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1. 发明专利

JP2005036812A Device for evaluation of emission gas purification catalyst 有权
标题翻译：排放气体净化催化剂评估装置
公开(公告)号：JP2005036812A
公开(公告)日：2005-02-10
申请号：JP2004272680
申请日：2004-09-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OSUGA MINORU , FUJIEDA MAMORU , KURIHARA NOBUO
IPC分类号： F02D45/00 , B01D53/94 , F01N3/20 , F01N3/22 , F01N3/28 , F02D41/14
CPC分类号： Y02T10/24
摘要： PROBLEM TO BE SOLVED: To detect a decline in efficiency in order to prevent a decline in efficiency caused by degradation of a catalyst of an internal combustion engine in its long-term operation, and control an engine so that high efficiency can be maintained. SOLUTION: A catalyst 3 is arranged at an exhaust pipe 2 of an engine 1 of the device. Sensors 7, 8 for detecting exhaust condition are arranged at the front and the rear of the catalyst 3. The sensors 7, 8 can be, for example, oxygen sensors of which output changes in step at λ= 1, or a sensor of which output changes in proportion to an air-fuel ratio. The values detected by both of the sensors are taken into a control unit 9. Then purification efficiency and a degree of degradation of the catalyst are estimated by the compared results, and the engine is controlled so that efficiency can be optimized. Thus, since a decline in efficiency of the catalyst caused by its long-term operation is accurately detected, and the engine is controlled so that the decline in efficiency can be avoided, high exhaust-purifying properties can be maintained. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了检测效率的下降，以防止在其长期运行中内燃机的催化剂的劣化引起的效率下降，并且控制发动机以使得高效率可以保持。解决方案：催化剂3设置在装置的发动机1的排气管2处。用于检测排气条件的传感器7,8布置在催化剂3的前部和后部。传感器7,8可以是例如在λ= 1处的步骤的输出变化的氧传感器或其传感器输出变化与空燃比成比例。由两个传感器检测到的值被送入控制单元9.然后通过比较结果估计催化剂的净化效率和劣化程度，并且控制发动机以使效率最优化。因此，由于能够准确地检测出由于其长时间运转引起的催化剂效率的下降，因此能够控制发动机，从而可以避免效率下降，能够维持高排气净化性。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2004360524A Combustion control device and combustion control method for cylinder injection engine 有权
公开(公告)号：JP2004360524A
公开(公告)日：2004-12-24
申请号：JP2003158289
申请日：2003-06-03
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： FUJIEDA MAMORU , YAMAGUCHI JUNICHI , FUJII TAKASHI , OSUGA MINORU
IPC分类号： F02P5/15 , F01L1/34 , F01L13/00 , F02B17/00 , F02B23/10 , F02B75/12 , F02D13/02 , F02D41/00 , F02D41/02 , F02D41/04 , F02D41/30 , F02D41/34 , F02D41/40 , F02D43/00 , F02M25/07
CPC分类号： F02D13/0261 , F01L1/34 , F01L13/00 , F01L2800/00 , F02B17/005 , F02B23/104 , F02B2075/125 , F02D13/0265 , F02D41/0002 , F02D41/006 , F02D41/3029 , F02D41/402 , F02D41/403 , F02D2041/001 , F02D2041/389 , F02M26/01 , Y02T10/123 , Y02T10/18 , Y02T10/42 , Y02T10/44
摘要： PROBLEM TO BE SOLVED: To provide a cylinder injection engine, for sufficiently vaporizing fuel in a combustion chamber, burning air-fuel mixture in a stoichiometric state, stabilizing combustion, reducing fuel economy, and reducing HC or NOx. SOLUTION: In a combustion control device of the cylinder injection engine, a condition of opening/closing of an intake valve and/or an exhaust valve is controlled to make the exhaust remain in the combustion chamber when an operational status of the engine is in a partial load region, and fuel is injected from a fuel injection valve in the residual exhaust at least one time in a second half of an exhaust stroke to a first half of the intake stroke in one combustion cycle, and the air-fuel mixture is ignited in a second half of the compression stroke thereafter. COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2003161155A INTAKE SYSTEM FOR INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003161155A
公开(公告)日：2003-06-06
申请号：JP2002276542
申请日：2002-09-24
申请人： HITACHI LTD
发明人： YAMAGUCHI JUNICHI , OSUGA MINORU , NOGI TOSHIJI , FUJIEDA MAMORU , KURIHARA NOBUO , OYAMA TAKASHIGE , YAMADA HIROYUKI , MAMA SHIGEYUKI
IPC分类号： F02B31/00 , F02B31/02 , F02D41/04 , F02D41/06 , F02M25/07 , F02M35/10 , F02M35/104 , F02M69/00 , F02M69/04 , F02M69/32
摘要： PROBLEM TO BE SOLVED: To provide an intake system which generates a swirl of an adequate strength in accordance with a speed and a load of an engine, offers good intake characteristics under full load of the engine, an outstanding fuel response, and an outstanding air response when torque is increased due to operation of auxiliaries. SOLUTION: An auxiliary fluid passageway 210 is provided in addition to a main passageway 202 of an intake pipe. An outlet 213 of the auxiliary fluid passageway 210 is open to an independent intake pipe near an intake valve. A plurality of types of fluid are drawn in, including air and EGR gas. A plurality of control applications are also provided, including applications for idle control, torque increase, and EGR. Any of these types of fluid is controlled by an intake control valve 211 provided in the auxiliary fluid passageway 210. The internal volume of the auxiliary fluid passageway 210 is built smaller than that of the main air passageway. This design feature allows a required amount of fluid to be quickly supplied to the engine, which helps improve response during idling, torque increase, EGR, and the like. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2003090247A METHOD OF STRATIFYING MIXTURE FOR CYLINDER INJECTION ENGINE, AND ELECTRONIC ENGINE CONTROL DEVICE USED IN THIS METHOD 审中-公开
公开(公告)号：JP2003090247A
公开(公告)日：2003-03-28
申请号：JP2002204980
申请日：2002-07-15
申请人： HITACHI LTD
发明人： OSUGA MINORU , SHIRAISHI TAKUYA , NAKAYAMA YOKO , FUJIEDA MAMORU
IPC分类号： F02B23/10 , F02B31/00 , F02B75/12 , F02D9/02 , F02D41/02 , F02D41/04 , F02D43/00
摘要： PROBLEM TO BE SOLVED: To stratify a rich/lean mixture, by combining swirl shape, strength, and an atomizing speed of the fuel, recognizing an injection speed of fuel. SOLUTION: Swirl strength is set to 1 to 3.5, an injection speed of fuel injected into a combustion chamber is set to from 5 to 37 m/s or from 5 to 25 m/s, and air/fuel ratio A/F is generated to the lean limit. A control device has a means for judging a region transfer of lean combustion from the swirl strength and the injection speed of fuel.

