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公开(公告)号：US06363914B1
公开(公告)日：2002-04-02
申请号：US09668668
申请日：2000-09-22
申请人： Keiki Tanabe , Susumu Kohketsu , Seijiro Kotooka
发明人： Keiki Tanabe , Susumu Kohketsu , Seijiro Kotooka
IPC分类号： F02M3304
CPC分类号： F02D41/3827 , F02D41/3836 , F02D2041/3881 , F02M47/027 , F02M63/0003 , F02M63/0005 , F02M2200/40
摘要： An accumulator fuel injection system for controlling an injection rate according to the operating state of an engine comprises: a first accumulation chamber 2 for containing high-pressure fuel supplied by a fuel supply pump 1; a first electromagnetic valve device 4 provided in a fuel passage 30, which connects the first accumulation chamber 2 with a fuel injection valve 8, the first electromagnetic valve switching the fuel passage 30 between a connected state or a disconnected state; a branch passage 32 branched from the fuel passage 30 at downstream side of the first electromagnetic device 4, the branch passage 32 having sufficiently lower constant fuel pressure than fuel pressure in the first accumulation chamber 2; and a second electromagnetic valve device 9 provided in a fuel return passage 33 connecting the fuel injection valve 8 with a fuel tank 10, the second electromagnetic valve device 9 switching fuel, which is injected from the fuel injection valve 8, between an injected state and an uninjected state; and control means 40 for opening the first electromagnetic valve device 4 prior to the opening of the second electromagnetic valve device 9 and then opening the second electromagnetic valve device 9.
摘要翻译： 一种用于根据发动机的运行状态控制喷射速率的蓄能器燃料喷射系统，包括：用于容纳由燃料供给泵1供给的高压燃料的第一蓄积室2; 设置在连接第一蓄积室2和燃料喷射阀8的燃料通路30中的第一电磁阀装置4，第一电磁阀在连接状态或断开状态之间切换燃料通路30; 在第一电磁装置4的下游侧从燃料通路30分支的分支通道32，具有比第一累积室2中的燃料压力更低的恒定燃料压力的分支通路32; 以及第二电磁阀装置9，其设置在将燃料喷射阀8与燃料箱10连接的燃料返回路径33中，第二电磁阀装置9切换从燃料喷射阀8喷射的燃料在喷射状态和 未注射状态 以及用于在打开第二电磁阀装置9之前打开第一电磁阀装置4然后打开第二电磁阀装置9的控制装置40。
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公开(公告)号：US06457453B1
公开(公告)日：2002-10-01
申请号：US09980214
申请日：2001-11-30
申请人： Keiki Tanabe , Susumu Kohketsu , Seijiro Kotooka
发明人： Keiki Tanabe , Susumu Kohketsu , Seijiro Kotooka
IPC分类号： F02B300
CPC分类号： F02M47/027 , F02D41/3809 , F02D41/3836 , F02D41/403 , F02D2041/3881 , F02M45/02 , F02M45/08 , Y02T10/44
摘要： A controller (8) of an accumulator fuel-injection apparatus opens a selector valve (5) for injection rate switching for a short time between auxiliary injection and main injection, the selector valve controlling high-pressure fuel supply from a high-pressure accumulator (3) to a fuel passage (10a) on the downstream side of a check valve (32), whereby a fuel pressure higher than an auxiliary injection pressure and lower than a main injection pressure is formed in the fuel passage on the downstream side of the selector valve (5). By opening, in this state, an on-off valve (7) for injection timing control to start the main injection, a proper pressure higher than the auxiliary injection pressure and lower than the subsequent main injection pressure is established in the initial stage of main injection, improving fuel economy and exhaust-gas characteristic.
