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7418956 Ignition apparatus for an internet combustion engine  
An ignition apparatus for an internal combustion engine can be produced at low cost and small size by preventing the generation of a spark at a spark plug due to a turn-on voltage with a simple...
7348687 Driving circuit for an ignition element of a passenger protection system  
Driving circuit for an ignition element of a passenger protection system The present invention relates to a driving circuit for an ignition element of a passenger protection system which has the...
7347195 Method and device for controlling the current in a spark plug  
The present invention relates to a method of controlling the spark current in a spark plug ( 8 ), comprising a voltage source ( 1; 14 ), an ignition system ( 2 ) connected to the voltage source,...
7328100 Coil 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...
7164271 Ion current detecting device in internal combustion engine  
An ion current detecting device includes an ion current detecting unit which detects ion current based on combustion ion generated after an ignition which is performed in a combustion chamber and...
7095234 Device for triggering ignition circuits  
A device for triggering ignition circuits is provided, a coupling being provided between a positive output stage and negative output stage of different pairs. Each positive and each negative output...
7061245 Coil-on plug capacitive sensors and passive coil-on plug diagnostic system incorporating same  
A capacitive sensor for a coil-on plug ignition testing apparatus includes a first portion of the capacitive sensor and a second portion of the capacitive sensor, at least one of which has a...
7053623 Spark ignition system with diagnostic capabilities  
An ignition and diagnostic system ( 10 ) for an internal combustion engine includes a sparking device ( 12 ) through which a low voltage diagnostic device ( 54 ) monitors a sensing feature, for...
7009400 Universal capacitive adapter for engine diagnostics  
A capacitive sensor for an ignition testing apparatus includes a substrate bearing a sensor metallization and a ground metallization, an output lead, a mounting device integrated with the substrate...
7005855 Device to provide a regulated power supply for in-cylinder ionization detection by using the ignition coil fly back energy and two-stage regulation  
The present invention is directed to a dual charge rate power supply circuit and method for ionization detection. The circuit includes a first diode, first and second capacitors, and first and...
7002351 Variable compensation circuit for capacitive adapters  
A variable compensation circuit for capacitive adapters is provided and includes an input connector for receiving a signal output from a capacitive adapter positioned within an electric near field...
6972569 Waste-power KV simulator for hybrid/DIS ignition  
A testing apparatus for testing a waste-power ignition coil is provided and includes an igniter simulator having a first switching device electrically connected to an output of the primary side of...
6969995 Measuring device for ignition voltages  
The invention relates to a measuring device with a sensor ( 4 ) for monitoring the ignition voltage of an associated cylinder of an internal combustion engine, said sensor ( 4 ) being arranged...
6943554 Ionic current detection apparatus for internal combustion engine  
An ionic current detection apparatus for an internal combustion engine does not generate a false ionic current, and hence it does not generate a false knock component signal either, thereby...
6940284 Efficient diagnosis of faulty distributorless and hybrid ignition systems  
A method for efficiently determining whether a distributorless or hybrid ignition system is the origin of engine problems by consecutively disconnecting and reconnecting the primary connector from...
6940283 Detecting field from different ignition coils using adjustable probe  
Detecting the magnetic field generated by a coil-on-plug ( 101 ) (aka coil-over-plug) using an adjustable probe ( 111 ). The probe ( 111 ) includes a signal detector ( 115 ) for detecting the...
6914434 Driver circuit  
Driver circuit ( 1 ) for actuating an electrical device via a control line ( 3 ) and for diagnosing the state of the control line ( 3 ) and/or of the actuated device, having a test circuit (Q 1 -Q...
6850069 Coil on plug capacitive signal amplification and method of determining burn-time  
A coil-on plug testing apparatus for detecting a weak field output by a shielded coil-on plug ignition and generating an output signal representing an ignition signal includes a capacitive sensor...
6844735 Method for inspecting ignition device for internal combustion engine and inspection device  
An inspection object constructed of an ignition plug and an ignition coil is inserted in an inspection housing that does not have a ground electrode. A voltage generated in the ignition coil is...
6813932 Misfire detection device for internal combustion engine  
A misfire detecting device for an internal combustion engine including an ion current detecting means for detecting ion currents generated between electrodes of spark plugs; an ion current judging...
6766243 Device and method for ignition in an internal combustion engine  
In a device and a method for ignition of an internal combustion engine having at least one cylinder is described, the device includes a central control unit and peripheral units, each being...
6741080 Buffered ion sense current source in an ignition coil  
In an ignition coil assembly of an ion sensing ignition system having an ignition coil output, a buffered ion-sense current source circuit is provided and includes a current sensing circuit, the...
6734677 Device and method for detecting engine combustion condition  
A combustion condition detecting device detects combustion ions between opposing electrodes in a combustion chamber by ion current flowing between the electrodes in response to a.c. current voltage...
6734676 Method and timing circuit for generating a switching or control signal  
A method for generating a control signal after a predeterminable period of time is described. The method includes applying a voltage to an inductor at a beginning of a time measurement; and...
6720772 Data holding device of an internal combustion engine  
The data holding device includes a switch adapted to be turned on and off in accordance with a state of the engine, a control element in the form of a CPU for determining the presence or absence of...
