baber/WOPTO huggingface dataset:
Patent JP-2005512502-A (JP)
Title: アスペルギルス・オクラセウス（Ａｓｐｅｒｇｉｌｌｕｓｏｃｈｒａｃｅｕｓ）１１アルファ水酸化酵素および酸化還元酵素
IPC: C12N3/00
Filed: 2001-10-26
Abstract: 本発明は、アスペルギルス・オクラセウス胞子のｍＲＮＡから生成したｃＤＮＡライブラリーより単離した、新規チトクロムＰ４５０様酵素（アスペルギルス・オクラセウス）に関する。１１アルファ水酸化酵素をコードするｃＤＮＡを、電子供与体としてヒト酸化還元酵素をコードするｃＤＮＡと、スポドプテラ・フルギペルダ（Ｓｆ−９）昆虫細胞で同時発現すると、該水酸化酵素は、ＨＰＬＣ解析で測定されるように、ステロイド基質４−アンドロステン−３，１７−ジオン（ＡＤ）から１１アルファ−ヒドロキシ−ＡＤへの変換を触媒するのに成功した。本発明はまた、相補体、相同体および断片を含む、これらのｃＤＮＡに関連するか、またはこれらに由来する核酸分子、並びにこれらの核酸分子を用いて、例えばそのポリペプチドおよび断片を生成する方法にも関する。本発明はまた、Ａ．オクラセウス１１アルファ水酸化酵素および酸化還元酵素を認識する抗体の生成、並びにこれらの抗体を用いて、それぞれ非修飾および形質転換宿主細胞内の、これらの天然および組換えポリペプチドの存在を検出する方法にも関する。本発明はまた、異種宿主細胞において、ヒトまたはアスペルギルス酸化還元酵素と別個に、または該酵素と組み合わせて、アスペルギルス１１アルファ水酸化酵素遺伝子を発現して、ステロイド基質の１１アルファヒドロキシ対応物への生物変換を促進する方法も提供する。
Patent JP-2004516134-A (JP)
IPC: A62D101/43
Filed: 2001-12-19
Abstract: In a method for reducing the leaching of oxyanion forming elements, in particular chromium, from materials containing environmentally noxious constituents, especially from incineration residues, especially flue gas cleaning products from waste incineration, in particular fly ash, the said materials are admixed with an aqueous medium such as water in a closed container in a liquid-solid ratio sufficient to cause reducing conditions capable of stabilizing oxyanion forming elements, in particular chromium, due to oxidation of metallic Al, Zn, Fe, and other free metals present in the said materials.
Patent JP-2004521098-A (JP)
Title: プロコラ−ゲンｃ−プロテイナ−ゼ阻害剤として有用な３−オキサ（ジア）ゾリルプロパノヒドロキサム酸
IPC: C07B61/00
Filed: 2001-12-07
Abstract: 【課題】式中、本明細書で定義されている置換基であり、ＰＣＰにより仲介される病態を治療することに有用な、プロコラーゲン  Ｃ−プロテイナーゼ（ＰＣＰ）インヒビタ−としての３−オキサ（ジア）ゾリルプロパノヒドロキサム酸および、それらの塩、溶媒和物およびプロドラッグ、を提供する。 式（Ｉ）の化合物：
Patent JP-2004519224-A (JP)
IPC: C12P19/00
Filed: 2000-12-29
Abstract: The invention relates to ginsenoside glycosidases which hydrolyzes ginsenosides having higher contents in ginsengs so as to prepare rare ginsenosides with high physioloigical activity. Said ginsenoside glycosidases are derived from microorganism cultures, ginseng plants, almonds, wheat brans, malts and animal livers etc., and are categoried to four types depending on their capability of hydrolyzing the sugar moieties of ginsenosides, namely, ginsenoside glycosidase I, ginsenoside glycosidase II, ginsenoside glycosidase III and ginsenoside- alpha -rhamnosidase. The invention also relates to the uses of the ginsenoside glycosidases in preparing rare ginsenosides.
