Patent application number | Description | Published |
20100070668 | INTERRUPT CONTROL APPARATUS, INTERRUPT CONTROL SYSTEM, INTERRUPT CONTROL METHOD, AND INTERRUPT CONTROL PROGRAM - An interrupt control unit provides controls on an interrupt from an accelerator to a CPU based on a packet transmitted to or received from a controlled object. The interrupt control unit includes: a storage part for storing therein an interrupt control timing table in which a condition of switching a mode of the interrupt control is described; and an interrupt control mode switching part for switching the mode of the interrupt control to the CPU between a permission mode and a mask mode, based on the interrupt control timing table in the storage part. | 03-18-2010 |
20110184533 | CONTROL NETWORK SYSTEM, MASTER APPARATUS, CONTROL DATA PROCESSING METHOD, AND CONTROL DATA PROCESSING PROGRAM - A control computer as a master apparatus in a control network system includes a packet generation unit. The packet generation unit: selects a control command for writing a data from among packet generation information; references the packet generation information for each of the selected control command; and includes a data for write which is read from an address in a storage section corresponding to the each control command, in a control packet to generate the control packet. A communication unit transmits the generated control packet to a controlled object as a slave device. | 07-28-2011 |
20110205886 | INFORMATION PROCESSOR AND CONTROL NETWORK SYSTEM - An information processor capable of ensuring time synchronization accuracy, ensuring EtherCAT command consistency, and easily developing the software based on a 2-port configuration even when a communication path error occurs includes: an arithmetic section; at least two communication sections each including a transmission section and a reception section; and a redundant communication control section that controls a communication path between the arithmetic section and the communication section. The redundant communication control section includes: a communication path state determination section that determines a network path state; and a redundant path switching section that switches connection between the arithmetic section and at least two communication sections. The network provides a logical ring topology for a packet communication path. The redundant path switching section functions based on the communication path state determined by the communication path state determination section and changes a connection path between the communication sections and a communication path between the communication section and the arithmetic section. | 08-25-2011 |
20120057479 | COMMUNICATION CONTROL UNIT AND COMMUNICATION CONTROL SYSTEM - A communication control unit and a communication control system are provided in which control devices can synchronously operate. In a communication control system in which a communication control unit and multiple control devices having an actuator to operate a control target are connected via a network, the communication control unit provides a control command to the control devices, synchronizes times of the communication control unit and the control devices, obtains communication delays relative to the control devices, collects control start times of the control devices, obtains a time by subtracting the control start time from a predetermined time as a start time of the control device, calculates a time obtained by subtracting the communication delay from the start time for each control device, and transmits the control command to the control devices before the earliest time of the calculated times. | 03-08-2012 |
Patent application number | Description | Published |
20080317971 | METHOD FOR MANUFACTURING LIQUID DISCHARGE HEAD - A method for manufacturing a liquid discharge head including a flow path forming member to form a flow path communicating with a discharge port for discharging liquids includes forming an organic material layer on a substrate, applying a soluble resin on the organic material layer to form a resin layer, patterning the resin layer to form a pattern with a shape of the flow path, forming a cover layer as the flow path forming member on the pattern, forming the discharge port to expose a part of the pattern from the cover layer, eluting the pattern from the discharge port to form the flow path, irradiating a substance sticking to a surface of the flow path forming member on which the discharge port is formed with ultraviolet light, wherein the substance contains at least the organic material, and removing the sticking substance. | 12-25-2008 |
20090007428 | METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD - A method of manufacturing a liquid discharge head including a plurality of passages on a substrate, the passages communicating with a plurality of discharge ports configured to discharge liquid. The method includes the step of forming first to fourth patterns, the first pattern having a shape of one passage of the passages, the second pattern having a shape of other passage of the passages, the third pattern being formed near the first pattern, the fourth pattern being formed near the second pattern, the first to fourth patterns being formed on the substrate. The method also includes coating the substrate with a cover layer covering the first to fourth patterns, removing the first pattern to form the one passage, and removing the second pattern to form the other passage. | 01-08-2009 |
