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1. 发明授权

US5592915A Pilot injection controller in fuel injection system and method of controlling pilot injection quantity 失效
标题翻译：燃油喷射系统中的先导喷射控制器和控制喷油量的方法
公开(公告)号：US5592915A
公开(公告)日：1997-01-14
申请号：US536988
申请日：1995-09-29
申请人： Hiroshi Ishiwata , Takashi Ohishi , Nobuhiro Kitahara
发明人： Hiroshi Ishiwata , Takashi Ohishi , Nobuhiro Kitahara
IPC分类号： F02B3/06 , F02D1/08 , F02D1/10 , F02D41/40 , F02M45/06 , F02M59/10 , F02M59/24 , F02M59/26 , F02M37/04
CPC分类号： F02D1/10 , F02D1/08 , F02D41/403 , F02D41/407 , F02M45/06 , F02M45/066 , F02M59/102 , F02M59/24 , F02M59/246 , F02B3/06 , F02D41/402 , Y02T10/44
摘要： A pilot injection controller and a method of controlling pilot injection quantity enable the quantity of fuel pilot-injected fuel by an internal combustion engine fuel injection system of the type in which the fuel delivery stroke for pilot injection is fixed to be maintained substantially constant irrespective of engine speed by controlling prestroke such that the utilized portion of a cam is shifted to a lower delivery velocity region thereof with increasing engine speed, the principle involved being that the quantity of fuel pilot-injected by a fuel injection system is proportional to the actual plunger delivery velocity and the fact that since the actual delivery velocity is proportional to the product of the cam velocity constant and the cam rotational speed the actual delivery velocity can be maintained substantially constant by increasing the cam velocity constant in the low speed region and decreasing the cam velocity constant in the high speed region.
摘要翻译：先导喷射控制器和控制喷油量的方法能够通过固定导向喷射的燃料输送冲程的内燃机燃料喷射系统的燃料先导喷射燃料的量保持基本上恒定，而不管通过控制前冲程使发动机转速，使得凸轮的使用部分随着发动机转速的增加而转移到较低的输送速度区域，其原理在于燃料喷射系统先导喷射的燃料量与实际柱塞成比例输送速度以及由于实际输送速度与凸轮速度常数和凸轮转速的乘积成比例的事实，通过增加低速区域中的凸轮速度常数并减小凸轮，实际输送速度可以保持基本恒定速度常数在高速区域。

2. 发明授权

US5482016A Pilot injection control system 失效
标题翻译：先导注射控制系统
公开(公告)号：US5482016A
公开(公告)日：1996-01-09
申请号：US296708
申请日：1994-08-26
申请人： Takashi Ohishi , Hiroshi Ishiwata , Nobuhiro Kitahara
发明人： Takashi Ohishi , Hiroshi Ishiwata , Nobuhiro Kitahara
IPC分类号： F02B3/06 , F02D41/40 , F02M45/06 , F02M45/08 , F02M59/24 , F02M61/10 , F02M63/02 , F02M65/00 , F02B3/00
CPC分类号： F02D41/403 , F02D41/407 , F02M45/066 , F02M59/24 , F02B3/06 , F02D2200/063 , F02D41/402 , Y02T10/44
摘要： A pilot injection control system for an internal combustion engine comprises a plurality of fuel injection nozzles, the valve-opening pressure of one of which (the reference nozzle) is set slightly higher than that of the other nozzles, means for detecting the pilot injection of the reference nozzle, and means for feedback controlling the pilot injection quantity of the reference nozzle based on the detected pilot injection. The system is able to effectively control the pilot injection of all nozzles by actually controlling the pilot injection of only one nozzle and can therefore be implemented at low cost.
摘要翻译：用于内燃机的先导喷射控制系统包括多个燃料喷射喷嘴，其中一个（基准喷嘴）的开阀压力被设置为略高于其它喷嘴的开启压力，用于检测先导喷射的装置基准喷嘴，以及基于检测到的引燃喷射反馈控制基准喷嘴的引燃喷射量的装置。该系统能够通过实际控制仅一个喷嘴的先导喷射而有效地控制所有喷嘴的先导喷射，因此可以以低成本实现。