Patent JP-2004518338-A (JP)
Title: 符号化されたビデオの鮮鋭度を向上する方法及びシステム
IPC: H04N5/208
Filed: 2001-12-14
Abstract: 有用性メトリックが、符号化歪みを増加すること無しに、どのくらい画素が向上されうるかを計算する、符号化されたビデオに鮮鋭度向上を提供する、システム（即ち、方法、装置及び、コンピュータが実行可能な処理ステップ）である。種々の異なる向上アルゴリズムがメトリックと共に使用されることが可能なように、有用性メトリックが向上アルゴリズムから分離されている。
Patent JP-2005532575-A (JP)
Title: パイロット向けインターネット実習システムおよび方法
IPC: G09B9/08
Filed: 2001-09-10
Abstract: 様々な実施形態の例によれば、飛行シミュレータ用コンテンツ提供システムは、デジタル・ネットワークへのインタフェースを有するゲートウェイと、飛行シミュレータ・プログラムのサーバ部分を実行する少なくとも１つのホスト・コンピュータ・システムとを適切に含み、その結果、ゲートウェイが、デジタル・ネットワークを介して飛行シミュレータ・プログラムのクライアント部分を実行するユーザからサーバ部分への接続要求を受け取るように動作可能であり、さらに、ゲートウェイが、飛行シミュレータの主な処理がサーバ部分で行われ、且つインタフェースの更新がクライアント部分で処理されるように、クライアント部分とサーバ部分との間の接続を確立するように動作可能である。
Patent JP-2004533494-A (JP)
IPC: C08G63/82
Filed: 2002-02-22
Abstract: The invention relates to a method for preparing polyesters A containing several mid-chain free acid functions by ring-opening polymerisation in the presence of a chain initiator: the benzyl diester of the tartaric acid, the phenyl radical of which is optionally substituted. A: aliphatic based on cyclic esters such as lactides and glycolides.
Patent JP-2004525025-A (JP)
Title: 液圧式パワーステアリングシステム用のダンパ弁
IPC: F16K17/04
Filed: 2002-03-07
Abstract: 【解決手段】液圧式パワーステアリングシステム（１０）内に配置されているダンパ弁（７０）は、軸線方向の互いに反対側に位置する第１及び第２端部（７６、７８）と、両者の間に位置する中間部分（８０）とを有するハウジング（７２）を備えている。第１端部（７６）は制御弁（１８）と連通しており、第２端部（７８）はパワーステアリングモーター（２２）と連通している。流量制限要素（１１４）は、流体の流れによって、中間部分（８０）を含むハウジング（７２）の各部を通って移動できるようになっている。付勢要素（１０６）が、流量制限要素（１１４）の、ハウジング（７２）の第１端部（７６）に向かう運動を抑制する。流量制限要素（１１４）とハウジング（７２）の間に形成されるオリフィス（１１６）は、所定量を上回る流量の流体が、ハウジング（７２）を通って第２端部（７８）から第１端部（７６）に向かって流れるのを制限する。 【選択図】図２
Patent JP-2005507154-A (JP)
Title: 規則的２相絶縁膜、およびそれを含む半導体デバイス
IPC: H01L23/532
Filed: 2002-04-30
Abstract: 【課題】優れた機械的性質をもつ多孔性低誘電率絶縁膜、ならびにその膜の製造方法および金属配線構造間の絶縁層としての膜の使用法を提供すること。 【解決手段】多孔性低誘電率絶縁膜は、間隔が実質的に均一であり、また３次元周期格子のサイトに事実上配置される、１から１０ｎｍの直径をもつ単分散空孔からなる第１相；および第１相を囲む固体である第２相；を含む。詳細には、膜の第２相は、（ｉ）間隔が実質的に均一であり、３次元周期格子のサイトに事実上配置される、１から１０ｎｍの直径をもつナノ粒子からなる規則的要素、および（ｉｉ）２．８以下の誘電率をもつ絶縁材料からなる規則性のない要素、を含む。
Patent JP-2004213484-A (JP)
Title: Production management system and production management method for rental product reproduction factory
Inventor: KAMIMURA TAKUTO
IPC: G06Q30/06
Filed: 2003-01-07
Abstract: <P>PROBLEM TO BE SOLVED: To attain the avoidance of a stockout state and the leveling of loads in a plurality of rental product reproduction factories.  <P>SOLUTION: This production management system comprises a reproduction factory information acquisition section 16 for acquiring recovery schedule information a, reproduction plan information b and reproduction state information c of used rental products in each rental product reproduction factory from each rental product reproduction factory; an operating condition grasping part 20 for grasping the operating condition of each rental product reproduction factory; and a leveling plan section 22 for designing a transfer plan of the used rental products or rental products under reproduction between rental product reproduction factories.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004211013-A (JP)
Title: Abrasive and method for producing the same
Inventor: WACHI HIROKO
IPC: B24B37/00
Filed: 2003-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide an abrasive which is composed of stable and homogeneous dispersing elements, and allows rubbing an excessive metallic membrane left on an insulating membrane processed for wiring without flaws and scratches caused by over polishing on a surface to polish; and a method for producing the same.  <P>SOLUTION: The abrasive is an aqueous dispersion containing a mixture of inorganic fine particles and organic fine particles which have the same sign charge of potential as the inorganic fine particles and are insoluble in water. The mixture is narrower in particle distribution region than the inorganic fine particles in an aqueous dispersion, and forms a homogeneous dispersing system. The method provide the abrasive.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2003195238-A (JP)
Title: Reflective multi-layer film for semiconductor spatial light modulator
Inventor: SUZUKI CHIYOUJITSURIYO
IPC: G02F1/017
