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1. 发明专利

JP2004044598A Air intake device of internal combustion engine 审中-公开
公开(公告)号：JP2004044598A
公开(公告)日：2004-02-12
申请号：JP2003207424
申请日：2003-08-13
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： MINEGISHI TERUHIKO , OSUGA MINORU , YAMAGUCHI JUNICHI , SASAKI YASUSHI , NEMOTO HIROYUKI , KADOMUKAI YUZO , KAWABE RYUHEI
IPC分类号： F02B27/00 , F02B27/02 , F02B31/00 , F02D41/00 , F02M25/07 , F02M35/10 , F02M35/104 , F02M55/02 , F02M69/00 , F02M69/04
CPC分类号： Y02T10/146
摘要： PROBLEM TO BE SOLVED: To provide a compact air intake device of an internal combustion engine.
SOLUTION: A collector comprises a plurality of collector portions divided by a plurality of partition walls. A control circuit is attached to a surface of the partition wall. Wires to the control circuit are molded in a part of the partition wall, and the partition wall serves as insulation material for the wires. The partition wall is formed with a connector for electric connection. A fuel injection valve is attached to a manifold portion that is equipped with a manifold connected to the collector. The manifold is provided with a shutoff valve, and when the shutoff valve is closed, air is fed to an intake port through a bypass passage.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2000205541A REFUSE INCINERATION PLANT AND CONTROL METHOD THEREOF 失效
公开(公告)号：JP2000205541A
公开(公告)日：2000-07-25
申请号：JP1030099
申请日：1999-01-19
申请人： HITACHI LTD
发明人： KONO TAKESHI , TANIGUCHI MASAYUKI , YAMAMOTO KENJI , KAWABE RYUHEI , TAKEGAWA SHIGEKI
IPC分类号： F23G5/50
摘要： PROBLEM TO BE SOLVED: To reduce emission of environmental pollution substances in exhaust gas quickly by correlating the air ratio of thermal decomposition gas produced from the drying stage with the concentration of environmental pollution substances and controlling an incinerator to minimize the concentration of environmental pollution substances according to the correlation. SOLUTION: A gas concentration sensor 27 disposed on a dry stoker 4 measures oxygen and the composition of unburnt components contained in combustion gas. An air ratio operating unit 28 calculates the air ratio from the mass fraction of carbon atom, hydrogen atom and oxygen atom contained in the combustion gas based on the oxygen and the composition of unburnt components. A thermal decomposition gas temperature sensor 26 measures the temperature of thermal decomposition gas produced from above the dry stoker 4 and outputs the measurements to a flow rate distribution controller 30. The flow rate distribution controller 30 controls the incinerator to minimize the concentration of environmental pollution substances according to the relationship of the concentration of various environmental pollution substances, the air ratio of thermal decomposition gas obtained from the air ratio operating unit 28, and the temperature of thermal decomposition gas.

3. 发明专利

JPH11257077A IN-CYLINDER INJECTION TYPE SPARK IGNITION ENGINE 失效
公开(公告)号：JPH11257077A
公开(公告)日：1999-09-21
申请号：JP6645298
申请日：1998-03-17
申请人： HITACHI LTD
发明人： SUKEGAWA YOSHIHIRO , KIHARA YUSUKE , NOGI TOSHIJI , NAKAYAMA YOKO , KAWABE RYUHEI
IPC分类号： F02B23/10 , F02B23/08 , F02B75/12 , F02D41/02 , F02D41/04 , F02F1/42 , F02F3/28
摘要： PROBLEM TO BE SOLVED: To improve combustion stability at lean burn, by providing means for generating swirl in intake and compression strokes as well as a structure to decrease the speed of the swirl at the top face of the piston, and by injecting fuel in the intake stroke or the early stage of compression stroke during low and middle load operation. SOLUTION: In this four valve engine, two intake tubes 6a, 6b and two exhaust tubes 8 are provided at the upper portion of a cylinder 2, and an intake valve 13 and an exhaust valve 14 are provided at each of the intake and exhaust pipes 6a, 6b, and 8. A swirl control valve 16 is provided at an intake tube 6b. The swirl control valve 16 is closed during low and middle load operation and opened during high load operation by a drive mechanism. At the top surface of the piston 3, radially provided is a swirl inhibition plate with a rectangular parallelepiped. The swirl inhibition plate is set to have an angle of 90 deg. between the side face of the swirl inhibition plate 1 and the upper face of the piston 3. While the engine is operated, fuel is injected via a fuel injection valve 4 in the intake stroke and in the early stage of the compression stroke during low and middle load operation.

