| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 701114000 | Backup, interrupt, reset, or test | 20 |
| 20080234919 | PERFORMING APPLICATION REVIEW VALIDATION TESTING FOR AN ENGINE AS INSTALLED IN AN APPLICATION - A method for performing application review validation testing for an engine as installed in an application, the engine having production sensors and a production electronic control unit (ECU) for controlling the engine using the production sensors, includes running the engine; reading an output of the production sensors with the production ECU during the running of the engine; and determining with the production ECU whether the engine as installed in the application is in compliance with at least one requirement of the application review validation testing based on the output. | 09-25-2008 |
| 20080270011 | Apparatus for failure diagnosis of an intake air flow sensor - An apparatus for failure diagnosis of an intake air flow sensor is provided which, when the operating state of an engine is judged to be in a low flow rate region, determines whether or not the intake air flow rate detected by the intake air flow sensor is excessively high relative to a theoretical intake air flow rate corresponding to the operating state of the engine and, if the detected intake air flow rate is excessively high, judges that the intake air flow sensor has failed. Also, when the operating state of the engine is judged to be in a high flow rate region, the apparatus for failure diagnosis determines whether or not the detected intake air flow rate is excessively low relative to the theoretical intake air flow rate and, if the detected intake air flow rate is excessively low, judges that the intake air flow sensor has failed. | 10-30-2008 |
| 20080270012 | DETECTION OF A HUMIDITY SENSOR FAILURE IN AN INTERNAL COMBUSTION ENGINE - A method to determine degradation of a humidity sensor used for controlling an engine of a vehicle, the humidity sensor exterior to a passenger compartment of the vehicle, the method comprising determining whether to enable monitoring of the sensor based on a duration since vehicle operation; and in response to a determination to enable monitoring, comparing a signal from a second humidity sensor to a signal from the humidity sensor exterior to said passenger compartment of the vehicle to determine whether either of sensors has degraded. | 10-30-2008 |
| 20090043485 | Apparatus and Method for Engine Performance Evaluation - A system that measures the density of the air in the intake of an internal combustion engine and calculates the gain or loss in performance provides a display to an operator in real time in a single, quickly assimilated reading. A display can indicate the combined power increasing effects of turbo/superchargers that increase density and power by compressing the air, as well as charge air coolers that increase density by decreasing the temperature. Density can be measured directly, or calculated from sensor readings. Densities, as well as temperatures and pressures can be displayed as absolute values, as percentage gains or losses verses a known reference such as ambient, or as a loss or gain between density increasing devices to indicate the individual performance of the component. One embodiment incorporates a cradle mounted PDA type handheld computing device on the dashboard to provide the display, input/output and processing hardware. | 02-12-2009 |
| 20090138185 | System and method for detecting misassembly of an exhaust aftertreatment system of a machine - A method of detecting an assembly condition, such as, for example, a misassembly, of an exhaust aftertreatment system of a machine includes a step of executing an aftertreatment assembly diagnostic algorithm. The executing step includes detecting an electronic identification feature of an aftertreatment component of the exhaust aftertreatment system, and comparing the electronic identification feature to an expected value. | 05-28-2009 |
| 20090143963 | Diagnostic of hydraulically switchable engine mechanisms - A method for detecting failure modes of latching mechanisms in a hydraulically switchable variable valve activation system of an internal combustion engine includes the steps of: integrating a pressure sensor in an engine control system including a plurality of switchable mechanisms connected to a common hydraulic gallery, an oil control valve downstream of the oil gallery, and en engine controller activating the oil control valve and the pressure sensor; measuring fluid pressure of the gallery with the pressure sensor; and determining if a failure mode of latching mechanisms occurred by evaluating the measured fluid pressure. Sudden flow changes that produce high frequency fluid pressure oscillations in the oil gallery are detected with the pressure sensor and evaluated by an engine controller to detect lock pin failure modes, such as lock pin ejections and operation of two-step RFF in a low lift mode at elevated engine speeds. | 06-04-2009 |
| 20090182490 | Exhaust gas oxygen sensor monitoring - An internal combustion engine includes an exhaust system, an oxygen sensor in the exhaust system and a sensor malfunction monitor. The sensor malfunction monitor measures a rate of change of a signal from the sensor on detecting a turning point of the signal and detects a malfunction when a rate of change of the signal exceeds a threshold. Alternatively, the sensor malfunction monitor measures a response time interval starting from a point in time at which a diagnostic function begins to force an air-fuel ratio to change (e.g., from lean-to-rich or rich-to-lean) and ends at a point in time when a turning point of the signal is detected. The sensor malfunction monitor detects a malfunction when the delay time of the response time interval, or average delay time from a plurality of measured response time intervals, exceeds a time threshold. | 07-16-2009 |
