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公开(公告)号：US09074567B2
公开(公告)日：2015-07-07
申请号：US13702096
申请日：2010-10-27
申请人： Deuk-Jin Park , Ju-Tae Kim , Eung-Sung Kim , Kang-Yun Jung , Kwang-Cheol Heo , Jong-Suk Kim , Eun Ha , Beom-Yong No
发明人： Deuk-Jin Park , Ju-Tae Kim , Eung-Sung Kim , Kang-Yun Jung , Kwang-Cheol Heo , Jong-Suk Kim , Eun Ha , Beom-Yong No
摘要： A fuel injection pump having a separable plunger includes a separable plunger of which outer circumference is slide coupled to an inside of the a such that a lower portion thereof is supported by an upper portion of a main plunger to enable upward and downward slide movement in association with the main plunger, wherein an injection timing control spiral step of which upper surface is formed in a spiral shape, is protrudingly formed on the outer circumference thereof and a fuel passage is formed on one side of the outer circumference thereof including the injection timing control spiral step and an elastic member having a lower portion elastically supported by the separable plunger and an upper portion inserted within the barrel to be supported by an upper surface of the barrel.
摘要翻译： 具有可分离柱塞的燃料喷射泵包括可分离柱塞，其外周滑动地联接到a的内侧，使得其下部由主柱塞的上部支撑，以使得能够相关联地向上和向下滑动运动 与主柱塞一起，其上表面形成为螺旋状的喷射正时控制螺旋步骤突出地形成在其外周上，并且在其外周的一侧上形成燃料通道，包括喷射正时控制 螺旋台阶和弹性构件，其具有由所述可分离柱塞弹性支撑的下部，以及插入所述筒内的上部，以由所述筒的上表面支撑。
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公开(公告)号：US20140338637A1
公开(公告)日：2014-11-20
申请号：US13894792
申请日：2013-05-15
申请人： Caterpillar Inc.
发明人： Scott Shafer , Steven Tian
CPC分类号： F02M37/043 , F02D1/10 , F02M59/08 , F02M59/26 , F02M59/48 , F02M63/027 , Y10T29/49233
摘要： A fuel system for an engine is disclosed. The engine may have a crankshaft and a plurality of cylinders. The fuel system may have a plurality of plungers separately connectable to the crankshaft and a plurality of fuel injectors associated with the plurality of cylinders. The fuel system may also have a common rail configured to store pressurized fuel. The fuel system may additionally have a plurality of first conduits, each first conduit fluidly connecting a barrel associated with a respective one of the plurality of plungers to the common rail. The fuel system may also have a plurality of second conduits, each second conduit fluidly connecting the common rail to a respective one of the plurality of fuel injectors.
摘要翻译： 公开了一种用于发动机的燃料系统。 发动机可以具有曲轴和多个气缸。 燃料系统可以具有可分离地连接到曲轴的多个柱塞和与多个气缸相关联的多个燃料喷射器。 燃料系统还可以具有构造成存储加压燃料的共轨。 燃料系统可以另外具有多个第一导管，每个第一导管将与多个柱塞中的相应一个柱塞相关联的筒流体地连接到共轨。 燃料系统还可以具有多个第二管道，每个第二管道将共轨道流体地连接到多个燃料喷射器中的相应一个。
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公开(公告)号：US5259350A
公开(公告)日：1993-11-09
申请号：US760017
申请日：1991-09-13
摘要： The fuel injection device includes a plunger, operatively connected, to a cam driven by an engine, having control groups for use in communicating with an outer circumferential surface and an end surface of a fuel injection nozzle. The fuel injection device further includes a timing sleeve fitted outwardly of the plunger, for opening or closing the control groups and an actuator for driving a timing rod connected to the timing sleeve in such a way as to move the timing sleeve up and down against the plunger. Finally, the fuel injection device includes a control device for outputting a signal for performing moving-up or moving-down of the timing sleeve to the actuator, and inputting a signal from a source of operation information.
摘要翻译： 燃料喷射装置包括可操作地连接到由发动机驱动的凸轮的柱塞，具有用于与燃料喷射喷嘴的外周表面和端表面连通的控制组。 燃料喷射装置还包括：安装在柱塞外侧的定时套筒，用于打开或关闭控制组;以及致动器，用于驱动连接到定时套筒的定时杆，以使定时套筒向上和向下移动抵抗 柱塞。 最后，燃料喷射装置包括用于输出用于执行定时套筒向致动器的上移或下降的信号以及从操作信息源输入信号的控制装置。
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公开(公告)号：US5102309A
公开(公告)日：1992-04-07
申请号：US642425
申请日：1991-01-17
申请人： Gunther Spehr
发明人： Gunther Spehr
CPC分类号： F02M59/44 , F02M59/26 , F02M59/445
摘要： A high-pressure pump with a plunger reciprocating in a cylinder has a cylindrical guide surface on the plunger chamber side of the inlet/outlet port and a cylindrical guide surface on the drive side of an axial chord of 0.05 to 0.5 times the plunger diameter. This provides an advantage in that under high pump pressure the plunger emerges from the guide surface so that the plunger surface areas exposed to unilateral side forces are reduced. This prevents the plunger from canting and possibly seizing on the cylinder wall.
