Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7578282 | Apparatus for processing sensor signal from knock sensor of internal combustion engine In a knock sensor signal processing apparatus, a first apparatus which receives an engine knock sensor signal performs A/D conversions of the signal with a predetermined period and transmits successive pluralities of A/D values in parallel, by serial data communicat... | 08/25/2009 |
| 7472687 | System and method for pre-processing ionization signal to include enhanced knock information A system and method for pre-processing an ionization signal to amplify knock information and combining the amplified knock information with the ionization signal to create a knock-enhanced ionization signal is disclosed. In one embodiment, an on-plug integrated ioni... | 01/06/2009 |
| 7395125 | Method and controller for the adaptive control of at least one component of a technical plant The invention relates to a method in which at least one component of a technical plant is controlled by means of a PI controller. The actual value of the regulating parameter is continuously determined during operation of the plant and the amplification factor of th... | 07/01/2008 |
| 7392788 | Device and method for controlling ignition timing of internal combustion engine An engine ECU executes a program including a step of, when an absolute value of a difference between median value V(50) of magnitude values LOG(V), which is obtained by logarithmically converting a magnitude V detected based on a signal sent from a knock sens... | 07/01/2008 |
| 7363142 | Device and method for controlling ignition timing of internal combustion engine An engine ECU executes a program including the steps of: calculating a magnitude value LOG(V) from a magnitude V detected using a knock sensor; calculating a median value V(50) and a standard deviation a of calculated magnitude values LOG(V); calculating a knock det... | 04/22/2008 |
| 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 |
| 7281516 | Ignition timing control device of internal combustion engine An engine ECU executes a program including the steps of: comparing a vibration waveform of an engine and a knock waveform model stored in advance to calculate a correlation coefficient K; prohibiting correction when a correction prohibiting condition of a determinat... | 10/16/2007 |
| 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 |
| 7263430 | Internal combustion engine knock determination device and ignition control system including the same An engine ECU executes a program including the steps of: detecting a waveform of vibration of an engine at a predetermined knock detection gate; determining whether a detected vibration's waveform and a knock waveform model stored in memory match within a predetermi... | 08/28/2007 |
| 7255089 | Engine control device and control method A determination is made as to whether or not knocking is actually occurring inside a combustion chamber (5), and on the basis of the knocking detection result, a knocking-correlated parameter (octane number, alcohol concentration, compression ratio of the eng... | 08/14/2007 |
| 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 |
| 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 |
| 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 |
| 7159565 | Method of controlling ignition timing in internal combustion engine An internal combustion engine includes an in-cylinder injector injecting a fuel into a cylinder and an intake port injector injecting a fuel into an intake port. In the internal combustion engine, when a fuel injection ratio between the in-cylinder injector and the ... | 01/09/2007 |
| 6988483 | Control 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 |
| 6968825 | Control device for spark-ignition engine A control device for a spark-ignition engine, in which a mixture in a combustion chamber is fired by compression ignition in a part-load range under warm-running conditions, includes an EGR controller incorporating a valve operation controller for controlling intern... | 11/29/2005 |
| 6947828 | Knock control system for internal combustion engine A knock control system for an internal combustion engine having a plurality of cylinders. Operation of the engine is switchable between a partial-cylinder operation for operating some of the cylinders and an all-cylinder operation for operating all of the cylinders.... | 09/20/2005 |
| 6912460 | Method 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 |
| 6851411 | Knocking index value calculation device and calculation method thereof A controller (31) of a knocking index value calculation device in a spark ignition engine (1) determines operating conditions of the engine (1), estimates an in-cylinder pressure at a reference crank angle, which is set at a predetermined crank ... | 02/08/2005 |
| 6750798 | Apparatus for processing knock sensor signal A signal-processing apparatus has a digital filter for processing input data from a knock-sensor. The digital filter is designed as an FIR filter characterized by filter coefficients that are equal to values of mince points 0 to 16 obtained based on a ... | 06/15/2004 |
