公开(公告)号：US06543420B2

公开(公告)日：2003-04-08

申请号：US10108894

申请日：2002-03-29

申请人： Susumu Kohketsu ,  Keiki Tanabe ,  Shinji Nakayama

发明人： Susumu Kohketsu ,  Keiki Tanabe ,  Shinji Nakayama

IPC分类号： F02M4502

CPC分类号： F02D41/3836 ,  F01N13/009 ,  F01N2250/02 ,  F02B3/06 ,  F02D41/3854 ,  F02D41/405 ,  F02D2041/3881 ,  F02D2041/389 ,  F02D2200/0602 ,  F02D2200/602 ,  F02D2250/31 ,  F02M45/02 ,  F02M47/027 ,  Y02T10/44

摘要： In a common rail system comprised of a first accumulator storing high-pressure fuel and a second accumulator storing low-pressure fuel, additional fuel is injected when a fuel pressure in a fuel passage or in the second accumulator (low inlet pressure of an injector) is reduced to a low pressure approximate to the pressure of the low-pressure fuel stored in the second accumulator after a switching valve is operated for disconnection from the fuel passage (switching valve drive signal OFF) at a point in time when a main injection control device finishes the injection of fuel (injector drive signal OFF) or after the main injection control device finishes the injection of fuel. This keeps the fuel pressure as low as possible during post injection to prevent the fuel from adhering to the wall surfaces of cylinder liners.

公开(公告)号：US06684856B2

公开(公告)日：2004-02-03

申请号：US10294893

申请日：2002-11-15

申请人： Keiki Tanabe ,  Shinji Nakayama ,  Susumu Kohketsu

发明人： Keiki Tanabe ,  Shinji Nakayama ,  Susumu Kohketsu

IPC分类号： F02M3704

CPC分类号： F02M59/105 ,  F02D41/187 ,  F02D41/3836 ,  F02D2041/3881 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2250/31 ,  F02M55/00 ,  F02M63/0225

摘要： By setting a switching timing of switching means that connects either one of a high pressure fuel source and a low pressure fuel source to an injector earlier than a point of time when an injector finishes a high pressure fuel injection, leak fuel or return fuel is reduced and an engine load is reduced and therefore mileage is improved.

摘要翻译： 通过将喷射器完成高压燃料喷射时的时间点设定为将高压燃料源和低压燃料源中的任一个连接到喷射器的切换装置的切换时刻，减少了泄漏燃料或返回燃料 并且减少发动机负荷，因此提高了里程。

公开(公告)号：US06672279B2

公开(公告)日：2004-01-06

申请号：US10116065

申请日：2002-04-05

申请人： Shinji Nakayama ,  Susumu Kohketsu ,  Keiki Tanabe

发明人： Shinji Nakayama ,  Susumu Kohketsu ,  Keiki Tanabe

IPC分类号： F02M3704

CPC分类号： F02M63/0225 ,  F01N3/0231 ,  F01N3/035 ,  F01N13/009 ,  F01N2250/02 ,  F02B3/06 ,  F02D41/029 ,  F02D41/402 ,  F02D2041/3881 ,  F02D2200/0602 ,  F02D2250/11 ,  F02D2250/31 ,  F02M45/00 ,  F02M45/04 ,  F02M47/027

摘要： A common-rail injection system includes a first accumulator of high pressure and a second accumulator of low pressure. The common-rail injection system includes a post injection control device for injecting additional low-pressure fuel from the second accumulator through a fuel injection nozzle after main fuel is injected. The post injection control device injects the additional fuel the injection terminates at a first timing when the fuel pressure in either fuel passage or second accumulator lowers to a predetermined value lower than that of the high-pressure fuel or at a second timing when an exhaust stroke of the engine is completed, whichever earlier.