Filed: 2003-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide an element capable of improving the utilization efficiency of light and performing a high-speed operation and a low voltage operation in a spatial light modulator used in an optical information processing technique.  <P>SOLUTION: To obtain a reflective multi-layer film, a first material of a low impurity content and a second material of the low impurity content whose refractive index is different from that of the first material are alternately laminated along an appropriate first crystal axis direction. An electro-optical effect is induced by an electric field applied from an optional crystal axis direction including the first crystal axis direction, and an optical refractive index to light made incident from the first crystal axis direction is changed. Since the electro-optical effect is induced by the electric field applied from the optional direction of the element and the optical refractive index to the light made incident from the first crystal axis direction is changed, the interference conditions of the reflective multi-layer film are destroyed, the reflection spectrum is changed by applied voltage and the reflectance is changed at a certain specified wavelength.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2004213551-A (JP)
Title: Sequence rule visualizing data analysis device, sequence rule visualizing program and recording medium recorded with program
Inventor: KAWANA AKIHIRO
IPC: G06Q50/10
Filed: 2003-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide a sequence rule visualizing data analysis device having a visualizing function intelligibly expressing how a plurality of attributes expressed in a nominal scale are changed in multipoints and a long period of time.  <P>SOLUTION: This data analysis device for visualizing a sequence rule extracts a sequence pattern from information clearly expressing a time or an order and displaying the sequence pattern on an information display region. The device is characterized by having the sequence rule visualization function dividing an information display region into multidimensional cells by combinations of a plurality of attribute classifications and expressing by applying an attribute transition state to a moving expression between the cells.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004218448-A (JP)
Title: Fuel supply system, and method of fitting fuel supply system
Inventor: SUZUKI YOSHIMI
IPC: F02M55/02
Filed: 2003-01-09
Abstract: <P>PROBLEM TO BE SOLVED: To dispense with a complicated process of correcting the direction of a connection part of a connector part or the like.  <P>SOLUTION: A clearance adjusting plate 100 interposed between an external screw part 22 of a pressure regulator 20 and an internal screw part 14 of a common rail 10 has a thickness equivalent to a clearance formed between the mutual opposed faces of both internal and external screw parts 14, 22 between the abutting state of the mutual opposed faces by advancing the external screw part 22 to the stroke end, and the communicating state of the connector part 23 projected from the outer surface of the pressure regulator 20, with an object member by retreating the external screw part 22.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004217739-A (JP)
Title: Water gel structure
Inventor: YUGUCHI NOBUAKI
IPC: A61K47/26
Filed: 2003-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To obtain a stable water gel structure which contains a cellulosic saccharide, is obtained by laminating the cellulosic saccharide and is applicable in a nanosize.  <P>SOLUTION: The water gel structure comprises a saccharide laminate in which side chain-containing water-soluble cellulose skeleton saccharide chains are laminated mutually parallel with ring planes in a laminar state and color-developing or fluorescent low-molecular compounds composed of an aromatic ring as a structural unit exist between the layers of the laminar laminate.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004219594-A (JP)
Title: Lens system optical device
Inventor: MURAMATSU AKIHIRO
IPC: G02B7/10
Filed: 2003-01-14
Abstract: <P>PROBLEM TO BE SOLVED: To provide a compact, inexpensive and high-performance lens system optical device having a plastic lens, which is suitable for a video camera or a digital still camera.  <P>SOLUTION: The lens system optical device has the injection-molded plastic lens 10 and a light quantity damping means 32 along an optical axis 13. The lens 10 has a gate part 12 at the position of a gate at the injection-molding time. The light quantity damping means 32 moves in a direction crossing the optical axis 13 and attenuates light quantity from the position of the gate part 12 in the lens 10.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2003233499-A (JP)
