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Class 123/406.16 - Knock control malfunction responsive


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter wherein the regulating means is responsive
No. of patents: 66
Last issue date: 03/25/2008


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NumberTitleIssue Date
7347081Knock detecting apparatus and method for internal combustion engine
The signal levels of vibration waveform signals outputted by knock sensors are extracted at a filter processing section for each of a plurality of frequency bands. The mean value of the signal levels in the frequency bands at a point in time when variation of the si...
03/25/2008
7328100Coil failure detection system for general-purpose engine
In a failure detection system of coils that produce outputs in response to rotation of a crankshaft of a general-purpose engine (including a power coil that produces an output indicative of the engine speed), the outputs produced by the coils are inputted to determi...
02/05/2008
7299680Knocking detection
An in-cylinder pressure sensor for outputting a signal corresponding to an internal cylinder pressure of an engine is provided. A first signal and a second signal are extracted from the output signal of the in-cylinder pressure sensor. The first signal has a frequen...
11/27/2007
7281522Acceleration sensor status detecting apparatus
An acceleration sensor state detecting apparatus for detecting a state of an acceleration sensor provided at a vibrating body includes a calculating method for calculating a difference between measured results of the acceleration sensor obtained per first predetermi...
10/16/2007
7263872Method for determining the energy of a knock signal for an internal combustion engine
The invention relates to a method for determining the energy (KNKE) of the knock of an internal combustion engine, using an analog signal supplied by a sensor fixed to the engine. The inventive method includes the following steps: a) the analog signal is shaped, b) ...
09/04/2007
7222607DSP-based engine knock detection including knock sensor and circuit diagnostics
A knock detection system for a spark-ignition engine includes a knock sensor that is responsive to vibration of the engine and that generates a knock signal. A first module calculates a knock energy based on the knock signal and a second module calculates a knock in...
05/29/2007
7219006Knock determining apparatus
A knock determining apparatus includes a sensor which outputs a waveform signal corresponding to a knock state, and at least one of a first to a third knock determiner which determines a knock state based on a vibration intensity distribution of the waveform signal....
05/15/2007
7204123Accuracy enhancement of a sensor during an anomalous event
A method for enhancing the accuracy of a sensor is provided. The method includes determining a measure of the output of the sensor, determining whether the measure falls outside of an acceptable range for the output of the sensor, and, when the measure falls outside...
04/17/2007
7181334Method and apparatus to diagnose intake airflow
An engine control system including an engine controller, a plurality of sensors coupled to the engine controller, and a neural network operating in the engine controller, and where upon failure of at least one of the plurality sensors, the neural network generates a...
02/20/2007
7121260Ignition timing control apparatus for engine
An ignition timing control apparatus for an engine includes a controller that sets an ignition timing considering a change of a temperature or a pressure in a combustion chamber at a time when an opening/closing characteristic of an intake valve is changed, the open...
10/17/2006
7062955Combustion-pressure-data acquisition system of multi-cylinder engine
A combustion-pressure-data acquisition system of a multi-cylinder engine according to the present invention includes an in-cylinder pressure sensor CPS#n for directly detecting combustion pressure in each cylinder; an amplifier unit AP#n to which the in-cylinder pre...
06/20/2006
7051575Control device for internal combustion engine
A control device for an internal combustion engine comprising: a knocking sensor for detecting a knocking signal of the internal combustion engine; a band pass filter for extracting a knocking signal of a predetermined frequency band from the output signal of the kn...
05/30/2006
7010418Method and device for blanking out interference noise during knock recording in an internal combustion engine
The present invention creates a method and an apparatus for blanking out interfering noise in connection with detecting knocking in an internal combustion engine. The following functions are performed: Forming a sensor signal integral value (KI) during a measurement...
03/07/2006
6988483Control apparatus for an internal combustion engine
To provide a control apparatus for an internal combustion engine which can judge an abnormality regardless of one line type or two line type, and can also detect the classification of abnormality. The control apparatus includes: a knock sensor having a piezoelectric...
01/24/2006
6915783Method for the damping of mechanical vibrations in the drive train of an internal combustion engine
A method for the damping of mechanical vibrations in the drive train of an internal combustion engine by detection of vibration excitations in the drive train, and adjustment of the ignition angle of the internal combustion engine in the event of the occurrence of a...
07/12/2005
6912460Method for detecting knock in an internal combustion engine
The method for knock detection includes establishing that knock is occurring in the internal combustion engine when the amplified knock signal exceeds a predetermined reference level in a predetermined manner. The reference level is determined on the basis of indivi...
06/28/2005
6907341Misfire detector
A misfire detector is provided that is accurate even in the case of a disturbance due to causes such as driving on a rough road. The misfire detector is equipped with a crankshaft revolution detector to measure the time period required for the crankshaft of an inter...
06/14/2005
6898509Method of controlling an internal combustion engine
A method of controlling an internal combustion engine is provided, in which at least two operating states are differentiated, at least one operating variable of the engine being controlled, a setpoint torque being predetermined on the basis of the optimum operating ...
05/24/2005
6889655Device for controlling the ignition timing for internal combustion engines
A device for controlling the ignition timing for internal combustion engines correctly detecting fault of a knocking sensor over the whole rotational range of the engine. The device for controlling the ignition timing takes out knocking signals and produces an ignit...
05/10/2005
6868330Method of setting the knock detection sensor of a piston engine
A method of operating a knock detection system of a multi-cylinder piston engine in which the knock detection system comprises a sensor arranged in connection with each cylinder and a measurement circuit connected to the sensor includes running the engine at a load ...