摘要翻译： 共轨喷射系统包括高压的第一蓄能器和低压的第二蓄能器。 共轨喷射系统包括后喷射控制装置，用于在主燃料喷射之后通过燃料喷射喷嘴从第二蓄能器喷射附加的低压燃料。 后燃料喷射控制装置在燃料通道或第二蓄能器中的燃料压力降低到低于高压燃料的预定值的第一定时或者当排气冲程的第二定时时，喷射终止的附加燃料喷射终止 的发动机完成，以较早者为准。

公开(公告)号：US06192862B1

公开(公告)日：2001-02-27

申请号：US09444354

申请日：1999-11-18

申请人： Keiki Tanabe ,  Susumu Kohketsu

发明人： Keiki Tanabe ,  Susumu Kohketsu

IPC分类号： F02M700

CPC分类号： F02M47/027 ,  F02B3/06 ,  F02D41/062 ,  F02D41/3827 ,  F02D41/3836 ,  F02D2041/3881 ,  F02D2250/31 ,  F02M63/0225

摘要： After an engine has been started, a controller 8 of a fuel injection system opens an injection rate switching change-over valve 5 for a period of time not less than a fuel injection period until the time a fuel pressure in a low pressure accumulator 4 connected to the portion of a fuel passage 10a which is on the downstream side of the change-over valve 5 has reached a set level, whereby a fuel injection starting delay ascribed to a fuel pressure decrease in the second accumulator can be prevented. After the engine has been started, the controller 8 of the fuel injection system sets the change-over valve opening starting time in each fuel injection cycle to the time earlier than the injector opening starting time, or the opening starting time of both an injector and change-over valve to the time earlier than those in a regular mode until the time the fuel pressure in the low-pressure accumulator 4 connected to the portion of the fuel passage 10a which is on the downstream side of the injection rate switching change-over valve 5 has reached the set level, whereby the fuel injection starting delay can be prevented. Therefore, the engine starting characteristics are improved, and the discharging of white smoke from the engine is prevented.

摘要翻译： 在发动机起动之后，燃料喷射系统的控制器8打开喷射速率切换转换阀5一段不少于燃料喷射时间的时段，直到连接的低压蓄能器4中的燃料压力 在转向阀5的下游侧的燃料通路10a的部分已经达到设定水平，从而能够防止因第二蓄能器的燃料压力下降而导致的燃料喷射开始延迟。 在发动机起动之后，燃料喷射系统的控制器8将每个燃料喷射循环中的转换阀打开开始时间设置为比喷射器打开开始时间更早的时间，或者喷射器和喷射器的打开开始时间 转换阀直到比常规模式更早的时间，直到连接到喷射速率切换转换下游侧的燃料通道10a的部分的低压蓄能器4中的燃料压力 阀5已经达到设定水平，从而可以防止燃料喷射开始延迟。 因此，发动机起动特性得到改善，并且防止了来自发动机的白烟的排放。

公开(公告)号：US6092509A

公开(公告)日：2000-07-25

申请号：US443009

申请日：1999-11-18

申请人： Keiki Tanabe ,  Susumu Kohketsu

发明人： Keiki Tanabe ,  Susumu Kohketsu

IPC分类号： F02D41/38 ,  F02D41/40 ,  F02M47/02 ,  F02M37/04

CPC分类号： F02D41/401 ,  F02D41/3827 ,  F02D41/3836 ,  F02M47/027 ,  F02D2041/3881 ,  F02D2041/389 ,  F02D2200/0602 ,  Y02T10/44

摘要： During a transitional operation of an engine in which an engine load is changed suddenly from a high load to a low load, a control operation for extending an opening period of a change-over valve which is adapted to switch a low-pressure accumulator and a high-pressure accumulator from one to the other during a fuel injection operation is carried out to increase a flow rate of a fuel supplied to the low-pressure accumulator and thereby reduce the pressure in the high-pressure accumulator, whereby a response delay of the fuel pressure in the high-pressure accumulator is minimized. During a transitional operation of the engine in which the engine is in an accelerated operation, the change-over valve is kept open until the fuel pressure in the low-pressure accumulator, which is connected to the portion of a fuel passage which is on the downstream side of the change-over valve adapted to switch the low-pressure accumulator and high-pressure accumulator from one to the other during a fuel injection operation, reaches an indicated level, and until a predetermined period of time elapses after the fuel injection finishing time, whereby the formation of a fuel pressure in the low-pressure accumulator is promoted to obtain injection condition suiting the operating condition of the engine.

