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1. 发明公开

EP2799708A4 COMBUSTION CONTROL DEVICE FOR GAS ENGINE 审中-公开
标题翻译：内部控制装置的燃气发动机的
公开(公告)号：EP2799708A4
公开(公告)日：2016-05-18
申请号：EP12863802
申请日：2012-12-06
申请人： MITSUBISHI HEAVY IND LTD
发明人： TANAKA KENGO
IPC分类号： F02P5/152 , F02D19/02 , F02D35/02 , F02D41/00 , F02D45/00 , F02M21/02 , F02P5/153
CPC分类号： G01M15/08 , F02B29/0406 , F02D19/02 , F02D35/023 , F02D35/027 , F02D41/0027 , F02M35/1038 , F02P5/04 , F02P5/152 , F02P5/153 , Y02T10/32 , Y02T10/46
摘要： To improve output and thermal efficiency of a gas engine by advancing the ignition timing to a maximum extent while knocking is suppressed, in the plurality of cylinders, by a simple and low-cost means, in a first calculation part 32, a knocking limit ignition timing Tia of a representing cylinder 14a is calculated based on an in-cylinder pressure waveform. In a second calculation part 34, a knocking limit ignition timing Tia' of the representing cylinder 14a is calculated by substituting an operation state quantity and a basic engine specification value into a formula (1). In a third calculation part 36, the knocking limit ignition timings Tia ant Tia' are compared to obtain a correction factor C. In a fourth calculation part 38, based on the obtained correction factor C, the knocking limit ignition timings Tib-Tif of cylinders other than the representing cylinder 14a are calculated. In the fourth calculation part 38, the correction factor C of each of the cylinder is preferably modified based on test data obtained from a test machine of the same type as a gas engine 10.

2. 发明公开

EP2899381A4 PRECHAMBER GAS ENGINE 有权
标题翻译： GASMOTOR MIT VORKAMMER
公开(公告)号：EP2899381A4
公开(公告)日：2015-07-29
申请号：EP13839517
申请日：2013-09-19
申请人： MITSUBISHI HEAVY IND LTD
发明人： ODA YUJI , TANAKA KENGO , YUUKI AKIHIRO
IPC分类号： F02B19/18 , F02B19/12 , F02B23/10 , F02D19/02
CPC分类号： F02B19/18 , F02B19/12 , F02B23/101 , F02D19/02 , Y02T10/125 , Y02T10/32

3. 发明专利

JP2010065609A Control method of engine with egr device and its air supply device 有权
标题翻译：发动机与EGR装置及其空气供应装置的控制方法
公开(公告)号：JP2010065609A
公开(公告)日：2010-03-25
申请号：JP2008232738
申请日：2008-09-10
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： HOTTA KAZURO , TANAKA KENGO
IPC分类号： F02B17/00 , F02B31/00 , F02B31/02 , F02F1/42 , F02M25/07
CPC分类号： Y02T10/121 , Y02T10/146
摘要： PROBLEM TO BE SOLVED: To reduce NOx by supply of EGR gas, and to restrain generation of soot in combustion gas, in a diesel engine with an EGR device. SOLUTION: Supply air is turned by a means for turning the supply air in the specific direction in an air supply port 108, and is supplied to a combustion chamber 103 of the engine. Gas of the low EGR concentration is held by distributing the supply air in an outer peripheral near part of the combustion chamber 103 by centrifugal force generated by turning of the supply air. The EGR gas is input to a central part of the combustion chamber 103, and the EGR concentration of the central part is held in the higher concentration than the outer peripheral near part. and fuel is sprayed thereby in a nonuniform air-fuel mixture from the combustion chamber central part by forming the nonuniform air-fuel mixture in the EGR concentration of the supply air and the EGR gas in the combustion chamber 103. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：在具有EGR装置的柴油发动机中，通过供给EGR气体来减少NOx并且抑制燃烧气体中的烟灰的产生。解决方案：通过在空气供给口108中向特定方向转动供气的装置供给空气，供给到发动机的燃烧室103。通过由供给空气的转动产生的离心力将供给空气分配到燃烧室103的一部分附近的外周而保持低EGR浓度的气体。 EGR气体被输入到燃烧室103的中心部分，并且中心部分的EGR浓度保持在比外部附近更高的浓度。并且通过在燃烧室103中的供给空气和EGR气体的EGR浓度中形成不均匀的空气 - 燃料混合物，燃料从燃烧室中心部分喷射到不均匀的空气 - 燃料混合物中。（COPYRIGHT：（ C）2010，JPO＆INPIT

