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    • 1. 发明公开
    • 연료 분사 밸브 장치
    • 燃油喷射阀装置
    • KR1020100021664A
    • 2010-02-25
    • KR1020107001280
    • 2009-01-28
    • 미츠비시 쥬고교 가부시키가이샤
    • 요시즈미히로시스즈끼하지메오오따마사따까
    • F02M61/14F02M51/06F02F1/24F02M61/16
    • F02M61/14F02M57/06
    • Provided is an engine, particularly a gas engine, which can be applied not only to a fuel injection valve of a relatively medium or small size but also to a fuel injection valve of a large size and which is enabled, by lowering the temperature near a nozzle seat, to prevent deposition and separation of carbides, thereby to perform the normal fuel injection control of a fuel injection system. A fuel injection valve device comprises a nozzle equipped at its leading end with an injection port for injecting a fuel and a needle valve fitted reciprocally slidably in the inner circumference, and a support body supporting the nozzle and having a cooling member housed therein for cooling the essential portion of the nozzle. The fuel injection valve device is characterized in that the distance (A) between a seat portion of the nozzle and the needle valve for controlling the ON/OFF of the fuel injection and the lowermost face of the nozzle inserting chamber of the support body is made smaller than the distance (B) between the lower end of the fitted portion of the nozzle fitted in the nozzle housing hole formed in the support body and the lowermost face, thereby to suppress the heat input to the seat portion.
    • 提供了一种发动机,特别是燃气发动机,其不仅可以应用于相对中等或小尺寸的燃料喷射阀,而且可以应用于大尺寸的燃料喷射阀,并且能够通过降低接近 喷嘴座,以防止碳化物的沉积和分离,从而执行燃料喷射系统的正常燃料喷射控制。 一种燃料喷射阀装置,包括在其前端装有喷嘴,用于喷射燃料的喷嘴和在内圆周上可滑动地配合的针阀,以及支撑喷嘴并具有容纳在其中的冷却部件,用于冷却 喷嘴的主要部分。 燃料喷射阀装置的特征在于,使喷嘴的座部与用于控制燃料喷射的ON / OFF和支撑体的喷嘴插入室的最下面的针阀之间的距离(A) 小于装配在形成在支撑体上的喷嘴容纳孔中的喷嘴的配合部分的下端与最下面之间的距离(B),从而抑制对座部的输入。
    • 3. 发明公开
    • 가스 엔진 시스템의 제어 방법 및 그 시스템
    • 用于控制气体发动机系统的方法和系统
    • KR1020100007915A
    • 2010-01-22
    • KR1020097024621
    • 2008-11-20
    • 미츠비시 쥬고교 가부시키가이샤
    • 시미즈유우이찌니시오히데끼스즈끼하지메
    • F02D19/02F02D45/00F02D17/02F02M21/02
    • F02M25/0809F02B37/18F02D19/023F02D23/00F02D41/0027F02M21/0284Y02T10/144Y02T10/32
    • A method and a system for controlling a gas engine system, capable of performing highly accurate air-fuel ratio control even for a low calorie fuel gas having a calorific value which tends to easily fluctuate. In the method, air supplied through a supercharger and fuel gas passing through a fuel gas supply pipe and subjected to control by a fuel control valve which controls the amount of supply of the fuel gas are mixed to produce a mixed gas, and the mixed gas is supplied into a combustion chamber. When the fuel gas is a low calorie gas or when an engine output is high, a part of the fuel gas is diverted at that point of the fuel gas supply pipe which is upstream of the fuel flow control valve, and the flow rate of the diverted fuel gas is set to be a specified flow rate less than the flow rate of the fuel gas which is not diverted. Then, the diverted fuel gas is supplied into the combustion chamber through a branch control valve installed in a gas supply branch pipe, the remaining fuel gas is supplied to the fuel flow control valve via a gas supply main pipe, and the amount of fuel gas is controlled so that the mixed gas supplied into the combustion chamber has a predetermined air-fuel ratio. On the other hand, when the fuel gas has high calorie or when the engine output is low, the branch control valve is closed to supply the fuel gas to only the gas supply main pipe.
