Patent
Ionization probe interface circuit with high bias voltage source
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TLDR
In this paper, the primary winding of an engine ignition coil is coupled to an ionization probe detecting cylinder combustion in order to apply a bias voltage, which is used to detect cylinder combustion.Abstract:
The primary winding of an engine ignition coil is coupled to an ionization probe detecting cylinder combustion in order to apply a bias voltage.read more
Citations
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Patent
Method and apparatus for detecting ion current in an internal combustion engine ignition system
TL;DR: In this article, a method for detecting ion current in an ignition circuit included in the ignition system of an internal combustion engine was proposed, where a measuring voltage was applied to the ignition circuit and a measuring device was utilized for detecting the ion current possibly present in the circuit.
Patent
Apparatus and method for controlling air/fuel ratio using ionization measurements
TL;DR: In this paper, an air/fuel ratio control system for an internal combustion engine to reduce emissions and increase engine efficiencies includes an ionization apparatus for detecting and measuring ionization within a combustion cylinder and generating an ionisation signal based upon the ionization detection and measurements.
Patent
Exhaust gas control using a spark plug ionization signal
Chao F. Daniels,Guoming G. Zhu +1 more
TL;DR: In this paper, a closed loop control of the exhaust gas re-circulation to provide the engine with the either EGR MBT timing or a knock limited timing to yield the minimum NOx emission with maximum fuel economy benefits associated with exhaust recirculation.
Patent
Enhanced error concealment for spatial audio
Jussi Virolainen,Ari Lakaniemi +1 more
TL;DR: In this article, an error concealment method for multi-channel digital audio is proposed, where the first and second audio channels are correlated with each other in a manner so that a spatial sensation is typically perceived when listened to by a user.
Patent
Ignition system with ionization detection
Edward Van Duyne,Paul Porreca +1 more
TL;DR: In this article, a high power ignition system for internal combustion engines with a detection circuit for sensing and measuring ionization in a spark plug gap is presented, where a signal processor analyzes an ionization signal created by the detection circuit to derive useful ignition system data such as engine misfire, combustion duration, engine knocking, approximate air/fuel ratio, indications of spark plug fouling and preignition.
References
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Patent
Apparatus for detecting pressure fluctuations in the combustion chamber of an internal combustion engine
TL;DR: In this paper, an ionic current sensor is used to detect pressure fluctuations in the combustion chamber of an internal combustion engine, which is exposed to the gases in combustion chamber and comprises a first electrode and a second electrode, between which a measurement voltage is applied and between which the connecting channel extends from the open combustion chamber into a dead space.
Patent
Method and apparatus for closed-loop ignition time control
TL;DR: In this article, a closed-loop control of the instant of ignition is proposed, in which, with the aid of an ionic current sensor, the end of the ignition phase of an operational mixture of an internal combustion engine is ascertained as an actual value, and the instant-of- ignition is corrected in accordance with the deviation of this actual value from a set-point value relating to the crankshaft angle.
Patent
Voltage source for ion current measurement in an internal combustion engine
Alfred Kizler,Guenter Schirmer +1 more
TL;DR: A voltage source for measurement of pressure fluctuations in internal combustion engine cylinders by current detected between the electrodes of the sparkplug after the spark has died down, is derived from the ignition voltage as mentioned in this paper.
Patent
Device for refining the adjustment of the ignition advance of a controlled-ignition internal combustion engine
Giampaolo Garcea,Edoardo Rogora +1 more
TL;DR: In this paper, a comparison circuit is presented for refining the adjustment of the angle of ignition advance in an internal combustion engine, which is calibrated according to an optimum preselected ratio between the angles of rotation of the crankshaft relative to the top dead center of an engine cylinder.
Patent
Controlled-ignition I.C. engine with thermal detection system
TL;DR: In this article, a temperature sensor is placed far from the sparking plug to send signals to a governing electronic circuitry which is arranged for modifying the ignition advance responsively to abnormal situations and for restoring normal running conditions as soon as the disturbing phenomena have ceased to occur.