摘要翻译： 蓄能器燃料喷射装置的控制器（8）在辅助喷射和主喷射之间打开用于短时间的喷射率切换的选择阀（5），该选择阀控制来自高压蓄能器的高压燃料供给（ 3）到止回阀（32）的下游侧的燃料通路（10a），从而在燃料通路的下游侧形成比辅助喷射压力高于主喷射压力的燃料压力 选择阀（5）。 通过打开，在这种状态下，用于开始主喷射的喷射正时控制的开闭阀（7），在主喷射的初始阶段建立比辅助喷射压力高的压力低于随后的主喷射压力的适当压力 注射，提高燃油经济性和废气特性。
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公开(公告)号：US06360714B1
公开(公告)日：2002-03-26
申请号：US09596528
申请日：2000-06-19
申请人： Seijiro Kotooka , Susumu Kohketsu , Keiki Tanabe
发明人： Seijiro Kotooka , Susumu Kohketsu , Keiki Tanabe
IPC分类号： F02B300
CPC分类号： F02M45/12 , F02M47/027 , F02M55/02 , F02M55/025 , F02M63/0225
摘要： A fuel injector to be used with a low-pressure fuel source and a high-pressure fuel source to provide a two-stage fuel injection has superior responsiveness of fuel pressure control and ease of mounting to an engine. The fuel injector has a housing mounted to a cylinder head of an engine; a fuel injection valve fitted in a first end of the housing and having a first control valve for controlling injection of fuel to a combustion chamber of the engine; a first conduit formed in the housing and having one end connecting with the fuel injection valve and its other end opening in a second end of the housing and connected to a high-pressure fuel source storing high-pressure fuel; a second control valve, fitted to the housing, for controlling a supply of high-pressure fuel to the fuel injection valve by opening and closing the first conduit; a second conduit formed in the housing and having one end connecting with the first conduit downstream of the second control valve and its other end opening in the housing and connected to a low-pressure fuel source storing low-pressure fuel at a low-pressure than the fuel pressure of the high-pressure fuel source; and a check valve fitted in the housing and being disposed to the second conduit, for allowing the inflow of low-pressure fuel from the low-pressure fuel source to the first conduit side. As a result, the dead volume between the second control valve, the check valve and the fuel injection valve is minimized and the responsiveness of fuel pressure control can be improved.
摘要翻译： 与低压燃料源和高压燃料源一起使用以提供两级燃料喷射的燃料喷射器具有优异的燃料压力控制响应性和易于安装到发动机上。 燃料喷射器具有安装到发动机的气缸盖上的壳体; 燃料喷射阀，其安装在所述壳体的第一端中，并具有用于控制向所述发动机的燃烧室喷射燃料的第一控制阀; 第一导管，其形成在壳体中并且具有与燃料喷射阀连接的一端，并且在壳体的第二端部中的另一端开口连接到存储高压燃料的高压燃料源; 第二控制阀，其安装到壳体上，用于通过打开和关闭第一导管来控制向燃料喷射阀的高压燃料供应; 形成在壳体中的第二导管，其一端与第二控制阀下游的第一导管连接，而在壳体中的另一端开口连接到低压燃料源，低压燃料源以低压比储存低压燃料 高压燃料源的燃料压力; 以及安装在所述壳体中并设置在所述第二管道上的止回阀，用于允许将低压燃料从所述低压燃料源流入所述第一管道侧。 结果，第二控制阀，止回阀和燃料喷射阀之间的死体积最小化，并且可以提高燃料压力控制的响应性。
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公开(公告)号：US06840224B2
公开(公告)日：2005-01-11
申请号：US10622691
申请日：2003-07-21
申请人： Keiki Tanabe , Susumu Kohketsu , Shinji Nakayama
发明人： Keiki Tanabe , Susumu Kohketsu , Shinji Nakayama
CPC分类号： F02D41/22 , F02D41/3809 , F02D2041/223 , F02D2041/224
摘要： A pressure-elevating type fuel injecting system selectively injects via injectors fuel stored in a common rail or fuel whose pressure is elevated by a pressure elevating mechanism into a combustion chamber, and comprises a crank angle sensor producing crank pulse signals in accordance with operating states of an engine, a pulse interval calculating unit calculating pulse intervals between respective crank pulse signals, and a determination unit determining the malfunction of the pressure elevating mechanism when a variation of the pulse interval is above a determination threshold.
