公开(公告)号：US5715797A

公开(公告)日：1998-02-10

申请号：US668382

申请日：1996-06-21

申请人： Kazuji Minagawa ,  Takeshi Matsuda ,  Kiyotoshi Oi ,  Shigeru Takeuchi ,  Takayoshi Yamaguchi

发明人： Kazuji Minagawa ,  Takeshi Matsuda ,  Kiyotoshi Oi ,  Shigeru Takeuchi ,  Takayoshi Yamaguchi

IPC分类号： F02D41/30 ,  F02D41/38 ,  F02M37/10 ,  F02M37/04

CPC分类号： F02D41/3082 ,  F02M37/10 ,  F02D2250/02 ,  F02D41/3809

摘要： A fuel supply system for an engine having no fuel return pipe is disclosed. In steps target fuel is set according to an engine operating state. Thereafter, a target current value to be supplied to the motor of a fuel pump according to the target fuel pressure is obtained. In the succeeding step, an actual motor current is detected and, then, the target current value and the detcted current are compared. Thereafter, the supply current is controlled by feedback based upon the difference obtained by comparison between the target current value and the detected current value to eliminate the difference.

摘要翻译： 公开了一种没有燃料回流管的发动机燃料供应系统。 在步骤中，目标燃料根据发动机运行状态设定。 此后，获得根据目标燃料压力供给到燃料泵的电动机的目标电流值。 在接下来的步骤中，检测到实际的电动机电流，然后比较目标电流值和被检测电流。 此后，通过基于通过比较目标电流值和检测到的电流值而获得的差异，通过反馈来控制电源电流，以消除差异。

公开(公告)号：US5842454A

公开(公告)日：1998-12-01

申请号：US740141

申请日：1996-10-22

申请人： Makoto Miwa ,  Naoki Yoshiume ,  Kiyotoshi Oi ,  Kazuji Minagawa ,  Shigeru Takeuchi ,  Akira Ando

发明人： Makoto Miwa ,  Naoki Yoshiume ,  Kiyotoshi Oi ,  Kazuji Minagawa ,  Shigeru Takeuchi ,  Akira Ando

IPC分类号： F02M37/08 ,  F02D41/06 ,  F02D41/30 ,  F02M37/10 ,  F02M37/04

CPC分类号： F02M37/10 ,  F02D41/3082 ,  F02D41/062

摘要： In a fuel pump control, until a rotational speed of an electrically-driven fuel pump rises to a predetermined speed, an electric current supplied to the fuel pump at an engine starting is increased higher than that normally supplied after engine starting thereby causing fast build-up of the fuel pressure. After the fuel pump reaches the predetermined speed, the electric current is decreased to a normal after-start current thereby suppressing a fuel pressure overshoot and resulting overrich mixture. Alternatively, a fuel pump speed is raised by the voltage control first at an engine starting operation, while switching the voltage control to the current control intermittently to detect the voltage applied to the fuel pump. When the detected voltage reaches a first predetermined voltage, the fuel pump speed is controlled exclusively by the current control.

摘要翻译： 在燃料泵控制中，在电动燃料泵的转速上升到规定的速度以前，在发动机起动时供给燃料泵的电流比发动机起动后通常供给的电流高， 燃油压力上升。 在燃料泵达到预定速度之后，电流降低到正常的起动后电流，从而抑制燃料压力过冲并产生过度混合。 或者，首先在发动机起动操作时通过电压控制来提高燃料泵速度，同时间歇地将电压控制切换到电流控制，以检测施加到燃料泵的电压。 当检测到的电压达到第一预定电压时，燃料泵速度由电流控制完全控制。