| 6456927 | Spectral knock detection method and system therefor A spectral method, and corresponding system, for knock detection includes acquiring (603) spectral energy associated with vibration caused by a knocking condition from a running engine. Preferably, a sampled data system (105) acquires the spectral energy ... | 09/24/2002 |
| 6246953 | Internal combustion engine knock detection An apparatus and method are provided for detecting knock in a spark ignition internal combustion engine. The engine comprises at least one cylinder with a spark plug, engine condition sensors for sensing engine speed, engine angle and engine noise, and an... | 06/12/2001 |
| 6092015 | Combustion state detecting apparatus for an internal-combustion engine A combustion state detecting apparatus for an internal-combustion engine improves the signal-to-noise ratio of an ionic pulse signal to achieve good interfacing characteristic, high detection accuracy, and high control reliability without adding to cost. ... | 07/18/2000 |
| 5992386 | Method for knock control in combustion engines A method for sorting out false indications of a knocking condition in combustion engines, and in a close loop manner influencing the control measures initiated in order to cease the knocking condition, which method includes obtaining an ionization signal ... | 11/30/1999 |
| 5785020 | Combustion state detecting apparatus for an internal-combustion engine A combustion state detecting apparatus for an internal-combustion engine permits an improved signal-to-noise ratio of a knocking signal with a resultant improved controllability without adding to the load on an electronic control unit (ECU). The combustio... | 07/28/1998 |
| 5623412 | Instantaneous data acquisition and processing system for internal-combustion engine control The control system of the invention is associated with an engine provided with means for measuring one or several parameters including pressures (in the cylinder, induction pressure, exhaust pressure) for each cylinder, acceleration, injection needle lift... | 04/22/1997 |
| 5531200 | Control apparatus for engine An engine control apparatus includes a microcomputer and receives a signal from a signal source which generates a signal containing a control factor. The microcomputer executes a control program in response to the received signal. The engine control appar... | 07/02/1996 |
| 5027772 | Engine knock control system The generation of knocking in an engine is controlled by an engine knock control system, which comprises circuit such as a magneto for generating a reference signal in synchronous with a rotation of the engine and an ignition circuit responsive to the ref... | 07/02/1991 |
| 4793310 | Electronic ignition control apparatus including knocking control In an electronic ignition, e.g., knocking control apparatus, an acceleration sensor is mechanically coupled to an internal-combustion engine to detect a vibration signal containing not only mechanical vibration information but also knocking information. T... | 12/27/1988 |
| 4727841 | System for controlling internal combustion engine using knocking and overtemperature preventing fuel correction In an internal combustion engine where the ignition timing is retarded to avoid knocking and an overtemperature of the engine, a fuel incremental amount is calculated by using a curvilinear function having a positive secondary differential value with resp... | 03/01/1988 |
| 4716873 | Engine control system An ignition timing correcting circuit which retards ignition timing when knock occurs and advances ignition timing when knock does not occur. An optimal ignition timing on which the ignition timing is to be converged is set to a latest ignition timing to ... | 01/05/1988 |
| 4517944 | Ignition timing control for internal combustion engines A method for controlling the ignition timing of internal combustion engines by reducing the amount of correction of ignition timing with each change of direction of the correction. This increases the speed of approach to the approximate optimum ignition t... | 05/21/1985 |
| 4433654 | Knock control device for internal combustion engine A knock control device having a knock detecting means and an ignition timing control means is provided with a temperature sensor for detecting the temperature of the exhaust system of an internal combustion engine. If the knock detecting means detects occ... | 02/28/1984 |
| 4422421 | Combustion knock preventing apparatus for an internal combustion engine A combustion knock detection signal for retarding the ignition timing of the internal combustion engine is disabled upon detection of an unstable condition of the storage battery voltage level. Switching means is provided which is operative in response to... | 12/27/1983 |
| 4393837 | Spark timing control system for an internal combustion engine An ignition spark timing control system for an internal combustion engine capable of controlling the ignition spark advance angle corresponding to a knocking condition of the engine. The spark timing control system includes a means for retarding spark tim... | 07/19/1983 |
| 4377999 | Ignition timing control system for internal combustion engine An acceleration sensor senses mechanical noise components and a knock signal originating from an internal combination engine. The knock signal is separated from the attenuated noise components and compared with a DC voltage due to the latter to form pulse... | 03/29/1983 |
