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91. 发明申请

US20040020465A1 Pressure-elevating type fuel injecting system 失效
标题翻译：升压型燃油喷射系统
公开(公告)号：US20040020465A1
公开(公告)日：2004-02-05
申请号：US10622691
申请日：2003-07-21
发明人： Keiki Tanabe , Susumu Kohketsu , Shinji Nakayama
IPC分类号： F02D041/22
CPC分类号： F02D41/22 , F02D41/3809 , F02D2041/223 , F02D2041/224
摘要： A pressure-elevating type fuel injecting system selectively injects via injectors fuel stored in a common rail or fuel whose pressure is elevated by a pressure elevating mechanism into a combustion chamber, and comprises a crank angle sensor producing crank pulse signals in accordance with operating states of an engine, a pulse interval calculating unit calculating pulse intervals between respective crank pulse signals, and a determination unit determining the malfunction of the pressure elevating mechanism when a variation of the pulse interval is above a determination threshold.
摘要翻译：压力升高型燃料喷射系统通过喷射器选择性地将存储在通过压力升高机构升高的共轨或燃料中的燃料喷射到燃烧室中，并且包括根据操作状态产生曲柄脉冲信号的曲轴转角传感器发动机，计算各个曲柄脉冲信号之间的脉冲间隔的脉冲间隔计算单元，以及当脉冲间隔的变化高于确定阈值时确定压力升高机构的故障的确定单元。

92. 发明申请

US20040020281A1 Method and device for monitoring a fuel system of an internal combustion engine 失效
标题翻译：用于监测内燃机的燃料系统的方法和装置
公开(公告)号：US20040020281A1
公开(公告)日：2004-02-05
申请号：US10275217
申请日：2003-06-09
发明人： Stephan Schilling , Wolfgang Dehmel , Andreas Kellner
IPC分类号： G01M019/00
CPC分类号： F02D41/3845 , F02D41/221 , F02D41/3863 , F02D2041/1432 , F02D2041/224 , F02D2200/0602
摘要： A device and a method of monitoring a fuel metering system of an internal combustion engine, in particular a common rail system, are described. The fuel is compressed by a pump, and a pressure variable characterizing the fuel pressure is determined. An error is detected when a filtered pressure variable deviates from a threshold value.
摘要翻译：描述了一种监视内燃机，特别是共轨系统的燃料计量系统的装置和方法。燃料被泵压缩，并且确定表征燃料压力的压力变量。当过滤的压力变量偏离阈值时，检测到错误。

93. 发明授权

US06647769B1 Failure diagnostic system for engine 有权
标题翻译：发动机故障诊断系统
公开(公告)号：US06647769B1
公开(公告)日：2003-11-18
申请号：US09696060
申请日：2000-10-25
申请人： Kenichi Fujino , Hitoshi Motose
发明人： Kenichi Fujino , Hitoshi Motose
IPC分类号： G01M1500
CPC分类号： F02D41/3836 , F02B61/045 , F02B77/08 , F02D41/1454 , F02D41/221 , F02D41/3082 , F02D41/3863 , F02D2041/224 , F02D2200/0404 , F02D2200/0414 , F02D2200/0602 , F02M65/00
摘要： A diagnostic system is provided for aiding a technician or engineer in verifying that a fuel injector in a fuel injected engine is operating properly. The diagnostic system comprises a controller operatively coupled to an actuator for the fuel injector and to a fuel pressure sensor. The controller is configured such that, during a fuel injector test, the controller outputs a signal to the fuel pump so that pressurized fuel is supplied to the fuel injector. After the pressurized fuel is supplied to the fuel injector, the controller outputs a signal to the actuator to operate the fuel injector for a predetermined amount of time. The controller is also configured such that after the predetermined amount of time the fuel pump is turned off.
摘要翻译：提供诊断系统用于帮助技术人员或工程师验证燃油喷射发动机中的燃料喷射器是否正常工作。诊断系统包括可操作地联接到用于燃料喷射器的致动器和燃料压力传感器的控制器。控制器构造成使得在燃料喷射器测试期间，控制器向燃料泵输出信号，使得加压的燃料被供应到燃料喷射器。在向燃料喷射器供应加压燃料之后，控制器向致动器输出一个信号以使燃料喷射器操作预定的时间量。控制器也被构造成使得在预定时间之后燃料泵被关闭。

