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61. 发明专利

JPS62170753A ENGINE CONTROL DEVICE 失效
公开(公告)号：JPS62170753A
公开(公告)日：1987-07-27
申请号：JP1196486
申请日：1986-01-24
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： UEHARA AIICHI , HAYASAKA MASAYOSHI , HORI TOSHIO
IPC分类号： F02D41/20 , F02D9/02 , F02D41/00
摘要： PURPOSE:To perform a stable idling engine speed control, by employing a means for compensating a control duty value based on the value of current applied to a load, thereby determining the minimum duty value based on the current value. CONSTITUTION:In a duty signal generating device 4, a duty value to a duty valve 3 is increased/decreased in response to an idling engine speed and the opening degree of a throttle valve 1 from a carburetor 6 is increased/decreased in a diaphragm type actuator 2, thus the fuel quantity to an engine 7 is increased/decreased so as to constantly maintain the idling engine speed. When the engine speed rises resulting in reducing of the control duty value, the reduction of the control duty is stopped at the time when, for example, the equation of I=IA-DELTAI, wherein I is a load current detected a load current detecting device 5, IA is operated based on a current value detected in the state that the fluctuation of the engine speed becomes lower and DELTAI is a value changed in response to the engine load. Therefore, it is possible to perform an ISC control with the fluctuation of a temperature and a power source voltage.

62. 发明专利

JPS60249656A DOUBLE CARBURETOR 失效
公开(公告)号：JPS60249656A
公开(公告)日：1985-12-10
申请号：JP10461384
申请日：1984-05-25
申请人： HITACHI LTD
发明人： UJIIE KENJIROU , ROKUHARA MAKOTO , SEKI YOSHINORI , HORI TOSHIO , NOUZUKA HIROBUMI
IPC分类号： F02M11/02
摘要： PURPOSE:To prevent the delay of the operation of a throttle valve by driving a throttle valve in the secondary-side bore by a servodiaphragm operated by the synthetic pressure of the pressure of a large venturi in the primary-side bore and the pressure of a common venturi in the secondary-side bore. CONSTITUTION:A double carburetor is equipped with large venturies 2a and 2b and the primary side bore 1a and the secondary side bore 1b into which throttle valves 3a and 3b are housed on the downstream side of the venturies. In this case, the pressure introduced into the pressure chamber 5 of a servodiaphragm 4 which drives the secondary-side throttle valve 5b is the synthetic pressure of the pressure supplied from a jet 6a opened at the narrowest part of the large venturi 2a in the primary-side bore 1a and the pressure supplied from a jet 8b opened at the narrowest part of the common venturi 7b in the secondary-side bore 1b. Therefore, the reduction of the synthetic pressure in the case when the primary and the secondary side throttle valves 3a and 3b are perfectly opened is suppressed, and the delay of the operation of the secondary-side throttle valve 3b is prevented.

63. 发明专利

JP2010077838A High-pressure fuel pump control device for engine 有权
标题翻译：发动机高压燃油泵控制装置
公开(公告)号：JP2010077838A
公开(公告)日：2010-04-08
申请号：JP2008244784
申请日：2008-09-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURASHIMA YOSHIKUNI , HORI TOSHIO , TOYOHARA MASAHIRO
IPC分类号： F02D41/32 , F02M47/00 , F02M55/00 , F02M55/02 , F02M69/00
摘要： PROBLEM TO BE SOLVED: To provide a high-pressure fuel pump for an engine, capable of maintaining fuel pressure within a common rail within a desired pressure range without raising it, even in a case where a required fuel amount of an engine is smaller than a minimum fuel amount to be discharged through a high-pressure fuel pump. SOLUTION: Comparison is made between a minimum fuel amount to be discharged through the high-pressure fuel pump and a fuel supply amount injected and supplied from a fuel injection valve, and when the minimum fuel amount to be discharged is substantially equal to or greater than the fuel supply amount, a fuel relief valve provided on the common rail is opened or the opening degree thereof is increased. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于发动机的高压燃料泵，即使在发动机的所需燃料量的情况下，也能够将共轨内的燃料压力保持在期望压力范围内而不使其升高小于通过高压燃料泵排出的最小燃料量。解决方案：比较通过高压燃料泵排出的最小燃料量和从燃料喷射阀喷射和供给的燃料供给量，并且当要排出的最小燃料量基本上等于或大于燃料供给量时，设置在共轨上的燃料安全阀打开或其开度增大。版权所有（C）2010，JPO＆INPIT