Title: Method for aspect oriented programming with multiple semantic levels
Inventor: LAMPING JOHN O
IPC: G06F9/44
Filed: 2003-01-15
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method for aspect oriented programming with multiple semantic levels.  <P>SOLUTION: Some aspects need access to more information than information available at a basic level in conjunction with program data for one or a plurality of objects. An aspect of aspect oriented systems, a method and an environment checks results of calculation at one stage. The aspect only affects the following calculation stage, as a consequence, no circulation exists. The aspect, furthermore, implements local or global analysis at each stage and can propagate non-local information. A method for aspect oriented programming can eliminate or decrease a 'macro' style programming, therefore, the programming becomes easy by manipulating results of the several calculation stages without manipulating code blocks.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2004221405-A (JP)
Title: Optical material and its manufacturing method
Inventor: HONDA YOSHIKAZU
IPC: H01L33/56
Filed: 2003-01-16
Abstract: <P>PROBLEM TO BE SOLVED: To provide an optical material which can enhance light extraction efficiency.  <P>SOLUTION: The optical material includes fine particles of a metal oxide such as titanium oxide having the mean particle diameter of 50 nm or less, and a binder such as a polybutyral resin for interposing between the particles of the metal oxide. A method of manufacturing the optical material comprises a process (A) for obtaining a suspension in which the metal oxide is shattered into the fine particles having the mean particle diameter of 50 nm or less by mixing and stirring the metal oxide, beads for pulverization having a particle diameter of 0.4 mm or less and a solvent, a process (B) for removing the beads for pulverization from the suspension obtained in the process (A), and a process (C) for obtaining the optical material including the fine particles of the metal oxide and the binder by adding the binder at an arbitrary time point including the processes (A) and (B).  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004222867-A (JP)
Title: Game device
Inventor: KOSUGE MASATO
IPC: A63F7/02
Filed: 2003-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a game device by which correct sales can be grasped by simplifying processing at a management device for managing the sales etc.  <P>SOLUTION: The game device 3 is provided with a recording medium processing means 56 for reading information of a recording medium where game value information according to currency is recorded and using processing means 50, 58 for performing using processing for converting a game value from the read recorded information to a fundamental score usable for the game of a game machine 2. The game device 3 is provided with using value adding and storage means 50; 48 for adding and updating the game value, an unused fundamental score information receiving means 58 for receiving information of unused fundamental scores, using game value calculation means 50; 49 for calculating a used game value by subtracting the game value to which the unused fundamental score specified by the received fundamental score information is equivalent from the game value stored in the value adding storage means 50; 48, and a using game value information output means 57 for outputting information of the calculated using game value to the outside.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004227223-A (JP)
Title: Printer system
Inventor: NAKANO TOSHIO
IPC: B41J29/38
Filed: 2003-01-22
Abstract: <P>PROBLEM TO BE SOLVED: To provide a printer system having improved convenience for a user.  <P>SOLUTION: In the printer system where a plurality of printers 120 and a host computer 130 are connected to a network 140, the host computer 130 is provided with functions for performing each setting including double sides, integration and stapling by a printer driver when making the printer 120 print, and for listing the candidates of the printer 120 connected to the network 140 based on the setting, and for designating the listed printer 120 to perform printing.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004227917-A (JP)