摘要翻译： 在发动机的过渡操作中，其中发动机负载从高负载突然改变为低负载时，用于延长转换阀的打开周期的控制操作，所述转换阀适于切换低压蓄能器和 在燃料喷射操作期间，执行从一个到另一个的高压蓄能器以增加供给到低压蓄能器的燃料的流量，从而降低高压蓄能器中的压力，由此， 高压蓄能器中的燃料压力被最小化。 在发动机处于加速运转的发动机的过渡操作期间，转换阀保持打开，直到低压蓄能器中的燃料压力连接到燃料通道的位于 适于在燃料喷射操作期间将低压蓄能器和高压蓄能器从一个切换到另一个的转换阀的下游侧达到指示水平，并且直到在燃料喷射完成之后经过预定时间段 从而促进低压蓄能器中的燃料压力的形成，以获得适合发动机运转状态的喷射条件。

公开(公告)号：US07007671B2

公开(公告)日：2006-03-07

申请号：US11094477

申请日：2005-03-31

申请人： Shinji Nakayama ,  Susumu Kouketsu ,  Keiki Tanabe

发明人： Shinji Nakayama ,  Susumu Kouketsu ,  Keiki Tanabe

IPC分类号： F02M37/04 ,  F02M55/02

CPC分类号： F02M63/0043 ,  F02D41/3872 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M61/205 ,  F02M63/0225

摘要： A booster unit is provided in an injector of a fuel injection system. The booster unit includes a booster piston accommodated in a pressure chamber, and a discharge valve capable of discharging fuel in a backpressure chamber. A controller includes an indication-value setting step which sets an indication value of a target pressure in a common rail in correspondence to an engine operation state, a determination step which determines whether or not the indication value of the pressure in the common rail is in a direction of reduction to be lower in comparison to a previously set indication value, and a booster piston pseudo-operation step which opens the discharge valve at timing other than injection operation of the injector when the determination step has determined that the indication value is in the direction of reduction.

摘要翻译： 在燃料喷射系统的喷射器中设置增压单元。 升压单元包括容纳在压力室中的增压活塞和能够在背压室中排出燃料的排出阀。 指示值设定步骤，根据发动机的运转状态，设定共轨中的目标压力的指示值，判定步骤，判断共轨中的压力的​​指示值是否在 减速方向与先前设定的指示值相比较低;以及增压器活塞伪操作步骤，当所述确定步骤已经确定所述指示值处于所述指示值时，在所述喷射器的喷射操作之外的定时打开所述排出阀 减少的方向。

公开(公告)号：US20050229905A1

公开(公告)日：2005-10-20

申请号：US11094476

申请日：2005-03-31

申请人： Shinji Nakayama ,  Susumu Kouketsu ,  Keiki Tanabe

发明人： Shinji Nakayama ,  Susumu Kouketsu ,  Keiki Tanabe

IPC分类号： F02M47/00 ,  F02M1/00 ,  F02M47/02 ,  F02M55/00 ,  F02M55/02 ,  F02M57/02 ,  F02M63/02

CPC分类号： F02M63/0225 ,  F02M47/027 ,  F02M55/002 ,  F02M57/025

摘要： A booster unit is provided in an injector of a fuel injection system. The booster unit includes a booster piston accommodated in a pressure chamber, and a discharge valve capable of discharging fuel in a backpressure chamber. A needle valve drive unit includes a pressure-receiving piston and an open/close valve. A return passage is connected to a discharge side of the open/close valve. A fuel discharge passage in communication with the discharge valve is combined with the return passage in a confluence portion. A check valve is provided between the confluence portion and the open/close valve. A check valve permits the fuel discharged to the return passage from a pressurization chamber to be directed to the confluence portion, and prevents the fuel discharged to the fuel discharge passage from the backpressure chamber from being directed the open/close valve.

摘要翻译： 在燃料喷射系统的喷射器中设置增压单元。 升压单元包括容纳在压力室中的增压活塞和能够在背压室中排出燃料的排出阀。 针阀驱动单元包括受压活塞和打开/关闭阀。 返回通道连接到打开/关闭阀的排出侧。 与排出阀连通的燃料排出通道与汇合部分中的返回通道组合。 在汇合部分和打开/关闭阀之间设有止回阀。 止回阀允许从加压室排出到返回通道的燃料被引导到汇合部分，并且防止从背压室排出到燃料排出通道的燃料被引导到打开/关闭阀。

公开(公告)号：US20100313854A1

公开(公告)日：2010-12-16

申请号：US12521571

申请日：2007-12-10

申请人： Keiki Tanabe ,  Shinji Nakayama ,  Fumitaka Komatsu ,  Masaki Sugiura

发明人： Keiki Tanabe ,  Shinji Nakayama ,  Fumitaka Komatsu ,  Masaki Sugiura

IPC分类号： F02M51/00

CPC分类号： F02D41/3845 ,  F02D41/40 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M63/0007 ,  F02M63/0225 ,  Y02T10/44

摘要： In a common rail internal combustion engine having a pressure increase mechanism, when the pressure increase mechanism is activated, fuel is injected according to a target injection quantity determined by adding an increase in injection quantity calculated depending on a load on a supply pump to a demanded injection quantity.

