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1. 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

2. 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

3. 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

4. 发明专利

JP2014062484A Prechamber gas engine 有权
标题翻译：前置气体发动机
公开(公告)号：JP2014062484A
公开(公告)日：2014-04-10
申请号：JP2012207340
申请日：2012-09-20
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： ODA YUJI , TANAKA KENGO , YUNOKI AKIHIRO
IPC分类号： F02B19/18 , F02B19/12
CPC分类号： F02B19/18 , F02B19/12 , F02B23/101 , F02D19/02 , Y02T10/125 , Y02T10/32
摘要： PROBLEM TO BE SOLVED: To provide a prechamber gas engine such that occurrences of knocking are suppressed.SOLUTION: A prechamber gas engine (1) includes a cylinder (2), a cylinder head (4), a piston (6) defining a main combustion chamber (10) with the cylinder head, a prechamber cap (8) with a precombustion chamber (20) defined therein, having a plurality of injection holes (16) communicating the precombustion chamber and the main combustion chamber with each other, an air supply valve (12) for opening and closing an air supply port (13) formed on the cylinder head, and an exhaust valve (14) for opening and closing an exhaust port (15) formed on the cylinder head. In a plane view as seen from below the cylinder head, at least one supply side injection hole (16b) and at least one exhaust side injection hole (16a) are present, and the total injection hole area of the supply side injection holes is larger than the total injection hole area of the exhaust side injection holes.
摘要翻译：要解决的问题：提供一种预燃气体发动机，以便抑制爆震的发生。解决方案：前燃气发动机（1）包括气缸（2），气缸盖（4），活塞（6），其限定主体具有气缸盖的燃烧室（10），具有限定在其中的预燃室（20）的前室罩（8），具有将预燃室和主燃烧室彼此连通的多个喷射孔（16），空气用于打开和关闭形成在气缸盖上的供气口（13）的供应阀（12）和用于打开和关闭形成在气缸盖上的排气口（15）的排气阀（14）。在从气缸盖的下方观察的平面图中，存在至少一个供给侧喷射孔（16b）和至少一个排气侧喷射孔（16a），供给侧喷射孔的总喷射孔面积较大比排气侧喷射孔的总喷射孔面积大。

5. 发明专利

JP2013137003A Combustion control device for gas engine 有权
标题翻译：燃气发动机燃烧控制装置
公开(公告)号：JP2013137003A
公开(公告)日：2013-07-11
申请号：JP2011289213
申请日：2011-12-28
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： TANAKA KENGO
IPC分类号： F02P5/152 , F02D19/02 , 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： PROBLEM TO BE SOLVED: To advance an ignition point at each cylinder to a maximum extent while suppressing knocking at all cylinders with a simple and inexpensive means so as to improve the output and the thermal efficiency of a gas engine.SOLUTION: In a first calculation part 32, a knocking limit ignition point Tia of a representative cylinder 14a is calculated on the basis of cylinder internal pressure waveforms. In a second calculation part 34, a quantity of operation state and engine basic specifications are assigned to an equation (1) for obtaining a knocking limit ignition point Tia' of the representative cylinder 14a. In a third calculation part 36, the knocking limit ignition points Tia and Tia' are compared with each other for obtaining a correction coefficient C. In a fourth calculation part 38, knocking limit ignition points Tib to Tif of the other cylinders except the representative cylinder 14a are calculated on the basis of the obtained correction coefficient C. Preferably, in the fourth calculation part 38, the correction coefficient C is adjusted for each of the cylinders on the basis of test data obtained with a test engine of the same type as the gas engine 10.
摘要翻译：要解决的问题：为了提高燃气发动机的输出和热效率，能够以简单廉价的方式抑制所有气缸的爆震，最大限度地提高各气缸的点火点。解决方案：在第一计算第32部分，基于气缸内部压力波形计算代表气缸14a的爆震极限点燃点Tia。在第二计算部34中，将用于获得代表性气缸14a的爆震极限点燃点Tia'的等式（1）分配给操作状态量和发动机基本规格。在第三计算部件36中，将爆震极限点火点Tia和Tia'彼此进行比较以获得校正系数C.在第四计算部分38中，除了代表性气缸之外的其它气缸的爆震极限点火点T t to Tif 基于获得的校正系数C计算14a。优选地，在第四计算部38中，基于用与具有相同类型的测试引擎获得的测试数据，针对每个气缸来调整校正系数C 燃气发动机10。

