公开(公告)号：US5785025A

公开(公告)日：1998-07-28

申请号：US928401

申请日：1997-09-12

申请人： Naoki Yoshiume ,  Makoto Miwa ,  Shigenori Isomura

发明人： Naoki Yoshiume ,  Makoto Miwa ,  Shigenori Isomura

IPC分类号： F02D33/00 ,  F02D41/12 ,  F02D41/22 ,  F02D41/30 ,  F02D41/38 ,  F02M37/00 ,  F02M37/08 ,  F02M37/10 ,  F02M69/46 ,  F02M69/54 ,  F02M41/00 ,  F02M37/04

CPC分类号： F02D33/003 ,  F02D41/22 ,  F02D41/3082 ,  F02D41/3818 ,  F02M37/0029 ,  F02M37/0058 ,  F02M37/10 ,  F02M69/462 ,  F02M69/54 ,  F02D2200/0602 ,  F02D2250/31 ,  F02D41/123

摘要： In a fuel supply system employing a returnless fuel pipe arrangement, a relief valve is provided at a discharge side of a fuel pump. The relief valve is opened when fuel pressure in the fuel pipe arrangement becomes no less than a system protective pressure, so as to relieve the fuel pressure to protect the system. The relief valve is also arranged to be open when the fuel pressure in the fuel pipe arrangement becomes higher than a target fuel pressure by a predetermined value or when the fuel cut is performed. Thus, the fuel pressure in the fuel pipe arrangement is lowered. Thereafter, when the fuel pressure in the fuel pipe arrangement is lowered to a pressure near the target fuel pressure, the relief valve is arranged to be closed so that the fuel pressure in the fuel pipe arrangement is held substantially at the target fuel pressure.

摘要翻译： 在采用无回流燃料管路装置的燃料供给系统中，在燃料泵的排出侧设置有安全阀。 当燃料管装置中的燃料压力变得不小于系统保护压力时，安全阀打开，以便减轻燃料压力以保护系统。 当燃料管道装置中的燃料压力高于目标燃料压力预定值时或者当执行燃料切断时，安全阀也被布置成打开。 因此，燃料管路装置中的燃料压力降低。 此后，当燃料管路装置中的燃料压力降低到接近目标燃料压力的压力时，安全阀被设置为关闭，使得燃料管路装置中的燃料压力基本上保持在目标燃料压力。

公开(公告)号：US06223731B1

公开(公告)日：2001-05-01

申请号：US08920728

申请日：1997-08-29

申请人： Naoki Yoshiume ,  Shigenori Isomura

发明人： Naoki Yoshiume ,  Shigenori Isomura

IPC分类号： F02M5704

CPC分类号： F02D41/3082 ,  F02D41/1401 ,  F02D41/3836 ,  F02D41/3845 ,  F02D2041/1433 ,  F02D2041/1434 ,  F02D2250/02

摘要： A fuel transfer model of a fuel supply system is used to set and control the fuel pump of a return less fuel injection system. The model simulates characteristics of the fuel pump, fuel pressure transfer delay of fuel supply conduits and fuel pressure variation characteristics such as caused by expansion and compression of the fuel supply conduit volume due to an elastic coefficient and the like. The fuel pump model simulates a torque applied to the fuel pump motor, inertia, and the relationships between pump rotational speed, fuel pressure and fuel pump discharge amounts. A compensation control arithmetic calculation model may be derived from inverse calculation based on this fuel transfer model. The compensating current obtained from such an arithmetic model provides compensation for control of the fuel pump by adding a first value obtained by waveform shaping (through a first differentiation of the fuel injection amount) and a second value obtained by waveform shaping (through a second differentiation of the fuel injection amount).

摘要翻译： 燃料供给系统的燃料传递模型用于设置和控制回流燃料喷射系统的燃料泵。 该模型模拟燃料泵的特性，燃料供应管道的燃料压力传递延迟以及由于弹性系数等导致的燃料供应管道体积的膨胀和压缩引起的燃料压力变化特性。 燃油泵型号模拟施加到燃油泵电机的转矩，惯性以及泵转速，燃料压力和燃油泵排出量之间的关系。 可以基于该燃料转移模型从逆计算导出补偿控制算术计算模型。 由这种算术模型获得的补偿电流通过将通过波形整形（通过燃料喷射量的第一微分）获得的第一值和通过波形整形获得的第二值（通过第二微分） 的燃料喷射量）。

公开(公告)号：US5850818A

公开(公告)日：1998-12-22

申请号：US707251

申请日：1996-09-03

申请人： Naoki Yoshiume ,  Makoto Miwa

发明人： Naoki Yoshiume ,  Makoto Miwa

IPC分类号： F02M37/08 ,  F02D33/00 ,  F02M37/00 ,  F02M37/04

CPC分类号： F02D33/003 ,  F02M37/0058

摘要： Electric current to a fuel pump in an engine fuel supply system is controlled so that a deviation in the number of pump rotations between a predetermined reference number of rotations of the fuel pump and an actual number of rotations thereof is within a predetermined range. When the deviation exceeds a predetermined range, it is determined that the fuel supply system is abnormal and at this time the operation of the fuel pump is limited. In this manner, the electric power consumed by the fuel pump is reduced because excess fuel is not circulated in the fuel supply system, thus accomplishing an improved reliability.

