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公开(公告)号：US5529034A
公开(公告)日：1996-06-25
申请号：US334709
申请日：1994-11-04
申请人： Shigeru Sone , Tadahisa Naganawa , Senji Kato , Kouji Endou , Nobuhisa Ohkawa , Atsushi Gotou
发明人： Shigeru Sone , Tadahisa Naganawa , Senji Kato , Kouji Endou , Nobuhisa Ohkawa , Atsushi Gotou
CPC分类号： F02D13/0261 , F01L1/34406 , F02D13/0215 , F02D41/221 , F01L2001/0537 , F01L2201/00 , F02B1/04 , F02B3/06 , F02D2041/001 , Y02T10/18 , Y02T10/40
摘要： A cam shaft of an engine is provided with a timing change mechanism (VVT) which is driven by hydraulic pressure to alter the timing of a intake valve (valve timing). This VVT is controlled to change the valve overlap of the intake valve and an exhaust valve, thereby adjusting the suction and exhaust in and from a combustion chamber. To control the VVT, an electronic control unit (ECU) computes a target value for the valve timing in accordance with the running condition of the engine and controls the supply of the hydraulic pressure to the VVT based on the target value. The ECU determines the level of the actual hydraulic pressure given to the VVT. When the actual valve timing does not lie in a predetermined range with respect to the target value, the ECU determines that an abnormality has occurred in the VVT, and executes a predetermined fail safe routine. When the hydraulic pressure is equal to or smaller than a reference value, the ECU suppresses WT malfunction determinations.
摘要翻译： 发动机的凸轮轴设置有由液压驱动以改变进气门的正时（气门正时）的定时改变机构（VVT）。 该VVT被控制以改变进气门和排气阀的阀重叠，从而调节来自燃烧室的吸入和排出。 为了控制VVT，电子控制单元（ECU）根据发动机的运行状况计算出阀正时的目标值，并根据目标值控制对VVT的液压供给。 ECU确定给予VVT的实际液压压力水平。 当实际气门正时相对于目标值不在预定范围内时，ECU判定VVT中发生了异常，并执行预定的故障安全程序。 当液压等于或小于参考值时，ECU抑制WT故障确定。
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公开(公告)号：US5715779A
公开(公告)日：1998-02-10
申请号：US759501
申请日：1996-12-04
申请人： Senji Kato , Tadashi Saito , Tadahisa Naganawa , Kouji Endou , Nobuhisa Ohkawa
发明人： Senji Kato , Tadashi Saito , Tadahisa Naganawa , Kouji Endou , Nobuhisa Ohkawa
CPC分类号： F02D13/0215 , F01L1/34406 , F02D13/0234 , F02D13/0238 , F02D13/0261 , F02D41/0002 , F02D41/221 , F01L2001/0537 , F01L2001/34436 , F01L2201/00 , F02B1/04 , F02D2041/001 , Y02T10/18 , Y02T10/42
摘要： In detecting the occurrence of an abnormality in a variable valve timing mechanism, which continuously changes a valve timing by advancing or delaying the displacement angle of an intake-side cam shaft with respect to a crankshaft, an abnormality detecting apparatus for a valve timing control apparatus determines that the variable valve timing mechanism is failing when the absolute value of the difference between a target displacement angle and a correct real displacement angle, obtained by subtracting the maximum delay-angle learning value from the real displacement angle, is greater than a first predetermined value and the absolute value of the difference between a correct real displacement angle and a previous correct real displacement angle is equal to or smaller than a second predetermined value.