4. 发明专利

JP2006241986A Fuel injection device for diesel engine 有权
标题翻译：柴油发动机燃油喷射装置
公开(公告)号：JP2006241986A
公开(公告)日：2006-09-14
申请号：JP2005054672
申请日：2005-02-28
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： TANAKA KENGO , ENDO HIROYUKI , OGAWA HISAO
IPC分类号： F02M61/10 , F02D41/38 , F02D41/40 , F02M45/00 , F02M47/04 , F02M51/00 , F02M61/20
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection device for a diesel engine, for increasing injection pressure in high load operation to keep discharged exhaust gas concentration good and improve fuel economy, and suppressing an NOx emission amount in low load.
SOLUTION: In the diesel engine, the fuel injection device comprises: a hydraulic cylinder device changing pressing pressure against a valve seat of a needle valve to change valve opening pressure; a solenoid valve disposed to a working fluid passage to the hydraulic cylinder device to change a passage area of the working fluid passage and thereby change the pressing pressure of the needle valve by the hydraulic cylinder device; and a controller increasing the valve opening pressure along with increase in fuel injection amount of the engine, by changing opening of the solenoid valve along with change in fuel injection amount.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种用于柴油发动机的燃料喷射装置，用于在高负荷运行中增加喷射压力以保持排出的废气浓度良好并提高燃油经济性，并且抑制低负荷下的NOx排放量。解决方案：在柴油发动机中，燃料喷射装置包括：液压缸装置，其改变对针阀的阀座的压力以改变开阀压力; 设置在液压缸装置的工作流体通道上的电磁阀，以改变工作流体通道的通道面积，从而通过液压缸装置改变针阀的按压压力; 以及通过随着燃料喷射量的变化改变电磁阀的开度，控制器随着发动机的燃料喷射量的增加而增加开阀压力。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2006029203A Diesel engine equipped with pilot fuel device and method for operating the same 审中-公开
标题翻译：柴油发动机配有引燃装置及其操作方法
公开(公告)号：JP2006029203A
公开(公告)日：2006-02-02
申请号：JP2004208810
申请日：2004-07-15
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： SATO SHINICHI , TANAKA KENGO , ISONO KENICHI , YAMADA SATORU , ENDO HIROYUKI , ODA YUJI
IPC分类号： F02B23/06 , F02D41/04 , F02D41/38 , F02M45/04 , F02M45/08 , F02M61/04 , F02M61/10 , F02M61/18
CPC分类号： Y02T10/125
摘要： PROBLEM TO BE SOLVED: To provide a diesel engine equipped with a pilot fuel device capable of reducing emission of NOx and soot by avoiding impingement and adhesion of pilot fuel on an inner surface of a cylinder liner and enabling diffuse combustion of main fuel surely injected in a low oxygen zone created by lean combustion of the pilot fuel in a diesel engine performing two-step fuel injection of the pilot fuel injection and main fuel injection. SOLUTION: In the diesel engine equipped with a main fuel injection valve injecting main fuel in a combustion chamber and a pilot fuel injection valve injecting pilot fuel in the combustion chamber, the pilot fuel injection valve has injection angle α 1 of a pilot injection hole for injecting pilot fuel formed smaller then injection angle α 2 of a main injection hole for injecting main fuel of the main fuel injection valve (α 1 2 ), both of fuel spray from the pilot fuel injection valve and fuel spray from the main fuel injection valve are formed in a piston cavity. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种配备有先导燃料装置的柴油发动机，其能够通过避免引燃燃料在气缸套的内表面上的冲击和附着而能够减少NOx和烟灰的排放，并且能够主燃料的扩散燃烧可靠地注入在柴油发动机中通过先导燃料的稀燃燃烧而产生的低氧区，其执行引燃燃料喷射和主燃料喷射的两步燃料喷射。解决方案：在配备有在燃烧室中喷射主燃料的主燃料喷射阀和在燃烧室中喷射引燃燃料的先导燃料喷射阀的柴油机中，引燃燃料喷射阀具有喷射角α 1 用于喷射导向燃料的先导喷射孔的小于主燃料喷射阀主燃料喷射主喷射孔（α 1 <α 2 ），来自先导燃料喷射阀的燃料喷雾和来自主燃料喷射阀的燃料喷雾均形成在活塞腔中。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2000110697A LEAN BURN GAS ENGINE 失效
公开(公告)号：JP2000110697A
公开(公告)日：2000-04-18
申请号：JP28785498
申请日：1998-10-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： TANAKA KENGO , ENDO HIROYUKI , IMAMICHI AKIRA , KAWAMURA KEISUKE , NISHIDA SEIICHI
IPC分类号： F02P3/04 , F02B23/08 , F02P13/00 , H01T15/00
摘要： PROBLEM TO BE SOLVED: To restrain the generation of NOX by widening a spark gap than convential one, applying a high voltage in an ultra short pulse, enhancing ignition performance by combining an intake port strengthened in swirling and thereby increasing burning speed in a lean burn gas engine. SOLUTION: Intake air 300 enters into a combustion chamber 103 from a swirl/tumble strengthened type intake port 105 to be compressed after an intake valve is closed, a high voltage is applied to a spark plug 104 by a pulse power ignition system 109 when a piston 101 reaches its upper dead center to ignite, to burn gas and to exhaust from an exhaust port 107. Since the high voltage in an ultra short pulse shorter in boosting time than conventional one is applied by the pulse power ignition system 109, and the spark gap is widened than conventional one, arc discharge takes place after streamer discharge in a discharge mode, so that ignition performance can be excellent. Since the intake port 105 is so bent as to allow the mixed gas to swirl and tumble in the combustion chamber 103, the generation of NOX can be restrained by means of high ignition performance and combustion of high efficiency.