3. 发明授权

US5911207A Fuel injection pump 失效
标题翻译：燃油喷射泵
公开(公告)号：US5911207A
公开(公告)日：1999-06-15
申请号：US25664
申请日：1998-02-18
申请人： Takashi Ohishi , Toshihumi Noda , Tohru Yokota , Nobuhiro Kitahara
发明人： Takashi Ohishi , Toshihumi Noda , Tohru Yokota , Nobuhiro Kitahara
IPC分类号： F02M45/02 , F02M45/06 , F02M59/10 , F02M59/24 , F02M59/26 , F02M59/38 , F02M34/00 , F02B3/00
CPC分类号： F02M45/02 , F02M45/063 , F02M59/102 , F02M59/24 , F02M59/38
摘要： An objective of the present invention is to provide a fuel injection pump wherewith, in addition to main injection, pre-injection is made possible in the vicinity of top dead center in the exhaust stroke, and wherewith, by regulating the pre-stroke, defined as the stroke from bottom dead center of a plunger 2 to the commencement of fuel line pressurization, it is possible to freely control both the pre-injection volume and the pre-injection timing relative to the main injection. Attention having been given to the combining of a pre-stroke varying mechanism together with a two-stage injection mechanism, the present invention is a fuel injection pump that is made so that a pre-stroke is regulated by changing the relative positions, in the axial direction, of a plunger 2 that sends fuel under pressure and a control sleeve 3 that fits around the outside of the plunger 2 so as to slide freely thereon. The cam 4 that drives the plunger 2 comprises a main cam nose 20 for main injection use and a pre cam nose 21 for pre-injection use.
摘要翻译：本发明的目的是提供一种燃料喷射泵，除了主喷射之外，在排气冲程中的上死点附近也可以进行预喷射，并且通过调节前冲程来定义作为从柱塞2的下止点到燃料管路加压开始的冲程，可以相对于主喷射自由地控制预喷射量和预喷射正时。注意到将前冲程变化机构与两级喷射机构结合在一起，本发明是一种燃料喷射泵，其被制成使得通过改变相对位置来调节前冲程，在在压力下发送燃料的柱塞2的轴向方向以及围绕柱塞2的外部配合以便在其上自由滑动的控制套筒3。驱动柱塞2的凸轮4包括用于主要注射用途的主凸轮鼻20和用于预注射使用的预凸轮鼻21。

4. 发明授权

US5443047A Fuel injection system 失效
标题翻译：燃油喷射系统
公开(公告)号：US5443047A
公开(公告)日：1995-08-22
申请号：US224782
申请日：1994-04-08
申请人： Hiroshi Ishiwata , Takashi Ohishi , Atsushi Ueda , Naotake Ohi
发明人： Hiroshi Ishiwata , Takashi Ohishi , Atsushi Ueda , Naotake Ohi
IPC分类号： F02B3/06 , F02D41/40 , F02M45/06 , F02M57/02 , F02M59/36 , F02M59/46 , F02M41/14
CPC分类号： F02M45/066 , F02D41/403 , F02M57/02 , F02M57/023 , F02M59/366 , F02M59/466 , F02B3/06 , F02D41/402 , Y02T10/44
摘要： A solenoid valve unit is provided in the middle of fuel supply path that leads to a compression space in an injection pump main body, and the fuel injection quantity is adjusted through the open and close control of the solenoid valve unit. In this fuel injection system, the plug valve is moved until it is seated on the valve seat during the preliminary injection that is performed prior to the main injection. An arrangement for leaking the fuel from within the compression space is provided in the injection pump main body and the time period during which the fuel in the compression space is leaked via the arrangement for leaking and the time period during which the fuel supply path is restricted with the plug valve being seated on the valve seat are combined to stabilize the movement of the plug valve. Consequently, an optimal small quantity is achieved for the preliminary injection that is nearly constant regardless of the rate of rotation of the engine. Also, if a drive pulse that closes the fuel supply path over the period during which the fuel is leaked is supplied to the solenoid valve unit, the solenoid valve unit needs to be operated only once and stable injection characteristics are achieved from the pilot injection through the main injection.
摘要翻译：在燃料供给路径的中间设置有电磁阀单元，其通向喷射泵主体中的压缩空间，并且通过电磁阀单元的打开和关闭控制来调节燃料喷射量。在该燃料喷射系统中，在主喷射之前执行的预喷射期间，旋塞阀被移动直到其被安置在阀座上。在喷射泵主体中设置有用于从压缩空间泄漏燃料的装置，以及经由泄漏装置和压缩空间中的燃料泄漏燃料供给路径被限制的时间段将旋塞阀置于阀座上的组合以稳定旋塞阀的运动。因此，无论发动机的旋转速度如何，初始喷射的最佳量都是几乎恒定的。此外，如果在燃料泄漏期间关闭燃料供给路径的驱动脉冲被供给到电磁阀单元，则电磁阀单元仅需要操作一次，并且从先导喷射通过主要注射。

