Celebrity Inventors
Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8037867 | Method and device for controlling an internal combustion engine In a method and a device for controlling an internal combustion engine (1), the accuracy of the detection of knocking in an internal combustion engine (1) can be increased by determining a reference ignition advance angle for an actual operating point ... | 10/18/2011 |
| 7798124 | Method and system for closed loop combustion control of a lean-burn reciprocating engine using ionization detection A system and method for controlling knock in a lean burn internal combustion (IC) engine includes a spark plug having an electrode, an electrical circuit, and a controller. The electrical circuit is configured to provide a first voltage to the electrode and detect a... | 09/21/2010 |
| 7798125 | Method and system for closed loop combustion control of a lean-burn reciprocating engine using ionization detection A system and method for controlling knock in a lean burn internal combustion (IC) engine includes a spark plug having an electrode, and an electrical circuit configured to provide a first voltage to the electrode and detect an ion current during a thermal-ionization... | 09/21/2010 |
| 7673616 | Engine control including knock compensation Systems and methods are described, including one example method of controlling an engine having a cylinder with at least one valve operated by a variable valve mechanism (VVM) having a sensor coupled to the valve, the method comprising: adjusting at least one operat... | 03/09/2010 |
| 7637248 | Method for operating an internal combustion engine by determining and counteracting a pre-ignition state In a method for operating an internal combustion engine, wherein the internal combustion engine has a cylinder in which a combustion chamber is provided that is delimited by a reciprocating piston guided in the cylinder, wherein the piston is connected by a connecti... | 12/29/2009 |
| 7478624 | Ignition timing control device of internal combustion engine An engine ECU executes a program including a step of calculating intensity values LOG(V), a step of detecting vibration waveforms, a step of calculating a correlation coefficient K based on vibration waveforms, a step of preparing frequency distribution of intensity... | 01/20/2009 |
| 7398761 | Knocking control device for multicylinder engine To reliably prevent knocking in all of the cylinders of a multicylinder engine by detecting an output signal from a knock sensor provided for only one of the cylinders. A cylinder barrel is formed with a knock sensor base on the side surface of only the third cylind... | 07/15/2008 |
| 7370634 | Internal combustion engine spark timing control system A method for controlling spark timing in an internal combustion engine. The method includes determining, in response to a knock sensor mounted to the engine, a spark offset to the scheduled spark timing for the engine at relatively low engine speed which is applied ... | 05/13/2008 |
| 7356404 | Knock determination apparatus and method for engines In determining a knock of an engine, a vibration intensity is calculated by logarithm-transforming a peak value or an integral value of an output signal of a knock sensor. Further, a central value VMED of a vibration intensity distribution is calculated, and also a ... | 04/08/2008 |
| 7353104 | Signal output unit and electronic control unit A timer module in an ECU has an angle counter and a timer counter. A value counted by the angle counter indicates a crank angle of a crankshaft. Under the control of the termination to output an ignition pulse signal to an igniter, the ECU inverts the level of the i... | 04/01/2008 |
| 7347081 | Knock 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 |
| 7340955 | Capacitive acceleration sensor arrangement The present invention relates to measuring devices used in measuring acceleration, and, more specifically, to capacitive acceleration sensors. The improved sensor arrangement of the invention enables reliable and effective measuring of acceleration, in small capacit... | 03/11/2008 |
| 7310575 | Apparatus for processing sensor signal from knock sensor of internal combustion engine A knock sensor signal processing apparatus for an engine, which performs a series of A/D conversions of a knock sensor signal during each of successive knock judgement intervals to obtain A/D converted values for use in judging if engine knocking is occurring in a c... | 12/18/2007 |
| 7299680 | Knocking 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 |
| 7286924 | Knocking determining apparatus of internal combustion engine A knocking determining apparatus of an internal combustion engine that includes an in-cylinder injector and an intake port injector and that determines knocking based on an output signal of a knock sensor. The knocking determining apparatus includes a knocking deter... | 10/23/2007 |
| 7267115 | Ignition apparatus for an internal combustion engine The ignition apparatus includes an electronic control unit and an igniter. The igniter detects ions resulting from ignition, and sends an ion current output signal to the electronic control unit. The igniter has a waveform shaping circuit and an ion current detectin... | 09/11/2007 |
| 7258106 | Control system for internal combustion engine A control system for an internal combustion engine having fuel injection valves provided in a combustion chamber and an exhaust gas recirculation mechanism. Target maximum cylinder pressure change rates are set according to the operating condition of the engine. The... | 08/21/2007 |
| 7251556 | Knock determination device for internal combustion engine An engine ECU executes a program including a step of calculating coefficient of correlation K that is a value related to a deviation between a vibration waveform and a knock waveform model by comparing the engine's vibration waveform with the knock waveform model st... | 07/31/2007 |
| 7251571 | Methods of diagnosing open-secondary winding of an ignition coil using the ionization current signal In a first embodiment, the present invention is a method of detecting an open secondary winding, including the steps of enabling an integrator, resetting the integrator, detecting an ionization current, integrating the ionization current over a spark window, compari... | 07/31/2007 |
| 7243529 | Knock detecting apparatus for internal combustion engine A waveform knock signal detected by a knock sensor is filtered through a band-pass filter. The detected wave form signal is compared with an ideal reference knock waveform to determine an engine knock. The ideal reference knock waveform is derived on the basis of a ... | 07/17/2007 |