5. 发明专利

JP2001020727A EVALUATION SYSTEM FOR EXHAUST EMISSION PURIFICATION CATALYST 失效
公开(公告)号：JP2001020727A
公开(公告)日：2001-01-23
申请号：JP2000192652
申请日：2000-06-22
申请人： HITACHI LTD
发明人： OSUGA MINORU , FUJIEDA MAMORU , KURIHARA NOBUO
IPC分类号： F02B31/00 , F01N3/20 , F01N3/24 , F01N3/28 , F02D41/14 , F02D45/00 , F02M69/00
摘要： PROBLEM TO BE SOLVED: To control an engine to facilitate maintaining high efficiency by detecting efficiency drop to prevent efficiency drop caused by deterioration of a catalyst of an internal combustion engine due to long-term use. SOLUTION: In this system, a catalyst 3 is provided in an exhaust pipe of an engine 1. Sensors 7, 8 for detecting a condition of the exhaust gas are disposed before and after the catalyst 3. These sensors 7, 8, may be, for example, an oxygen sensor whose output varies step by step with λ=1 and a sensor whose output varies in proportion to air-fuel ratio. Detected values of these two sensors are read in by a control unit 9, the purification efficiency and deterioration level of the catalyst are estimated based on the results of comparison of the detected values, and the engine is controlled to obtain the optimal efficiency. Consequently, efficiency drop of the catalyst due to long-term use is detected accurately and the engine is controlled such that further efficiency drop can be avoided. Therefore, high exhaust purification characteristics can be maintained.

