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11. 发明专利

DE4223649A1 Knock detector for vehicle IC engine - digitises and filters knock sensor signal using two digital filters with centre frequency shifting depending on resonance frequency components 未知
公开(公告)号：DE4223649A1
公开(公告)日：1993-01-21
申请号：DE4223649
申请日：1992-07-17
申请人： HITACHI LTD
发明人： KATOGI KOZO , ICHIHARA TAKANOBU , TOKUDA HIROATSU
IPC分类号： F02B77/08 , F02D45/00 , G01H17/00 , G01L23/22 , G01M15/00
摘要： The knock detector contains a knock sensor (15) which detects the mechanical vibrations of the engine and/or the internal cylinder press. fluctuations. The knock signal is digitised (104), filtered (17) and the maximum intensities of two characteristic resonance frequency components are compared with associated background levels to determine centre frequency shifts for two digital filter units. A knock detection signal is generated (83) if a knock index (82) derived from the comparison intensities in both filter units exceeds a threshold. ADVANTAGE - Reliable, accurate knock detection is performed using a limited number of frequency components. Optimal for analysis under all operating conditions over a long period.

12. 发明专利

DE10115442B4 未知
公开(公告)号：DE10115442B4
公开(公告)日：2006-04-20
申请号：DE10115442
申请日：2001-03-29
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： AMOU KIYOSHI , OKAMOTO YOSHIO , KOWATARI TAKEHIKO , MIYAJIMA AYUMU , KADOMUKAI YUZO , ISHIKAWA TORU , NAGANO MASAMI , ICHIHARA TAKANOBU , SAEKI HIROAKI , WATANABE KENJI
IPC分类号： F02M69/04 , F02M31/135 , F02M53/06 , F02M61/16 , F02M69/08 , F02M69/32
摘要： Atomizing air flowing in an atomizing gas passage is merged with a fuel spray to promote atomization of the fuel, and carrier air flowing in a carrier gas passage is merged with the fuel spray at a further downstream position so as to surround the fuel spray. By doing so, the atomized fuel spray is carried to the downstream side so as to prevent the fuel spray from adhering onto the wall surface. The starting-up performance, fuel consumption and exhaust gas cleaning of an internal combustion engine are improved in this way.

13. 发明专利

DE10115282B4 未知
公开(公告)号：DE10115282B4
公开(公告)日：2006-03-02
申请号：DE10115282
申请日：2001-03-28
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： AMOU KIYOSHI , OKAMOTO YOSHIO , KADOMUKAI YUZO , KOWATARI TAKEHIKO , MIYAJIMA AYUMU , NAGANO MASAMI , ICHIHARA TAKANOBU , SAEKI HIROAKI , SOMENO TADASHI
IPC分类号： F02M31/135 , F02M35/10 , F02M53/06 , F02M69/04 , F02M69/30 , F02M69/32
摘要： A main passage mounting a throttle valve and an air bypass flow passage for reducing HC emission by promoting atomization of the fuel spray injected from the assembly pipe fuel injector are integrated in a body of an intake air control device arranged upstream of an assembly pipe in a one-piece structure to form a unit. Thereby, the intake air control device can be easily manufactured and easily mounted on and dismounted from the intake air system. The amount of HC emitted during warming-up operation of an internal combustion engine is reduced by efficiently supplying fuel spray injected from an assembly pipe fuel injector at the time of starting and warming-up operations for the internal combustion engine.

14. 发明专利

DE69826543T2 未知
公开(公告)号：DE69826543T2
公开(公告)日：2006-02-16
申请号：DE69826543
申请日：1998-02-17
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： FUKUCHI EISAKU , NUMATA AKIHITO , ICHIHARA TAKANOBU
IPC分类号： G01M15/04 , F02D41/00 , F02D41/14 , F02D41/34 , F02D45/00 , G01M15/00 , G01M15/11 , G05B11/36
摘要： A combustion state detection system for an internal combustion engine in which a timing signal associated with the rotation of the crankshaft by a predetermined angle is detected and corrected, and a combustion state parameter is calculated from the timing signal. Further, the deviation of the calculated combustion state parameters for normal combustion is detected between the cylinders, and the correction amount of the timing signal is calculated. A reference cylinder is determined by the means (706, 707) for detecting the deviation. The deviation is detected between the combustion state parameter for normal combustion of the reference cylinder and the cylinder opposed thereto and the combustion state parameter for normal combustion of the remaining cylinders. The correction amount is calculated in such a manner as to control the correction amount to not more than a predetermined value or to zero from the detected deviation.