64. 发明专利

JP2010025102A Control diagnostic system of internal combustion engine 审中-公开
标题翻译：内燃机控制诊断系统
公开(公告)号：JP2010025102A
公开(公告)日：2010-02-04
申请号：JP2009078003
申请日：2009-03-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IIBOSHI YOICHI , KURASHIMA YOSHIKUNI , HORI TOSHIO , YAMAUCHI SUSUMU , MIURA RYUSEI
IPC分类号： F02D45/00 , F02D41/04 , F02D41/14 , F02D43/00
摘要： PROBLEM TO BE SOLVED: To solve the problem of deteriorating exhaust gas, if abnormality of a high pressure fuel system of an internal combustion engine is not quickly and highly accurately diagnosed. SOLUTION: This control diagnostic system has a pressure increasing fuel balance arithmetic operation means for arithmetically operating a pressure increasing fuel balance in a fuel rail of a period for increasing fuel pressure, and a pressure reducing fuel balance arithmetic operation means for arithmetically operating a pressure reducing fuel balance in the fuel rail of a period for reducing the fuel pressure detected by a fuel pressure detecting means, and distinguishes and diagnoses at least one abnormality of a fuel pump, an air volume detecting means, a fuel pressure sensor and a relief valve based on the pressure increasing fuel balance, the pressure reducing fuel balance, the fuel pressure and a correction quantity of injection control determined in response to a difference between the detected air-fuel ratio and the target air-fuel ratio. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题为了解决废气恶化的问题，如果内燃机的高压燃料系统的异常不能被快速高精度地诊断出来。解决方案：该控制诊断系统具有增压燃油平衡算术运算装置，用于在增加燃料压力的周期的燃料轨中运算加压燃料平衡运算，以及减压燃料平衡算术运算装置，用于运算用于降低燃料压力检测装置检测到的燃料压力的期间的燃料轨道中的减压燃料平衡，并且区分和诊断燃料泵，空气量检测装置，燃料压力传感器和燃料压力传感器的至少一个异常基于增压燃料平衡的减压阀，减压燃料平衡，燃料压力和响应于检测到的空燃比与目标空燃比之间的差异而确定的喷射控制的校正量。版权所有（C）2010，JPO＆INPIT

65. 发明专利

JP2008185035A Engine control device 审中-公开
标题翻译：发动机控制装置
公开(公告)号：JP2008185035A
公开(公告)日：2008-08-14
申请号：JP2008058916
申请日：2008-03-10
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： NAKAGAWA SHINJI , HORI TOSHIO , WATANABE DAISUKE , YOKOYAMA MAKOTO , IIBOSHI YOICHI
IPC分类号： F02D45/00 , F01N3/20 , F01N3/24 , F02D13/02 , F02D41/14
摘要： PROBLEM TO BE SOLVED: To provide an engine control device for determining not only deterioration of an exhaust emission control catalyst equipped in an exhaust passage, but also deterioration of an air-fuel ratio detection means, in a relative short time with high accuracy without worsening exhaust gas. SOLUTION: The engine control device has the exhaust emission control catalyst equipped in the exhaust passage and the air-fuel ratio detection means downstream of the catalyst. The engine control device is constructed to have: an individual cylinder air-fuel ratio control means for controlling an air-fuel ratio of a mixture supplied for combustion in a specific cylinder so that it is different from an air-fuel ratio in another cylinder; and a deterioration determination means for determining deterioration of the catalyst and the air-fuel ratio detection means based on a signal obtained from the air-fuel ratio detection means. The individual cylinder air-fuel ratio control means differentiates the air-fuel ratio of the mixture supplied for combustion only in the specific cylinder from that for the other cylinders and causes periodic vibrations corresponding to, for instance, two rotation cycles of an engine in the air-fuel ratio at an exhaust collecting part upstream of the catalyst in the exhaust passage. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种发动机控制装置，用于在相对短的时间内确定不仅在排气通道中装备的废气排放控制催化剂的劣化，而且还确定空燃比检测装置的劣化精度，而不会使废气恶化。解决方案：发动机控制装置具有排气通道中配备的废气排放控制催化剂和催化剂下游的空燃比检测装置。发动机控制装置构造成：具有：单独的气缸空燃比控制装置，用于控制供给用于特定气缸中的燃烧的混合物的空燃比，使得其与另一气缸中的空燃比不同; 以及劣化确定装置，用于基于从空燃比检测装置获得的信号来确定催化剂和空燃比检测装置的劣化。单独的气缸空燃比控制装置使得仅在特定气缸中供应的用于燃烧的混合物的空燃比与其他气缸的空燃比差异，并引起对应于例如发动机的两个旋转周期的周期性振动在排气通道中的催化剂上游的排气收集部分处的空燃比。版权所有（C）2008，JPO＆INPIT