摘要翻译： 控制发动机燃料供给系统中的燃料泵的电流，使得燃料泵的预定基准转数和其实际转数之间的泵转数的偏差在预定范围内。 当偏差超过预定范围时，确定燃料供给系统异常，此时燃料泵的运转受到限制。 以这种方式，燃料泵消耗的电力由于过量燃料在燃料供给系统中不循环而降低，从而实现了可靠性的提高。

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：US5749344A

公开(公告)日：1998-05-12

申请号：US760987

申请日：1996-12-05

申请人： Naoki Yoshiume ,  Makoto Miwa

发明人： Naoki Yoshiume ,  Makoto Miwa

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

CPC分类号： F02D41/3082

摘要： Throttle valve opening and engine rotational speed are detected to estimate intake air pressure. Fuel consumption Q is estimated from the estimated intake air pressure. Fuel pump drive voltage is calculated from estimated intake air pressure and estimated fuel consumption through a data map. This map is set in advance from data measured experimentally. By thus driving the fuel pump, it can be controlled at an earlier (i.e., advanced) relative time by taking the response time delay of the control system and the fuel pump into consideration.

摘要翻译： 检测节流阀开度和发动机转速以估计进气压力。 从估计的进气压力估算燃油消耗量Q。 通过数据图从估计的进气压力和估计的燃料消耗量计算燃油泵的驱动电压。 该地图从实验测量的数据提前设置。 通过这样驱动燃料泵，可以通过考虑控制系统和燃料泵的响应时间延迟来较早地（即先进的）相对时间地控制燃料泵。

公开(公告)号：US5723780A

公开(公告)日：1998-03-03

申请号：US657359

申请日：1996-06-03

申请人： Makoto Miwa ,  Naoki Yoshiume

发明人： Makoto Miwa ,  Naoki Yoshiume

IPC分类号： F02M37/00 ,  F02D41/22 ,  F02D41/30 ,  F02D41/38 ,  F02D45/00 ,  F02M37/08 ,  G01M15/00

CPC分类号： F02D41/3845 ,  F02D41/22 ,  F02D41/221 ,  F02D41/3082 ,  F02D2041/224 ,  F02D2200/0602 ,  F02D2200/702 ,  F02D2250/31

摘要： In a fuel supply system for an internal combustion engine, a feedback correction amount relative to a reference control value for a fuel pump is derived based on a deviation between an actual fuel pressure detected by a pressure sensor and a target fuel pressure. Since the feedback correction amount is controlled to be around zero during normal operation of the system, it is checked whether the feedback correction amount is within a given range. If negative, an occurrence of abnormality in the system is determined when a residual fuel amount in a fuel tank is no less than a criterion value and further when a vehicle is not running on a rough road. When the occurrence of abnormality is determined, a failure flag is set to ON while a failure determination enabling flag is reset to OFF so as to prohibit execution of a given other failure determination process such as a misfire detection process.

摘要翻译： 在用于内燃机的燃料供给系统中，基于由压力传感器检测到的实际燃料压力与目标燃料压力之间的偏差导出相对于燃料泵的参考控制值的反馈校正量。 由于在系统的正常操作期间将反馈校正量控制在大约零，所以检查反馈校正量是否在给定范围内。 如果为负，当燃料箱中的残余燃料量不低于标准值并且当车辆不在粗糙的道路上行驶时，确定系统中的异常发生。 当确定异常发生时，故障判定使能标志被复位为OFF，故障标志设置为ON，以禁止执行诸如失火检测处理之类的给定其他故障确定处理。

公开(公告)号：US5694902A

公开(公告)日：1997-12-09

申请号：US756335

申请日：1996-11-26

申请人： Makoto Miwa ,  Naoki Yoshiume

发明人： Makoto Miwa ,  Naoki Yoshiume

IPC分类号： F02M37/08 ,  F02D41/12 ,  F02D41/30 ,  F02D41/38 ,  F02M51/00

CPC分类号： F02D41/3845 ,  F02D41/123 ,  F02D41/126 ,  F02D41/3082 ,  F02D2041/1422 ,  F02D2250/02 ,  F02D2250/31

摘要： A fuel cut-off operation is delayed until a predetermined delay time period elapses after a fuel cut-off condition is satisfied. During the delay period, the voltage for driving a fuel pump is gradually dropped to decrease the rotation speed of the fuel pump gradually. Thus, the discharge pressure of the fuel pump is low and hence the rise of a fuel pressure immediately after the fuel cut-off operation starts can be prevented. After the fuel cut-off condition, updating of a fuel pressure feedback correction amount is prohibited until the fuel cut-off operation terminates. In this manner, a feedback control immediately after the fuel cut-off operation terminates is executed by using the feedback correction amount used immediately before the fuel cut-off condition to prevent the drop of the fuel pressure immediately after the fuel cut-off operation terminates. Thus, the fuel pressure can be maintained at a target fuel pressure.

