Class / Patent application number | Description | Number of patent applications / Date published |
701107000 | Fail-safe system | 13 |
20080249698 | Internal Combustion Engine Fail-Safe Control Device and Method - To prevent an increase in torque when the fixed state of a throttle valve is released. When diagnostics reads fixed diagnostics flag | 10-09-2008 |
20080249699 | Method and Device For Monitoring a Fuel Injection Device For an Internal Combustion Engine - The invention relates to a method and a device for operating an injection device ( | 10-09-2008 |
20080262703 | OXYGEN SENSOR OUTPUT CORRECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE - A correction apparatus for correcting an output of an oxygen 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 execute a fuel cut operation to bring the pressure in the exhaust pipe to the atmospheric pressure and enters an under-atmosphere correction mode to sample an output of the oxygen sensor and determine a correction factor compensating for a deviation of the sampled output from a reference value representing an actual concentration of oxygen. The apparatus also works to calculate the pressure in the exhaust pipe after start of the fuel cut and determine whether the under-atmosphere correction mode is to be entered or not based on the pressure of exhaust gas, thereby ensuring the accuracy in correcting the output of the oxygen sensor regardless of a variation in the pressure of exhaust gas. | 10-23-2008 |
20090216429 | CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE - When either one of two injectors of each cylinder becomes abnormal, a control device performs failsafe control of performing increase correction of injection quantity of a normal injector. If actual injection quantity is restricted with the maximum injection quantity that can be injected by the normal injector during the execution of the failsafe control, the control device restricts duty of an actuator of an intake air quantity adjustment mechanism (such as a throttle opening degree), thereby restricting intake air quantity to intake air quantity that does not cause melting damage of a catalyst. Thus, increase of deviation of an air-fuel ratio toward a lean side can be inhibited, and the melting damage of the catalyst can be prevented. | 08-27-2009 |
20110196595 | SYSTEM FOR DISABLING ENGINE THROTTLE RESPONSE - A method and a device for interrupting unintended acceleration or unintended maintenance of vehicle speed comprising providing a driver operated fuel delivery disconnect system, said fuel delivery disconnect system comprising an electronic module programmed to temporarily disconnect electrical feed to a fuel delivery mechanism. The temporary interruption of the electrical feed places the vehicle in an idle mode without disrupting other vehicle control systems. | 08-11-2011 |
20110231083 | FUEL SUPPLY CONTROL APPARATUS FOR ENGINE, AND FUEL SUPPLY CONTROL METHOD THEREFOR - The present invention relates to a fuel supply control apparatus and to a fuel supply control method, provided with an engine control unit and a fuel pump control unit. The engine control unit outputs an actuating signal for a fuel pump to the fuel pump control unit. The fuel pump control unit outputs a diagnostic signal indicating whether or not abnormality occurs in input of the actuating signal to the engine control unit. Furthermore, the engine control unit diagnoses whether or not abnormality occurs in input of the diagnostic signal and diagnoses based on the output signal from a fuel pressure sensor whether or not abnormality occurs in a control of fuel pressure. Then, the engine control unit performs a fail-safe function, based on whether or not the abnormality occurs in the input of the diagnostic signal, whether or not the abnormality occurs in the control of the fuel pressure, and whether or not the abnormality occurs in the input of the actuating signal in the fuel pump control unit. | 09-22-2011 |
20120095669 | FAIL-SAFE CONTROLLER FOR DIRECT INJECTION ENGINE - A fuel pressure varies according to whether a fuel pressure sensor and a high-pressure pump have a malfunction or not. In view of this, a first threshold Perr | 04-19-2012 |
20120239279 | FUEL CONTROL MODULE MAPPING SYSTEM, METHOD AND APPARATUS FOR BI-FUEL AND DUAL FUEL VEHICLES - An apparatus, system and method are disclosed for forcing the fuel control module of a converted bi-fuel vehicle to reference a substitute fuel control map. The apparatus comprises a box affixed inside the cabin of a bi-fuel vehicle to the OBD port which sends false signals to the fuel control module indicating that the bi-fuel vehicle is running on a gasoline, ethanol, or a fuel other than the fuel powering the internal combustion engine. In some embodiments, the box in communication with the fuel control module feeds false sensor readings to the fuel control module to optimize fuel control in the vehicle engine. In other embodiments, the box overrides OEM sensor relay information, or forces the fuel control module to reference aftermarket sensors installed in place of, or in addition to, the OEM sensors. | 09-20-2012 |
20140074382 | Rail Pressure Control Strategy For Common Rail Fuel System - A common rail fuel system includes a common rail supplied by an inlet metered high pressure pump and fluidly connected to a plurality of zero-leak fuel injectors. An electronic controller controls pressure in the common rail predominantly responsive to a rail pressure error when outside of an overshoot avoidance condition corresponding to the error being less than a first threshold and a time rate of change of the error being greater than a second threshold. Pressure in the common rail is controlled predominantly responsive to the time rate of change of the error during the overshoot avoidance condition. | 03-13-2014 |
20140163843 | FUEL SUPPLY APPARATUS FOR INTERNAL COMBUSTION ENGINE - A drive circuit ( | 06-12-2014 |
20160032853 | FUEL SYSTEM DIAGNOSTICS - A method and apparatus for in situ operating an internal combustion engine comprising determining at least one combustion characteristic for a combustion chamber of the internal combustion engine, comprising an actual heat release signal for the combustion chamber; and inputting the actual heat release signal into a diagnostic logic tree for diagnosing changes in combustion characteristics due to at least one of: a malfunctioning fuel injector, a start of combustion timing error; and a change in fuel quality; and performing a mitigation technique to compensate for the changes in combustion characteristics. | 02-04-2016 |
20160131072 | METHODS AND SYSTEMS FOR ADJUSTING FUELING OF ENGINE CYLINDERS - Systems and methods for improving fuel injection of an engine that includes a cylinder receiving fuel from two different fuel injectors is disclosed. In one example, fueling errors for each of the two fuel injectors are determined based on fractions of fuel supplied by the two fuel injectors during different engine operating conditions. | 05-12-2016 |
20190145336 | Work Vehicle | 05-16-2019 |