7. 发明专利

JPH10238417A EGR DEVICE FOR FOUR CYCLE SUPERCHARGED ENGINE 失效
公开(公告)号：JPH10238417A
公开(公告)日：1998-09-08
申请号：JP5416997
申请日：1997-02-21
申请人： MITSUBISHI HEAVY IND LTD
发明人： KATAOKA YOICHI , TANAKA KENGO , NAKAGAWA HIROSHI
IPC分类号： F01M13/00 , F02B75/02 , F02F1/22 , F02M25/07
摘要： PROBLEM TO BE SOLVED: To realize a prescribed EGR in all the operating areas of an engine by introducing EGR gas into a gas trunk provided below a cylinder, compressing the EGR gas during the inlet stroke of a piston and supplying the EGR gas to a combustion chamber from an EGR gas supply passage by lowering the piston. SOLUTION: When an inlet valve 10 is opened in an intake stroke, air supplied (fresh air) from a supercharger 30 is supplied to a combustion chamber 13 simultaneously with the lowering of a piston 12. When the piston 12 is lowered and its lower edge closes a gas supply port 8a, EGR gas supplied to an EGR gas trunk 5 in an exhaust stroke is compressed in the rear side of the piston 12. When gas pressure reaches pressure higher than the pressure set by an EGR gas pressure regulating valve 6, the valve 6 is opened and a part of the EGR gas is discharged to an exhaust pipe 17 side. Further, when the piston 12 is lowered to open the gas supply port 8a, the EGR gas in the EGR gas trunk 5 enters the combustion chamber 13 from an EGR gas supply pipe 8 and is mixed with the fresh air (charging) so as to be used for combustion.