66. 发明专利

JP2008128034A Control device for internal combustion engine 审中-公开
标题翻译：内燃机控制装置
公开(公告)号：JP2008128034A
公开(公告)日：2008-06-05
申请号：JP2006311333
申请日：2006-11-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IIBOSHI YOICHI , YAMAUCHI SUSUMU , HORI TOSHIO , KURASHIMA YOSHIKUNI , ISHIDA SHINJIRO
IPC分类号： F02D41/04 , F02D45/00 , F02M47/00
摘要： PROBLEM TO BE SOLVED: To reduce an error in a fuel injection amount caused by a delay in movement of fuel in a common rail and prevent deterioration of exhaust gas.
SOLUTION: A movement index indicating the delay of fuel movement in the common rail 126 is calculated by a movement index calculation means 707 based on the fuel injection amount of an injector 112, and the fuel injection amount by the injector 112 is corrected by a pulse width correction means 709 based on the movement index calculated by the movement index calculation means 707.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了减少由于共轨中的燃料的延迟而导致的燃料喷射量的误差，并且防止废气的劣化。解决方案：通过基于喷射器112的燃料喷射量的运动指标计算装置707来计算表示共轨126中的燃料运动延迟的移动指标，并且校正喷射器112的燃料喷射量通过基于由移动指标计算装置707计算出的移动指标的脉冲宽度校正装置709。版权所有：（C）2008，JPO＆INPIT

67. 发明专利

JP2007263127A Fuel control system for engine, and fuel control method for engine 审中-公开
标题翻译：发动机燃油控制系统及发动机燃油控制方法
公开(公告)号：JP2007263127A
公开(公告)日：2007-10-11
申请号：JP2007191078
申请日：2007-07-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SATO SHINYA , NAKAGAWA SHINJI , HORI TOSHIO
IPC分类号： F02D41/10 , F02B37/00 , F02D23/02 , F02D41/02 , F02D45/00
CPC分类号： Y02T10/144
摘要： PROBLEM TO BE SOLVED: To provide a means for achieving enhanced exhaust performance and drivability in a system capable of changing from a stoichiometric operation to a lean-burn operation and vice versa in response to operation conditions by exerting torque-based control to a cylinder injection engine provided with a turbocharger.
SOLUTION: A turbo-lag index is computed on the basis of information on boost pressure or intake-pipe pressure which are directly or indirectly obtained. A throttle opening and a fuel-injection quantity are corrected on the basis of the turbo-lag index so as to obtain desired torque characteristics and exhaust characteristics. Consequently, torque fluctuation in transition, change in torque characteristics, degradation of exhaust, and the like, which are caused by turbo-lag, can be inhibited.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于在能够从化学计量操作变为稀燃操作的系统中实现增强的排气性能和驾驶性能的装置，反之亦然，通过对基于扭矩的控制进行操作，响应于操作条件具有涡轮增压器的气缸喷射发动机。解决方案：基于直接或间接获得的增压压力或进气管压力的信息计算涡轮滞后指数。基于涡轮滞后指数校正节气门开度和燃料喷射量，以获得期望的扭矩特性和排气特性。因此，可以抑制由turbo延迟引起的转矩的转矩变动，转矩特性的变化，排气的劣化等。版权所有（C）2008，JPO＆INPIT

68. 发明专利

JP2007192093A Air fuel ratio sensor diagnosis device for internal combustion engine 有权
标题翻译：用于内燃机的空燃比传感器诊断装置
公开(公告)号：JP2007192093A
公开(公告)日：2007-08-02
申请号：JP2006010274
申请日：2006-01-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAUCHI SUSUMU , IIBOSHI YOICHI , HORI TOSHIO , KURASHIMA YOSHIKUNI
IPC分类号： F02D45/00 , F02D41/22
CPC分类号： Y02T10/40
摘要： PROBLEM TO BE SOLVED: To accurately diagnose the degree of the deterioration and deterioration mode (deterioration in gain, deterioration in response) of an air fuel ratio sensor without causing the deterioration of operability and emission.
SOLUTION: This device is provided with a first response time detection means 209 detecting a response time T1 until a detection value of a linear air fuel ratio sensor 118 reaches a first predetermined value G1, a second response time detection means 210 detecting a response time T2 until the detection value reaches a second predetermined value G2 greater than the first predetermined value G1, a deterioration index operation means 211 operating a first deterioration index and a second deterioration index based on the response time T1 and the response time T2, and a deterioration determination means 214 determining the deterioration of a linear air fuel ratio sensor 118 based on the first deterioration index and the second deterioration index.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了精确地诊断空燃比传感器的劣化程度和劣化模式（增益的劣化，响应恶化）而不会导致可操作性和发射的劣化。解决方案：该装置设置有检测响应时间T1的第一响应时间检测装置209，直到线性空燃比传感器118的检测值达到第一预定值G1，第二响应时间检测装置210检测响应时间T2，直到检测值达到大于第一预定值G1的第二预定值G2，劣化指数运算装置211基于响应时间T1和响应时间T2运行第一劣化指数和第二劣化指数，以及劣化判定单元214，根据第一劣化指标和第二劣化指标，确定线性空燃比传感器118的劣化。版权所有（C）2007，JPO＆INPIT