公开(公告)号：US6067963A

公开(公告)日：2000-05-30

申请号：US722683

申请日：1996-09-30

申请人： Kiyotoshi Oi ,  Kazuji Minagawa ,  Motoya Ito

发明人： Kiyotoshi Oi ,  Kazuji Minagawa ,  Motoya Ito

IPC分类号： F02M37/04 ,  F02M37/00 ,  F02M37/08 ,  F02M69/46 ,  F16K15/02 ,  F02M41/00 ,  F16K15/00

CPC分类号： F16K15/026 ,  F02M69/462 ,  F02M69/465

摘要： When differential pressure between fuel flowing into a fuel control valve and fuel flowing out of the valve reaches a predetermined value, the biasing force of a compressed coil spring is countered and a shaft in the valve moves to the fuel upstream side so that a valve member is seated to terminate communication between the fuel inlet passage and the fuel outlet passage. This maintains fuel pressure at the fuel inlet passage and at the fuel outlet passage at different levels so that the fuel supply system maintains a high fuel pressure in the fuel rail to suppress fuel vapor generation during engine stoppage while also yet still providing an appropriate fuel injection pressure during rapid deceleration of the vehicle.

摘要翻译： 当流入燃料控制阀的燃料和流出阀的燃料之间的压差达到预定值时，压缩螺旋弹簧的偏置力被反向，并且阀中的轴移动到燃料上游侧，使得阀构件 被安置以终止燃料入口通道和燃料出口通道之间的连通。 这维持燃料入口通道和燃料出口通道处于不同水平的燃料压力，使得燃料供应系统在燃料轨道中保持高燃料压力，以抑制发动机停止期间的燃料蒸气产生，同时仍然提供适当的燃料喷射 车辆快速减速时的压力。

公开(公告)号：US5711275A

公开(公告)日：1998-01-27

申请号：US700868

申请日：1996-08-21

申请人： Kazuji Minagawa ,  Kiyotoshi Oi ,  Katsumi Arai

发明人： Kazuji Minagawa ,  Kiyotoshi Oi ,  Katsumi Arai

IPC分类号： F02D41/30 ,  F02D41/38 ,  F02M69/54 ,  F02M41/00

CPC分类号： F02D41/3836 ,  F02D41/3082 ,  F02M69/54 ,  F02D2250/02 ,  F02D2250/31

摘要： A fuel pump is driven by a variable, constant current, control circuit. A pressure control valve disposed between the fuel pump and a fuel rail includes a downstream pressure control valve and a bypass valve bypassing the downstream pressure control valve. The downstream pressure control valve sets the fuel pressure in the fuel rail to a predetermined value by opening or closing a passage from a fuel pipe to the fuel rail. If the fuel pump discharge pressure is sufficiently increased, the bypass valve is opened when the upstream fuel pressure is larger than the downstream fuel pressure by at least a predetermined differential pressure. In this way, fuel is supplied to raise the fuel rail fuel pressure. Therefore, it is possible during other times to reduce the consumed electric power of the fuel pump and thus prolong its life.

摘要翻译： 燃油泵由可变恒定电流控制电路驱动。 设置在燃料泵和燃料导轨之间的压力控制阀包括下游压力控制阀和旁通下游压力控制阀的旁通阀。 下游压力控制阀通过打开或关闭从燃料管到燃料轨的通道将燃料轨中的燃料压力设定为预定值。 如果燃料泵排出压力充分增加，则当上游燃料压力大于下游燃料压力至少预定压差时，旁通阀打开。 以这种方式，供应燃料以提高燃料轨道的燃料压力。 因此，可以在其他时间降低燃料泵的消耗电力，延长其使用寿命。

公开(公告)号：US5699772A

公开(公告)日：1997-12-23

申请号：US577928

申请日：1995-12-22

申请人： Masao Yonekawa ,  Yoshihiro Majima ,  Makoto Miwa ,  Kazuji Minagawa ,  Kiyotoshi Oi

发明人： Masao Yonekawa ,  Yoshihiro Majima ,  Makoto Miwa ,  Kazuji Minagawa ,  Kiyotoshi Oi

IPC分类号： F02D41/30 ,  F02D41/32 ,  F02M37/08 ,  F02M69/46 ,  F02M37/04

CPC分类号： F02D41/32 ,  F02D41/3082 ,  F02M37/08 ,  F02M69/462 ,  F02M69/465 ,  F02D2200/0602 ,  F02D2250/02 ,  F02D2250/31 ,  F02M2037/087

摘要： In a fuel supply system of an internal combustion engine, an actual fuel pressure Pf is measured by a differential pressure sensor and the actual fuel pressure Pf is averaged in a different degree to determine two kinds of values Pfs and Pft. The value Pfs is used to control the fuel pressure, while the value Pft is used to correct a pulse width. Then, a correction value Vfpci is determined according to the load applied to the engine and used in a feedback control to adjust a fuel discharge pressure of a fuel pump.