摘要翻译： 在具有增压机构的共轨内燃机中，当增压机构启动时，根据通过将根据供给泵上的负荷而计算的喷射量的增加量加到所要求的喷射量而确定的目标喷射量来喷射燃料 注射量。

公开(公告)号：US07395658B2

公开(公告)日：2008-07-08

申请号：US11234432

申请日：2005-09-23

申请人： Daisuke Sunohara ,  Susumu Kouketsu ,  Shinji Nakayama ,  Keiki Tanabe

发明人： Daisuke Sunohara ,  Susumu Kouketsu ,  Shinji Nakayama ,  Keiki Tanabe

IPC分类号： F01N3/00

CPC分类号： F02D41/1441 ,  F01N3/0842 ,  F01N3/0871 ,  F01N11/00 ,  F01N2550/03 ,  F02D41/1446 ,  F02D41/187 ,  F02D2200/0806 ,  F02D2200/0808 ,  Y02T10/24 ,  Y02T10/47

摘要： There is provided an apparatus that estimates the NOx adsorption amount, comprising a NOx trap catalyst that is disposed in an exhaust passage of an engine, for adsorbing NOx in exhaust gases during lean operation and releasing and reducing the adsorbed NOx during rich operation, an operation unit that computes an amount of emission from the catalyst during rich operation by using a map or a polynomial equation that reflects emissions from the catalyst based on the exhaust gas temperature and the exhaust gas flow rate of the exhaust passage and the excess-air factor upstream of the catalyst, and an estimating unit that estimates an amount of adsorption in the NOx trap catalyst from the computed emission amount.

摘要翻译： 提供了一种估计NOx吸附量的装置，其包括设置在发动机的排气通道中的NOx捕集催化剂，用于在稀薄操作期间吸附废气中的NOx，并且在富运行期间释放和减少吸附的NOx，操作 单元，其通过使用基于排气通道的排气温度和排气流量和过量空气系数上游的催化剂的排放的映射或多项式方程式计算在富运行期间来自催化剂的排放量 的催化剂，以及估计单元，其从所计算的排放量估计NOx捕集催化剂中的吸附量。

公开(公告)号：US20050268888A1

公开(公告)日：2005-12-08

申请号：US11094477

申请日：2005-03-31

申请人： Shinji Nakayama ,  Susumu Kouketsu ,  Keiki Tanabe

发明人： Shinji Nakayama ,  Susumu Kouketsu ,  Keiki Tanabe

IPC分类号： F02M47/00 ,  F02D41/04 ,  F02D41/38 ,  F02M1/00 ,  F02M47/02 ,  F02M51/00 ,  F02M57/02 ,  F02M59/10 ,  F02M59/46 ,  F02M61/20 ,  F02M63/00 ,  F02M63/02

CPC分类号： F02M63/0043 ,  F02D41/3872 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M61/205 ,  F02M63/0225

摘要： A booster unit is provided in an injector of a fuel injection system. The booster unit includes a booster piston accommodated in a pressure chamber, and a discharge valve capable of discharging fuel in a backpressure chamber. A controller includes an indication-value setting step which sets an indication value of a target pressure in a common rail in correspondence to an engine operation state, a determination step which determines whether or not the indication value of the pressure in the common rail is in a direction of reduction to be lower in comparison to a previously set indication value, and a booster piston pseudo-operation step which opens the discharge valve at timing other than injection operation of the injector when the determination step has determined that the indication value is in the direction of reduction.

摘要翻译： 在燃料喷射系统的喷射器中设置增压单元。 升压单元包括容纳在压力室中的增压活塞和能够在背压室中排出燃料的排出阀。 指示值设定步骤，根据发动机的运转状态，设定共轨中的目标压力的指示值，判定步骤，判断共轨中的压力的​​指示值是否在 减速方向与先前设定的指示值相比较低;以及增压器活塞伪操作步骤，当所述确定步骤已经确定所述指示值处于所述指示值时，在所述喷射器的喷射操作之外的定时打开所述排出阀 减少的方向。