94. 发明授权

US06609501B2 Fuel pressure regulation system 失效
公开(公告)号：US06609501B2
公开(公告)日：2003-08-26
申请号：US09833375
申请日：2001-04-12
申请人： Kirk D. Doane , John D. Zmierski
发明人： Kirk D. Doane , John D. Zmierski
IPC分类号： F02M5920
CPC分类号： F02D41/3845 , F02D41/3082 , F02D2041/2058 , F02D2041/224 , F02D2041/389 , F02D2200/0602 , F02M55/00 , F02M55/02 , F02M63/0225 , F02M69/462 , F02M2037/085
摘要： A fuel pressure regulation system for an internal combustion engine to regulate fuel pressure using a two-state pressure switch. In addition to the pressure switch, the system includes a control circuit, a current sensor, and a fuel pressure control device such as a fuel pump. The control circuit uses the pressure switch to sense whether the downstream fuel pressure is above or below a desired reference pressure. When below the reference pressure, the control circuit drives the fuel pump at full on to increase the fuel line pressure to the reference pressure. Once the fuel pressure rises and increases to or past the reference pressure, the pressure switch changes state, at which point the current sensor is used to sample and record the magnitude of the electric current supplied to the fuel pump at the moment the switch state changes. As long as the fuel line pressure is above the reference pressure, this stored value is used as a reference value in conjunction with the current measurement reading from the current sensor to provide closed loop control of the fuel pump operating current.

95. 发明授权

US06564616B2 Method of diagnosing leakage in an internal combustion engine common-rail injection system 有权
公开(公告)号：US06564616B2
公开(公告)日：2003-05-20
申请号：US09993380
申请日：2001-11-14
申请人： Pierpaolo Antonioli , Cristiana Davide , Mario Reale
发明人： Pierpaolo Antonioli , Cristiana Davide , Mario Reale
IPC分类号： G01M304
CPC分类号： F02D41/1497 , F02D41/0085 , F02D41/221 , F02D41/3809 , F02D2041/224 , F02D2041/225 , F02D2041/389 , F02D2200/1004 , F02D2200/1012 , F02D2200/1015 , F02D2250/18
摘要： There is described a method of diagnosing leakage in a common-rail injection system of an internal combustion engine having a number of cylinders; the injection system having a number of injectors, each supplying high-pressure fuel to a respective cylinder of the engine, and a fuel supply circuit supplying fuel to the injectors. The diagnosis method includes the steps of determining the contribution of each cylinder to the angular acceleration of the engine; determining, for each cylinder, an unbalance index indicating the unbalance of the angular acceleration contribution of the cylinder with respect to the angular acceleration contributions of the other cylinders; reducing, upon detection of a fault in the injection system, the amount of fuel injected into each cylinder; and distinguishing, for each injector, between a jammed-open injector condition and a fault condition in the fuel supply circuit, on the basis of the variation in the unbalance index of the respective cylinder following the fuel reduction.