6. 发明专利

JP2011112037A Fuel injection device of diesel engine 审中-公开
标题翻译：柴油发动机燃油喷射装置
公开(公告)号：JP2011112037A
公开(公告)日：2011-06-09
申请号：JP2009272158
申请日：2009-11-30
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： TANAKA KENGO , HOTTA KAZURO
IPC分类号： F02M45/00 , F02D1/02 , F02D41/22 , F02D41/38 , F02M37/00 , F02M47/00 , F02M59/36 , F02M59/46 , F02M65/00
CPC分类号： Y02T10/123
摘要： PROBLEM TO BE SOLVED: To enhance further NOx reduction and fuel consumption rate improvement through the application of operation of injection rate control with a shelf in an operation range suitable for the injection rate control with a shelf, and improve reliability of the fuel injection rate control with a shelf by executing avoidance control through the detection of abnormalities when a cylinder not surely performing the fuel injection rate control with a shelf exists. SOLUTION: A fuel injection device 2 which contains a fuel injection valve 4 for injecting fuel and a first and second solenoid valves 18, 20 in a first and second return pipes 14, 16 for returning fuel to a fuel tank 8, is equipped with a control device 38 for executing fuel injection with a shelf forming a shelf part for stagnating injection pressure for a given period with respect to fuel injection pressure injected from a fuel injection valve 4 by closing the second solenoid valve 20 and then the first solenoid valve 18 after certain timing, and switches between injection with a shelf and normal injection based on an engine rotation speed and engine load. When abnormalities are detected in an area of injection with a shelf, the operating condition is switched to the normal injection. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：通过在适用于具有搁板的喷射速率控制的操作范围内使用具有搁板的喷射速率控制的操作来提高进一步的NOx还原和燃料消耗率提高，并且提高燃料的可靠性存在不能确定地执行燃料喷射速度控制的气缸时，通过检测异常来执行回避控制，通过执行避免控制。解决方案：一种燃料喷射装置2，其包含用于喷射燃料的燃料喷射阀4和用于将燃料返回到燃料箱8的第一和第二返回管14,16中的第一和第二电磁阀18,20，配备有用于执行燃料喷射的控制装置38，其中货架形成用于通过关闭第二电磁阀20关闭从燃料喷射阀4喷射的燃料喷射压力而使给定时间段停留一段时间的喷射压力的搁架部分，然后第一螺线管阀门18在一定时间之后，并且基于发动机转速和发动机负荷在搁板注射和正常注射之间切换。当在具有搁板的注射区域中检测到异常时，将操作条件切换到正常注入。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2010065610A Air supply device of engine with egr device and engine having the same 审中-公开
标题翻译：具有EGR装置的发动机的空气供应装置和具有该装置的发动机
公开(公告)号：JP2010065610A
公开(公告)日：2010-03-25
申请号：JP2008232739
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： F02M25/07 , F02F1/42
CPC分类号： Y02T10/121
摘要： PROBLEM TO BE SOLVED: To make EGR gas always smoothly flow in an air supply port, by holding the relationship of exhaust pressure of an engine>air supply pressure of the engine, without using a means for reducing engine performance such as an opening adjustment of a throttle valve, in a diesel engine with an EGR device.
SOLUTION: By selecting two cylinders of becoming large in a pressure difference (P1-P2) between the exhaust pressure P1 when supplying EGR gas of a certain cylinder along the ignition timing of respective cylinders and the air supply pressure P2 of the other cylinder along order of the ignition timing, an EGR taking-out part is arranged on the exhaust side of one cylinder among the cylinders, and an EGR introducing part is arranged on the air supply side of the other cylinder, and the EGR taking-out part and the EGR introducing part of the two cylinders are connected by an EGR passage.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了使EGR气体始终平稳地流入空气供给口，通过保持发动机的排气压力与发动机的供气压力之间的关系，而不使用用于降低发动机性能的装置，例如具有EGR装置的柴油发动机中节流阀的开度调节。解决方案：通过沿着各个气缸的点火正时向特定气缸供给EGR气体和另一气缸的空气供应压力P2之间选择在排气压力P1之间的压差（P1-P2）变大的两个气缸气缸沿着点火正时的顺序，在气缸中的一个气缸的排气侧设置有EGR取出部，在另一个气缸的供气侧配置EGR导入部，将EGR取出两个气缸的EGR引入部分通过EGR通道连接。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2008208803A Multi-cylinder engine with exhaust gas temperature control device and its operation control method 有权
标题翻译：具有排气温度控制装置的多缸发动机及其操作控制方法
公开(公告)号：JP2008208803A
公开(公告)日：2008-09-11
申请号：JP2007048147
申请日：2007-02-27
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： TANAKA KENGO , TAZOE MASUO
IPC分类号： F02D41/04 , F02D41/02 , F02D41/40 , F02D45/00
CPC分类号： Y02T10/44 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide a multi-cylinder engine capable of preventing variation of exhaust gas temperature among cylinders or variation of exhaust gas temperature among superchargers of an engine having the multiple superchargers so as to improve NOx reduction effect and to realize stable engine performance. SOLUTION: The multi-cylinder engine 100 with an exhaust gas temperature control device includes an exhaust gas sensor 1 which detects the exhaust gas temperature at an outlet of each cylinder, and a fuel injection controller 10 which calculates, based on a detected value of the exhaust gas temperature from the exhaust gas temperature sensor, a fuel injection timing adjustment amount and a fuel injection period adjustment amount corresponding to a deviation between the detected exhaust gas temperature value of each cylinder and a predetermined exhaust gas temperature reference value, so as to control the fuel injection timing and the fuel injection period of the engine so that the exhaust gas temperature of each cylinder becomes equal to the exhaust gas temperature reference value, based on the fuel injection timing adjustment amount and the fuel injection period adjustment amount. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决方案：提供一种能够防止气缸内排气温度变化的多气缸发动机，或者具有多台增压器的发动机的增压器之间的排气温度的变化，以提高NOx还原效果，并实现稳定的发动机性能。解决方案：具有废气温度控制装置的多气缸发动机100包括检测每个气缸的出口处的排气温度的废气传感器1和基于检测到的燃料喷射控制器10计算的燃料喷射控制器10 来自排气温度传感器的废气温度的值，燃料喷射正时调整量和与每个气缸的检测到的排气温度值与预定排气温度基准值之间的偏差相对应的燃料喷射周期调节量，因此为了控制燃料喷射正时和发动机的燃料喷射时间，使得每个气缸的排气温度基于燃料喷射正时调整量和燃料喷射时段调节量而变得等于排气温度基准值。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2005307779A Variable swirl mechanism and variable swirl control method of diesel engine 审中-公开
标题翻译：柴油发动机的可变旋转机构和可变开关控制方法
公开(公告)号：JP2005307779A
公开(公告)日：2005-11-04
申请号：JP2004122947
申请日：2004-04-19
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： TANAKA KENGO , UEDA HIROYUKI , KAWASHIMA MOTOI , HONMA YASUYUKI
IPC分类号： F02B31/00
CPC分类号： Y02T10/146
摘要： PROBLEM TO BE SOLVED: To provide a variable swirl mechanism for a diesel engine capable of materializing both improvement in fuel efficient and reduction in a smoke discharging amount.
SOLUTION: In the variable swirl mechanism of a diesel engine in which a swirl varying in accordance with running conditions is formed in a cylinder 1 of a diesel engine so as to supply air, a valve element 5 for changing the centroid of an opening is provided to an inlet 4a of an intake port 4.
COPYRIGHT: (C)2006,JPO&NCIPI