20090303289 | LIQUID DISCHARGE RECORDING HEAD AND RECORDING APPARATUS - A liquid discharge recording head includes a flow passage forming member having discharge ports and a flow passage, the discharge ports configured to discharge droplets, the flow passage communicating with the discharge ports. The flow passage forming member also has a first opening and a second opening, the first opening provided at a surface of the flow passage forming member with the discharge ports, the second opening causing the inside of the first opening to communicate with the outside of the flow passage forming member through a communication passage. | 12-10-2009 |
20100147793 | METHOD FOR PRODUCING LIQUID DISCHARGE HEAD - The present invention provides a method for producing a liquid discharge head including a silicon substrate having, on a first surface, energy generating elements, and a supply port penetrating the substrate from the first surface to a second surface, which is a rear surface of the first surface of the substrate. The method includes the steps of: preparing the silicon substrate having a sacrifice layer at a portion on the first surface where the ink supply port is to be formed and an etching mask layer having a plurality of openings on the second surface, the volume of a portion of the sacrifice layer at a position corresponding to a portion between two adjacent said openings being smaller than the volume of a portion of the sacrifice layer at a position corresponding to the opening; etching the silicon substrate from the plurality of openings and etching the sacrifice layer. | 06-17-2010 |
20100323526 | METHOD OF PROCESSING SILICON SUBSTRATE AND METHOD OF MANUFACTURING SUBSTRATE FOR LIQUID DISCHARGE HEAD - A method of processing a substrate including the following steps: providing a silicon substrate that has an etching mask layer with an opening portion at a first surface thereof and has plane orientation of {100} with the surface of the silicon being exposed from the opening portion; preparing a recessed portion that faces from the first surface to a second surface, which is an opposite surface of the first surface, in the opening portion of the silicon substrate; and forming a penetration port that passes through the first surface and the second surface of the silicon substrate by executing crystalline anisotropic etching in the silicon substrate using an etching liquid in which an etching rate for etching a (100) surface of silicon is higher than an etching rate for etching a (110) surface of silicon, from the recessed portion of the silicon substrate toward the second surface. | 12-23-2010 |
20110107598 | LIQUID EJECTION HEAD AND METHOD FOR MANUFACTURING LIQUID EJECTION HEAD - A liquid ejection head and a method of forming the same. The liquid ejection head includes a substrate, an ejection port, a liquid channel, and a supply port. The substrate has, above one side thereof, an energy generating element configured to generate energy used to eject liquid. The ejection port, from which a liquid is ejected, is located at a position corresponding to the energy generating element. The liquid channel communicates with the ejection port and penetrates the substrate from the one side to another side of the substrate. The supply port communicates with the liquid channel. The substrate has a projecting layer extending inward of an inner peripheral portion of an opening in the supply port in the one side, and the projecting layer and the energy generating element are formed of the same material. | 05-12-2011 |
20110183448 | LIQUID COMPOSITION, METHOD OF PRODUCING SILICON SUBSTRATE, AND METHOD OF PRODUCING LIQUID DISCHARGE HEAD SUBSTRATE - A liquid composition used to carry out crystal anisotropic etching of a silicon substrate provided with an etching mask formed of a silicon oxide film with the silicon oxide film used as a mask includes cesium hydroxide, an alkaline organic compound, and water. | 07-28-2011 |
20120058578 | METHOD OF MANUFACTURING A SUBSTRATE FOR LIQUID EJECTION HEAD - Provided is a method of manufacturing a substrate for liquid ejection head, including: forming a groove portion by etching on one surface side of a silicon substrate, the groove portion being formed so as to surround a portion at which a liquid supply port is to be formed on an inner side of the groove portion; forming a protective layer on the one surface side of the silicon substrate, the protective layer being formed inside the groove portion and on an outer side of the groove portion; and forming the liquid supply port by subjecting the silicon substrate to crystal anisotropic etching treatment with use of the protective layer as a mask. | 03-08-2012 |
20120088317 | PROCESSING METHOD OF SILICON SUBSTRATE AND PROCESS FOR PRODUCING LIQUID EJECTION HEAD - A processing method of a silicon substrate, including forming on a back surface of a silicon substrate an etching mask layer having an opening portion, measuring a thickness of the silicon substrate, irradiating the opening portion in the etching mask layer with laser from the back surface of the silicon substrate to form in the silicon substrate a modified layer with a thickness that is varied according to the measured thickness of the silicon substrate, carrying out anisotropic etching with regard to the silicon substrate having the modified layer formed therein to form in the back surface a depressed portion which does not pass through the silicon substrate and which has a bottom surface in the silicon substrate, and carrying out dry etching in the depressed portion to form a through-hole passing from the bottom surface of the depressed portion to a front surface of the silicon substrate. | 04-12-2012 |
