Kakuya
Hiromu Kakuya, Hitachinaka JP
Patent application number | Description | Published |
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20080281497 | Engine Controller - In an engine controller capable of carrying out spark ignition type combustion and compressed self-ignition type combustion, in order to suppress operation performance deterioration and exhaust performance deterioration at the time of switching a combustion mode from the compressed self-ignition type combustion to the spark ignition type combustion, intake pipe pressure downstream a throttle is quickly reduced by making the throttle opening degree smaller than a target throttle opening degree of the spark ignition type combustion immediately after switching for a certain period during the combustion mode is switched from the compressed self-ignition type combustion to the spark ignition type combustion. As a result, responsiveness of an intake amount at the time of switching the combustion mode from the compressed self-ignition type combustion to the spark ignition type combustion is enhanced, and combustion switching without exhaust deterioration and torque variation is realized. | 11-13-2008 |
20090150052 | Control Apparatus for Spark-Ignition Engine - Disclosed herein is a control apparatus for a spark-ignition engine that is capable of avoiding knocking at the time of high-load operation. With this control apparatus, a residual-gas suction unit or the like is not used, an exhaust gas does not deteriorate due to injection in a compression stroke, and a thermal efficiency also does not decrease. | 06-11-2009 |
20090259387 | Apparatus and method for Controlling a Homogeneous Charge Compression-Ignited Internal-Combustion Engine - In a homogeneous charge compression-ignited internal-combustion engine, based on information regarding the operational state of the engine, a combustion mode switching discriminator selects a homogeneous charge compression-ignited combustion mode if engine operating conditions allow homogeneous charge compression-ignited combustion. If not, the combustion mode switching discriminator selects a spark-ignited combustion mode. Immediately after switching from spark-ignited combustion to homogeneous charge compression-ignited combustion, a combustion mode switching corrector outputs switching correction values for operating quantities for homogeneous charge compression-ignited combustion. The correction values are used to adjust the operating quantities for homogeneous charge compression-ignited combustion, and new operating quantities obtained from the adjustments are output as control quantities from a combustion mode selector. | 10-15-2009 |
20090312936 | Apparatus and Method for Controlling Engine - An engine controller capable of reducing torque fluctuation and the like in change between spark ignition combustion and homogeneous charge compression ignition combustion is provided. Spark ignition burning mode or homogeneous charge compression ignition burning mode is selectively set as burning mode according to the operating state of an engine. In spark ignition burning mode, a spark plug is used. In homogeneous charge compression ignition burning mode, fuel is burned utilizing pressure rise in a combustion chamber in conjunction with the ascent of a piston. The burning mode is changed between these modes. In transition for change between the spark ignition burning mode and the homogeneous charge compression ignition burning mode, the following measure is taken: a period during which the lift amount and/or the valve opening period (IVevent) of an intake valve is made smaller than a set value for the homogeneous charge compression ignition burning mode is provided. | 12-17-2009 |
20120055445 | Control Device for Compressed Self-Ignition Type Internal Combustion Engine - An object is to provide a control device and control method for a compressed self-ignition type internal combustion engine, which can reduce torque variation due to misfire when the air-fuel ratio varies during compressed self-ignition type combustion, and thereby effectively use the potential for reducing fuel consumption. As the combustion mode, a spark-ignition type combustion mode by use of an ignition plug and a compressed self-ignition type combustion mode which utilizes a pressure increase in a combustion chamber in association with upward movement of piston are selectively set depending on an operational state of the engine, and when the air-fuel ratio in the compressed self-ignition type combustion mode is rich, a regional upper limit of the compressed self-ignition type combustion region is changed toward the lower engine torque side, and when the air-fuel ratio is lean, the regional upper limit is changed toward the higher engine torque side. | 03-08-2012 |
20130041511 | Solar Power System and Control System - In a case in which a local solution to current-voltage characteristics is generated by way of a partial shade, it has been difficult to perform control for causing a solar cell to operate at a maximum power point efficiently in terms of power and at a low cost. During steady state operation, an MPPT control unit | 02-14-2013 |
20140117762 | Battery System - An objective of the invention is to deal with difference of the internal resistance of batteries. | 05-01-2014 |
Hiromu Kakuya, Tokyo JP
Patent application number | Description | Published |
