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Class 701/107 - Fail-safe system


Subclass of Class 701 - Data processing: vehicles, navigation, and relative location
Definition: Control system wherein the digital or programmed data processing system is designed to detect
No. of patents: 129
Last issue date: 05/01/2012


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NumberTitleIssue Date
8170775Fuel injection device for internal combustion engine
The device including: a fuel correction value calculating unit for calculating a correction value for a fuel injection quantity so that an actual air-fuel ratio becomes equal to a target air-fuel ratio; a fuel switching detecting unit for detecting that fuel switchi...
05/01/2012
8140246Method and system for detecting a presence of a block heater in an automobile
The present invention relates to a method and system for detecting a presence of a block heater in an automobile. In one embodiment, an automobile includes an engine, a radiator, an engine coolant temperature (“ECT”) sensor, and/or an engine control unit (“ECU...
03/20/2012
8126636Method of operating an internal combustion engine arrangement
An arrangement includes, but is not limited to an internal combustion engine, a pressure reducer that reduces gas pressure of gaseous fuel for the engine. The reducer connects on a high-pressure side to a gas tank and connects on the low-pressure side to a controlla...
02/28/2012
8126638Engine
In an engine which may show a behavior where an engine speed is not always minimized after compression top dead center of a cylinder in which poor fuel injection occurred, the cylinder in which poor fuel injection occurred is detected. A common rail diesel engine (
02/28/2012
8126637Control system for internal combustion engine
A control system for an internal combustion engine having a valve operating characteristic varying mechanism for continuously changing a lift amount of at least one intake valve of the engine. The valve operating characteristic varying mechanism includes a control s...
02/28/2012
8116965Apparatus for and method of controlling variable valve mechanism
The present invention provides an apparatus for and method of diagnosing whether or not a failure occurs in a variable valve mechanism on the basis of a manipulated variable of an electric actuator. The variable valve mechanism is operated by the electric actuator a...
02/14/2012
8108127Method for inspecting a tank ventilation device, control device, and internal combustion engine
A robust method, an accordingly designed control device, and an internal combustion engine, enables the proper performance of a tank ventilation device during the operation of the internal combustion engine. For this purpose, the position of a pressure switch of the...
01/31/2012
8068972Abnormal combustion detection method for internal-combustion engines
The invention is an abnormal combustion detection method for spark-ignition internal-combustion engines. For each engine cycle, a parameter characterizing a distribution of N combustion indicator values, CA10 for example, acquired over N cycles preceding the cycle i...
11/29/2011
8050850Control apparatus and control method for internal combustion engine
An internal combustion engine includes a valve timing change mechanism that changes the phase of an intake cam, and a lift amount change mechanism that changes lift amount by causing displacement of a control shaft. An electronic control unit performs a coordinated ...
11/01/2011
8024105Apparatus and method for detecting abnormal air-fuel ratio variation among cylinders of multi-cylinder internal combustion engine
An apparatus and a method for detecting abnormal air-fuel ratio variation among cylinders of a multi-cylinder internal combustion engine are provided. The apparatus includes: a catalyst that is provided in an exhaust passage of the multi-cylinder internal combustion...
09/20/2011
7890242Internal combustion engine and method of controlling the same
Immediately after startup of the engine, secondary air is supplied by an air pump into each exhaust branch passage via a secondary-air supply passage. A pressure sensor is disposed in the secondary-air supply passage. An output voltage of the pressure sensor decreas...
02/15/2011
7881858Method and device for monitoring an exhaust gas recirculation system
A method for the diagnosis of an exhaust gas recirculation system in an internal combustion engine, including providing a pressure difference reading, which gives a pressure difference in an air supply section of the internal combustion engine or a pressure differen...
02/01/2011
7788019Control 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 quantit...
08/31/2010
7729846Control device for engine
A control device for an engine includes an air-fuel ratio detector detecting an air-fuel ratio of an exhaust gas of the engine. A feedback controller performs a feedback control of an amount of a fuel injection of mixed fuel including alcohol so that the air-fuel ra...
06/01/2010
7430483Method and apparatus for diagnosing a mechanism
A method of analyzing variations in an indicator of the behavior of a mechanism, in which noise is extracted, and any discontinuities from an indicator in order to obtain a trend, variations in the trend are compared with one or more reference values; and a fault of...
09/30/2008
7415351Method and device for detecting an angular position signal for an internal-combustion engine
The present invention relates to a method for detecting an angular position signal representing the rotary motion of a rotating part of an internal-combustion engine. The internal-combustion engine includes at least one combustion chamber. In addition, a speed senso...
08/19/2008
7403850Automated fault diagnosis method and system for engine-compressor sets
The automated fault diagnostic system operates on engine-compressor sets with one vibration sensor per sub-group of engine cylinders and one sensor per compressor cylinder. Vibration signals linked to crankshaft phase angle windows (“VT”) mark various engine eve...
07/22/2008
7390283Process for controlling an automated motor vehicle drive train and drive train
A process for controlling an automated motor vehicle drive train which has an engine and a transmission, with the step of at least once detecting at least one wear parameter of the transmission during its running performance, the wear parameter representing the wear...
06/24/2008
7343887Apparatus for abnormal diagnosis of variable valve timing mechanism
An abnormality diagnosis system 100 includes a VVT controller 110, an adjustable valve mechanism 120, a cam angle sensor 130, a model computation module 140, an abnormality detection module 150, and an alarm lamp 160....
03/18/2008
7333885Engine control unit
There is provided an engine control unit to ensure operational performance and safety performance of a vehicle by carrying out switchover of combustion according to an operating condition of a vehicle (automobile). A vehicle peripheral condition such as vehicular ga...