摘要翻译： 压力升高型燃料喷射系统通过喷射器选择性地将存储在通过压力升高机构升高的共轨或燃料中的燃料喷射到燃烧室中，并且包括根据操作状态产生曲柄脉冲信号的曲轴转角传感器 发动机，计算各个曲柄脉冲信号之间的脉冲间隔的脉冲间隔计算单元，以及当脉冲间隔的变化高于确定阈值时确定压力升高机构的故障的确定单元。
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公开(公告)号：US06378498B2
公开(公告)日：2002-04-30
申请号：US09758944
申请日：2001-01-11
申请人： Susumu Kohketsu , Keiki Tanabe
发明人： Susumu Kohketsu , Keiki Tanabe
IPC分类号： F02M3704
CPC分类号： F02D41/3827 , F02D41/221 , F02D41/222 , F02D41/3836 , F02D2041/223 , F02D2041/224 , F02D2041/227 , F02D2041/3881
摘要： An accumulator type fuel injection system adapted to prevent engine trouble by making a judgement that fuel injection rate switching change-over valves provided correspondingly to fuel injection nozzles in cylinders, a valve for controlling the pressure in a low-pressure accumulator or means for detecting fuel pressures in accumulators gets out of order, and carrying out when any of these parts break down a control operation of a limp-home mode in which a region of an operation of an engine is limited. To provide such an accumulator type fuel injection system, a control means 8 is formed so that, when a judgement that first control valves 5, a second control valve 34 or pressure sensors 3a, 4a for detecting the fuel pressures in the respective accumulators get out of order is given, the control means 8 sets a discharge pressure of a fuel pump 1 not higher than a permissible pressure in a second accumulator 4, and injects a fuel from fuel injection nozzles 9.
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公开(公告)号：US20060118090A1
公开(公告)日：2006-06-08
申请号：US11269517
申请日：2005-11-08
申请人： Keiki Tanabe , Shinji Nakayama , Susumu Kohketsu
发明人： Keiki Tanabe , Shinji Nakayama , Susumu Kohketsu
CPC分类号： F02M57/025 , F02M45/12 , F02M47/027 , F02M59/366 , F02M63/0225
摘要： Immediately before fuel pressure is increased by a pressure-increase mechanism, a pressure-increase control valve of each cylinder is opened in timing that does not overlap the timing of opening of an injection control valve, and the period of time for which the pressure-increase control valves is opened is gradually increased. As a result, it is possible to prevent the quantity of fuel consumed by the pressure-increase mechanism from rapidly increasing when the increase of fuel pressure is started.
摘要翻译： 在通过增压机构增加燃料压力之前，每个气缸的增压控制阀在不与喷射控制阀的打开正时重叠的定时打开，并且压力 - 增加控制阀打开逐渐增加。 结果，当燃料压力的增加开始时，可以防止由增压机构消耗的燃料量迅速增加。
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公开(公告)号：US20060112681A1
公开(公告)日：2006-06-01
申请号：US11264359
申请日：2005-11-01
CPC分类号： F02D41/0275 , F01N3/0807 , F01N3/0842 , F01N3/206 , F01N11/00 , F01N2430/06 , F01N2430/085 , F01N2550/05 , F02D41/1441 , F02D41/22 , F02D41/3836 , F02D41/405 , Y02T10/24 , Y02T10/44 , Y02T10/47
摘要： An exhaust emission control device of an internal combustion engine includes a fuel supply unit provided in a fuel supply passage, for supplying a reducing agent directly to a NOx trap catalytic converter; an addition pressure detection unit for detecting the supply pressure of the reducing agent supplied by the fuel supply unit; and a controller for calculating the amount of NOx adsorbed by the catalytic converter. When the supply pressure of the reducing agent is almost zero, the controller prohibits calculation of NOx adsorption amount depending on the supply of the reducing agent, creates a rich state in a cylinder, carries out calculation of NOx adsorption amount depending on the created rich state, and causes release and reduction of the adsorbed NOx.
摘要翻译： 内燃机的废气排放控制装置包括：燃料供给单元，其设置在燃料供给路径中，用于将还原剂直接供给到NOx捕集催化转化器; 添加压力检测单元，用于检测由燃料供给单元供应的还原剂的供给压力; 以及用于计算催化转化器吸附的NOx的量的控制器。 当还原剂的供给压力几乎为零时，控制器禁止根据还原剂的供给来计算NOx吸附量，在气缸中产生浓的状态，根据所产生的富态进行NOx吸附量的计算 并且引起吸附的NOx的释放和还原。
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公开(公告)号：US07225794B2
公开(公告)日：2007-06-05
申请号：US11269517
申请日：2005-11-08
申请人： Keiki Tanabe , Shinji Nakayama , Susumu Kohketsu
发明人： Keiki Tanabe , Shinji Nakayama , Susumu Kohketsu
IPC分类号： F02M37/04
CPC分类号： F02M57/025 , F02M45/12 , F02M47/027 , F02M59/366 , F02M63/0225
摘要： Immediately before fuel pressure is increased by a pressure-increase mechanism, a pressure-increase control valve of each cylinder is opened in timing that does not overlap the timing of opening of an injection control valve, and the period of time for which the pressure-increase control valves is opened is gradually increased. As a result, it is possible to prevent the quantity of fuel consumed by the pressure-increase mechanism from rapidly increasing when the increase of fuel pressure is started.