96. 发明申请

US20030037769A1 Method, computer program, and control and /or regulating device for operating an internal combustion engine 失效
标题翻译：方法，计算机程序以及用于操作内燃机的控制和/或调节装置
公开(公告)号：US20030037769A1
公开(公告)日：2003-02-27
申请号：US10224216
申请日：2002-08-20
发明人： Thomas Frenz , Winfried Langer , Stefan Keller , Marco Zucchini
IPC分类号： F02M001/00
CPC分类号： F02D41/3845 , F02D41/1498 , F02D41/22 , F02D2041/224 , F02D2200/0602 , F02D2200/1015 , F02M37/0047
摘要： In an internal combustion engine, a real fuel quantity (rk_w), supplied from a high-pressure region of a fuel system into a combustion chamber of the engine, depends on a real rotational moment. In addition, the control duration (dwmsvo) of a volume control valve, with which the fuel supplied from a fuel pump into the high-pressure region can be affected, depends on the difference between a real pressure and a determined pressure (prist) in the high-pressure region. The supply output of the fuel pump, which supplies into the high-pressure region, depends in turn on the rotational speed (nmot) of a crankshaft of the engine. In order to avoid problems relating to too much or too little fuel being injected into the combustion chamber of the engine, it is proposed that a real control duration (dwmsvo) of the volume control valve, the determined rotational speed (nmot) of the crankshaft of the engine, and the determined pressure (prist) in the high-pressure region determine a test fuel quantity (rk_um) and that this test fuel quantity is compared with a real fuel quantity (rk_w_determined from the real rotational moment.
摘要翻译：在内燃机中，从燃料系统的高压区域向发动机的燃烧室供给的实际燃料量（rk_w）取决于实际的转矩。另外，可以影响从燃料泵供给到高压区域的燃料的体积控制阀的控制持续时间（dwmsvo）取决于实际压力和确定的压力之间的差（prist）高压区。供给到高压区域的燃料泵的供给输出依次取决于发动机曲轴的转速（nmot）。为了避免与发动机的燃烧室中注入的燃料太多或太少有关的问题，提出了体积控制阀的实际控制持续时间（dwmsvo），所确定的曲轴转速（nmot）并且高压区域中的确定的压力（prist）确定测试燃料量（rk_um），并且将该测试燃料量与实际燃料量（从实际旋转时刻确定的rk_w）进行比较。

97. 发明授权

US06389901B1 Diagnostic method for a fuel supply system 失效
标题翻译：燃油供应系统的诊断方法
公开(公告)号：US06389901B1
公开(公告)日：2002-05-21
申请号：US09671609
申请日：2000-09-28
申请人： Klaus Joos , Jens Wolber , Thomas Frenz , Hansjoerg Bochum , Markus Amler
发明人： Klaus Joos , Jens Wolber , Thomas Frenz , Hansjoerg Bochum , Markus Amler
IPC分类号： G01L700
CPC分类号： F02D41/3854 , F02D41/22 , F02D2041/224 , F02M37/18
摘要： The invention is directed to a method and an arrangement for operating a fuel supply system (10) and especially a fuel supply system of an internal combustion engine of a motor vehicle. Fuel is pumped into an accumulator (19) with the aid of pumps (13, 24) and the fuel is adjusted at least to a first pressure (P1) or a second pressure (P2). Initially, the first pressure (P1) is adjusted and a pressure signal (PS1) is detected and, thereafter, the second pressure (P2) is adjusted and a pressure signal (PS2) is detected. A pressure difference (&Dgr;P) is formed from the detected first and second pressure signals (PS1, PS2). If the pressure difference &Dgr;P deviates from an expected pressure difference (&Dgr;P_E) by more than a threshold value (S), then a fault in the fuel supply system (10) is detected and stored.
摘要翻译：本发明涉及用于操作燃料供应系统（10），特别是机动车辆的内燃机的燃料供应系统的方法和装置。借助于泵（13,24）将燃料泵送到蓄能器（19）中，并将燃料调节至少至第一压力（P1）或第二压力（P2）。首先，调整第一压力（P1）并检测压力信号（PS1），之后调整第二压力（P2），并检测压力信号（PS2）。从检测到的第一和第二压力信号（PS1，PS2）形成压差（DELTAP）。如果压力差DELTAP偏离预期压力差（DELTAP_E）大于阈值（S），则检测并存储燃料供应系统（10）中的故障。

98. 发明授权

US6125832A Engine fuel supply apparatus 有权
标题翻译：发动机燃料供应装置
公开(公告)号：US6125832A
公开(公告)日：2000-10-03
申请号：US220800
申请日：1998-12-28
申请人： Masahiro Toyohara , Takeshi Atago , Toshio Hori
发明人： Masahiro Toyohara , Takeshi Atago , Toshio Hori
IPC分类号： F02M37/00 , F02D11/10 , F02D41/02 , F02D41/22 , F02D41/38 , F02M55/02 , F02M63/00 , F02M37/04 , F02D41/00
CPC分类号： F02D41/3863 , F02D11/105 , F02D41/221 , F02D2011/102 , F02D2041/224 , F02D2041/228 , F02D2041/389 , F02D2200/503 , F02D2250/31 , F02D41/187
摘要： An engine fuel supply apparatus is provided with an accident judging device for effecting accident judgement in a fuel control system under the conditions that the fuel pressure regulator driver is subjected to feedback control of the fuel pressure, and that there is a change in the fuel pressure and the change continues for a predetermined time of period within a set time range.
摘要翻译：发动机燃料供给装置具备事故判定装置，在燃料压力调节器驱动器对燃料压力进行反馈控制的条件下，在燃料控制系统中进行事故判断，燃料压力发生变化并且该变化在设定的时间范围内持续预定的时间段。