02/19/2008
7319926Self-diagnosis display unit
To a self-diagnosis indication system for performing a startup disablement indication when an abnormal condition is self-detected at the time of start up without using on/off signals from a starter switch. There is provided a self-diagnosis indication system for out...
01/15/2008
7289901Vehicle-mounted power generator set
A vehicle-mounted power generator set including: an AC generator driven by an engine of a vehicle; an electric power conversion portion that converts an output of the AC generator into an AC output having commercial frequency; a controller having electric power conv...
10/30/2007
7278411Flow sensor
An exhaust system for receiving exhaust gas of an engine is provided. The exhaust system comprises a cooler configured to cool at least a portion of exhaust gas, a pressure sensor configured to measure an exhaust pressure drop across the cooler, and a controller con...
10/09/2007
7263825Apparatus, system, and method for detecting and labeling a filter regeneration event
An apparatus, system, and method are disclosed for detecting and evaluating a filter regeneration event. The apparatus, in one embodiment, is configured to determine whether an oxidation rate of soot accumulated on a particulate filter has attained a level sufficien...
09/04/2007
7263427Failure diagnostic method and apparatus for manifold pressure sensors
A failed manifold pressure sensor is identified in a control apparatus having two manifold pressure detecting systems as a failsafe. A first comparing unit outputs an abnormal signal when a difference ΔP between manifold pressures PMa and PMb detected respectively ...
08/28/2007
7252055Valve controller
A valve controller includes a detector detecting a shutdown command signal to shutdown an engine, a driving circuit for driving a motor, and a power source controller. The power source controller turns on the driving circuit until the predetermined period has passed...
08/07/2007
7248932Electronic control unit
A main CPU transmits data used in determination of whether or not a target throttle opening degree calculation logic and an estimated target throttle opening degree calculation logic are normal (a target degree and an estimated target degree of throttle opening, and...
07/24/2007
7246583Method and apparatus for diagnosing valve lifter malfunction in a lift on demand system
A method for diagnosing malfunctions of switching valve lifters includes sensing variations in pressure of trapped oil in a drive chamber of a hydraulic camshaft drive, such as a cam phaser, comparing peak oil pressure readings in the drive chamber resulting from th...
07/24/2007
7246028Method for transmitting data from sensor to a control unit, and a corresponding sensor and control unit
A method of data transmission from a sensor to a control unit and a sensor and control unit are described, the sensor transmitting both differential values and absolute values. The differential values are analyzed in the control unit to perform the function provided...
07/17/2007
7239235Non-contact sensor idle validation switch
A switch is disclosed having first and second switch elements each configured to provide power to a sensor when in one state and configured to switch to a second state and provide positional information, for example. The sensor configured to effect the first and sec...
07/03/2007
7225075Method for operating an injection valve of an internal combustion engine
A method for operating an injection valve of an internal combustion engine, whereby the metering of fuel is adjustable in particular by varying the stroke of the nozzle needle of the injection valve, makes it possible to prevent an incomplete closure of the valve du...
05/29/2007
7216639Abnormality diagnosis device for air-fuel ratio sensor
When carrying out abnormality determination for an air-fuel ratio sensor 33 by comparison of an average value tave of all diagnostic values t(n) and an abnormality determination value C, the abnormality determination value C is corrected using an average valu...
05/15/2007
7204239Failure diagnostic apparatus and failure diagnostic method for in-tank canister system
A blocking device provided in an evaporation passage is placed in an open state such that communication between an inside of a canister and an inside of a fuel tank is permitted, a negative pressure generating device provided in an atmospheric passage is operated, a...
04/17/2007
7197917Method and apparatus for diagnosing failure of an atmospheric pressure sensor in an engine control system
A failure diagnosis apparatus and method permit specification of a failed atmospheric pressure sensor in an engine control apparatus having redundant pressure detection systems to ensure failsafe control of the engine. The apparatus includes a calculating unit that ...
04/03/2007
7200469Apparatus and method for processing sensor output signals
A method and apparatus are provided for generating a vehicle control signal that controls a function of a vehicle device associated with a sensed event. The apparatus comprises a first sensor that is configured to provide a first sensor output signal having a first ...
04/03/2007
7195007Apparatus for calculating amount of recirculated exhaust gas for internal combustion engine
An intake pipe downstream of a throttle valve is interconnected with an exhaust pipe via an EGR supply pipe and an EGR control valve is disposed in the EGR supply pipe. An engine load ratio (KLoff) in the engine steady operation with the EGR gas being not supplied, ...
03/27/2007
7174249Intelligent driver module for controlling operation of a fuel pump
A driver module is provided for controlling operation of a fuel pump of a vehicle. The driver module includes switching circuitry for switching transmission of electrical power to the fuel pump, and a processor for executing a series of programmable instructions for...
02/06/2007
7171301Method and system for detecting an absolute pressure sensor malfunction
A method for detecting a malfunction in a manifold absolute pressure sensor used in an internal combustion engine. The method includes obtaining a plurality of samples from the manifold absolute pressure sensor. A plurality of samples is obtained from a mass airflow...
01/30/2007
7165389Catalyst degradation determining method
A catalyst degradation determining method includes the steps of: controlling an upstream-of-catalyst air-fuel ratio occurring upstream of a first catalyst to an air-fuel ratio that is rich of a stoichiometric air-fuel ratio so that first and second catalysts store o...
01/23/2007
7162353Automotive control apparatus and method
An apparatus and a method for controlling an automotive vehicle are disclosed, in which a control amount for securing safety of the vehicle and the control amount for achieving a state intended for by the driver of the vehicle are switched in such a manner as to red...
01/09/2007
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