    • 即使对于具有容易波动的发热量的低热量燃料气体,也能够进行高精度的空燃比控制的燃气发动机系统的控制方法和系统。 在该方法中,通过增压器供给的空气和通过燃料气体供给管的燃料气体被控制燃料气体的供给量的燃料控制阀进行控制,制成混合气体 被供应到燃烧室中。 当燃料气体是低热量气体时,或者当发动机输出高时,一部分燃料气体在燃料流量控制阀的上游的燃料气体供给管的那一点被转向, 转向燃料气体被设定为小于未转向的燃料气体的流量的规定流量。 然后,转向燃料气体通过安装在气体供给支管中的分支控制阀供给到燃烧室,剩余的燃料气体经由气体供给主管供给燃料流量控制阀,燃料气体量 被控制使得供应到燃烧室中的混合气体具有预定的空燃比。 另一方面,当燃料气体具有高卡路里或发动机输出低时,分支控制阀关闭,仅向气体供给主管供给燃料气体。
    • 4. 发明公开
    • 가스 엔진 시스템의 제어 방법 및 그 시스템
    • 燃气发动机系统及其系统控制方法
    • KR1020090130333A
    • 2009-12-22
    • KR1020097024652
    • 2008-11-20
    • 미츠비시 쥬고교 가부시키가이샤
    • 니시오히데끼스즈끼하지메시미즈유우이찌
    • F02M21/02F02M21/04F02B43/00
    • F02D19/027F02D19/023F02D23/00F02D41/0007F02D41/0025F02D41/0027F02D2200/0612F02M21/0215F02M21/0284F02M21/047Y02T10/144Y02T10/32
    • A control method of a gas engine system which can control an air/fuel ratio with high precision even for a low-calorie fuel gas having an easy-to-change colorific value. The gas engine system is also provided. When the fuel gas has a low calorie or the engine output is a heavy load, a part of the fuel gas in a fuel gas passage is branched, the fuel gas branched through a gas supply valve installed on the fuel gas passage and subjected to on/off control is passed through a supercharger-side gas supply passage and supplied to a mixer installed at the air inlet of the supercharger and having a structure for mixing the fuel gas with air at a specified ratio that provides gas concentration at lower flammability limit or below. Mixed gas from the mixer is supplied to the supercharger and the remaining fuel gas is passed through a cylinder-side gas supply passage provided with a gas compressor for compressing fuel gas and supplied to a fuel flow rate control valve which then controls the quantity of fuel gas such that the mixed gas has a predetermined air/fuel ratio. When the fuel gas has high calorie or when the engine output is a light load, the gas supply valve is closed and the fuel gas is supplied only to the cylinder-side gas supply passage.
    • 即使对于具有易变色度的低热量燃料气体也能够高精度地控制空燃比的燃气发动机系统的控制方法。 还提供燃气发动机系统。 当燃料气体具有低卡路里或发动机输出是重负载时,燃料气体通道中的燃料气体的一部分被分支,燃料气体通过安装在燃料气体通道上的气体供给阀分支并经过 /关闭控制通过增压器侧气体供给通道并供给到安装在增压器的进气口处的混合器,并且具有以提供低燃烧极限气体浓度的特定比例将燃料气体与空气混合的结构,或 下面。 来自混合器的混合气体被供给到增压器,剩余的燃料气体通过设置有用于压缩燃料气体的气体压缩机的气缸侧气体供给通道,并被供给到燃料流量控制阀,然后控制燃料量 使得混合气体具有预定的空气/燃料比。 当燃料气体具有高热量时或者当发动机输出为轻负荷时,气体供给阀关闭,并且燃料气体仅供给到气缸侧气体供给通道。
    • 5. 发明公开
    • 마이크로 파일럿 분사식 가스 엔진
    • 微型喷射式气体发动机
    • KR1020090128540A
    • 2009-12-15
    • KR1020097023199
    • 2008-11-20
    • 미츠비시 쥬고교 가부시키가이샤
    • 스즈끼하지메니시오히데끼시미즈유우이찌
    • F02B19/10F02D19/02F02M21/02F02D41/04
    • F02D41/06F02B77/08F02B77/085F02D19/061F02D19/0623F02D19/0631F02D19/10F02D35/023F02D41/0025F02D41/0027F02D41/0087F02D41/1454F02D41/1475F02D41/3047Y02T10/36
    • A micro-pilot injection type gas engine in which, at the start of the engine, operating conditions of the engine are taken into intermittent operation to make the control of the air-fuel ratio at the start of the engine highly accurate and in which the time period required for warm-up operation is reduced or eliminated. The gas engine has an on-off gas valve adapted so as to be able to change the area of a fuel gas path to each cylinder and the time period of opening and closing of the fuel gas path, a rotational speed detector for detecting the speed of the engine, a combustion diagnosis device for detecting combustion conditions of each cylinder of the engine from the pressure in the cylinder, and an intermittent valve operation control device operating according to the speed of the engine. At the start of the gas engine, the intermittent valve operation control device intermittently opens and closes the on-off gas valve according to a detected value of the engine speed, and, based on the detected waveform of the value of the detected combustion conditions of each cylinder obtained from the combustion diagnosis device, the intermittent valve operation control device intermittently opens and closes the on-off gas valve at an opening/closing interval which causes the air-fuel ratio to be a target value.