摘要翻译： 燃料切断操作被延迟，直到满足燃料切断条件之后经过预定的延迟时间。 在延迟期间，用于驱动燃料泵的电压逐渐下降，逐渐降低燃料泵的转速。 因此，燃料泵的排出压力低，能够防止燃料切断动作刚刚开始后的燃料压力上升。 在燃料切断条件之后，禁止燃料压力反馈校正量的更新，直到燃料切断操作终止。 以这种方式，通过使用在燃料切断条件之前使用的反馈校正量来执行在燃料切断操作结束之后的反馈控制，以防止在燃料切断操作结束后立即燃油压力下降 。 因此，可以将燃料压力维持在目标燃料压力。

公开(公告)号：US07248960B2

公开(公告)日：2007-07-24

申请号：US11520812

申请日：2006-09-14

申请人： Noriaki Ikemoto ,  Naoki Yoshiume ,  Yukihiro Yamashita

发明人： Noriaki Ikemoto ,  Naoki Yoshiume ,  Yukihiro Yamashita

IPC分类号： G06G7/70 ,  G06F19/00 ,  G01M15/04

CPC分类号： F02D41/1495 ,  F02D41/1456

摘要： An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The monitored response rates are used in determining whether the sensor is failing or not, in determining the air-fuel ratio of the mixture accurately, or in air-fuel ratio control of the engine.

公开(公告)号：US20080135002A1

公开(公告)日：2008-06-12

申请号：US11946083

申请日：2007-11-28

申请人： Naoki Yoshiume ,  Toshifumi Hayami

发明人： Naoki Yoshiume ,  Toshifumi Hayami

IPC分类号： F01L1/34 ,  F01L9/02

CPC分类号： F01L1/3442 ,  F02D41/083 ,  F02D2041/001 ,  F02D2250/22

摘要： A controller is provided to an engine including a variable valve timing unit for manipulating a valve timing of an intake valve of the engine. The controller includes an idle-continuation determining unit for determining whether an idling operation of the engine is in a continued state. The controller further includes a torque reserve control unit for executing a torque reserve control to advance the valve timing and increase an intake air quantity of the engine within a combustion limit of the engine when the idle-continuation determining unit determines that the idling operation is in the continued state. The controller further includes a torque correction unit for executing a torque correction control to retard the valve timing in the torque reserve control in at least one of conditions where: an auxiliary device exerts a load; the load is increased; and a vehicle starts moving.

摘要翻译： 控制器提供给包括用于操纵发动机的进气门的气门正时的可变气门正时单元的发动机。 控制器包括用于确定发动机的空转操作是否处于连续状态的怠速继续确定单元。 控制器还包括扭矩储备控制单元，用于执行扭矩储备控制以提前气门正时，并且当怠速继续确定单元确定空转操作是在发动机的燃烧极限时，增加发动机的燃烧极限内的进气量 持续状态。 控制器还包括扭矩校正单元，用于执行扭矩校正控制以在至少一个以下条件中延迟转矩保持控制中的气门正时：辅助装置施加负载; 负载增加; 车辆开始移动。

公开(公告)号：US07103467B2

公开(公告)日：2006-09-05

申请号：US11089333

申请日：2005-03-25

申请人： Yuri Takahashi ,  Hisashi Iida ,  Shuujirou Morinaga ,  Naoki Yoshiume

发明人： Yuri Takahashi ,  Hisashi Iida ,  Shuujirou Morinaga ,  Naoki Yoshiume

IPC分类号： F02D45/00 ,  G06F17/00

CPC分类号： F02D41/222 ,  F02D41/1454 ,  Y02T10/40

摘要： When the output of the AFR ratio sensor is stable in a steady operating state, the amount of fuel is increased by step inputting to detect a point where the gradient of change in the sensor output exceeds a threshold value as a point of start of change. The time from the timing of increasing the fuel until the point of start of change is detected as a dead time. A response time is calculated until the amount of change in the sensor output reaches a predetermined ratio of the amount of change (AA−BA) of up to the steady value AA of the sensor output after the amount of the fuel is increased from the steady value BA of the sensor output before the amount of the fuel is increased. The fail condition in the AFR ratio sensor is determined based on the dead time TA and the response time TB.

摘要翻译： 当AFR比传感器的输出在稳定运行状态下稳定时，通过步进输入增加燃料量，以检测传感器输出的变化梯度超过阈值作为变化点的点。 从增加燃料的时间到变化开始的时间被检测为死区时间。 计算出响应时间，直到传感器输出的变化量达到预定量的变化量（AA-BA），直到传感器输出的稳定值AA从稳定值增加为止 在燃料量增加之前传感器输出的值BA。 基于死区时间TA和响应时间TB确定AFR比传感器的故障条件。