20120199550 | METHOD OF PRODUCING LIQUID EJECTION HEAD - Provided is a method of producing a liquid ejection head substrate, the method including, in sequence; grinding a second surface of a silicon substrate, which is an opposite surface of a first surface on which a function element is formed, polishing the ground second surface, etching the polished second surface by reactive ion etching using ion incident energy, forming an etching mask on the second surface after the reactive ion etching, and forming a liquid supply port by subjecting the silicon substrate to wet etching using the etching mask. | 08-09-2012 |
20120267342 | METHOD OF PRODUCING SUBSTRATE FOR LIQUID EJECTION HEAD - A substrate for a liquid ejection head, including: forming a sacrifice layer on a first surface of a silicon substrate in a region in which a liquid supply port is to open, the sacrifice layer containing aluminum which is selectively etched with respect to the silicon substrate; forming an etching mask on a second surface which is a rear surface of the first surface of the silicon substrate, the etching mask having an opening corresponding to the sacrifice layer; a first etching step of etching the silicon substrate by using the etching mask as a mask and by using a first etchant containing 8 mass % or more and less than 15 mass % of tetramethylammonium hydroxide; and after the first etching step, a second etching step of removing the sacrifice layer by using a second etchant containing 15 mass % or more and 25 mass % or less of tetramethylammonium hydroxide. | 10-25-2012 |
20120289055 | LIQUID COMPOSITION, METHOD OF PRODUCING SILICON SUBSTRATE, AND METHOD OF PRODUCING LIQUID DISCHARGE HEAD SUBSTRATE - A liquid composition used to carry out crystal anisotropic etching of a silicon substrate provided with an etching mask formed of a silicon oxide film with the silicon oxide film used as a mask includes cesium hydroxide, an alkaline organic compound, and water. | 11-15-2012 |
20130139388 | METHOD FOR MANUFACTURING LIQUID EJECTION HEAD SUBSTRATE - A method for manufacturing a liquid ejection head substrate, including: (1) a step for etching a substrate, which has an energy generating element at a side of a first surface, from a side of a second surface, which is a surface on the opposite side from the first surface, thereby to form at a time at least a part of a liquid supply port and a recess along a cutting section of the substrate; (2) a step for irradiating a laser beam toward the side of first surface from the etched surface of the recess so as to form a reformed portion inside the substrate; and (3) a step for cutting the substrate at the reformed portion. | 06-06-2013 |
20130316473 | METHOD OF PROCESSING INKJET HEAD SUBSTRATE - A method of processing an inkjet head substrate includes, in series, a step of forming a barrier layer on a substrate and forming a seed layer on the barrier layer, a step of forming a resist film on the seed layer and patterning the resist film such that the resist film has an opening corresponding to a wiring section configured to drive ink discharge energy-generating elements, a step of forming the wiring section in the opening of the patterned resist film, a step of removing the resist film, a step of laser-processing a surface of the substrate, a step of forming an ink supply port by anisotropically etching the substrate, and a step of removing the barrier layer and the seed layer. | 11-28-2013 |
20140024148 | METHOD OF MANUFACTURING SUBSTRATE OF LIQUID EJECTION HEAD - A method of manufacturing a substrate of a liquid ejection head including: forming a plurality of recesses in a silicon wafer; etching the silicon wafer with etchant to form a depression and a plurality of through holes formed from the plurality of the recesses in the depression; and manufacturing a plurality of substrates of the liquid ejection head from the silicon wafer by dividing the silicon wafer on the basis of through holes. | 01-23-2014 |
20140212997 | PROCESS FOR PRODUCING SUBSTRATE FOR LIQUID EJECTION HEAD AND PROCESS FOR PROCESSING SILICON SUBSTRATE - A process for producing a substrate for a liquid ejection head in which a depressed portion is formed on a second surface that is a surface opposite to a first surface of a silicon substrate having an element formation region on the first surface with a peripheral side region left, the process including the steps of (1) forming an etching mask layer covering the second surface of the silicon substrate; (2) subjecting the etching mask layer and the silicon substrate to laser abrasion processing to form a pattern opening that does not pass through the silicon substrate; and (3) performing a wet etching process to the silicon substrate where the pattern opening is formed from a side of the second surface to form the depressed portion. The depressed portion is formed over a center side region including a position corresponding to the element formation region. | 07-31-2014 |