摘要翻译： 在内燃机的燃料供给系统中，通过差压传感器测量实际燃料压力Pf，并且实际燃料压力Pf以不同程度被平均以确定两种值Pfs和Pft。 值Pfs用于控制燃料压力，而Pft值用于校正脉冲宽度。 然后，根据施加到发动机的负荷来确定校正值Vfpci，并用于反馈控制中以调节燃料泵的燃料排放压力。

公开(公告)号：US5558063A

公开(公告)日：1996-09-24

申请号：US535632

申请日：1995-09-28

申请人： Kazuji Minagawa ,  Kiyotoshi Oi ,  Takashi Akiba

发明人： Kazuji Minagawa ,  Kiyotoshi Oi ,  Takashi Akiba

IPC分类号： F02D33/00 ,  F02D41/06 ,  F02D41/30 ,  F02M37/00 ,  F02M37/20 ,  F02M69/00 ,  F02M69/30 ,  F02M69/54 ,  F02M41/00 ,  F02M37/04

CPC分类号： F02D33/006 ,  F02D41/065 ,  F02D41/3082 ,  F02M37/0029 ,  F02M37/0052 ,  F02M69/30 ,  F02M69/54

摘要： A fuel supply system for an engine comprises a fuel pump for supplying fuel to fuel injectors, a pump controller which increases the fuel delivery flow rate from the fuel pump during hot restarting or high load running of the engine and a pressure regulator disposed in a fuel supply passage between the fuel pump and the injectors for adjusting the fuel supply pressure at which fuel is supplied to the injectors. The pressure regulator adjusts the fuel supply pressure according to an excess fuel flow rate of fuel returned to the fuel tank from the pressure regulator to a low-pressure side control pressure region over a first excess fuel flow rate range and to a high-pressure side control pressure region over a second excess fuel flow rate range. Based on simple electronic control of the fuel pump the pressure regulator keeps the fuel supply pressure in the high-pressure side control pressure region during hot restarting and high load running of the engine and thereby suppresses the arrival of fuel vapor at the injectors and improves the hot restarting and high load running characteristics of the engine.

摘要翻译： 用于发动机的燃料供应系统包括用于向燃料喷射器供应燃料的燃料泵，一个泵控制器，其在发动机的热重启或高负载运行期间增加燃料泵的燃料输送流量，以及设置在燃料中的压力调节器 燃料泵和喷射器之间的供应通道，用于调节向喷射器供应燃料的燃料供应压力。 压力调节器根据在第一过剩燃料流量范围内从压力调节器返回到低压侧控制压力区域的燃料的过剩燃料流量和高压侧来调节燃料供应压力 控制压力区域超过第二过量燃料流量范围。 基于燃料泵的简单电子控制，压力调节器在发动机的热重启和高负载运行期间将燃料供应压力保持在高压侧控制压力区域中，从而抑制燃料蒸汽到达喷射器，并且改善 发动机的热重启动和高负载运行特性。

