公开(公告)号：US5519992A

公开(公告)日：1996-05-28

申请号：US212740

申请日：1994-03-14

申请人： Yasuhiko Hosoya ,  Hirofumi Ohuchi ,  Tatsuhiko Takahashi

发明人： Yasuhiko Hosoya ,  Hirofumi Ohuchi ,  Tatsuhiko Takahashi

IPC分类号： F01N3/22 ,  F01N3/30 ,  F01N3/32 ,  F01N9/00 ,  F01N11/00 ,  F01N13/02 ,  F02D35/00 ,  F02D41/22 ,  F01N3/20

CPC分类号： F01N3/222 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0097 ,  F01N3/22 ,  F01N3/306 ,  F01N3/32 ,  F01N9/00 ,  F02D35/0038 ,  F02D41/221 ,  F01N2550/14 ,  Y02T10/20 ,  Y02T10/40 ,  Y02T10/47

摘要： In an exhaust gas purification system for an internal combustion engine including a catalytic converter disposed in an exhaust pipe, an apparatus for controlling an amount and temperature of fresh air fed into the exhaust pipe so that optimal purification efficiency of the catalytic converter can realized. The apparatus includes an air pump for taking in fresh air, a control valve for controlling air flow, a heater for heating the air and the controller for controlling the pump, the valve and the hater in dependence on engine operation states so that nitrogen oxides, carbon monoxide and hydrocarbon contained in the exhaust gas can be removed to a maximum through reduction and oxidation reactions. An abnormality detecting device detects occurrence of abnormality in the air feeding control apparatus for ensuring fail-safe operation thereof.

摘要翻译： 在具有设置在排气管内的催化转化器的内燃机的排气净化系统中，能够实现供给到排气管的新鲜空气的量和温度的控制装置，从而能够实现催化转化器的最佳净化效率。 该装置包括用于吸入新鲜空气的空气泵，用于控制空气流量的控制阀，用于加热空气的加热器和用于根据发动机操作状态控制泵，阀和加热器的控制器，使得氮氧化物， 排气中所含的一氧化碳和烃可以通过还原和氧化反应去除最大程度。 异常检测装置检测供气控制装置中的异常发生，以确保其故障安全操作。

公开(公告)号：US5469831A

公开(公告)日：1995-11-28

申请号：US339194

申请日：1994-11-10

申请人： Tatsuhiko Takahashi

发明人： Tatsuhiko Takahashi

IPC分类号： F02D19/08 ,  F02D35/00 ,  F02D41/00 ,  F02D41/14 ,  F02D41/24 ,  F02D45/00 ,  G01N27/409 ,  F02D41/16

CPC分类号： F02D41/249 ,  F02D19/061 ,  F02D19/0649 ,  F02D19/088 ,  F02D35/00 ,  F02D41/0025 ,  F02D2200/0612 ,  Y02T10/36

摘要： A fuel supply control system for an automotive engine determines a property of the fuel, such as the fifty percent distillation temperature T.sub.50 thereof, and the fuel injectors of the engine are controlled in accordance with the determined fuel property. When the engine is idling and the coolant water temperature WT of the engine is decreasing, the amplitude X of the feedback correction factor K.sub.2 for proportional-plus-integral control action is measured a number of times, and an average amplitude X.sub.0 thereof is calculated. The property of said fuel is determined on the basis of the thus calculated average amplitude X.sub.0 and the coolant water temperature WT using a two-dimensional map which gives the value of T.sub.50 as a function of the amplitude X of the feedback correction factor K.sub.2 and the coolant water temperature WT. The thus determined index T.sub.50 is stored in a RAM backed up by a battery. When a new fuel is supplied to the fuel tank, the value of index T.sub.50 is cleared to determine the index afresh.