摘要翻译： 具有在气缸中往复运动的柱塞的高压泵具有在入口/出口的柱塞室侧的圆柱形引导表面和在柱塞直径的0.05至0.5倍的轴向弦的驱动侧上的圆柱形引导表面。 这提供了一个优点，即在高泵压的情况下，柱塞从引导表面出来，使得暴露于单侧侧力的柱塞表面区域减小。 这样可以防止柱塞在气缸壁上滑动并可能卡住。
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公开(公告)号：US4439116A
公开(公告)日：1984-03-27
申请号：US350463
申请日：1982-02-19
申请人： Tomonori Ohie
发明人： Tomonori Ohie
摘要： In a fuel injection pump having a dual plunger composed of a first plunger for adjusting the timing of the beginning of fuel injection and a second plunger for adjusting the timing of the end of fuel injection, the first and second plungers are operatively connected with a governor in such a way that only the first adjusting member is operated in accordance with the governor and the second plunger is displaced in accordance with the displacement of the first plunger, whereby the second plunger is displaced by the distance necessary for compensating for the change in the amount of fuel injection caused by the displacement.FUEL INJECTION PUMP The present invention relates to a fuel injection pump for an internal combustion engine in which the timing of the beginning of fuel injection can be set independently of the setting of the timing of the end of fuel injection.Recent circumstances such as the increase in the cost of fuel has led to the frequent use of lower quality fuels in marine engines. Moreover, fuel quality varies considerably with port of call. Therefore, to obtain good combustion of such low quality fuels in the cylinder of the engine, it is desirable to change the timing of the beginning of fuel injection each time there is a change in the quality of the fuel. That is, it is desirable always to operate the injection pump at the timing of the beginning of the fuel injection which is optimum for the quality of the supplied fuel.In order to satisfy this desire, there has been widely used a separate type fuel injection pump which has a plunger for adjusting the timing of the beginning of fuel injection independently of a plunger for adjusting the amount of fuel injected and each plunger is operated by its own adjusting rack. However, in this conventional fuel injection pump, when the adjusting rack for adjusting the timing of the beginning of fuel injection is positioned so as to increase the injection advance, if the adjusted condition of the unger for adjusting the amount of fuel injected is not changed, it follows that the amount of fuel injected is increased substantially. As a result, to maintain the engine speed at a desired speed, the adjusting rack for adjusting the amount of fuel injected is displaced by a governor so as to decrease the amount of fuel injected. However, in a marine engine system, the load on the engine is judged from the position of the adjusting rack for adjusting the amount of fuel injected. Therefore, if the position of the adjusting rack for adjusting the amount of fuel injected is displaced in response to the positional adjustment of the rack for adjusting the timing of the beginning of fuel injection, the operator will no longer be able to judge the load on the engine accurately.It is therefore an object of the present invention to provide an improved separate type injection pump for an internal combustion engine system.It is another object of the present invention to provide an inproved separate type injection pump suitable for use in a marine diesel engine system.It is a further object of the present invention to provide a separate type fuel injection pump wherein the correcting operation for the change in the amount of fuel injected caused by the adjustment of the injection advance can be carried out automatically.It is a still further object of the present invention to provide a separate type fuel injection pump in which the change in the amount of fuel injected caused by the adjustment of the injection advance can be automatically corrected without causing displacement of the control rack of the governor.According to the present invention, in a fuel injection pump having a first plunger with a first helix lead which serves to set the timing of the end of fuel injection, a second plunger with a second helix lead which serves to set the timing of the beginning of fuel injection, and a barrel which has ports corresponding to said first and second helix leads and receives the first and second plungers, a first pinion member is engaged with the first plunger so as to allow the first plunger to reciprocate in its axial direction but to move together with the first pinion member in its circumferential direction and a second pinion member is engaged with the second plunger so as to allow the second plunger to reciprocate in its axial direction but to move together with the second pinion member in its circumferential direction. The first pinion member is engaged with a first rack for adjusting the rotational position of the first plunger to set the timing of the end of fuel injection at any desired timing, and the second pinion member is engaged with a second rack for adjusting the rotational position of the second plunger to set the timing of the beginning of fuel injection at any desired timing. The fuel injection pump is provided with a governor having an operating rod for positioning the position of the first rack, and the operating rod and the first and second racks are operatively connected through a lever mechanism or a link mechanism. The lever mechanism functions such that only the first rack is displaced placed in accordance with the movement of the operating rod and only the first rack is displaced at a predetermined ratio of displacement in response to the displacement of the second rack. That is, in response to the displacement of the operating rod, the first rack is positioned without causing the second rack to move and in response to the displacement of the second rack, the first rack is displaced without causing the operating rod to move. As a result, the change in the amount of fuel injected caused by the displacement of the second rack can be compensated for without changing the position of the operating rod, so that the position of the operating rod always shows the exact amount of fuel injection. The above-mentioned compensating operation can be easily realized by selecting the ratio of displacement between the first and the second racks when the position of the second rack is adjusted, in relation to the configurations of the first and the second helix leads.As described above, even when the timing of the beginning of the fuel injection is changed by the displacement of the second rack, the amount of fuel injected after the timing of the beginning of fuel injection has been changed can be maintained at the same amount as before the change, so long as the operating rod of the governor is maintained in the same position. As a result, the magnitude of the load on the engine can be known from the position of the operating rod irrespective of the position of the first rack.