03/15/2005
6863052Knocking control apparatus and method and engine control unit for variable cylinder internal combustion engine
A knocking control apparatus for a variable cylinder internal combustion engine avoids erroneous determination of knocking during a fault in a cylinder pausing mechanism to appropriately control knocking associated with the ignition timing, thereby preventing engine...
03/08/2005
6862517Method for processing a sensor signal of a knocking sensor for an internal combustion engine
Method for processing a sensor signal of a knocking sensor for an internal combustion engine, having the following steps: a time window is defined for the evaluation of the sensor signal as a function of the operating state and/or the operating behavior of the inter...
03/01/2005
6814048Method and devices for avoiding knocking on failure of an anti-knock regulator
A device having a monitoring circuit for a knock control and a control circuit which initiates substitute measures in the event of a fault in the knock control, depending on the output signal of the monitoring circuit, is described. The control unit is designed, for...
11/09/2004
6805097Method for regulating knocking
A method for controlling knocking in multi-cylinder internal combustion engines in KC emergency operation and at activated guide-cylinder function are provided by which a torque loss is able to be avoided at low application expenditure and the functionality desired ...
10/19/2004
6769402Method for knock regulation in an internal combustion engine
A method for knock control of an internal combustion engine, a knock detection being carried out on the cylinders of the internal combustion engine and a moment of ignition being retarded by a specifiable value as a function of detected knocking combustion in at lea...
08/03/2004
6742500Method for operating an internal combustion engine, and corresponding device
A method and a device for operating an internal combustion engine are provided, in which in at least one cylinder, combustion of a fuel in a fuel/air mixture introduced into the cylinder takes place. Upon the occurrence of knocking, a baseline ignition angle in the ...
06/01/2004
6727812Method and device for error detection and diagnosis in a knock sensor
A method and a device for fault detection or diagnosis may be used on a multi-cylinder internal combustion engine with a knock sensor. For diagnostic purposes an instantaneous reference value formed from the sensor signal may be compared with predefinable upper or l...
04/27/2004
6662781Method and device for electronic spark control in the event of the failure of the phase detector
A method and a device for controlling knock in response to the failure of a phase detector are described, which implement the normal, cylinder-selective knock control under the condition, that the dual ignition is not activated. If the dual ignition is ac...
12/16/2003
6615645System and method for generating a knock determination window for an ion current sensing system
An ignition apparatus including a primary and a secondary winding for producing a spark voltage, an ion current detection circuit for producing an ion current signal, a slope detector and a knock detector. The slope detector determines when the ion curren...
09/09/2003
6588252Diagnostic method for rapidly detecting erroneous operation of a knock sensor of an internal combustion engine
In the diagnostic method for detecting erroneous operation of a knock sensor of an internal combustion engine an actual reference level is formed from knock sensor signals generated by the knock sensor; then two minimum knock detection thresholds consisti...
07/08/2003
6550311Method of error detection during evaluation of sensor signals
A method for error detection during an evaluation of sensor signals, in particular during an evaluation of output signals of knock sensors in an internal combustion engine, with at least one sensor and an evaluating device connected therewith, the method ...
04/22/2003
6474302Knock control apparatus for internal-combustion engine
To obtain a knock control apparatus for internal-combustion engine having a function of judging whether or not the causes for failure have been solved for returning to normal knock control at the time of the solution, and capable of easily judging failure...
11/05/2002
6317681Method for monitoring the operation of sensors in an internal combustion engine, and electronic controller operating in accordance with the method
A method for monitoring the operation of sensors in an internal combustion engine includes providing reference values from output signals from a sensor. A sliding average (comparison value) is calculated from a relatively large number of reference values....
11/13/2001
6230546Method and apparatus for detecting combustion knock from the ionic current in an internal combustion engine
A method and an apparatus for detecting knocking combustion in an internal combustion engine, by evaluating the ionic current signal sensed in the combustion chamber, is especially adapted to correct or compensate the ionic current signal for longterm var...
05/15/2001
6204770Master automotive sensor tester
A sensor tester for testing multiple vehicle sensors is provided comprising: a circuit for testing a vehicle piezoelectric knock sensor; a circuit for testing a vehicle speed sensor; and a circuit for testing ignition coils. The circuit for testing piezoe...
03/20/2001
5916296Dual processor automotive control system having flexible processor standardization
To execute high-accuracy control employing communication data of a microprocessor while attempting standardization of the microprocessor, a host microprocessor is provided with a ROM, RAM, CPU, and DMA controller, and a KCS microprocessor is provided with...
06/29/1999
5517969Device for detecting faults in an apparatus for detecting knocking
A device for detecting faults in conjunction with the detection of knocking in an internal combustion engine is disclosed, in which device the sensor output signals are compared with an engine speed-dependent, normalized reference level in order to detect...
05/21/1996
5483936Spark knock detection system for an internal combustion engine
A spark knock detection system is disclosed which has a vibration detector connected in proximity to the engine for converting a vibration into an electrical output signal representative of the vibration. A sampler which is connected to the vibration dete...
01/16/1996
5404854Knock control system for internal combustion engine
A knocking vibration detecting unit (1) and a knock deciding unit (c) are integrated, and the communications of a knock intensity between the knock deciding unit (c) and an engine controlling microcomputer (7) are carried out in combination of a change fr...
04/11/1995
5186145Knocking control apparatus for internal combustion engine
A control apparatus for an internal combustion engine having: a sensor for detecting a running condition of the internal combustion engine; a detector for detecting information indicative of the running condition in accordance with an output signal of the...
02/16/1993
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