摘要翻译： 用于汽车发动机的燃料供应控制系统确定燃料的性质，例如其百分之五十的蒸馏温度T50，并且根据确定的燃料性质来控制发动机的燃料喷射器。 当发动机怠速并且发动机的冷却水温度WT降低时，对于比例积分控制动作的反馈校正系数K2的振幅X进行多次测量，并且计算其平均振幅X 0。 基于这样计算的平均振幅X 0和冷却水温度WT，使用给出作为反馈校正系数K2的振幅X的函数T50的二维图来确定所述燃料的性质， 冷却水温度WT。 由此确定的索引T50存储在由电池备份的RAM中。 当向燃料箱供给新的燃料时，清除指标值T50以重新确定指标。

公开(公告)号：US07484497B2

公开(公告)日：2009-02-03

申请号：US11966199

申请日：2007-12-28

申请人： Shinji Watanabe ,  Toru Tanaka ,  Tatsuhiko Takahashi

发明人： Shinji Watanabe ,  Toru Tanaka ,  Tatsuhiko Takahashi

IPC分类号： F02D13/00 ,  F01L9/02

CPC分类号： F02D41/1482 ,  F01L1/34 ,  F01L1/3442 ,  F01L2001/34426 ,  F01L2800/00 ,  F02D13/0215 ,  F02D35/025 ,  F02D41/009 ,  F02D41/064 ,  F02D2041/001

摘要： Provided is a control device for an internal combustion engine, including a crank angle sensor, a cam angle sensor, a real phase angle detector for detecting a real phase angle of a cam shaft based on a detection signal of the sensors, a target phase angle setting unit including a temperature parameter and battery voltage, for setting a target phase angle of the cam shaft based on an operating state of the internal combustion engine, and a phase angle feedback control unit for conducting feedback control operation so that the real phase angle coincides with the target phase angle, and for calculating an operation quantity to a hydraulically controlled solenoid valve, in which the feedback control unit sets an integral term initial value when starting the feedback control operation according to the temperature parameter, corrects a control correction quantity by the battery voltage, and outputs the operation quantity to the solenoid valve.

摘要翻译： 提供一种用于内燃机的控制装置，包括曲柄角传感器，凸轮角度传感器，用于基于传感器的检测信号来检测凸轮轴的实际相位角的实际相位角检测器，目标相位角 设置单元，其包括温度参数和电池电压，用于基于内燃机的运行状态来设定凸轮轴的目标相位角;以及相位角反馈控制单元，用于进行反馈控制操作，使得实际相位角一致 与目标相位角相对应，并且用于计算到液压控制电磁阀的操作量，其中当根据温度参数启动反馈控制操作时，反馈控制单元设置积分项初始值，由控制校正量校正控制校正量 电池电压，并将操作量输出到电磁阀。

公开(公告)号：US20070089720A1

公开(公告)日：2007-04-26

申请号：US11373312

申请日：2006-03-13

申请人： Tatsuhiko Takahashi

发明人： Tatsuhiko Takahashi

IPC分类号： F02D41/14 ,  G06F17/00

CPC分类号： F02D41/064 ,  F02D41/1454 ,  F02D41/1475 ,  F02D2200/0406

摘要： To prevent RPM decrease, misfire, and engine stall by refraining from correcting, the amount of fuel to shift an air-fuel ratio toward a lean side to the extent of exceeding a combustion limit when the internal combustion engine operates at a low load, a control apparatus is provided for controlling operation of an internal combustion engine. The apparatus includes: air-fuel ratio state determining means; characteristic retaining means; and fuel correction amount calculating means, in which a coolant temperature coefficient of a coolant temperature coefficient characteristic is set to be smaller than a constant value in a region where a coolant temperature is lower than a constant temperature.

摘要翻译： 为了防止在内燃机在低负载下运转时通过不进行校正来减小，减少发动机失速和发动机失速，使空燃比朝向倾斜侧变化到超过燃烧极限的程度， 控制装置用于控制内燃机的运转。 该装置包括：空燃比状态确定装置; 特征保留装置; 以及燃料校正量计算装置，其中冷却剂温度系数特性的冷却剂温度系数在冷却剂温度低于恒定温度的区域中被设定为小于恒定值。

公开(公告)号：US06802286B2

公开(公告)日：2004-10-12

申请号：US10421871

申请日：2003-04-24

申请人： Morio Fujiwara ,  Tatsuhiko Takahashi ,  Koji Wada

发明人： Morio Fujiwara ,  Tatsuhiko Takahashi ,  Koji Wada

IPC分类号： F01L134

CPC分类号： F01L1/34 ,  F01L1/3442 ,  F01L2001/34469 ,  F02D2041/001 ,  F02D2200/023

摘要： The valve timing control system of the present invention comprises an actuator for changing an actual valve timing of an intake valve or an exhaust valve; an oil pressure adjusting unit for supplying operating oil to the actuator, and adjusting the oil pressure thereof; an actual valve timing control unit for controlling the actuator by controlling the oil pressure adjusting unit, so that the actual valve timing follows up a target value; and an oil temperature estimation unit for estimating the temperature of the operating oil, according to an operating state of the internal combustion engine from a previous operation, and according to its current operating state. Based on the estimated oil temperature, the actual valve timing control unit switches a control amount for controlling the oil pressure adjusting unit.