公开(公告)号：US5758627A

公开(公告)日：1998-06-02

申请号：US816423

申请日：1997-03-14

申请人： Kazuji Minagawa ,  Makoto Miwa ,  Kiyotoshi Oi

发明人： Kazuji Minagawa ,  Makoto Miwa ,  Kiyotoshi Oi

IPC分类号： B01D27/06 ,  B01D27/08 ,  B01D35/02 ,  B01D35/027 ,  F02M37/10 ,  F02M37/22 ,  F02M55/00 ,  F02M37/04

CPC分类号： B01D35/0273 ,  F02M37/10 ,  F02M37/22 ,  F02M2037/228

摘要： A fuel filter having a filter element and fuel pump in a housing is disposed in a fuel tank. The filter element has a partition in contact with the fuel outlet side of the element. Fuel filtered by the element is divided into two stream passages, one of which is a return passage to the fuel tank and the other is a supply passage to fuel injectors of a common rail mounted on an engine. The amount of the stream returning to the tank is larger than the amount of the other stream so that a substantial amount of foreign particles in the fuel tank are carried by the returning stream and filtered. As a result, foreign particles may not so thickly accumulate on the filter portion in the supply passage.

摘要翻译： 具有过滤元件和燃料泵的燃料过滤器设置在燃料箱中。 过滤元件具有与元件的燃料出口侧接触的隔板。 由元件过滤的燃料被分成两条流道，其中一条是通往燃料箱的回流通道，另一条是一个安装在发动机上的共轨燃油喷射器的供气通道。 返回到罐的料流的量大于其它料流的量，使得燃料箱中的大量外来颗粒由返回流运送并过滤。 结果，外来颗粒可能不会如此厚地堆积在供应通道中的过滤器部分上。

公开(公告)号：US5797374A

公开(公告)日：1998-08-25

申请号：US694065

申请日：1996-08-08

申请人： Kazuji Minagawa ,  Kiyotoshi Oi

发明人： Kazuji Minagawa ,  Kiyotoshi Oi

IPC分类号： F02M37/00 ,  F02D41/04 ,  F02D41/30 ,  F02D41/38 ,  F02M37/08 ,  F02M37/04

CPC分类号： F02D41/042 ,  F02D41/3082 ,  F02D41/3809 ,  F02M2037/087

摘要： A pressure control valve includes a downstream pressure control valve disposed between a fuel pipe and a fuel rail. An opening-closing valve can be integrally formed with the downstream pressure control valve. A relief valve can be disposed to bypass the downstream pressure control valve. The downstream pressure control valve opens or closes the fuel passage leading to the fuel rail so that fuel pressure in the fuel rail is maintained at a predetermined value. When the engine is stopped, the fuel passage is closed to decrease leakage of fuel from the fuel injector. When the fuel pump is again operated, the by-pass relief valve is opened by the pressure of fuel in the fuel pipe. Thus, fuel is supplied from an upstream side to a downstream side and fuel pressure in the fuel rail is increased rapidly for engine re-start.

摘要翻译： 压力控制阀包括设置在燃料管和燃料轨之间的下游压力控制阀。 开闭阀可与下游压力控制阀一体形成。 可以设置安全阀以绕过下游压力控制阀。 下游压力控制阀打开或关闭通向燃料轨的燃料通道，使燃料轨中的燃料压力保持在预定值。 当发动机停止时，燃料通道关闭以减少来自燃料喷射器的燃料泄漏。 当再次操作燃油泵时，旁通溢流阀由燃料管中的燃料压力打开。 因此，从上游侧向下游侧供给燃料，燃料轨中的燃料压力迅速增加，用于发动机再起动。