8. 发明专利

JP2012149576A Engine system 有权
标题翻译：发动机系统
公开(公告)号：JP2012149576A
公开(公告)日：2012-08-09
申请号：JP2011009226
申请日：2011-01-19
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： DOBASHI SHINSAKU , TAURA MASAZUMI , TSUKAHARA CHISATO , MANIWA SHIGENOBU , TAKEDA KAZUHIRO , TANAKA KENGO , DOMEKI REIKO , KOMATSU TOMOMI
IPC分类号： F02D19/08 , F02D45/00 , G01N21/63
摘要： PROBLEM TO BE SOLVED: To prevent occurrence of trouble by detecting properties of fuel oil as a fuel to be used online, in a controller for an engine.SOLUTION: In this engine system, a fuel supply system 24 capable of supplying the fuel oil as the fuel stored in a first fuel tank 23A into a fuel chamber 15 from a fuel supply pipe 25 is configured. The engine system includes: a laser analysis device 30 separately taking in a part of the fuel flowing through the fuel supply pipe 25, and detecting an inferior component in the fuel; and a fuel decision unit 51 confirming whether or not the fuel inferior component exceeds a prescribed threshold value as the result of the analysis in the laser analysis device, and deciding quality of the fuel. Based on the decision result of the fuel decision unit, the engine is controlled by the controller 52.
摘要翻译：要解决的问题：为了通过检测作为在线使用的燃料的燃料油的特性来防止发生故障，在发动机的控制器中。解决方案：在该发动机系统中，配置能够将燃料油作为燃料储存在第一燃料箱23A中而从燃料供给管25供给燃料室15的燃料供给系统24。发动机系统包括：激光分析装置30，分别吸入流过燃料供给管25的燃料的一部分，并检测燃料中的劣质成分; 以及作为激光分析装置的分析结果，判定燃料劣质成分是否超过规定阈值的燃料决定部51，决定燃料的质量。根据燃油决策单元的判定结果，发动机由控制器52控制。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2012082766A Method and device for estimating cylinder pressure waveform of internal combustion engine 审中-公开
标题翻译：内燃机缸筒压力波动估计方法及装置
公开(公告)号：JP2012082766A
公开(公告)日：2012-04-26
申请号：JP2010230435
申请日：2010-10-13
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： KUBO HIROYOSHI , TANAKA KENGO
IPC分类号： F02D45/00
CPC分类号： F02D35/024
摘要： PROBLEM TO BE SOLVED: To provide a cylinder pressure waveform estimation method and estimation device for an internal combustion engine for estimating a cylinder pressure wave based on a signal from other detection means without using a cylinder pressure detection means (cylinder pressure sensor) to accurately estimate the cylinder pressure without raising the cost.SOLUTION: The cylinder pressure waveform estimation method includes: a reference pressure waveform calculation means 37 for calculating the reference cylinder pressure waveform at non-combustion of the internal combustion engine without using the cylinder pressure sensor; and a combustion difference pressure waveform calculation means 39 for calculating a combustion difference pressure waveform by connecting waveforms calculated by a combustion difference maximum value calculation means 41 for calculating the combustion difference pressure maximum value, an ascending waveform calculation means 43 for calculating the waveform of an ascending part using a time-lag function, and a descending waveform calculation means 45 for calculating the waveform of a descending part from the combustion difference pressure maximum value based on a calorific value from the amount of fuel consumption, and includes a cylinder pressure waveform calculation means 47 for adding respective waveforms from the reference pressure waveform calculation means 37 and the combustion difference pressure waveform calculation means 39 to calculate the cylinder pressure waveform.
摘要翻译：解决问题：提供一种用于内燃机的气缸压力波形估计方法和估计装置，用于基于来自其它检测装置的信号估计气缸压力波，而不使用气缸压力检测装置（气缸压力传感器）以精确地估计气缸压力而不增加成本。气缸压力波形估计方法包括：基准压力波形计算装置37，用于在不使用气缸压力传感器的情况下计算内燃机的非燃烧时的基准气缸压力波形; 以及燃烧差压波形计算装置39，用于通过由用于计算燃烧差压力最大值的燃烧差最大值计算装置41计算出的波形来计算燃烧差压波形;计算波形的上升波形计算装置43，以及下降波形计算装置45，用于根据来自燃料消耗量的发热量从燃烧差压力最大值计算下降部分的波形，并且包括气缸压力波形计算用于从参考压力波形计算装置37和燃烧差压压力波形计算装置39添加相应波形的装置47，以计算气缸压力波形。版权所有（C）2012，JPO＆INPIT

10. 发明专利

JP2012052554A Intake device of engine with egr device and engine including the same 有权
标题翻译：具有EGR装置的发动机装置和包括其的发动机
公开(公告)号：JP2012052554A
公开(公告)日：2012-03-15
申请号：JP2011271585
申请日：2011-12-12
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： HOTTA KAZURO , TANAKA KENGO
IPC分类号： F02M35/10 , F02D21/08 , F02M25/07
CPC分类号： Y02T10/121
摘要： PROBLEM TO BE SOLVED: To allow EGR gas to always smoothly flow into an intake port, by holding the relationship in which the engine exhaust pressure is greater than the engine intake pressure, without using measures causing reduction in engine performance such as opening adjustment of a throttle valve in a diesel engine with an EGR device.SOLUTION: An exhaust port 109 of a cylinder is provided with an EGR taking part. An intake port 108 of the cylinder is provided with an EGR inlet part. A common EGR distribution chamber 1 connected to each EGR taking part and each EGR inlet part is provided. Each EGR taking passage and each EGR inlet passage are provided with electromagnetic valves 6a to 6f. An electromagnetic valve control device 5 performing the opening and closing control of the electromagnetic valves along the exhaust timing and the intake timing of each cylinder is provided.
摘要翻译：要解决的问题：为了使EGR气体始终平稳地流入进气口，通过保持发动机排气压力大于发动机进气压力的关系，而不采取引起发动机性能下降的措施，例如开启用EGR装置调节柴油发动机中的节气门。解决方案：气缸的排气口109设置有EGR进气部分。气缸的进气口108设有EGR入口部分。连接到每个EGR采集部分和每个EGR进气部分的公共EGR分配室1。每个EGR采取通道和每个EGR入口通道设有电磁阀6a至6f。提供一种电磁阀控制装置5，该电磁阀控制装置5沿着每个气缸的排气定时和进气正时进行电磁阀的打开和关闭控制。版权所有（C）2012，JPO＆INPIT

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