摘要翻译： 本发明的气门正时控制系统包括用于改变进气门或排气门的实际气门正时的致动器; 油压调节单元，用于向致动器供给工作油，并调节其油压; 实际气门正时控制单元，用于通过控制油压调节单元来控制致动器，使得实际气门正时跟随目标值; 以及油温估计单元，用于根据前一操作的内燃机的运转状态，根据其当前的运行状态来推定运转油的温度。 基于估计的油温，实际气门正时控制单元切换用于控制油压调节单元的控制量。

公开(公告)号：US06776033B2

公开(公告)日：2004-08-17

申请号：US10307939

申请日：2002-12-03

申请人： Yasuyoshi Hori ,  Shiro Yonezawa ,  Akira Furuta ,  Hideki Hagari ,  Tatsuhiko Takahashi

发明人： Yasuyoshi Hori ,  Shiro Yonezawa ,  Akira Furuta ,  Hideki Hagari ,  Tatsuhiko Takahashi

IPC分类号： G01M1500

CPC分类号： G01M15/06

摘要： A cylinder identifying apparatus has a generator which generates a cylinder discrimination signal, a generator which generates a crank angle position signal, and a control unit which obtains the number of detections of the crank angle position signal, the number of detections of the cylinder discrimination signal, the number of detections of the crank angle position signal at the time of detection of the cylinder discrimination signal, etc. The control unit sets a cylinder discrimination period B35° to B75° CA if the present reference crank position is a first-time detection result after startup, sets a cylinder discrimination period B75° to B75° CA if the present reference crank position is a second-time or some other subsequent detection result, obtains the number of detections of the cylinder discrimination signal, and identifies a cylinder on the basis of the number of pulse dropouts and the number of detections of the cylinder discrimination signal.

摘要翻译： 气缸识别装置具有产生气缸判别信号的发电机，产生曲柄角位置信号的发电机，以及获取曲柄角位置信号的检测次数，气缸识别信号的检测次数的控制单元 ，检测气缸识别信号时的曲柄角位置信号的检测次数等。如果本参考曲柄位置是第一次检测，则控制单元将气缸鉴别周期B35°设定为B75°CA 启动后的结果，如果本参考曲柄位置是第二次或其他后续检测结果，则将气缸鉴别周期B75°设置为B75°CA，获得气缸鉴别信号的检测次数，并且识别 脉冲丢失次数的基数和气缸判别信号的检测次数。

公开(公告)号：US06761139B2

公开(公告)日：2004-07-13

申请号：US10425937

申请日：2003-04-30

申请人： Tatsuhiko Takahashi ,  Shiro Yonezawa ,  Yasuyoshi Hori ,  Hideki Hagari ,  Akira Furuta

发明人： Tatsuhiko Takahashi ,  Shiro Yonezawa ,  Yasuyoshi Hori ,  Hideki Hagari ,  Akira Furuta

IPC分类号： F01L134

CPC分类号： F02D13/0215 ,  F01L1/34 ,  F01L2800/00 ,  F01L2820/041 ,  F02D41/009 ,  F02D41/222 ,  F02D2041/001 ,  Y02T10/18

摘要： An actuator for changing a relative position of at least an intake or exhaust camshaft, and a crank shaft; a cylinder identifying unit for performing cylinder identification in accordance with results detected by a crank angle sensor and a cam angle sensor; a valve timing detecting unit for detecting valve timing in accordance with the results detected by the crank angle sensor and the cam angle sensor; and an OCV for controlling the actuator based on a value detected by the valve timing detecting unit are provided. Control is performed at a neutral point by a valve timing controlling unit when the cylinder identification by the cylinder identifying unit is in an indefinite state.