Title: Manufacturing method of oxide superconductive wire and oxide superconductive wire
Inventor: FUJIGAMI JUN
IPC: H01B13/00
Filed: 2003-01-23
Abstract: <P>PROBLEM TO BE SOLVED: To provide a manufacturing method of an oxide superconductive wire having high mechanical strength, and to provide the oxide superconductive wire.  <P>SOLUTION: The manufacturing method of an oxide superconductive wire wherein a metal for covering the raw material powder of the oxide superconductor contains silver, and a silver ratio is 2 or lower, comprises a step of manufacturing a multicore wire of the oxide superconductor raw material powder covered by the metal, a step of drawing the multicore wire, and a step of rolling the multicore wire. Before the step of rolling the multicore wire, surface roughness Ra is set 0.5 μm or lower in a range of a measuring length of 1 mm.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004229036-A (JP)
Title: Communication device and method
Inventor: MATSUDA KOICHI
IPC: H04B3/54
Filed: 2003-01-24
Abstract: <P>PROBLEM TO BE SOLVED: To construct a PLC network of high communication quality.  <P>SOLUTION: In a step S1, a communication device transmits communication information including its ID and a new entry flag to a power line. In a step S2, the communication device waits till reception of communication device transmitted from another communication device. In a step S3, a communication table is updated on the basis of communication information transmitted from another communication device. In a step S4, the communication device transmits communication information including its ID and the ID of another communication 21 device to the power line on the basis of communication device transmitted from another communication device. By repeating processing in steps S2 to S5, the existence of even a communication device which the communication device cannot directly communicate with can be recognized on the basis of communication information from a communication device which the communication device can directly communicate with, and it can be recorded in the second layer of the communication table. This method is available for construction of the PLC network.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004231853-A (JP)
Title: Coating composition
Inventor: MUKAI TAKASHI
IPC: C09D163/10
Filed: 2003-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To provide a coating composition having low load on the global environment, excellent in workability because of one-pack type, having little influence on a ground coated film and having a good recoating property and excellent in corrosion resistance, chemical resistance and adhesiveness.  <P>SOLUTION: The coating composition comprises (F) a modified epoxy resin solution containing (D) a modified epoxy resin obtained by reacting a bisphenol type epoxy resin (a) with amines (b) containing an aliphatic second amine having a specific structure and a (semi)drying oil fatty acid (c) and (E) a solvent containing an aliphatic hydrocarbon solvent, and the solvent (E) contains 30-70 wt.% aliphatic hydrocarbon solvent.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004233773-A (JP)
Title: Keyboard instrument
Inventor: KANAYAMA RYOHEI
IPC: G10H1/34
Filed: 2003-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To provide a keyboard instrument where a keyboard unit is tightly fixed while bringing the keyboard unit into contact with the cushion material during a musical performance to suppress transmission of vibration to a bottom plate and also fixing the keyboard unit not while the keyboard unit is not in contact with the cushion material to deter pressure from operating on the cushion material during transport.  <P>SOLUTION: The keyboard unit 2 can be lifted and fixed while the keyboard is not in contact with the cushion material 3 by threadably engaging a holder fixing bolt 6 with a female screw part 4c. Thus, while pressure is deterred from operating on the cushion material 3, the keyboard unit 3 can tightly be fixed to the bottom plate 4 through a support holder 5. The holder fixing bolt 6 is removed and then the keyboard unit 2 can be mounted on the cushion material 3 with its own weight, so both the members are brought into contact with each other to deter vibration from being transmitted to the bottom plate 4.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004232617-A (JP)