20140256069 | METHOD FOR MANUFACTURING LIQUID DISCHARGE HEAD - A method for manufacturing a liquid discharge includes a process of forming a plurality of blind holes extending from a first surface of the silicon substrate toward a second surface which is a surface opposite to the first surface in the silicon substrate and a process of subjecting the silicon substrate in which the plurality of blind holes are formed to anisotropic etching from the first surface to form a liquid supply port in the silicon substrate, in which, in the process of forming the liquid supply port, the silicon in a region sandwiched by the plurality of blind holes when the silicon substrate is seen from the second surface side is left without being removed by the anisotropic etching to use the left silicon as a beam. | 09-11-2014 |
20160082731 | LIQUID EJECTION HEAD SUBSTRATE, METHOD OF MANUFACTURING THE SAME, AND METHOD OF PROCESSING SILICON SUBSTRATE - The wall of each supply path formed in a silicon substrate has such a shape that a plurality of regions distinguished from each other due to different inclinations to a first surface of the silicon substrate are connected to each other between the first surface and a second surface of the silicon substrate and the width of the supply path is maintained or expands from the first surface to second surface of the silicon substrate. An internal opening is formed by one of the regions that is most steeply inclined to the first surface of the silicon substrate. A region reducing the squeezing of an adhesive into the internal opening is placed between the internal opening and the second surface of the silicon substrate. | 03-24-2016 |
Patent application number | Description | Published |
20130308078 | 3D DISPLAY DEVICE AND 3D DISPLAY SYSTEM - Provide is a 3D display device and a 3D display system having reduced crosstalk and reduced color shift generating in a diagonal direction during white display. A 3D display device comprising: a liquid crystal cell for image display; a first polarizing film and a polarization-converting liquid crystal cell in this order in front of the liquid crystal cell for image display; at least one retardation layer between the polarization-converting liquid crystal cell and the first polarizing film and/or in front of the polarization-converting liquid crystal cell, the at least one retardation layer comprising a polymer film or consisting of a polymer film, wherein the polymer films have a retardation Re (550) in plane at a wavelength of 550 nm of −30 to 100 nm and a retardation Rth (550) in the thickness direction at a wavelength of 550 nm of 50 to 180 nm. | 11-21-2013 |
20140184992 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes first and second polarizers with absorption axes orthogonal to each other; first and second substrates between the first and second polarizers and at least one of which has a transparent electrode; and a twisted-nematic liquid crystal cell disposed between the first and second substrates, wherein a light scattering film is provided at a viewing side of the first and second polarizers and includes a support member and a liquid crystal layer composed of a liquid crystal compound, wherein the pitch of the liquid crystal compound ranges between 0.35 μm and 3 μm and is oriented at 45° relative to a liquid-crystal direction of the liquid crystal display device, wherein the liquid crystal layer has a thickness between 0.17 μm and 10 μm, and wherein a weighted scattering area ratio of a goniophotometer scattering profile of the light scattering film satisfies the following expression: | 07-03-2014 |
20150212368 | LIQUID CRYSTAL DISPLAY - There is provided a liquid crystal display including: a liquid crystal cell in which a liquid crystal layer is installed between two glass substrates; polarizing plates on both surfaces of the liquid crystal cell; and a backlight at a rear side of the liquid crystal cell, which is a non-visual side, wherein in a polarizing plate at a front side of the liquid crystal cell, which is a visual side, a difference in a moisture content of the polarizing plate at the front side under a specific condition in elapse of time is 0.01% or more and 3.0% or less. | 07-30-2015 |
20150330602 | WAVE LENGTH CONVERSION MEMBER, BACK LIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE, AND QUANTUM DOT-CONTAINING POLYMERIZABLE COMPOSITION - A wavelength conversion member including a wavelength conversion layer comprising a quantum dot, wherein the wavelength conversion layer includes an organic matrix, and the organic matrix contains a polymer and one or more of compounds selected from the group consisting of compounds represented by general formula (1) and the like; and a quantum dot-containing polymerizable composition containing a quantum dot, a radical polymerizable compound, and one or more of compounds selected from the group consisting of compounds represented by general formula (1) and the like are provided. | 11-19-2015 |
20160077259 | LIGHT EMITTING SCREEN AND DISPLAY APPARATUS - The light emitting screen of the present invention includes: a blue light emitting layer emitting blue light by being excited with first excitation light; a green light emitting layer which is disposed on the blue light emitting layer and emits green light by being excited with second excitation light; a red light emitting layer which is disposed on the green light emitting layer and emits red light by being excited with third excitation light; a first selective reflection layer which is disposed between the blue light emitting layer and the green light emitting layer; and a second selective reflection layer which is disposed between the green light emitting layer and the red light emitting layer, wherein the blue light emitting layer, the green light emitting layer, and the red light emitting layer contain quantum rods or quantum dots. | 03-17-2016 |