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公开(公告)号：US3740172A
公开(公告)日：1973-06-19
申请号：US3740172D
申请日：1971-06-01
申请人： BORG WARNER
发明人： ULBING O
CPC分类号： F04B9/045 , F01M3/00 , F02B1/04 , F02B2075/025 , F02M59/26 , F02M2700/1388
摘要： Improved system for supplying fuel and oil to two-cycle internal combustion engines including a simple and reliable fuel-oil injector pump which mixes the fluids in a desired ratio from separate tanks. Means for automatically shutting off fuel flow upon loss of oil are provided. Crankcase scavenging pressure assists oil pumping. The injector pump continuously circulates fuel through the fuel tank to avoid vapor lock. Several arrangements for properly correlating the injector pumping rate with engine air flow are disclosed. An improved injection nozzle utilizing an elastomeric band is disclosed. A system for supplying dual cylinders from the same injector pump is disclosed.
摘要翻译： 改进的用于向双循环内燃机供应燃料和油的系统，包括简单可靠的燃料 - 油喷射泵，其以相应的比例将液体与分离的罐混合。 提供了在油损失时自动关闭燃料流动的装置。 曲轴箱清扫压力有助于抽油。 喷油器泵将燃油连续循环通过燃油箱，以避免汽油锁。 公开了将喷射器泵送速率与发动机空气流正确相关联的几种布置。 公开了一种利用弹性带的改进的喷嘴。 公开了一种从同一喷射泵供应双气缸的系统。
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公开(公告)号：US3739809A
公开(公告)日：1973-06-19
申请号：US3739809D
申请日：1971-06-21
申请人： ULBING O
发明人： ULBING O
IPC分类号： F01M3/00 , F02B1/04 , F02B75/02 , F02M41/08 , F02M59/26 , F04C2/46 , F04C14/08 , F04C14/14 , F04B49/00 , F04B39/00
CPC分类号： F04C14/14 , F01M3/00 , F02B1/04 , F02B2075/025 , F02M41/08 , F02M59/26 , F02M2700/1329 , F02M2700/1388 , F04C2/46 , F04C14/08 , Y10T137/86123
摘要： The fuel-per-stroke which fuel injection systems deliver to an engine is varied in accordance with engine speed to provide a desired fuel-air mixture ratio by means of a spring-loaded check valve responsive to momentary pressure impulses occurring in a pump chamber and operative to divert increasing fuel at increasing engine speeds. The check valve spring loading is varied simultaneously with the pump delivery setting in some embodiments, and valve operation is varied in accordance with engine speed and/or acceleration in some embodiments. The system is illustrated in connection with several reciprocating fuelinjection pumps and several rotary fuel-injection pumps.
摘要翻译： 燃料喷射系统输送到发动机的每冲程燃料根据发动机转速变化，以通过响应于在泵室中发生的瞬时压力脉冲的弹簧加载止回阀来提供期望的燃料 - 空气混合比， 在增加发动机转速的情况下可以转向增加燃油。 在一些实施例中，止回阀弹簧加载与泵输送设置同时变化，并且在一些实施例中，阀操作根据发动机速度和/或加速度而变化。 该系统与多个往复式燃料喷射泵和几个旋转燃料喷射泵结合说明。
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公开(公告)号：US2657631A
公开(公告)日：1953-11-03
申请号：US23863151
申请日：1951-07-26
申请人： CAV LTD
发明人： MACKIE EVANS FRASER
CPC分类号： F02D1/12 , F02M59/26 , F02M2700/1388
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公开(公告)号：US2571501A
公开(公告)日：1951-10-16
申请号：US61093745
申请日：1945-08-17
申请人： GEN MOTORS CORP
发明人： TRUXELL JR CLYDE W
CPC分类号： F02M57/02 , F02M59/26 , F02M61/165 , F02M2700/1388
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