摘要翻译： 在通过增压机构增加燃料压力之前，每个气缸的增压控制阀在不与喷射控制阀的打开正时重叠的定时打开，并且压力 - 增加控制阀打开逐渐增加。 结果，当燃料压力的增加开始时，可以防止由增压机构消耗的燃料量迅速增加。
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公开(公告)号：US06792919B2
公开(公告)日：2004-09-21
申请号：US10074496
申请日：2002-02-11
申请人： Susumu Kohketsu , Keiki Tanabe
发明人： Susumu Kohketsu , Keiki Tanabe
IPC分类号： F02M3704
CPC分类号： F02D41/3827 , F02D41/221 , F02D41/222 , F02D41/3836 , F02D2041/223 , F02D2041/224 , F02D2041/227 , F02D2041/3881
摘要： An accumulator type fuel injection system adapted to prevent engine trouble by making a judgement that fuel injection rate switching change-over valves provided correspondingly to fuel injection nozzles in cylinders, a valve for controlling the pressure in a low-pressure accumulator or means for detecting fuel pressures in accumulators gets out of order, and carrying out when any of these parts break down a control operation of a limp-home mode in which a region of an operation of an engine is limited. To provide such an accumulator type fuel injection system, a control means 8 is formed so that, when a judgement that first control valves 5, a second control valve 34 or pressure sensors 3a, 4a for detecting the fuel pressures in the respective accumulators get out of order is given, the control means 8 sets a discharge pressure of a fuel pump 1 not higher than a permissible pressure in a second accumulator 4, and injects a fuel from fuel injection nozzles 9.
摘要翻译： 一种蓄电池式燃料喷射系统，其适用于通过判断与气缸中的燃料喷嘴相对应地设置的燃料喷射率切换切换阀，用于控制低压蓄能器中的压力的阀或用于检测燃料的装置来防止发动机故障 蓄能器中的压力失灵，并且当这些部件中的任何一个分解破坏发动机的操作区域受限制的跛行模式的控制操作时执行。 为了提供这种蓄能式燃料喷射系统，形成控制装置8，以便当判断为检测各个蓄能器中的燃料压力的第一控制阀5，第二控制阀34或压力传感器3a，4a得出时 控制装置8将燃料泵1的排出压力设定为不高于第二蓄能器4中的允许压力，并且从燃料喷射喷嘴9喷射燃料。
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公开(公告)号：US06792917B2
公开(公告)日：2004-09-21
申请号：US10413555
申请日：2003-04-15
申请人： Susumu Kohketsu , Shinji Nakayama , Keiki Tanabe
发明人： Susumu Kohketsu , Shinji Nakayama , Keiki Tanabe
IPC分类号： F02M3704
CPC分类号： F02M45/12 , F02D41/3836 , F02D41/401 , F02M45/04 , F02M51/061 , F02M57/025 , F02M59/105 , Y02T10/44
摘要： A pressure-elevating type fuel injecting system pressurizes high pressure fuel from a pressure accumulating chamber using a pressure-elevating mechanism and injects the pressure-elevated fuel into combustion chambers by injectors. The pressure-elevating type fuel injecting system comprises a target fuel injection quantity setting unit which sets a target fuel injection quantity, a time difference setting unit which sets a time difference between a timing for opening an injector electromagnetic valve and a timing for operating an pressure-elevating mechanism electromagnetic valve, an initial fuel injection quantity calculating unit calculating an initial fuel injection quantity on the basis of a time-dependent variation of fuel pressure and the time difference, and a final injection period setting unit which calculates an operation period of the injector electromagnetic valve, on the basis of a final fuel injection quantity and the time-dependent variation of the pressure of the pressure-elevated fuel.
摘要翻译： 升压型燃料喷射系统使用升压机构对来自蓄压室的高压燃料加压，并且通过喷射器将升压燃料喷射到燃烧室。 升压型燃料喷射系统包括设定目标燃料喷射量的目标燃料喷射量设定单元，设定打开喷射器电磁阀的定时与操作压力的定时之间的时间差的时间差设定单元 - 升降机构电磁阀，初始燃料喷射量计算单元，基于燃料压力和时间差的时间相关变化来计算初始燃料喷射量，以及最终喷射周期设定单元，其计算 基于最终燃料喷射量和升压燃料的压力随时间变化的喷射器电磁阀。
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