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    • 1. 发明授权
    • Fuel injection pump having a compact spill-port timing control unit
    • 燃油喷射泵具有紧凑的溢油口定时控制单元
    • US4573442A
    • 1986-03-04
    • US501789
    • 1983-06-07
    • Toshimi MatsumuraMasahiko MiyakiAkira Masuda
    • Toshimi MatsumuraMasahiko MiyakiAkira Masuda
    • F02M41/12F02M41/14F02M59/20
    • F02M41/126F02M41/1411
    • In a fuel injection pump, an engine drives a rotary plunger having an axially extending bore connected to a compression chamber, plural fuel inlet ports alignable with an inlet passage for introducing fuel to the compression chamber, fuel distribution ports for distributing the compressed fuel through the bore to each one of the fuel delivery passages and plural spill ports. A spill-port timing control unit is provided comprising a stator core, a coil wound on thereon, a magnetized ring having a spill groove, and a spring for resiliently maintaining the ring in a reference angular position with respect to the stator core. The magnetized ring is mounted on the plunger so that it can rotate from the reference angular position to an angularly displaced position in proportion to the magnetic flux of the coil to align the spill groove of the ring with each spill port of the plunger to create a passageway through which the compressed fuel is allowed to escape at the termination of fuel injection.
    • 在燃料喷射泵中,发动机驱动具有连接到压缩室的轴向延伸的孔的旋转柱塞,与用于将燃料引入压缩室的入口通道对准的多个燃料入口,用于将压缩燃料分配通过 通向每个燃料输送通道和多个溢出口。 提供了一种溢流口定时控制单元,其包括定子芯,缠绕在其上的线圈,具有溢流槽的磁化环,以及用于将环弹性保持在相对于定子芯的参考角度位置的弹簧。 磁化环安装在柱塞上,使得其可以从参考角位置旋转到与线圈的磁通量成比例的角位移位置,以将环的溢流槽与柱塞的每个溢出端口对准以产生 在燃料喷射终止时允许压缩燃料通过其排出的通道。
    • 2. 发明授权
    • Fuel injection pump for internal combustion engine
    • 内燃机燃油喷射泵
    • US4492534A
    • 1985-01-08
    • US538994
    • 1983-10-04
    • Masahiko MiyakiAkira MasudaToshimi Matsumura
    • Masahiko MiyakiAkira MasudaToshimi Matsumura
    • F02D41/40F02M41/14F04B35/02F02M39/00F04B19/02
    • F02M41/1422
    • Fuel injection pump of the type arranged to inject fuel into engine cylinders with the fuel flow being controlled by an electromagnetic valve, comprises a rotor arranged to rotate in timed relation to engine rotation, and a shuttle movably received in an axial bore made in the rotor. Opposite sides of the shuttle define first and second chambers within the axial bore, where the first chamber is used as a compression chamber to pressurize fuel introduced therein via the electromagnetic valve to inject the same into engine cylinders, and the second chamber is communicable with a low pressure fuel reservoir. Fuel is fed into the first and second chambers during an intake stroke or mode, and then the second chamber fuel is pressurized by means of an inner cam mechanism so that the shuttle moves toward the first chamber to pressurize the fuel therein, thereby injecting the fuel during a compression stroke. When the shuttle has been moved toward the first chamber beyond a predetermined position, the second chamber communicates with the low pressure fuel reservoir via a by-pass, lowering fuel pressure in the second chamber to terminate injection. The amount of fuel injected into cylinders is controlled by the stroke of the shuttle toward the first chamber, which stroke is initially determined by the energizing interval of the electromagnetic valve.
    • 燃料喷射泵,其被配置为将燃料喷射到发动机气缸中,其燃料流由电磁阀控制,包括转子,其布置成与发动机旋转成定时关系旋转;以及可移动地容纳在转子中形成的轴向孔中的梭 。 梭子的相对侧限定轴向孔内的第一和第二腔室,其中第一腔室用作压缩室,以对通过电磁阀引入的燃料进行加压,以将其喷射到发动机气缸中,并且第二腔室可与一个 低压油箱。 在进气冲程或模式期间,燃料被供给到第一和第二腔室中,然后借助于内部凸轮机构对第二腔室燃料进行加压,使得梭子向第一腔室移动以对其中的燃料加压,由此喷射燃料 在压缩冲程期间。 当梭子已经朝向第一腔室移动超过预定位置时,第二腔室经由旁路与低压燃料储存器连通,降低了第二腔室中的燃料压力以终止喷射。 喷射到气缸中的燃料量由梭子朝向第一室的行程控制,该行程最初由电磁阀的通电间隔决定。
    • 3. 发明授权
    • Distributor type fuel-injection pump for distributing fuel to cylinders
of an internal combustion engine
    • 用于将燃料分配到内燃机的气缸的分配器型燃料喷射泵
    • US4499883A
    • 1985-02-19
    • US564408
    • 1983-12-22
    • Masahiko MiyakiAkira MasudaToshimi Matsumura
    • Masahiko MiyakiAkira MasudaToshimi Matsumura
    • F02M41/14F04B19/00
    • F02M41/1411
    • A distributor type fuel-injection pump according to the present invention is provided with a rotor which is rotated by an engine. The rotor has a pair of plungers slidable in the radial direction of the rotor, and a fuel pumping chamber is defined between the plungers. The rotor is surrounded by a cam ring which reciprocates the plungers as the rotor rotates, thereby sucking fuel into the fuel pumping chamber and pressurizing the fuel therein. The fuel pressurized in the fuel pumping chamber is distributed to individual cylinders of the engine. A plurality of spill holes are formed in the rotor, communicating with the fuel pumping chamber and opening to the outer peripheral surface of the rotor. A control sleeve to open and close the spill holes is axially slidably fitted on the rotor. First and second spill grooves capable of communicating with the spill holes are formed on the inner peripheral surface of the control sleeve. The first and second spill grooves open or close the spill holes to define the timing for the start of fuel delivery in the fuel pumping chamber and the timing for the end of fuel delivery, thereby determining the amount of fuel delivery.