15. 发明专利

DE19635926C2 未知
公开(公告)号：DE19635926C2
公开(公告)日：2000-10-12
申请号：DE19635926
申请日：1996-09-04
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： FUKUCHI EISAKU , NUMATA AKIHITO , ICHIHARA TAKANOBU , ISHII TOSHIO
IPC分类号： F02D45/00 , F02D41/14 , G01M15/11 , G01M15/00 , G01P3/44
摘要： It is intended to detect combustion state of an internal combustion engine over the entire range where positive torque is generated. Time required from a predetermined first crank angle to a second crank angle is measured by detecting a rotation angle of a ring gear or plate with engine speed detecting means 101. Then, a combustion state parameter is calculated from said required time by combustion state detecting means 102 with an established calculation method, and combustion state is determined by combustion state judging means 103. Engine speed correction means 104 determines and feeds back a correction value for the combustion state detecting value to correct the engine speed. At the moment, the correction quantity for correcting the required time is varied so that the normal combustion value of said combustion state parameter is at a predetermined value or less, or within a predetermined range. When the combustion state parameter reaches a value indicating misfire, update of the correction value is inhibited for a prescribed duration before and after it.

16. 发明专利

DE69105342T2 未知
公开(公告)号：DE69105342T2
公开(公告)日：1995-05-24
申请号：DE69105342
申请日：1991-04-26
申请人： HITACHI LTD
发明人： ICHIHARA TAKANOBU , KATOGI KOZO , TOKUDA HIROATSU
IPC分类号： G01L23/22
摘要： A method and apparatus of detecting knocking in an internal combustion engine having a crankshaft (4) uses a knock detecting sensor (17) to detect vibration caused by knocking. The signals from the knock detecting sensor (17) are detected between a first and a second moment of time (i.e. a measurement window) and at least one of the first and second moments of time are independently varied in dependence upon a vibration spectrum of frequencies to be detected. In a preferred embodiment a plurality of frequency spectra, each having a different first and second moment of time, are each separately analysed for determining knock intensity. The moments of time are represented by first and second angles of the crankshaft. A plurality of measurement windows are advantageously used to determine the level of knocking and if the level exceeds a predetermined level the ignition timing for the engine is retarded. The frequency of maximum amplitude is arranged in operation to be the centre frequency of a frequency spectrum determined by the measurement window.

17. 发明专利

JP2009150371A Control apparatus for engine 有权
标题翻译：发动机控制装置
公开(公告)号：JP2009150371A
公开(公告)日：2009-07-09
申请号：JP2007331313
申请日：2007-12-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAGAWA SHINJI , KANETOSHI KAZUHIKO , KATOGI KOZO , ICHIHARA TAKANOBU , OSUGA MINORU
IPC分类号： F02P5/15 , F02D45/00
CPC分类号： F02P5/1506 , F02P5/1508 , Y02T10/46
摘要： PROBLEM TO BE SOLVED: To reduce exhaust emission in an extremely early stage in engine startup from a first combustion to idle operation start in order to comply latest exhaust emission regulations and future exhaust emission regulations as catalyst performance and accuracy of catalyst control are improved and the amount of exhaust emission in engine startup is dominant as to the exhaust emissions from an engine.
SOLUTION: The control apparatus for the engine includes a means for retarding an ignition timing from an MBT (minimum advance for the best torque) by a predetermined value or more during cranking at engine start or during a period from the first combustion up to an idling engine speed.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了在发动机启动的极早期从第一次燃烧到怠速运行开始，减少废气排放，以符合最新的废气排放法规和未来废气排放规定作为催化剂性能和催化剂控制的准确性发动机启动中废气排放量的改善和发动机废气排放量占主导地位。解决方案：发动机的控制装置包括一个装置，用于在发动机起动期间或在从第一次燃烧期间起动期间，将来自MBT的点火正时（最佳转矩的最小提前）延迟预定值或更多怠速发动机转速。版权所有（C）2009，JPO＆INPIT