摘要翻译： 用于改变至少一个进气或排气凸轮轴和曲轴的相对位置的致动器; 用于根据由曲轴转角传感器和凸轮角度传感器检测到的结果执行气缸识别的气缸识别单元; 气门正时检测单元，用于根据由曲柄角传感器和凸轮角度传感器检测到的结果来检测气门正时; 并且提供用于基于由气门正时检测单元检测到的值来控制致动器的OCV。 当气缸识别单元的气缸识别处于不确定状态时，通过气门正时控制单元在中性点进行控制。

公开(公告)号：US06561147B2

公开(公告)日：2003-05-13

申请号：US09983285

申请日：2001-10-23

申请人： Tatsuhiko Takahashi ,  Morio Fujiwara

发明人： Tatsuhiko Takahashi ,  Morio Fujiwara

IPC分类号： F01L0134

CPC分类号： F01L1/3442 ,  F01L2001/0537 ,  F01L2001/34426 ,  F01L2001/34473 ,  F01L2800/00 ,  F01L2820/01

摘要： A valve timing control system for an internal combustion engine for preventing hitching of a lock pin of an actuator at the time of changing a cam angle is provided. The valve timing control system is provided with actuators 15 and 16 connected to cam shafts 15C and 16C, hydraulic pressure supply units 19 and 20 for driving the actuators, and a controller 21A for controlling a hydraulic pressure for the actuators in dependence on engine operation states while changing a relative phase of the cam shafts relative to crank shafts. The actuator includes a locking mechanism for setting the relative phase to a lock-up position, and an unlocking mechanism for releasing the locking mechanism in response to a predetermined hydraulic pressure. The controller executes a releasing operation of the locking mechanism if the lock-up position in the locking mechanism changes from inside a predetermined range to outside the predetermined range.

公开(公告)号：US06520131B2

公开(公告)日：2003-02-18

申请号：US09912361

申请日：2001-07-26

申请人： Tatsuhiko Takahashi ,  Morio Fujiwara ,  Koji Wada

发明人： Tatsuhiko Takahashi ,  Morio Fujiwara ,  Koji Wada

IPC分类号： F01L134

CPC分类号： F02D13/0219 ,  F01L1/34 ,  F01L1/3442 ,  F01L2001/34426 ,  F01L2800/00 ,  Y02T10/18

摘要： A valve timing control system for accelerating activation of a catalytic converter in an internal combustion engine in a cold starting operation mode while enhancing control accuracy by learning a reference position of a cam angle. The system includes actuators (15; 16) coupled to cam shafts (15C; 16C), respectively, hydraulic pressure supply means (19; 20) for driving the actuators (15; 16), and a controller (21A) for controlling hydraulic pressure fed to the actuators (15; 16) in dependence on engine operation states to change phases of the cam shafts (15C; 16C) relative to a crank shaft (13C). The controller (21A) is so designed as to set a valve timing to a most advanced position or alternatively to a most retarded position in a cold-state idling operation mode for the purpose of learning a reference position.

公开(公告)号：US06513468B2

公开(公告)日：2003-02-04

申请号：US09982932

申请日：2001-10-22

申请人： Tatsuhiko Takahashi ,  Morio Fujiwara

发明人： Tatsuhiko Takahashi ,  Morio Fujiwara

IPC分类号： F01L134

CPC分类号： F01L1/3442 ,  F01L1/34 ,  F01L2001/34426 ,  F01L2820/02 ,  Y10T74/2101

摘要： A valve timing control system for an internal combustion engine for preventing dispersion of a control amount and unexpected unlocking of a lock pin is provided. The valve timing control system is provided with actuators 15 and 16 connected to cam shafts 15C and 16C, hydraulic pressure supply units 19 and 20 for driving the actuators, and a controller 21A for controlling a hydraulic pressure for the actuators depending on operating states while changing a relative phase of the cam shafts relative to crank shafts. The actuator includes a locking mechanism for setting the relative phase to a lock-up position and unlocking mechanisms for unlocking the locking mechanism in response to a predetermined hydraulic pressure, and the controller restricts a control of valve timing within a predetermined range of said lock-up position in the locking mechanism.

摘要翻译： 提供了一种用于防止控制量的分散和锁定销意外解锁的用于内燃机的气门正时控制系统。 气门正时控制系统设有连接到凸轮轴15C和16C的​​致动器15和16，用于驱动致动器的液压供应单元19和20，以及用于根据操作状态控制致动器的液压的控制器21A，同时改变 凸轮轴相对于曲轴的相对相位。 致动器包括用于将相对相位设定到锁定位置的锁定机构和用于响应于预定液压压力解锁锁定机构的解锁机构，并且所述控制器限制在所述锁定位置的预定范围内的气门正时的控制， 在锁定机构中的上升位置。