    • 一种微型引燃喷射式燃气发动机,其特征在于,在发动机起动时,对发动机的运转状态进行间歇运转,使发动机起动时的空燃比控制得到高精度, 预热操作所需的时间减少或消除。 燃气发动机具有开关式气阀,其适于使得能够改变到每个气缸的燃料气体路径的面积和燃料气体路径的打开和关闭的时间段,用于检测速度的转速检测器 发动机的燃烧诊断装置,用于根据气缸内的压力来检测发动机的每个气缸的燃烧状况的燃烧诊断装置,以及根据发动机的速度运行的间歇性气门运转控制装置。 在燃气发动机的起动时,间歇性阀动作控制装置根据发动机转速的检测值间歇地开闭开闭气阀,并且根据检测到的燃烧条件的值的检测波形, 从燃烧诊断装置获得的每个气缸,间歇性阀操作控制装置以使空燃比成为目标值的开/关间隔间歇地打开和关闭通断气阀。
    • 8. 发明公开
    • 엔진의 이상 연소 시 운전 방법 및 운전 제어 장치
    • 异常燃烧和运行控制器发动机的运行方法
    • KR1020080113357A
    • 2008-12-30
    • KR1020087021072
    • 2007-09-26
    • 미츠비시 쥬고교 가부시키가이샤
    • 스즈끼하지메사에끼야스히로이시다이찌로오
    • F02D41/22F02D19/02F02D45/00
    • F02D17/02F02D35/027F02D41/0087G01L23/221
    • An operation method of an engine during abnormal combustion in which operation control of the engine can be performed appropriately after fuel supply interruption to a heavy knock-inflicted cylinder without stopping the engine immediately upon detection of occurrence of heavy knock. An operation controller during abnormal combustion is also provided. The operation method of an engine during abnormal combustion by which the engine is stopped or an output limit operation is performed upon occurrence of abnormal combustion in the engine having a plurality of cylinders capable of correcting the combustion state stepwise or continuously by fuel regulation including fuel interruption, characterized in that an abnormal combustion simulation signal obtained by calculating the abnormal combustion state of the engine simulatively is preset, combustion state detection signal of a cylinder selected sequentially from among the plurality of cylinders is compared with the abnormal combustion simulation signal in order to judge occurrence of abnormal combustion in the selected cylinder, and then fuel supply to the selected cylinder is interrupted. ® KIPO & WIPO 2009
    • 在异常燃烧期间的发动机的操作方法,其中在检测到发生重型敲击之后立即停止发动机,在重型撞击缸的燃料供给中断之后,可以适当地执行发动机的操作控制。 还提供异常燃烧时的操作控制器。 在具有能够通过包括燃料中断的燃料调节逐步或连续地校正燃烧状态的多个气缸的发动机中发生异常燃烧时发动机停止的异常燃烧时的发动机的操作方法或输出限制操作 其特征在于,通过模拟地计算所述发动机的异常燃烧状态而获得的异常燃烧模拟信号被预先设定,将从所述多个气缸中顺次选择的气缸的燃烧状态检测信号与所述异常燃烧模拟信号进行比较,以判断 在所选择的气缸中发生异常燃烧,然后中断对所选气缸的燃料供应。 ®KIPO&WIPO 2009