99. 发明授权

US6076504A Apparatus for diagnosing failures and fault conditions in a fuel system of an internal combustion engine 失效
公开(公告)号：US6076504A
公开(公告)日：2000-06-20
申请号：US33379
申请日：1998-03-02
申请人： Jonathan A. Stavnheim , Stephen West , Shyamala Raghunathan
发明人： Jonathan A. Stavnheim , Stephen West , Shyamala Raghunathan
IPC分类号： F02M47/00 , F02D41/22 , F02D41/38 , F02D45/00 , F02M55/02 , F02M63/02 , F02M65/00 , F02M7/00
CPC分类号： F02D41/3845 , F02D41/221 , F02M63/0225 , F02M65/00 , F02M65/003 , F02D2041/224 , F02D2041/227 , F02D2200/0602
摘要： A fuel system includes a pair of electronically controllable high pressure fuel pumps operable to supply high pressure fuel from a lower pressure fuel source to a high pressure fuel collection chamber having a pressure sensor associated therewith. The fuel collection chamber feeds an electronically controllable valve operable to dispense the high pressure fuel to a fuel distribution unit supplying fuel to a number of fuel injectors. A control computer is provided for controlling the high pressure fuel pump and valve in response to requested fueling, engine speed and fuel pressure provided by the pressure sensor. The accumulator pressure profile is processed in accordance with various techniques forming part of the present invention for diagnosing pressure sensor in-range failures, fuel pump injector valve blow shut failures and failure of one of the fuel pumps. In accordance with another aspect of the present invention, the current fuel pump command signal is compared with a predicted fuel pump command stored in said computer for diagnosing overpumping conditions. The predicted fuel pump command is preferably retrieved from a look up table as a function of engine speed, commanded fuel, and accumulator pressure.

100. 发明授权

US6032639A Diagnosis for fuel system of internal combustion engine 有权
标题翻译：内燃机燃油系统诊断
公开(公告)号：US6032639A
公开(公告)日：2000-03-07
申请号：US140326
申请日：1998-08-26
申请人： Kenichi Goto , Hideyuki Tamura
发明人： Kenichi Goto , Hideyuki Tamura
IPC分类号： G01M15/04 , F02D41/22 , F02D41/30 , F02D41/38 , F02D45/00 , F02B17/00
CPC分类号： F02D41/3863 , F02D41/222 , F02D41/3076 , F02D41/3818 , F02D2041/223 , F02D2041/224 , F02D2041/389 , F02D2200/0602 , F02D2250/31 , F02D41/187 , F02D41/3029
摘要： A diagnostic system for a fuel system of an internal combustion engine such as direct-injection gasoline engine monitors a pressure deviation of a actual fuel pressure sensed by a fuel pressure sensor from a desired fuel pressure in a feedback fuel pressure control, and thereby detects abnormality in the fuel system. When the pressure deviation continues to be outside a normal range, a diagnostic controller commands engine operation in a homogeneous stoichiometric combustion mode, and monitors a feedback correction quantity in a feedback stoichiometric air fuel control during the engine operation in the homogeneous stoichiometric combustion mode. The controller attributes the abnormality to the fuel pressure sensor if the feedback correction quantity of the air fuel ratio is fixed to an upper limit or a lower limit.
摘要翻译：用于内燃机燃料系统的诊断系统，例如直喷汽油机，在反馈燃料压力控制中监测由燃料压力传感器检测到的实际燃料压力与期望燃料压力的压力偏差，从而检测异常在燃油系统中。当压力偏差继续在正常范围之外时，诊断控制器以均匀化学计量燃烧模式命令发动机运转，并且在均匀化学计量燃烧模式下在发动机运行期间监测反馈化学计量空气燃料控制中的反馈校正量。如果空燃比的反馈校正量固定为上限或下限，则控制器将该异常归因于燃料压力传感器。

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