6. 发明专利

JP2000282866A CYLINDER FUEL INJECTION TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000282866A
公开(公告)日：2000-10-10
申请号：JP2000081728
申请日：2000-03-17
申请人： HITACHI LTD
发明人： NOGI TOSHIJI , OYAMA TAKASHIGE , FUJIEDA MAMORU
IPC分类号： F02B19/12 , F02B1/10 , F02B19/10 , F02B23/10 , F02B31/00 , F02B41/00 , F02B75/12 , F02D41/04 , F02D41/34 , F02D43/00 , F02F1/24 , F02M57/06 , F02M61/14 , F02M61/18 , F02P5/15 , F02P13/00
摘要： PROBLEM TO BE SOLVED: To instantaneously burn a mixture in a combustion chamber of an internal combustion engine. SOLUTION: An internal combustion engine includes a nozzle 30 located so as to cover a fuel injector 2 and a spark plug 3, and formed therein with a hole 20 for causing the part of a fuel stream to pass through a combustion chamber 21 and causing the remaining part of the fuel stream to remain therein. The part of the fuel stream before ignition, which has passed through the hole 20 creates a lean auxiliary mixture in the combustion chamber 21 in its entirety, and the remaining fuel part of the fuel stream creates an igniting mixture within the nozzle 30. The igniting mixture is ignited by the ignition of the spark plug 3 in order to create burnt gas jetted into the lean auxiliary mixture outside of the nozzle 30, through the hole 20, and the burnt gas passing through the hole 20 is torn off by the fuel jet stream after ignition so as to form flame kernels. Then, the flame kernels are diffused in the combustion chamber 21 in its entirety, and the lean auxiliary mixture is burned by the diffused flame kernels.

7. 发明专利

JPH11210469A CYLINDER INJECTION TYPE SPARK IGNITION ENGINE 失效
公开(公告)号：JPH11210469A
公开(公告)日：1999-08-03
申请号：JP1012098
申请日：1998-01-22
申请人： HITACHI LTD
发明人： SUKEGAWA YOSHIHIRO , KIHARA YUSUKE , FUJIEDA MAMORU , NOGI TOSHIJI , KAWABE RYUHEI
IPC分类号： F02B23/08 , F02B23/10 , F02B75/12 , F02F3/26
摘要： PROBLEM TO BE SOLVED: To prevent generation of smoke and soot from a spark plug in a cylinder injection type spark ignition engine adapted to carry out stratified combustion. SOLUTION: In a cylinder injection type spark ignition engine including a spark plug 8 provided at the center of the upper part of a cylinder, a fuel injection valve 5 provided in the peripheral part of the cylinder, a recessed groove 1 formed in the top surface of a piston 4, and a swirl flow creating means provided in an intake pipe, a convex part 13 having inclined surfaces 13a, 13c and a vertical surface 13b are formed on the exhaust pipe side of the recessed groove 1. During the later half period of compression stroke, fuel is injected into the recessed groove 1, striding over the vertical surface 13b of the convex part 13. With this arrangement, fuel injected onto the top surface of the convex part 13, creates a mixture which can be easily ignited around the spark plug, and fuel injected toward an intake pipe from the convex part is diffused in the recessed groove 1, thereby it is possible to prevent occurrence of smoke and soot from the spark plug.

