe. The switching point of th... | 04/27/2010 |
| 7680586 | Mass air flow sensor signal compensation system A method and system are disclosed for compensating a mass air flow signal produced by a mass air flow sensor in fluid communication with an air intake passageway of an internal combustion engine. A mass air flow signal produced by the mass air flow sensor is monitor... | 03/16/2010 |
| 7650225 | Engine controller An engine controller comprises a combustion state detection or estimation means for detecting or estimating a combustion state in the combustion chamber, a combustion air-fuel ratio estimation means for estimating a combustion air-fuel ratio in the combustion chambe... | 01/19/2010 |
| 7640095 | Method and device for controlling an internal combustion engine Disclosed is an internal combustion engine comprising a first and a second cylinder line, each of which is provided with a camshaft for the gas intake valves and the gas discharge valves as well as a mechanism for adjusting a valve overlap between the gas intake val... | 12/29/2009 |
| 7613561 | Measurement of NO and NOfor control of selective catalytic reduction A selective catalytic reduction system includes a catalyst, a device to measure an amount of nitrogen oxide (NO), a device to measure an amount of nitrogen dioxide (NO2), a device to add an ammonia source, and a control unit to calculate the amount of amm... | 11/03/2009 |
| 7610142 | Sensor self-calibration system and method A vehicle includes an engine, a booster, an exhaust gas sensor and a self-calibration arrangement for the exhaust gas sensor. When sensor calibration check is desired, a controlling unit opens a valve in order to subject a sensing element of the sensor to a supply o... | 10/27/2009 |
| 7606654 | Oxygen sensor output correction apparatus for internal combustion engine A correction apparatus for correcting an error in an output of an oxygen sensor such as an A/F sensor installed in an exhaust pipe of an internal combustion engine to measure the concentration of oxygen contained in exhaust gas. The apparatus works to determine a gi... | 10/20/2009 |