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20140077595 | BATTERY ENERGY STORAGE SYSTEM - A battery energy storage system including: a power control circuit group provided by electrically connecting a plurality of power control circuits in series with each other on a load connection terminal side, the plurality of power control circuits each having load connection terminals electrically connected with a load and having power supply connection terminals electrically connected with a power supply, and controlling power supplied to the load side connection terminals or the power supply side connection terminals and outputting the power from the power supply side connection terminals or the load side connection terminals; an electric energy storage device including a plurality of capacitors, a control device for controlling operation of the plurality of power control circuits; and a power usage rate changing section provided so as to correspond to each of the plurality of power control circuits. | 03-20-2014 |
Koji Kakuya, Ube-Shi JP
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20080314839 | Iron composite particles for purifying soil or ground water, process for producing the same, purifying agent containing the same, process for producing the purifying agent and method for purifying soil or ground water - Iron composite particles for purifying soil or ground water, comprise α-Fe and magnetite, and having a ratio of a diffraction intensity D | 12-25-2008 |
Takumi Kakuya, Tokyo JP
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20140071559 | READ/WRITE APPARATUS AND READ/WRITE METHOD - According to one embodiment, a read/write apparatus includes a receiver and a refresh module. The receiver receives a write command requesting a write to a magnetic disk. The refresh module refreshes, when a first area of the magnetic disk includes a second area corresponding to the write command, data written in a third area, the third area being an area obtained by excluding the second area from the first area. | 03-13-2014 |
Takumi Kakuya, Ebina-Shi JP
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20150138667 | MAGNETIC DISK DEVICE - According to one embodiment, there is provided a magnetic disk device including a magnetic disk, a storage unit, and a control unit. The magnetic disk includes a recording region. The storage unit is configured to store a value according to number of accesses to each of a plurality of regions obtained by dividing of the recording region of the magnetic disk in association with each of the plurality of regions. The control unit is configured to count a value according to the number of accesses to each of a plurality of regions in a count step unit that is a value determined according to an elapsed time from occurrence of a specific situation and is a value counted per unit access, and to update the value stored in the storage unit. | 05-21-2015 |
Yuuji Kakuya, Okazaki-Shi JP
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20110256841 | Wireless communication apparatus having automatic antenna tuning function - A matching circuit, connected to a receiving antenna and to the input of a receiving circuit, incorporates a variable capacitor that is adjustable for tuning the resonance frequency of the antenna to a desired reception frequency. In an automatic tuning mode of operation, an oscillator signal of different frequency from the reception frequency is applied to induce resonance of the antenna and matching circuit, and the variable capacitor is adjusted until an output signal level from the receiving circuit attains a predetermined value which has been stored beforehand in a memory and which corresponds to a condition whereby the antenna resonance frequency corresponds to the reception frequency and impedance matching exists between the antenna and receiving circuit. | 10-20-2011 |
20110287732 | Wireless communication apparatus - In a wireless communication apparatus, when a first switch electrically connects a second antenna to an impedance matching circuit and a second switch electrically connects a first antenna to a reception circuit, a frequency signal output from an oscillator of the reception circuit is received by the second antenna and applied to the impedance matching circuit. Then, a controller controls the impedance of the impedance matching circuit so as to bring a RSSI voltage output from a signal strength detection circuit of the reception circuit into agreement with a reference RSSI voltage, thereby bringing the reference frequency of the first antenna into agreement with a reference frequency. | 11-24-2011 |
Yuuji Kakuya, Okazaki-City JP
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20090014228 | Collision detector - A collision detector includes a deformable portion and a planar sensor accompanied by a process circuit and a collision determination unit. The deformable portion is configured to be deformed on a collision on an object. The planar sensor has a planar coil formed as a planar winding of winding wire to be deformed along the deformation of the deformable portion. The process circuit generates an electric signal that is in proportion to a self inductance Ls of the planar coil. The collision determination unit determines whether the object collided with the deformable member based on the change of the electric signal. | 01-15-2009 |
20100245192 | Antenna apparatus - An antenna apparatus includes: a ground substrate; and a loop antenna having first and second polarized wave surfaces, which are perpendicular to the substrate. The substrate provides an antenna, which is excited and vibrated together with the loop antenna. The antenna has a first polarized wave component in parallel to the first polarized wave surface and a second polarized wave component in parallel to the second polarized wave surface. A polarized wave ratio between the first polarized wave component and the second polarized wave component in the substrate is substantially equal to a polarized wave ratio between the first polarized wave surface and the second polarized wave surface in the loop antenna. | 09-30-2010 |