8. 发明专利

JPH10331701A CONTROLLER 失效
公开(公告)号：JPH10331701A
公开(公告)日：1998-12-15
申请号：JP9294198
申请日：1998-04-06
申请人： HITACHI LTD
发明人： FUJIEDA MAMORU , OSUGA MINORU , NOGI TOSHIJI , OYAMA TAKASHIGE
IPC分类号： B60G23/00 , B60G17/015 , B60W10/00 , B60W10/04 , B60W10/06 , B60W10/10 , B60W10/18 , B60W10/184 , B60W10/22 , F02D41/00 , F02D41/34 , F02D45/00 , G05B11/32 , G05B13/02 , G05B15/02 , G05B21/02 , G06F15/18 , G06N3/00 , B60K41/28
摘要： PROBLEM TO BE SOLVED: To properly control an actuator by providing a neuro-computer to which an output of a second sensor different from a first sensor, and controlling the actuator based on an output of the neuro-computer. SOLUTION: A signal of a knocking sensor 8 is input to a sample hold circuit 11 via an amplifier 9. The input signal 10 is a time series signal. The sample hold circuit 11 sample holds the signal 10 at a constant time cycle, and it is input as a special multivariate signal, 12a, 12b, 12c,..., 12n in input order, to an input phase of a neuro-computer 13. According to a signal 15 from a control circuit 2 the circuit 11 is controlled. An output 14 of the neuro-computer 13 is output as a voltage proportional to the strength of knocking in an engine, and then it is converted into a digital signal by a D/A converter of the circuit 2 to control the ignition timing. Accordingly, a proper control is assured.

9. 发明专利

JPH09287462A HIGH-SUPERCHARGING SYSTEM FOR ENGINE 失效
公开(公告)号：JPH09287462A
公开(公告)日：1997-11-04
申请号：JP9643896
申请日：1996-04-18
申请人： HITACHI LTD
发明人： OOYAMA YOSHINARI , FUJIEDA MAMORU , OSUGA MINORU , SHIRAISHI TAKUYA , NAKAYAMA YOKO
IPC分类号： F02B33/40 , F02B37/00 , F02B37/04 , F02B39/04 , F02B39/08
摘要： PROBLEM TO BE SOLVED: To provide a supercharging system for increasing the combustion air pressure for an engine, capable of reducing the loss in high-supercharging in an engine having a higher expansion ratio and the like and improving the engine efficiency. SOLUTION: A supercharging system has a compressor 82 driven by an exhaust turbine 81, and a mechanical compressor 86 driven by an engine output shaft, which are both centrifugal compressors. A turbine and a front stage catalytic converter 85 are provided at the downstream side of an exhaust pipe 80. At the start-up and warming-up of an engine, since the exhaust temperature to a catalytic converter 83 drops, a selector valve 84 stops the supply of exhaust gas to the exhaust turbine and guides exhaust gas to the front stage catalytic converter, to promote the purification of exhaust emissions. At that time the mechanical compressor is driven for supercharging. After the start-up and warming-up, the selector valve is shifted to direct exhaust gas to the turbine, and then the mechanical supercharging is stopped. As a power converting mechanism for the mechanical compressor, a planetary gear device with variable transmission gear ratio or a fluid-driven device is provide.

10. 发明专利

JPH09273462A COMBUSTION CONTROLLER FOR ENGINE 失效
公开(公告)号：JPH09273462A
公开(公告)日：1997-10-21
申请号：JP8275196
申请日：1996-04-04
申请人： HITACHI LTD
发明人： OYAMA TAKASHIGE , FUJIEDA MAMORU , OSUGA MINORU , NAKAYAMA YOKO
IPC分类号： F02B17/00 , F02B23/10 , F02M29/00 , F02M61/18
摘要： PROBLEM TO BE SOLVED: To accomplish stable combustion by means of a lean air-fuel mixture. SOLUTION: A pipe is arranged in front of an injection hole 113 in a fuel injection valve 24, and fuel jetted from the injection hole 113 reaches the tip 109 of the pipe through the path shown by the broken lines, and from the tip of the pipe, the fuel is atomized in the form of a solid cone as shown by arrows so as to be spread in a combustion chamber of a cylinder. Therefore, fuel particles can be distributed in the form of a solid cone uniformly, so that evaporation of the fuel is promoted, and as a result, stable lean combustion can be accomplished.

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