Patent application number | Description | Published |
20090197526 | IMAGE COMMUNICATION APPARATUS - An image communication apparatus which can keep any deterioration in picture quality of an image down to the minimum level and which can perform transmission of an image signal of one frame within a predetermined time even in the case where the communication state becomes poor is provided. An imaging module | 08-06-2009 |
20100328322 | IMAGE PROCESSING APPARATUS - An image processing apparatus includes an image processing block, a plurality of control blocks, and a plurality of register sets. The image processing block carries out a specific process based on input setting data. Each of the plurality of control blocks controls the specific process of the image processing block independently. The plurality of register sets are used in data communication between each of the plurality of control blocks and the image processing block. When any one of the plurality of control blocks is controlling the specific process of the image processing block, each of the remaining control blocks performs data communication with the image processing block using the corresponding register set. | 12-30-2010 |
20120042110 | BUS BANDWIDTH MONITORING DEVICE AND BUS BANDWIDTH MONITORING METHOD - A bus bandwidth monitoring device may include a buffer unit that is connected to a common bus, the buffer unit storing data that has been input via the common bus, a processing unit that performs predetermined processing based on the data stored in the buffer unit, and a detection unit that detects a bandwidth of data transmitted through the common bus based on a state of data transaction between the buffer unit and the processing unit. | 02-16-2012 |
20120042111 | BUS BANDWIDTH MONITORING DEVICE AND BUS BANDWIDTH MONITORING METHOD - A bus bandwidth monitoring device may include a buffer unit that is connected to a common bus, the buffer unit storing data that has been input via the common bus, a processing unit that performs predetermined processing based on the data stored in the buffer unit, and a detection unit that detects a bandwidth of the data of the common bus based on a state of storage of the data that is input to the buffer unit through the common bus. | 02-16-2012 |
20120144150 | DATA PROCESSING APPARATUS - A data processing apparatus may include a data acquisition unit, a plurality of buffer units including a storage capacity and an additional storage capacity, a valid data amount calculation unit that calculates an amount of valid data and outputs valid data information indicating whether or not the data is valid, and a data write control unit that controls writing of the data to one of the plurality of buffer units. The valid data amount calculation unit may determine the number of the units based on the calculated amount of valid data and the additional storage capacity. The data acquisition unit may acquire data included in the units, the number of which is determined by the valid data amount calculation unit. The data write control unit may control whether or not to write the data to one of the plurality of buffer units based on the valid data information. | 06-07-2012 |
20120203942 | DATA PROCESSING APPARATUS - A data processing apparatus may include a data acquisition unit, a buffer unit that includes a plurality of division buffers, a valid data area determination unit that calculates an area of valid data, a buffer state management unit that manages whether or not the data is stored in the division buffer, a data write control unit that writes data of a unit of the storage capacity of the division buffer, which at least includes data indicated to be valid data by the valid data information within the data, to the division buffer in which no data is stored, the division buffer being selected based on the management information, and a data read control unit that reads data indicated to be valid data by the valid data information from the division buffer in which data is stored, the division buffer being selected based on the management information. | 08-09-2012 |
20140293090 | IMAGE PROCESSING APPARATUS - An image processing apparatus includes: an image processing section that receives input images of a plurality of frames, divides an image of each input frame into a plurality of blocks for each image of the frame, and generates an image corresponding to each frame by performing predetermined image processing on each division block; and an overlap width control section that separately saves overlap width data to be used in each of a plurality of image processing operations by the image processing section for generating the image corresponding to each frame for each piece of the overlap width data corresponding to each image processing operation when image data included in an overlap width area in which block areas overlap within the image of each frame is saved as overlap width data, and switches the overlap width data to be used when the image processing section performs each image processing operation. | 10-02-2014 |