Title: Engine intake device
Inventor: TANABE RYUTARO
IPC: F02M35/10
Filed: 2003-01-31
Abstract: <P>PROBLEM TO BE SOLVED: To provide effective technique for obtaining secure mixing effect for intake air with EGR gas in an upstream range of an intake port in an intake device for an engine of such a constitution that exhaust gas in an exhaust system is recirculated as EGR gas to an intake system.  <P>SOLUTION: In this engine intake device, a whirl chamber 24 of a cylindrical form is provided upstream of the intake port, and mixed gas introducing piping 23 and a mixed gas leading passage 27 are connected to the whirl chamber 24. The mixed gas introducing piping 23 is composed of intake piping 21 combined with EGR gas introducing piping 44. For the mixed gas introducing piping 23, an introducing port 23a is connected to the whirl chamber 24 in a tangential direction to it, so that mixed gas introduced into the whirl chamber 24 forms a smooth whirl current around a whirl center L. The mixed gas leading passage 27 has inner diameter d2 smaller than inner diameter d1 of the whirl chamber 24, and it is disposed to correspond to a center side range S1 in which whirling force (moving quantity) of the whirl current is relatively small.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004241840-A (JP)
Title: Vehicle-mounted communication apparatus
Inventor: SHIMADA IKUO
IPC: H04W84/10
Filed: 2003-02-03
Abstract: <P>PROBLEM TO BE SOLVED: To provide a vehicle-mounted communication apparatus which avoids the communication failure in either a narrow- or wide-area communication.  <P>SOLUTION: A mounted apparatus 11 takes narrow- and wide-area roadside apparatus as a communication party. The vehicle-mounted apparatus 11 is communicable with the narrow- and wide-area roadside apparatus in narrow- and wide-areas, respectively. The narrow- and wide-area roadside apparatus send pilot signals in the narrow and wide areas, respectively. Upon receipt of the pilot signal, the vehicle-mounted apparatus 11 converts it to a demodulated signal, and a decision circuit 19 decides a communication party. If the communication party is a narrow-area roadside apparatus as the result, a transmission control circuit 20 compares the reception level inputted from a detector circuit 18 with a narrow-area threshold A to decide the communication start. If the communication party is decided to be a wide-area roadside apparatus, the transmission control circuit 20 compares the reception level inputted from the detector circuit 18 with a wide-area threshold B to decide the communication start.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004262967-A (JP)
Title: Polyol composition for rigid polyurethane foam and method for producing rigid polyurethane foam
Inventor: ANRAKU NATSUKO
IPC: C08G101/00
Filed: 2003-02-06
Abstract: <P>PROBLEM TO BE SOLVED: To provide a polyol composition for a rigid polyurethane foam with suppressed vapor pressure of HFC-245fa while using the HFC-245fa as a foaming agent and to provide a method for producing the rigid polyurethane foam.  <P>SOLUTION: The polyol composition for the rigid polyurethane foam comprises 1,1,1,3,3-pentafluoropropane (HFC-245fa) as a foaming agent component and contains diethylene glycol monoethyl ether acetate and a polyol compound containing a tertiary amino group in which the content of nitrogen based on the tertiary amino group is 0.5-9 wt.% in the polyol compound. HFC-365mfc or HFE-254pc is preferably used as the foaming agent component in combination.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2004239177-A (JP)
Title: Exhaust gas reducing device for engine
Inventor: NOGUCHI SUKENORI
IPC: F02M25/07
Filed: 2003-02-06
Abstract: <P>PROBLEM TO BE SOLVED: To effectively reduce exhaust gas through simple constitution not through electronic control.  <P>SOLUTION: A passage 12a of a subsidiary chamber 12 opening to the inner wall surface of a cylinder 2 is opened and closed according to reciprocating motion of a piston 6, and a part of combustion gas is introduced in the subsidiary chamber 12. The combustion gas in the subsidiary chamber 12 is introduced in a combustion chamber 7 at a suction stroke and mixed with fresh air. Through re-combustion after compression at a compression stroke, internal EGR is realized through simple constitution not through electronic control, and exhaust gas is reduced.  <P>COPYRIGHT: (C)2004,JPO&NCIPI