| 20090312941 | FUEL SYSTEM DIAGNOSTICS BY ANALYZING ENGINE CYLINDER PRESSURE SIGNAL AND CRANKSHAFT SPEED SIGNAL - A method for distinguishing between combustion issues and sensor faults within an engine includes monitoring pressure sensor data from a cylinder within the engine, monitoring engine data describing combustion health from a source other than a pressure sensor, analyzing the pressure sensor data to diagnose an anomalous combustion event, comparing the anomalous combustion event to analysis of the engine data, and indicating a pressure sensor fault warning if the comparison diagnoses a pressure sensor fault. | 12-17-2009 |
| 20110029223 | METHOD FOR DETECTING ELECTRIC POWER BLIPS AND MANAGING THE OPERATION OF A MOTOR - The present invention relates particularly to a method for detecting electric power blips during transmission of an electric signal representative of a magnitude detected by a sensor ( | 02-03-2011 |
| 20110054766 | Diagnostic system and method for hydraulically-actuated cam phasers - A diagnostic system for an engine includes a phaser control module that commands a first cam phaser position of a cam phaser of the engine for a first period and a second cam phaser position of the cam phaser for a second period, and a phaser diagnostic module that diagnoses a phaser control error for the cam phaser based on a first pressure of fluid supplied by an oil control valve to the cam phaser measured during the first period, and a second pressure of fluid supplied by the oil control valve to the cam phaser measured during the second period. The first and second pressures are measured on one of an advance-side fluid chamber and a retard-side fluid chamber of the cam phaser. The phaser diagnostic module detects one of a phaser mechanical fault and a phaser hydraulic system fault. A related method is also provided. | 03-03-2011 |
| 20130096812 | SENSOR SIGNAL PROCESSING DEVICE - A sensor signal processing device includes an AD conversion section, a filter section, a timing signal generation section, and an arithmetic section. The timing signal generation section generates a signal synchronized with a crank angle of an engine based on a signal indicating the crank angle and generates a data acquisition timing signal by compensating the signal synchronized with the crank angle with a delay time of the filter. The arithmetic section acquires a plurality of sensor signals, which is transmitted from a sensor, converted from an analog signal to a digital signal by the AD conversion section, and filtered by the filter section, in a term before and after receiving the data acquisition timing signal and generates a data synchronized with the data acquisition timing signal. | 04-18-2013 |
| 20130158844 | METHOD FOR OPERATING A CONTROL UNIT - A method for operating a control unit for an internal combustion engine is described, the control unit together with at least one additional control unit actuating the internal combustion engine in a first operating mode, wherein the control unit monitors the at least one additional control unit for a malfunction and/or failure, and in the event of a malfunction and/or failure of the at least one additional control unit, the control unit switches from the first operating mode to a second operating mode, in which the control unit is able to maintain an operation of the internal combustion engine independently of the at least one additional control unit. | 06-20-2013 |
| 20130204513 | PROTECT INFORMATION STORED IN ECU FROM UNINTENTIONAL WRITING AND OVERWRITING - Systems and methods that facilitate protecting vehicle impact event data from overwrite include an electronic control unit (ECU) having a processor that records event data related to vehicle operation, a memory that stores the event data, and an electronic tool that communicates with the ECU and comprises a data locking module that sends a data lock signal to the ECU to lock the stored event data as locked data such that the stored event data cannot be overwritten. The ECU, in response to the data lock signal, stores the event data as locked data in a dedicated portion of the memory to preserve the event data for subsequent review. | 08-08-2013 |
| 20150025781 | CANISTER PURGE VALVE LEAK DETECTION SYSTEM - System for detecting leakage within a canister purge valve of an evaporative emission control system. The system includes a power train control module connected to the canister purge valve, configured to command the canister purge valve between open and closed positions. In addition, the system includes a flow meter having an inlet and an outlet. The inlet is in fluid communication with ambient air surrounding the vehicle, and the outlet is in fluid communication with an inlet of the canister purge valve. The system further includes a control module operatively connected to the flow meter. The control module is programmed to analyze flow through the flow meter; compare the measured flow to predetermined flow data; and to indicate whether that flow exceeds a predetermined level. | 01-22-2015 |
| 20150032361 | ENGINE FOR VEHICLE USING ALTERNATIVE FUELS - This invention relates to an engine for a vehicle using alternative fuel, preferably gas, comprising an engine ( | 01-29-2015 |
| 20160010537 | SYSTEMS AND METHODS FOR DIAGNOSING AN ENGINE | 01-14-2016 |
| 20160102626 | METHOD FOR MONITORING OPERATIONAL PARAMETERS IN AN INTERNAL COMBUSTION ENGINE - A method to monitor an operating characteristic in a combustion engine: creating a monitoring matrix divided into a number of sections for storage of information, wherein each section is associated with specific intervals of engine speed ω and torque requested from the engine T | 04-14-2016 |
| 20160138502 | ENGINE BLOCK HEATER FAILURE DETECTION - A vehicle system includes a sensor that measures an engine block heating characteristic associated with an engine block heater. A processing device is programmed to determine an operating state of the engine block heater based on the engine block heating characteristic measured. A communication device is programmed to transmit a message that includes the operating state of the engine block heater. | 05-19-2016 |
| 20160171792 | NEGATIVE PRESSURE ABNORMALITY DETECTION APPARATUS AND CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE | 06-16-2016 |
| 20220136452 | Method And Device For Detecting A Power-Changing Manipulation Of An Internal Combustion Engine - The embodiment relates to a method for detecting a power-changing manipulation of an internal combustion engine ( | 05-05-2022 |