18. 发明专利

JP2008291847A Prime mover 审中-公开
标题翻译：原动机
公开(公告)号：JP2008291847A
公开(公告)日：2008-12-04
申请号：JP2008162664
申请日：2008-06-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IBAMOTO MASAHIKO , KUROIWA HIROSHI , OSUGA MINORU , KATOGI KOZO , ICHIHARA TAKANOBU , SHIMIZU SHUICHI , ABE MOTOYUKI , SHIRAISHI TAKUYA
IPC分类号： F02B75/02 , F02B23/00 , F02B33/22 , F02B33/44 , F02B53/00 , F02B75/18 , F02D15/00 , F02D23/00 , F04B41/04
CPC分类号： Y02T10/125 , Y02T10/144 , Y02T10/17
摘要： PROBLEM TO BE SOLVED: To enable an actuator positioned in a combustion chamber to make reciprocating motion or rotary motion, by burning and exploding combustion gas, after supplying the combustion gas compressed to high pressure in the combustion chamber in the specific timing of the latter half of an exhaust stroke of an engine. SOLUTION: When a piston operating in the combustion chamber approaches a specific position before the top dead center of the exhaust stroke, an air-fuel mixture composed of high pressure air and fuel is supplied to the combustion chamber, and afterwards, the air-fuel mixture is exploded and burnt in the specific position, and the piston is operated in the specific direction. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了使位于燃烧室中的致动器能够通过燃烧和爆炸燃烧气体来进行往复运动或旋转运动，在将燃烧室中的压缩至高压的燃烧气体在特定时刻发动机的排气冲程的后半部分。解决方案：当在燃烧室中运行的活塞接近排气冲程上死点前的特定位置时，将由高压空气和燃料构成的空气 - 燃料混合物供应到燃烧室，之后，空气 - 燃料混合物在特定位置分解并燃烧，并且活塞沿特定方向操作。版权所有（C）2009，JPO＆INPIT

19. 发明专利

JP2008267239A Engine speed control device 有权
标题翻译：发动机速度控制装置
公开(公告)号：JP2008267239A
公开(公告)日：2008-11-06
申请号：JP2007109980
申请日：2007-04-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATOGI KOZO , KANETOSHI KAZUHIKO , ICHIHARA TAKANOBU , TAKAMURA HIROYUKI
IPC分类号： F02D41/04 , F02D41/06 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To meet a requirement of measuring in a reference operational state for acquiring a torque step at each cylinder by defining the reference operational state to reduce causes for generating rotation fluctuation, when a correction amount corresponding to the torque step from the rotation fluctuation by measuring the rotation fluctuation corresponding to the torque generated in each cylinder.
SOLUTION: In a control device for controlling a speed of an engine, the engine speed is measured to calculate a parameter indicating fluctuation in engine speed, and a fuel injection amount supplied to each cylinder of the engine is controlled according to the parameter, thus suppressing the fluctuation in engine speed.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了满足在参考操作状态下测量的要求，用于通过限定基准操作状态来减少产生旋转波动的原因来获取每个气缸处的扭矩阶跃，当对应于扭矩步骤的校正量通过测量与每个气缸中产生的转矩相对应的旋转波动，从旋转波动。解决方案：在用于控制发动机速度的控制装置中，测量发动机转速以计算发动机转速的变动的参数，根据参数控制供给发动机的每个气缸的燃料喷射量，从而抑制发动机转速的波动。版权所有（C）2009，JPO＆INPIT

20. 发明专利

JP2006316708A Engine control device 审中-公开
标题翻译：发动机控制装置
公开(公告)号：JP2006316708A
公开(公告)日：2006-11-24
申请号：JP2005140559
申请日：2005-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAOKA SHIRO , SUKEGAWA YOSHIHIRO , TOKUYASU NOBORU , IGARASHI SHINYA , FUKATSU KATSUAKI , KADOHIRO TAKASHI , IWAKI HIDEFUMI , ICHIHARA TAKANOBU
IPC分类号： F02D45/00 , F02D21/08 , F02D41/04 , F02D43/00 , F02M25/07
CPC分类号： F02D41/307 , F02D41/0007 , F02D41/0072 , F02D41/107 , F02D41/1456 , F02D41/18 , F02D41/222 , F02D41/3035 , F02D41/3076 , F02D2041/0075 , F02D2200/501 , F02D2200/602 , F02D2250/28 , F02M26/05 , F02M26/47 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To solve a problem in an engine having a premixed combustion mode that estimation accuracy of an EGR flow rate is deteriorated in transition and torque variations and emission deterioration are caused. SOLUTION: An engine control device has the premixed combustion mode and a diffusion combustion mode, has a sensor disposed in an EGR flow passage of the engine for detecting the EGR flow rate, and estimates the cylinder condition of the engine in the premixed combustion mode of the engine by using an output value of the sensor detecting the EGR flow rate. The EGR flow rate in transition can be accurately detected and this can be fed back highly responsively so that the torque variations and the emission deterioration can be prevented. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：为了解决在具有过渡期间EGR流量的估计精度劣化，转矩变动和排放恶化的预混燃烧模式的发动机中的问题。解决方案：发动机控制装置具有预混合燃烧模式和扩散燃烧模式，传感器设置在用于检测EGR流量的发动机的EGR流路中，并且在预混合中估计发动机的气缸状况通过使用检测EGR流量的传感器的输出值进行发动机的燃烧模式。可以精确地检测转换中的EGR流量，并且能够高度响应地反馈，从而可以防止扭矩变化和排放恶化。版权所有（C）2007，JPO＆INPIT

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