5. 发明授权

US5375575A Fuel-injection device 失效
标题翻译：燃油喷射装置
公开(公告)号：US5375575A
公开(公告)日：1994-12-27
申请号：US36863
申请日：1993-03-25
申请人： Takashi Ohishi , Mitsuhiro Fujita , Satoshi Yajima , Masahiko Shinagawa
发明人： Takashi Ohishi , Mitsuhiro Fujita , Satoshi Yajima , Masahiko Shinagawa
IPC分类号： F02B3/06 , F02D41/00 , F02D41/20 , F02D41/38 , F02D41/40 , F02M57/02 , F02M59/36 , F02M59/46 , F02D41/14
CPC分类号： F02D41/0085 , F02D41/20 , F02D41/38 , F02D41/40 , F02D41/401 , F02M57/02 , F02M59/366 , F02M59/466 , F02B3/06 , F02D2041/2027 , F02D2041/2051 , F02D2041/2055 , F02D2041/2058 , F02D2200/063 , F02D2200/503 , F02D41/008 , Y02T10/44
摘要： A fuel-injection device includes a solenoid valve which adjusts a fuel-injection level of a fuel-injection pump by adjusting its throttling for the fuel-injection passage to supply the fuel to a compressor. A driving pulse to drive the solenoid valve is formed taking various factors into consideration. For example, the driving pulse is composed of a segment having a large duty ratio and a segment having a small duty ratio in order to secure a responsiveness of the solenoid valve. The driving pulse is formed on the basis of a change in electrical voltage to drive the solenoid valve, varying levels of voltage drop in a wiring harness installed for every cylinder, and of varying levels of responsiveness unique with fuel-injection pumps.
摘要翻译：燃料喷射装置包括电磁阀，其通过调节燃料喷射通道的节流来调节燃料喷射泵的燃料喷射水平以将燃料供应给压缩机。考虑到各种因素，形成驱动电磁阀的驱动脉冲。例如，为了确保电磁阀的响应性，驱动脉冲由占空比大的部分和占空比小的部分构成。驱动脉冲基于电压变化来驱动电磁阀，对于每个气缸安装的线束中的电压降变化程度，以及燃料喷射泵独特的响应性水平。

6. 发明授权

US5277163A Fuel-injection device 失效
标题翻译：燃油喷射装置
公开(公告)号：US5277163A
公开(公告)日：1994-01-11
申请号：US27244
申请日：1993-03-03
申请人： Takashi Ohishi
发明人： Takashi Ohishi
IPC分类号： F02D41/04 , F02D41/20 , F02D41/40 , F02M57/02 , F02M59/36 , F02M41/00
CPC分类号： F02M57/023 , F02D41/20 , F02D41/40 , F02M57/02 , F02M59/366 , F02D2041/2055 , F02D2041/2058 , F02D2200/063 , Y02T10/44
摘要： A fuel-injection device adjusts a fuel-injection level with a solenoid valve disposed in a fuel-supply passage which supplies the fuel to a compressor. A pulse width of a drive pulse to actuate the solenoid valve, which is determined by the sum of a time lag in the valve's closing caused by the motion of the valve member of the solenoid valve and of the time length at which the valve is to remain closed, is made shorter than the time lag in the valve's closing when the engine load is low. Current supplied to the solenoid is thus cut off immediately before the solenoid valve is completely closed, and a preflow caused by a rise in injection-pressure is reduced.
摘要翻译：燃料喷射装置利用设置在向压缩机供给燃料的燃料供给通道中的电磁阀来调节燃料喷射量。用于致动电磁阀的驱动脉冲的脉冲宽度，该电磁阀由电磁阀的阀构件的运动引起的阀闭合时间的延迟与阀门到达的时间长度之和确定保持关闭，比发动机负荷低时阀门关闭时间滞后。因此，在电磁阀完全关闭之前，直接切断电磁线圈的电流，降低注入压力上升引起的预流。

7. 发明授权

US5115783A Method for varying the flow rate of fuel in a distributor-type electronic control fuel-injection pump 失效
标题翻译：用于改变分配器式电子控制燃料喷射泵中的燃料流量的方法
公开(公告)号：US5115783A
公开(公告)日：1992-05-26
申请号：US623655
申请日：1990-12-19
申请人： Hisashi Nakamura , Kenichi Kubo , Takashi Ohishi , Hosokawa Hitoshi
发明人： Hisashi Nakamura , Kenichi Kubo , Takashi Ohishi , Hosokawa Hitoshi
IPC分类号： F02D1/02 , F02B3/06 , F02D1/18 , F02D41/30 , F02D41/40 , F02M41/12 , F02M59/36 , F02M63/02
CPC分类号： F02M59/366 , F02D1/183 , F02D41/30 , F02D41/408 , F02M41/125 , F02M41/128 , F02M63/0215 , F02B3/06 , Y02T10/44
摘要： A method for varying the flow rate of fuel in a distributor-type electronic control fuel-injection pump. A single solenoid valve is used to control the timing of initiating and terminating fuel delivery. A cam is operated under four different modes, a low idle or a low speed/low load zone, a middle load zone, a high load zone, and a governing or high idle zone in that order as the cam is rotated. At the governing or high idle zone, the solenoid valve is closed before the cam is lifted and is opened to control fuel delivery when it is terminated.
摘要翻译：一种用于改变分配器式电子控制燃料喷射泵中的燃料流量的方法。单个电磁阀用于控制启动和终止燃油输送的时间。当凸轮旋转时，凸轮以四个不同的模式操作，低空闲或低速/低负载区域，中间负载区域，高负载区域以及调节或高空闲区域。在控制或高空闲区域，电磁阀在凸轮提升之前关闭，并且在其被终止时打开以控制燃料输送。

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