4. 发明专利

JPH07229865A DEVICE FOR DETECTING PIPE INSIDE DEPOSIT 失效
公开(公告)号：JPH07229865A
公开(公告)日：1995-08-29
申请号：JP2395194
申请日：1994-02-22
申请人： HITACHI LTD
发明人： NISHIHARA YOSHIHIRO , KAWABE RYUHEI
IPC分类号： G01N25/18
摘要： PURPOSE:To contrive the improvement of safety of a piping system by early detecting pipe inside deposits. CONSTITUTION:A metal piece 6 of which side is heat-insulated with a heat insulator 8, is mounted on the surface of piping 1, and two thermocouples 7 are attached to the inside of the metal piece 6 with intervals in the radius direction. Output signals 9 of the thermocouples 7 are taken in a personal computer 4. A temperature difference between the two thermocouples 7 is found, when its temperature difference is smaller than a preset limit point, the personal computer 4 judges presence of deposits 2 and an alarm is indicated on a display 5.

5. 发明专利

JPH05195714A METHOD AND DEVICE FOR MONITORING VIBRATION OF Y-GLOBE VALVE 失效
公开(公告)号：JPH05195714A
公开(公告)日：1993-08-03
申请号：JP1006992
申请日：1992-01-23
申请人： HITACHI LTD
发明人： SOMA HISASHI , NAKAO SHUNJI , KAWABE RYUHEI , KAWAMURA TSUTOMU , YOKOYAMA IWAO
IPC分类号： F01D21/00
摘要： PURPOSE:To monitor deterioration of a Y-globe valve caused by vibration of a disc such as fatigue of the valve stem and the wear of the disc and guide ribs by installing vibration sensors on the outer surface of the valve body. CONSTITUTION:At least two vibration sensors 10, 11 are installed on the outer surface of a valve body 2, and the vibratory mode of a disc 1 (whether it vibrates rectangularly to or parallel with steam flow 4, or vibrates while rotating, etc.) is anticipated from dislocation of the time between the effective value peaks of two sensing signals given b them 10, 11. From the effective values determined during the plant in operation, fatigue of valve stem and the wear amounts of the disc and guide ribs are determined on the basis of the predetermined relationship between the valve stem fatigue and sensing value and/or the predetermined relationship between the wear amounts of disc 1 and guide ribs 6, 7 and the corresponding sensing values, and if the allowable value is exceeded, an alarm is issued.

6. 发明专利

JPH04228851A FUEL INJECTION CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE AND ITS DEVICE 失效
公开(公告)号：JPH04228851A
公开(公告)日：1992-08-18
申请号：JP40821790
申请日：1990-12-27
申请人： HITACHI LTD
发明人： TAKAMORI KAZUHIDE , KAWABE RYUHEI , KAWASAKI TERUFUMI , YOKOMIZO OSAMU
IPC分类号： F02D41/34
摘要： PURPOSE:To improve fuel consumption performance of an internal combustion engine and save energy. CONSTITUTION:When the present TDC signal indicating the top dead center position is inputted from a speed sensor of an internal combustion engine, the optimum fuel injection starting time before T(sec) is calculated according to the formula I by the TDC signal, and fuel is injected. Where, L: distance (m) between a fuel injection nozzle and an intake valve, V: initial velocity of the injected fuel (m/sec), C: air resistance correction factor, and this value is dependent on the pressure within an intake tube but is usually a constant of 1.33.

7. 发明专利

JPH04204091A CORE FLOW MEASUREMENT OF LIQUID METAL COOLING NUCLEAR REACTOR 失效
公开(公告)号：JPH04204091A
公开(公告)日：1992-07-24
申请号：JP32907090
申请日：1990-11-30
申请人： HITACHI LTD
发明人： KAWABE RYUHEI
IPC分类号： G21C17/032
摘要： PURPOSE:To contrive improvement of accuracy and safety by attaching a flow meter which connects a secondary cooling water system and a water system, to an intermediate heat exchanger, and a liquid surface meter to pump surroundings, respectively, as a heat transferring system. CONSTITUTION:A coolant sodium comes out of a reactor core 1, flows into each intermediate heat exchanger 3 via a high temperature prenum 2, and then enters a low temperature prenum 4 and returns to the reactor core 1 again via a pump 5 and a pump discharge pipe 6. At an outlet of the heat exchanger 3, an insodium electromagnetic flow meter 7 is provided and also a liquid surface meter 8 measures sodium liquid surface 9 which is formed at the pump surroundings. Core flow rate Wc is obtained by the equation I from the measured values of the flow meter 7 and the liquid surface meter 8. Here, Wi is flow rate of the i-th intermediate heat exchanger, Sj is the j-th liquid surface area, Lj is the j-th liquid surface level and t is the time. By this treatment, linearity of flow rate-output relation is improved, and highly accurate measurement and improvement of safety are contrived.