6717412 Ignition signal pickup interface box  
Method and apparatus for displaying ignition coil waveforms. The method includes disposing a plurality of capacitive elements adjacent a plurality of coil-over-plug ignition coils. Signals detected...
6696840 Device for triggering ignition circuits  
A device for triggering ignition circuits is used to increase safety without additional expenditures in the form of hardware or wiring. Plus and minus output elements of various ICs are used for...
6694929 Water-cooled engine control  
An electronic control unit for a combustion engine having a water coolant passageway in heat transfer adjacency to the unit and adapted to remove heat from the unit. An ECU for combustion engine,...
6653840 Ion current detecting device for internal combustion engine  
In an engine ignition unit, a transistor and a current detecting resistor are connected to primary and secondary windings of an ignition coil, respectively. The current detecting resistor is used...
6642718 Ignition system monitoring assembly  
An ignition system monitoring assembly for use in a combustion engine is disclosed. The assembly includes an igniter having at least one positioning guide with at least one transmittal member being...
6600322 Stroke distinction in 4-cycle engines without a cam reference  
Methods, apparatus, and systems for distinguishing between compression and exhaust strokes of a four-cycle engine is provided. A first ionization time of a spark plug for a known cylinder is...
6545478 Electronic ignition device for an engine  
The electronic ignition device includes an ignition coil with a primary winding terminal and a secondary winding terminal generating a spark, a power element arranged between the primary winding...
6531872 Ignition-off timer diagnostic  
A method and an apparatus for diagnosing the Ignition-Off Timer of an internal combustion engine. This invention monitors the initial operation of the Ignition-Off Timer each time it is enabled in...
6498490 Ion sense ignition bias circuit  
Disclosed is a bias and measuring circuit that improves the ion sense measurement and ignition performance of an Ion Sense Ignition system where the ion current signal processing is implemented...
6462557 System for the complete diagnosis of a driver  
A system for diagnosing a driver and detecting circuit anomalies therein includes: voltage comparator circuits for generating diagnostic logic signals, each of which indicates the existence of a...
6388445 Capacitor discharge engine ignition system with automatic ignition advance/retard timing control  
A capacitor discharge engine ignition system that includes an ignition coil having a primary winding and a secondary winding for coupling to an engine ignition spark plug. A first electronic switch...
6278278 Measuring and diagnostic device for an ignition system of an internal combustion engine  
The primary-side voltage profile of an ignition voltage is converted into an analog current through the use of a first regulating circuit, whose output voltage is compared with a first comparison...
6275041 Combustion state detecting apparatus for internal combustion engine  
A combustion state detecting apparatus for an internal combustion engine is imparted with facility for determining discriminatively the causes for non-occurrence of combustion. The apparatus...
6222367 Combustion state detecting device for an internal combustion engine  
There is provided a combustion state detecting device for an internal combustion engine even in the case where disconnection of a secondary current path or misfire in an ignition plug occurs. A...
6188224 Process for the diagnosis of an ignition device of an internal combustion engine  
The diagnosis of an open-circuit fault or of a short-circuit in an ignition system is effected by performing asynchronous periodic extraction of samples of current in a switch. A check is made to...
6118276 Ion current detection device  
An ion current detection device is disclosed that is designed to hold an ion current output voltage within a prescribed limit to ensure proper operation of a processing device connected to the...
6091244 Method and arrangement for detecting combustion misfires of a internal combustion engine  
The invention is directed to a method of detecting combustion misfires of an internal combustion engine wherein an ion current is generated during the operation of the engine. The ion current...
6075366 Ion current detection apparatus for an internal combustion engine  
An ion current detection apparatus for an internal combustion engine includes a voltage limiting device for limiting an amount of counterelectromotive force of a primary coil of ignition coil...
6043660 Circuit arrangement for measuring an ion current in a combustion chamber of an internal combustion engine  
A circuit arrangement measures an ion current generated in the combustion chamber of an internal combustion engine during an iron current flow phase following an ignition phase. A voltage drop...
5970965 Inductive coil ignition system for an engine  
An inductive coil ignition system for an engine, having at least one ignition coil which includes a primary winding fed from a voltage source and having two terminals, and a secondary winding also...
5939797 Ignition control system  
An ignition control system controls an ignition of a vehicle engine based on a pulse signal generated by a pulse coil in response to a rotation of the vehicle engine by using a rectified output of...
5872312 Method for recognizing defective ignition or injection system in internal combustion engines  
A method of detecting defective ignition or fuel injection system of an internal combustion engine with several cylinders and at least two spark plugs or two fuel injection devices per cylinder...
5821754 Ignition system for an internal combustion engine  
An ignition system for internal combustion engines, which have means for detecting the secondary voltage transformed to the primary side of an ignition coil, the signal detected by these means...
5814994 Circuit layout for ion current measurement  
With a transistor ignition system, in order to generate an ion current measurement signal at the secondary end, the ignition transistor, following an ignition triggering impulse, will be driven...
5790039 Method for detecting the presence of a spark in an electronic ignition system used with an internal combustion engine  
A method for detecting the presence of a spark in an electronic ignition system. The method consists of generating an overvoltage event and then generating a voltage signal proportional to the...
Matches 1 - 50 out of 92 1 2 >