10. 发明专利

JP2004197623A Combustion control device for gas engine 有权
标题翻译：燃气发动机燃烧控制装置
公开(公告)号：JP2004197623A
公开(公告)日：2004-07-15
申请号：JP2002365936
申请日：2002-12-17
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： TANAKA KENGO , ENDO HIROYUKI
IPC分类号： F02P11/02 , F02B11/00 , F02B19/16 , F02B43/02 , F02D19/10 , F02D29/06 , F02D41/02 , F02D45/00 , F02M21/02 , F02M37/00 , F02M61/14
CPC分类号： Y02T10/12 , Y02T10/123 , Y02T10/125 , Y02T10/32
摘要： PROBLEM TO BE SOLVED: To substantialize stable combustion over the entire driving region of a gas engine equipped with an ignition plug and a fuel injection valve for oil fuel injection inside a sub chamber, and to improve durability of the ignition plug by preventing deterioration by high temperatures of the ignition plug in high load region of the engine.
SOLUTION: The combustion control device for the gas engine is equipped with the ignition plug for igniting and combusting sub chamber gas inside a sub chamber, and the fuel injection valve for injecting oil fuel inside the sub chamber. The device is provided with an electromagnetic valve for opening/closing a sub chamber gas supplying passage, an engine driving state detection means for detecting the driving state of the engine, and a controller for supplying or shutting off fuel gas to the sub chamber by opening/closing the electromagnetic valve according to the detected value of the engine driving state, and controlling operation or shutting down of operation of the ignition plug and shutting down and operating of fuel injection systems including the fuel injection valve.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了在配备有火花塞的燃气发动机的整个驱动区域和在子室内的油燃料喷射的燃料喷射阀的整个驱动区域实质化，并且通过防止火花塞提高火花塞的耐久性发动机高负荷区域火花塞的高温劣化。解决方案：用于燃气发动机的燃烧控制装置配备有用于点燃和燃烧副室内的副室气体的火花塞，以及用于在副室内喷射油燃料的燃料喷射阀。该装置设置有用于打开/关闭副室气体供给通道的电磁阀，用于检测发动机的驱动状态的发动机驱动状态检测装置，以及通过打开向副室供应或关闭燃料气体的控制器根据发动机驱动状态的检测值关闭电磁阀，控制火花塞的动作或关闭动作，关闭包括燃料喷射阀的燃料喷射系统的动作。版权所有（C）2004，JPO＆NCIPI

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