公开(公告)号：US5651347A

公开(公告)日：1997-07-29

申请号：US654269

申请日：1996-05-28

申请人： Kiyotoshi Oi ,  Kazuji Minagawa ,  Masao Yonekawa

发明人： Kiyotoshi Oi ,  Kazuji Minagawa ,  Masao Yonekawa

IPC分类号： F02D41/04 ,  F02D41/30 ,  F02D41/38 ,  F02M37/08 ,  F02M37/20 ,  F02M37/04

CPC分类号： F02D41/3082 ,  F02M37/08 ,  F02D2250/02 ,  F02D2250/31 ,  F02D41/042 ,  F02D41/3809 ,  F02M2037/087

摘要： According to the present invention, a fuel supply apparatus includes a fuel pump, a delivery pipe to distribute the fuel to each injector of the engine by receiving fuel supply by the fuel pump, a pressure sensor to detect the fuel pressure supplied to the delivery pipe, and a check valve disposed in the fuel discharge pipe of the fuel pump to prevent counterflow of the fuel from the delivery pipe. The amount of fuel discharged from the fuel pump is controlled to maintain the fuel pressure in the delivery pipe at a set value during fuel injection. At the stop of the engine, the amount of fuel discharged from the fuel pump is substantially reduced to zero, and the pressure of the fuel from the fuel pump is gradually reduced. After the pressure of the fuel discharged from the fuel pump reaches a predetermined value, the fuel pump stops. In this way the internal pressure of the delivery pipe is prevented from excessively rising without exterior parts such as a relief valve disposed outside of the fuel pump.

摘要翻译： 根据本发明，燃料供给装置包括燃料泵，通过接收燃料泵的燃料供给而将燃料分配到发动机的每个喷射器的输送管，用于检测供给到输送管的燃料压力的压力传感器 以及设置在燃料泵的燃料排出管中的止回阀，以防止燃料从输送管逆流。 控制从燃料泵排出的燃料量，以在燃料喷射期间将输送管中的燃料压力维持在设定值。 在发动机停止时，从燃料泵排出的燃料量大幅降低至零，并且来自燃料泵的燃料的压力逐渐降低。 在从燃料泵排出的燃料的压力达到预定值之后，燃料泵停止。 以这种方式，防止排出管的内部压力过度上升，而没有外部部件例如设置在燃料泵外部的安全阀。

公开(公告)号：US5586539A

公开(公告)日：1996-12-24

申请号：US587447

申请日：1995-12-01

申请人： Masao Yonekawa ,  Kazuji Minagawa ,  Kiyotoshi Oi ,  Makoto Miwa ,  Yoshihiro Majima

发明人： Masao Yonekawa ,  Kazuji Minagawa ,  Kiyotoshi Oi ,  Makoto Miwa ,  Yoshihiro Majima

IPC分类号： F02M25/08 ,  F02D41/00 ,  F02D41/02 ,  F02D41/30 ,  F02D41/34 ,  F02M37/00 ,  F02M37/08

CPC分类号： F02D41/3082 ,  F02D41/0042 ,  F02D2200/0606 ,  F02M2037/085

摘要： A fuel supplying apparatus controls fuel pressure according to engine operating conditions to prevent blow-through of injected fuel into the exhaust system and hyper-vaporization of fuel. When the engine is being started and the fuel temperature is high, or when the engine has just started and the fuel temperature is high, a target fuel pressure is determined according to the fuel temperature. When a predetermined time has elapsed following the starting of the engine, or when the fuel temperature is not high (even if the predetermined time has not elapsed), it is determined whether fuel vapor is being purged from a canister into an intake pipe. The canister traps fuel vapor from a fuel tank. If the fuel purging is being performed, the apparatus determines whether the current engine operation is in a low-load region. If the fuel purging is being performed and the engine operation is in the low-load region, the apparatus computes a target fuel pressure according to the fuel purging conditions. If the fuel purging is not being performed, or if the engine operation is not in the low-load region, the target fuel pressure is determined as a basic target fuel pressure.

摘要翻译： 燃料供给装置根据发动机运转条件来控制燃料压力，以防止喷射的燃料吹入排气系统，并使燃料高度蒸发。 当发动机起动并且燃料温度高时，或者当发动机刚刚启动并且燃料温度高时，根据燃料温度来确定目标燃料压力。 当在发动机起动之后经过了预定时间时，或者当燃料温度不高时（即使没有经过预定时间），确定是否将燃料蒸气从罐排出到进气管中。 罐从燃料箱捕获燃料蒸气。 如果正在执行燃料净化，则该装置确定当前的发动机运转是否处于低负载区域。 如果正在执行燃料净化并且发动机操作处于低负载区域，则该装置根据燃料吹扫条件来计算目标燃料压力。 如果没有执行燃料净化，或者如果发动机运转不在低负荷区域，则将目标燃料压力确定为基本目标燃料压力。