    • 根据本发明的分配器式燃料喷射泵设置有由发动机旋转的转子。 转子具有可沿转子的径向滑动的一对柱塞,并且在柱塞之间限定燃料泵送室。 转子由转子围绕,当转子旋转时往复运动的凸轮环,从而将燃料吸入燃料泵送室并对其中的燃料加压。 在燃料泵送室中加压的燃料被分配到发动机的各个气缸。 在转子中形成有多个泄漏孔,与燃料泵送室连通并且向转子的外周面开口。 用于打开和关闭泄漏孔的控制套筒可轴向滑动地安装在转子上。 能够与溢出孔连通的第一和第二溢出槽形成在控制套筒的内周面上。 第一和第二泄漏槽打开或关闭泄漏孔,以限定燃料泵送室中的燃料开始开始的时间和燃料输送结束的时间,从而确定燃料输送量。
    • 6. 发明授权
    • Fuel injection amount control
    • 燃油喷射量控制
    • US4475507A
    • 1984-10-09
    • US514608
    • 1983-07-18
    • Masahiko MiyakiAkira MasudaToshimi Matsumura
    • Masahiko MiyakiAkira MasudaToshimi Matsumura
    • F02D41/40F02M41/12F02D1/04
    • F02D41/408F02M41/125F02D2200/703Y02T10/44
    • In a fuel injection system having a fuel injection pump of distribution type with an electromagnetic valve controlling the communication between a spill port and a lower pressure fuel chamber, the closing duration of the electromagnetic valve is controlled by a computer so that the closing duration is defined as the sum of prestroke time and actual injection time which are both prestored in one or more memories. The actual injection time is controlled in accordance with engine operating condition, while the prestroke time may also be controlled by manually setting the same or by way of a feedback control. The sum, which defines the closing duration of the electromagnetic valve, may be limited by a maximum value, which may be manually adjustable, so as to prevent excessive fuel flow. The prestroke time may be uniformly controlled through all the cylinders or may be independently controlled for respective cylinders.
    • 在具有分配型燃料喷射泵的燃料喷射系统中,电磁阀控制溢流口和低压燃料室之间的连通,电磁阀的关闭持续时间由计算机控制,使得关闭持续时间被定义 作为预先存储在一个或多个存储器中的预冲击时间和实际喷射时间的总和。 实际喷射时间是根据发动机运转状况进行控制的,而前冲程时间也可以通过手动设定相同的方式或通过反馈控制进行控制。 限定电磁阀关闭持续时间的总和可以限制在可以手动调节的最大值,以便防止燃料流过量。 预冲击时间可以通过所有气缸均匀地控制,或者可以独立地控制各个气缸。
    • 10. 发明授权
    • Fuel injection system
    • 燃油喷射系统
    • US06715468B2
    • 2004-04-06
    • US10286757
    • 2002-11-04
    • Ken UchiyamaToshimi Matsumura
    • Ken UchiyamaToshimi Matsumura
    • F02M5500
    • F02M63/0225F02D41/221F02D41/3845F02D2041/224F02D2041/225F02D2041/227F02D2200/0602F02D2200/0606
    • An excessive volume of fuel discharged by a high-pressure supply pump to a common rail due to an opened state abnormality of an inlet metering valve of the pump may result in an abnormal increase in common rail pressure. In the event of such an abnormal increase, a target idle revolution speed is newly set at an abnormal value greater than a normal value as a measure taken to increase an idle revolution speed. Thus, a pressure limiter, which has been once put in an opened valve state by an actual common rail pressure higher than a limit setting pressure, can be prevented from again entering a closed valve state. As a result, it is possible to eliminate idle performance instability caused by repetition of opened valve and closed valve states of the pressure limiter and, hence, assure reliability of the pressure limiter.
    • 由于泵的入口计量阀的打开状态异常,由高压供给泵排放到共轨上的过量的燃料可能导致共轨压力的异常增加。 在这种异常增加的情况下,将目标怠速转速新设定为大于正常值的异常值作为增加怠速转速所采取的措施。 因此,可以防止已经通过高于极限设定压力的实际共轨压力一度处于打开的阀状态的压力限制器再次进入关闭阀状态。 结果,可以消除由打开的阀的重复和压力限制器的闭合阀状态引起的空闲性能不稳定性,并因此确保压力限制器的可靠性。