Patent application number | Description | Published |
20090090678 | FUEL FILTER DEVICE - A filter element is formed from a filter material configured to capture a foreign substance in fuel. A lower case is attachable to and detachable from a bottom portion of a housing in a movable direction. The housing and the lower case are configured to accommodate the filter element. The filter element defines a passage extending through the filter element in the movable direction. The passage is configured to accommodate the component. The component is configured to be attached to and detached from the housing together with the lower case when the lower case is attached to and detached from the housing. | 04-09-2009 |
20090165752 | FUEL FEED APPARATUS - A feed pump pumps fuel from a fuel tank. A filter portion includes a filter element for removing foreign matter contained in the fuel discharged from the feed pump. A high-pressure pump pumps the filtered fuel to the internal combustion engine. A return passage is connected with a passage between the filter element and the high-pressure pump for partially returning the filtered fuel to the fuel tank. A priming pump portion has an inlet port, which is connected with the return passage, and an outlet port, which is connected with the filter element. The priming pump portion draws fuel from the fuel tank to supply the fuel to the filter element when being operated. | 07-02-2009 |
20090277424 | FUEL SUPPLY APPARATUS - In a fuel supply apparatus, a fuel pump draws fuel from a fuel tank, and discharges the fuel to a high-pressure fuel system. A filter unit has a filter element located on a downstream side of the fuel pump to remove foreign matters contained in the fuel discharged from the fuel pump. A jet pump has a nozzle that is installed in a fuel supply passage between the fuel pump and the filter element. The nozzle injects the fuel to a downstream side of the nozzle in the fuel supply passage. The introducing passage introduces excessive fuel from the high-pressure fuel system to the downstream side of the nozzle. | 11-12-2009 |
20090283074 | FUEL SUPPLY APPARATUS - An ECU reduces a fuel flow rate discharged from an electric pump to the filter when a fuel temperature and a fuel pressure in the filter detected by a sensor portion drop. Since a mechanical pump continues to be driven without respect to the fuel quantity discharged from the electric pumps when the fuel flow rate discharged from the electric pump is decreased, a suction pressure is generated at an inlet of the filter. The fuel in a recirculation passage is introduced into the filter through a branch passage. As the result, relatively high temperature fuel is introduced into the filter to melt a solidified fuel causing a clogging of the filter. | 11-19-2009 |
20110049041 | FUEL FILTER ELEMENT - A fuel filter element includes a first layer and a second layer. The first layer has a first pore size. The second layer is stacked on the first layer and has a second pore size smaller than the first pore size. The second layer is a filter paper made of a fiber including a refined fiber and an unrefined organic fiber. The refined fiber is a cellulose fiber treated with a refining process and fibrillated so as to have a freeness within a range from 120 ml to 180 ml. The unrefined organic fiber has a fiber diameter within a range from 8 μm to 13 μm and is not treated with a refining process. The refined fiber accounts from 70 weight % to 85 weight % of the fiber and the unrefined organic fiber accounts for the remain. | 03-03-2011 |
20120204833 | FUEL INJECTION DEVICE - A fuel injection device includes a fuel supply pump, an injector, a filter, a circulation flow passage, an introduction valve, a circulation flow valve and a check valve. The injector supplies fuel discharged from the fuel supply pump to an engine, and the filter is arranged upstream of the fuel supply pump. The circulation flow passage introduces high-pressure fuel into the filter from a high-pressure flow passage provided between the fuel supply pump and the injector by opening of the introduction valve. The circulation flow valve is provided in the circulation flow passage and allows or interrupts inflow of fuel from the circulation flow passage into the filter depending on a fuel temperature. The check valve is provided upstream of the circulation flow valve to prevent backflow, and opens when a fuel pressure in the circulation flow passage is higher than a predetermined pressure. | 08-16-2012 |
20150360152 | FUEL-FILTER ABNORMALITY DETECTION DEVICE - A fuel-filter abnormality detection device is used for a subject filter provided in a fuel supply device of an engine to filtrate a fuel. The fuel-filter abnormality detection device includes a first filter attachable downstream of the subject filter in fuel flow. A filtration capacity of the first filter is smaller than a filtration capacity of the subject filter, and the first filter traps a foreign matter on a downstream side of the subject filter to cause a change in fuel pressure indicating an abnormality of the subject filter. The fuel-filter abnormality detection device may include a bypass passage through which the fuel bypasses the first filter, a bypass control valve configured to allow the fuel to flow through the bypass passage when the abnormality of the subject filter is detected, and a second filter filtrating the fuel flowing through the bypass passage. | 12-17-2015 |