8. 发明专利

JPH01129189A HIGH-CONVERSION BURNER REACTOR 失效
公开(公告)号：JPH01129189A
公开(公告)日：1989-05-22
申请号：JP28732387
申请日：1987-11-16
申请人： HITACHI LTD
发明人： MURATA SHIGETO , KAWABE RYUHEI , SANO KENJI
IPC分类号： G21C1/08
摘要： PURPOSE:To make the best use of a characteristic of a high-conversion burner reactor without modification of structure of a reactor core and reduce the cost of development and construction by arranging two atomic reactors in line and equipping one reactor with function of a high-conversion reactor and the other reactor with that of a burner reactor. CONSTITUTION:A atomic reactor 13 is equipped with function of a high- conversion reactor and accomplishes conversion of uranium 238 into plutonium 239 beside heat generation caused by nuclear fission reaction of uranium 235. The other atomic reactor 13 is equipped with a function of a burner reactor and plutonium 239 produced in the high-conversion reactor 12 is burned. A fuel assembly 9 is stored in a fuel storage pool 10 once and charged in the burner reactor 13 to burn if necessary.

9. 发明专利

JPS6483187A PRESSURE TUBE NUCLEAR REACTOR 失效
公开(公告)号：JPS6483187A
公开(公告)日：1989-03-28
申请号：JP23873887
申请日：1987-09-25
申请人： HITACHI LTD
发明人： KAWABE RYUHEI , YAMAKI RIKA
IPC分类号： G21C1/20
摘要： PURPOSE:To prevent breaking of reactor core fuel in the case where an emergency core cooling system cannot be operated by performing manufacture for increasing radiation rate on the inwall of a calandria tube. CONSTITUTION:A tube housed in a fuel assembly is dual and composed of a pressure tube 1 in the inside and a calandria tube 2 in the outside. Carbon dioxide is enclosed in the annular space between dual tubes, and the function for insulating the high temperature pressure tube 1 and the ordinary temperature calandria tube 3 is performed thereby. Autoclave treatment of the outer surface of the pressure tube 1 is performed to prevent oxidation corrosion and the like of the surface thereof. Further, radiation rate is increased and the quantities of heat transfer to the pressure tube 1 of high temperature fuel, the calandria tube 3 and heavy water 4 are enlarged by performing autoclave treatment on the inwall of the calandria tube 3. Therefore, cooling of fuel rods can be performed in the case of coolant loss accident.

10. 发明专利

JPS6472096A STEAM GENERATOR PLANT 失效
公开(公告)号：JPS6472096A
公开(公告)日：1989-03-16
申请号：JP22840087
申请日：1987-09-14
申请人： HITACHI LTD
发明人： SANO KENJI , KAWABE RYUHEI , MURATA SHIGETO , AOYAMA GORO
IPC分类号： F22B1/06 , F22B1/16 , F22B37/26 , G21C15/18
摘要： PURPOSE:To remove decay heat by detecting the pressure difference between the inlet and outlet of a recirculation flow passage valve, then by opening a spray supply valve to assure water in a steam separator when the detection signal attains a set differential pressure and by opening the recirculation flow passage valve when the water level in the separator attains a set water level. CONSTITUTION:The steam from a steam generator 1 after tripping of a nuclear reactor flows through a bypass valve 18 and a feed water heater 9 to a condenser 6 by bypassing a turbine 5. Since the flow rate of the feed water decreases, the differential pressure across the recirculation flow passage valve 14 increases from the negative toward the positive pressure. The differential pressure signal by a differential pressure detector 30 is inputted to a control circuit 31 and is compared with the set differential pressure. The spray supply valve 13 is opened when the differential pressure signal exceeds the set differential pressure. The feed water is then sprayed through a spray supply pipe 23 into the steam separator 4 by a nozzle 4 and is stored in the separator 4. The water level in the separator 3 is monitored by a water level gage 35. The valve 14 is opened by ANDing with the the open signal of the valve 13 when the monitored water level exceeds the set water level. The entire part of the system is thus maintained at the saturation temp. of water.

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