| 7243020 | Knock detection apparatus and knock detection method A knock detection apparatus which is capable of changing a knock control starting time period appropriately so as to prevent erroneous knock determination, to thereby expand a knock control range. A peak value acquisition unit acquires a peak value of a vibration of... | 07/10/2007 |
| 7222607 | DSP-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 |
| 7222606 | Ignition timing control for internal combustion engine An internal combustion engine (1) causes an air/fuel mixture in a cylinder to combust due to ignition by a spark plug (14). The engine controller (50) calculates a crank angle at knock on the basis of an operating state of the engine (1) ... | 05/29/2007 |
| 7213573 | System and method of controlling engine dilution rate using combustion stability measurer derived from the ionization signal This feature of the present invention comprises a system and method of controlling exhaust gas recirculation (EGR) based on a measure combustion stability measure. The combustion stability measure is obtained by determining the integration duration of the engine ion... | 05/08/2007 |
| 7210458 | Device and method for determining pressure fluctuations in a fuel supply system A device and a method for determining pressure fluctuations in a fuel supply system provide two signal filters to enable determining as much information about pressure fluctuations as possible with minimal sensor use. A sensor signal which is characteristic of a pre... | 05/01/2007 |
| 7212909 | Ignition timing control for internal combustion engine An internal combustion engine (1) causes an air/fuel mixture in a cylinder to combust due to ignition by a spark plug (14). The engine controller (50) calculates a temperature and pressure in the cylinder on the basis of the operating state of t... | 05/01/2007 |
| 7201145 | Fuel supply apparatus for internal combustion engine In a fuel supply apparatus for an internal combustion engine including a first fuel injection valve for directly injecting a fuel into a cylinder and a second fuel injection valve for injecting the fuel into an intake manifold, production of deposits in the first fu... | 04/10/2007 |
| 7181338 | Knock determining apparatus for internal combustion engine For each predetermined crank angular interval, an output of a knock sensor is separated into a plurality of frequency components through a plurality of band-pass filters, and peak values of each frequency component are extracted. Then, a mean and a variance of the p... | 02/20/2007 |
| 7178505 | Diesel engine A diesel engine comprising a fuel injection device (9), an EGR device (19), and a control device (26) for controlling the fuel injection device (9) and EGR device (19) so as to realize a premixed combustion in which a mixture is ig... | 02/20/2007 |
| 7146963 | State determination device for internal combustion engine An engine ECU executes a program including the steps of: determining an airflow meter as abnormal when the number of times an injector is determined as abnormal (abnormality determination count C) is greater than a threshold value C(0) in all of a region wher... | 12/12/2006 |
| 7134423 | Ignition diagnosis and combustion feedback control system using an ionization signal This feature of the present invention comprises an ignition diagnostics and feedback control system based upon detected ionization current in an individual cylinder. The system is divided into two subsystems: an ignition diagnostics subsystem and an ignition feedbac... | 11/14/2006 |
| 7079936 | Method and apparatus for sampling a sensor signal In an apparatus, a timing signal outputting unit outputs a timing signal every time interval. The time interval is shorter than a pulse time interval of the pulse signal. A first storage unit stores first information relative to each pulse time interval of the pulse... | 07/18/2006 |
| 7076486 | Method and system for efficiently identifying differences between large files Methods and data structures are disclosed for carrying out identifying differences between large files comprising many lines (or other units of comparison such as rows, words, paragraphs, sentences, etc.). The disclosed methods and data structures facilitate and car... | 07/11/2006 |
| 7055501 | Ignition timing control method and apparatus for internal combustion engine For an internal combustion engine including an in-cylinder injector and an intake port injector, when a request to change a fuel injection ratio to a requested fuel injection ratio is made and a difference between a proper ignition timing value corresponding to the ... | 06/06/2006 |
| 7056165 | Control system for outboard motor The control system establishes an engine warm-up protocol based, at least in part, on elapsed time from engine start. The control system provides a reduced reliance on engine temperature as a basis for determining an appropriate engine idle speed. The control system... | 06/06/2006 |
| 7055372 | Method of detecting cylinder ID using in-cylinder ionization for spark detection following partial coil charging The present feature of the invention comprises a method and apparatus for determining cylinder ID. When a cylinder is compressed, the resistance increases across the spark plug gap. Thus, if a spark coil is only partially charged before activation of the spark, the ... | 06/06/2006 |
| 7051711 | Knock recognition in internal combustion engines with modifications by changing filter characteristics or cylinder specific changes Devices and methods for knock detection and knock control are described, in which, in addition to the customary component parts, the knock-detection circuit has a filter with switchable filter characteristic. The switchover of the filter characteristic, i.e. the shi... | 05/30/2006 |
| 7051575 | Control 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 |
| 7040285 | Knocking control apparatus and knocking control method for internal combustion engine A knocking control apparatus for an internal combustion engine, which is applied to an internal combustion engine including a variable valve mechanism that can vary a valve characteristic of at least one of an intake valve and an exhaust valve, and which changes an ... | 05/09/2006 |
| 7021286 | Ignition timing control for internal combustion engine An internal combustion engine (1) causes an air/fuel mixture in a cylinder to combust due to ignition by a spark plug (14). An engine controller (50) calculates an ignition delay of the gas in the cylinder on the basis of an operational state of... | 04/04/2006 |
