-
公开(公告)号：US4448168A
公开(公告)日：1984-05-15
申请号：US399514
申请日：1982-07-19
申请人： Hideaki Komada , Yutaka Kojima , Tomonori Ohie
发明人： Hideaki Komada , Yutaka Kojima , Tomonori Ohie
CPC分类号： F02M47/043 , F02M59/105 , F02B3/06
摘要： A fuel injector of a Diesel engine is supplied with a boosted supply of fuel from a booster and operated to start and terminate a fuel injection by a hydraulically controlled nozzle needle actuator. A valving unit is controlled to selectively communicate compressed operating fluid to the booster so that the boosted supply of fuel reaches the fuel injector. The valving unit comprises a pair of poppet type valves each of which is operated by a solenoid operated pilot valve, thereby attaining high speed operation due to a high frequency of switching actions and accommodating a large flow rate of fluid. A manually or automatically adjustable stop is associated with each of the poppet type valves to control the flow rate of fluid through the valve to the booster, which dictates the pressure of fuel injection from the injector.
摘要翻译： 柴油发动机的燃料喷射器被供给来自增压器的增压燃料供给，并通过液压控制的喷嘴针致动器启动和终止燃油喷射。 控制阀单元以选择性地将压缩的工作流体传递到增压器，使得增压的燃料供应到达燃料喷射器。 阀单元包括一对提升阀，每个由电磁操作先导阀操作，从而由于高频率的切换动作并且容纳大流量的流体而实现高速操作。 手动或可自动调节的止动件与每个提升阀类型相关联，以控制通过阀到增压器的流体的流量，这决定了从喷射器喷射的燃料的压力。
-
公开(公告)号：US4359032A
公开(公告)日：1982-11-16
申请号：US260689
申请日：1981-05-05
申请人： Tomonori Ohie
发明人： Tomonori Ohie
CPC分类号： F02M55/002 , F02D41/345 , F02D41/401 , F02M59/34 , F02M61/205 , F02M63/0007 , F02M65/005 , F02B3/06 , F02D2200/063 , Y02T10/44
摘要： An electronic fuel injection control system adapted for combination with a fuel injection valve, which comprises means for regulating the valve opening pressure of the injection nozzle of the fuel injection valve, means for regulating the injection timing of the injection nozzle, means for detecting the operating condition of an engine associated with the fuel injection valve, and means responsive to the output of the detecting means for electronically controlling the valve opening pressure regulating means and the injection timing regulating means. The electronic control means is adapted to control the valve opening pressure regulating means and the injection timing regulating means so as to obtain an injection rate, an injection timing and an injection period appropriate for the operating condition of the engine. The electronic fuel injection control system according to the invention may further include means for regulating the injection pressure of the injection nozzle, which is arranged to be controlled by the electronic control means so as to obtain an injection rate appropriate for the operating condition of the engine in cooperation with the valve opening pressure regulating means.
摘要翻译： 一种适于与燃料喷射阀组合的电子燃料喷射控制系统，其包括用于调节燃料喷射阀的喷射喷嘴的开阀压力的装置，用于调节喷射喷嘴的喷射正时的装置，用于检测喷射阀的操作的装置 与燃料喷射阀相关联的发动机的状态，以及响应于用于电子地控制阀打开压力调节装置和喷射正时调节装置的检测装置的输出的装置。 电子控制装置适于控制开阀压力调节装置和喷射正时调节装置，以获得适合于发动机运行状态的喷射速率，喷射正时和喷射周期。 根据本发明的电子燃料喷射控制系统还可以包括用于调节喷射喷嘴的喷射压力的装置，其被布置成由电子控制装置控制，以获得适合于发动机的运行状态的喷射速率 与开阀压力调节装置配合。
-
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.
-
4.发明授权
公开(公告)号：US4438496A
公开(公告)日：1984-03-20
申请号：US269878
申请日：1981-06-03
申请人： Tomonori Ohie
发明人： Tomonori Ohie
IPC分类号： F02D41/34 , F02D41/14 , F02D41/26 , F02D41/32 , F02D41/40 , F02D45/00 , F02M51/06 , F02D5/02
CPC分类号： F02D41/32 , F02D41/14 , F02D41/26 , F02D2200/0602 , F02D2200/063
摘要： A feedback control method for electronically controlling the fuel injection for an internal combustion engine, which is characterized by detecting the actual nozzle needle lift and actual injection pressure of a fuel injection valve to arithmetically calculate an actual fuel injection quantity from the detected values of nozzle needle lift and injection pressure by means of electronic computer means, detecting the values of factors indicative of the operating condition of the engine such as engine speed and engine load to arithmetically calculate a required fuel injection quantity from the detected values of the above factors by means of the electronic computer means, and correcting the calculated required injection quantity with reference to the calculated actual injection quantity.
摘要翻译： 一种用于电子控制用于内燃机的燃料喷射的反馈控制方法，其特征在于检测燃料喷射阀的实际喷嘴针升程和实际喷射压力，以从喷嘴针的检测值算术计算实际燃料喷射量 通过电子计算机装置提升和注射压力，检测指示发动机的运行状况的因素的值，例如发动机转速和发动机负荷，以从上述因素的检测值中算出所需燃料喷射量，借助于 电子计算机装置，并且根据计算的实际喷射量来校正所计算的所需喷射量。
-
公开(公告)号：US4403585A
公开(公告)日：1983-09-13
申请号：US329085
申请日：1981-12-09
申请人： Tomonori Ohie
发明人： Tomonori Ohie
CPC分类号： F02D41/40 , F02M61/205 , Y02T10/44
摘要： In a fuel injection nozzle system having an injection-valve which is able to adjust the opening pressure to any value, there is provided with a device for adjusting the opening pressure of the injection-valve, a setting circuit for setting a target value for the injection-valve opening pressure in response to at least one signal indicative of the condition of engine operation, and a detecting circuit for detecting the actual value of the injection-valve opening pressure set by the device. The output signals from the detecting circuit and the setting circuit are applied to a circuit for computing the difference between the actual value and the target value and the device is operated in accordance with the signal indicative of the difference so that the actual value of the injection opening pressure is set at the target value of the injection-valve opening pressure with high accuracy.
摘要翻译： 在具有能够将打开压力调节到任何值的喷射阀的燃料喷射喷嘴系统中，设置有用于调节喷射阀的打开压力的装置，用于设定喷射阀的目标值的设定电路 响应于表示发动机运转状态的至少一个信号的喷射阀打开压力，以及用于检测由该装置设定的喷射阀打开压力的实际值的检测电路。 来自检测电路和设定电路的输出信号被施加到用于计算实际值和目标值之间的差值的电路，并且根据指示差值的信号来操作装置，使得注入的实际值 打开压力被设定在喷射阀打开压力的目标值上，精度高。
-
-
-
-
搜索结果
5 条记录 (耗时 0.023 秒)