69. 发明专利

JP2007032357A Catalyst diagnosis device for internal combustion engine and automobile equipped with internal combustion engine including catalyst diagnosis device 审中-公开
标题翻译：用于内燃机的催化剂诊断装置和装有内燃机的汽车，包括催化剂诊断装置
公开(公告)号：JP2007032357A
公开(公告)日：2007-02-08
申请号：JP2005214569
申请日：2005-07-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAUCHI SUSUMU , IIBOSHI YOICHI , HORI TOSHIO , KURASHIMA YOSHIKUNI
IPC分类号： F01N3/20
CPC分类号： F02D41/0295 , F01N11/007 , F01N2550/02 , F02D2200/0814 , Y02A50/2324 , Y02T10/22 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To perform determination of deterioration of a catalyst corresponding to influence of external environment or the like.
SOLUTION: This device includes a reaction speed operation means 208 for operating reaction speed of chemical reaction in an inside of a three-way catalyst from output of an oxygen sensor 125 on a downstream side of the three-way catalyst 120, an OSC index operation means 204 for operating oxygen storage capacity OSC of the three-way catalyst 120 from the oxygen sensor 125 and a linear air fuel ratio sensor 118 on an upstream side of the three-way catalyst 120, and a catalyst deterioration-determining means 209 for determining deterioration of the three-way catalyst 120 based on reaction speed and OSC index.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：进行与外部环境等的影响相对应的催化剂劣化的测定。解决方案：该装置包括反应速度操作装置208，用于在三元催化剂120的下游侧的氧传感器125的输出中操作三元催化剂内部的化学反应的反应速度，用于从氧传感器125和三元催化剂120的上游侧的线性空燃比传感器118操作三元催化剂120的氧储存容量OSC的OSC指标运算装置204，以及催化剂劣化判定装置 209，用于根据反应速度和OSC指数确定三元催化剂120的劣化。版权所有（C）2007，JPO＆INPIT

70. 发明专利

JP2005090460A Engine control device 审中-公开
标题翻译：发动机控制装置
公开(公告)号：JP2005090460A
公开(公告)日：2005-04-07
申请号：JP2003328823
申请日：2003-09-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAGAWA SHINJI , HORI TOSHIO , NAGANO MASAMI
IPC分类号： F02D45/00 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/24 , F01N3/28 , F02D41/04 , F02D41/14
摘要： PROBLEM TO BE SOLVED: To provide an engine control device for optimizing the purification of exhaust gas by accurately diagnosing a lean NOx catalyst with its NOx storing performance and its O 2 storing performance separated from each other and reflecting the diagnosis result on the control of the lean NOx catalyst. SOLUTION: The engine control device has the lean NOx catalyst for storing NOx exhausted from an engine during lean-operation and desorbing and purifying the stored NOx during rich-operation and an O 2 sensor arranged on the downstream side of the lean NOx catalyst. It comprises a means for computing a stored NOx amount A1 of the lean NOx catalyst and a means for computing a stored O 2 amount B1 of the lean NOx catalyst. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种发动机控制装置，其通过以其NOx储存性能及其彼此分离的储存性能精确地诊断贫NOx催化剂来优化废气净化并反映了对贫NOx催化剂的控制的诊断结果。
解决方案：发动机控制装置具有用于在稀薄操作期间从发动机排出的NOx并且在富运行期间解吸和净化所存储的NOx并且布置在其上的O 2 传感器的贫NOx催化剂贫NOx催化剂的下游侧。它包括用于计算贫NOx催化剂的储存NOx量A1的装置和用于计算贫NOx催化剂的储存的O 2 SBA量B1的装置。版权所有（C）2005，JPO＆NCIPI

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