摘要翻译： 在通过推进或延迟进气侧凸轮轴相对于曲轴的位移角度连续地改变气门正时的可变气门正时机构中发现异常的情况下，用于气门正时控制装置的异常检测装置 当通过从实际位移角度减去最大延迟角学习值而获得的目标位移角与正确实际位移角之间的差的绝对值大于第一预定值时，确定可变气门正时机构发生故障 值，并且正确的实际位移角与先前的正确实际位移角之间的差的绝对值等于或小于第二预定值。
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公开(公告)号：US5664528A
公开(公告)日：1997-09-09
申请号：US758703
申请日：1996-12-03
CPC分类号： F02D13/0215 , F01L1/34406 , F02D13/0234 , F02D13/0238 , F02D13/0261 , F01L2001/0537 , F01L2201/00 , F02B2275/18 , F02D2013/0292 , F02D2041/001 , Y02T10/18
摘要： A valve timing control apparatus that continuously controls the valve timing of an intake valve or an exhaust valve of an engine. This apparatus includes a hydraulic variable valve timing mechanism, a hydraulic control valve and an electronic control unit for controlling the control valve. The variable valve timing mechanism alters the valve timing to change the valve overlap of the intake valve with respect to the exhaust valve. The hydraulic control valve controls the hydraulic pressure supplied to the variable valve timing mechanism. The real phase of the valve timing is coincided with a target phase that corresponds with the running conditions of the engine. When the real phase of the valve timing approaches the target phase, the hydraulic control valve is controlled to sustain the phase of that instant. The electronic control unit, which learns the control state of the valve-timing sustaining control, sets an initial learning value that reduces the valve overlap when the learning has started. A restricting means for restricting a correction means is included.
摘要翻译： 连续地控制发动机的进气门或排气门的气门正时的气门正时控制装置。 该装置包括液压可变气门正时机构，液压控制阀和用于控制控制阀的电子控制单元。 可变气门正时机构改变气门正时以改变进气门相对于排气门的重叠。 液压控制阀控制提供给可变气门正时机构的液压。 气门正时的实相与与发动机的运行状态相对应的目标相位一致。 当阀门正时相接近目标阶段时，液压控制阀被控制以维持该时刻的相位。 了解阀门定时维持控制的控制状态的电子控制单元设置在学习开始时减小阀重叠的初始学习值。 包括用于限制校正装置的限制装置。
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公开(公告)号：US5628286A
公开(公告)日：1997-05-13
申请号：US622715
申请日：1996-03-26
申请人： Senji Kato , Nobuhisa Ohkawa , Shigeru Sone , Tadahisa Naganawa , Yoshihito Moriya , Yoshiya Yamashita , Hitoshi Uda , Yuji Yoshihara
发明人： Senji Kato , Nobuhisa Ohkawa , Shigeru Sone , Tadahisa Naganawa , Yoshihito Moriya , Yoshiya Yamashita , Hitoshi Uda , Yuji Yoshihara
CPC分类号： F02D13/0215 , F01L1/34406 , F02D13/0261 , F01L2001/0537 , F01L2001/34426 , F01L2201/00 , F02D2041/001 , Y02T10/18
摘要： An improvement of a valve timing control apparatus for an engine is disclosed. The apparatus has an intake valve and an exhaust valve which are alternately opened and closed in a valve timing sequence according to a rotation of a cam shaft. A timing pulley mounted on the cam shaft has a housing accommodating a plunger movable therein and a sleeve secured to the cam shaft. The housing has a first and second pressure chambers defined by the plunger and sealed with respect to each other. The plunger is arranged to move in an axial direction to selectively advance and retard the cam shaft based on differential pressure between the first pressure chamber and the second pressure chamber. A controller controls an electromagnetic valve with a specific control value to adjust the fluid pressure to be supplied to the first and second pressure chambers to maintain the valve timing sequence converged to a target valve timing. The controller corrects the specific value based on a rotational speed of the engine when the plunger is in one of the extreme positions in the chambers, and adjusts the fluid pressures based on the corrected specific value.
摘要翻译： 公开了一种用于发动机的气门正时控制装置的改进。 该装置具有根据凸轮轴的旋转以气门正时顺序交替地打开和关闭的进气门和排气门。 安装在凸轮轴上的正时滑轮具有容纳可移动到其中的柱塞的壳体和固定到凸轮轴的套筒。 壳体具有由柱塞限定并相对于彼此密封的第一和第二压力室。 柱塞布置成沿轴向方向移动以根据第一压力室和第二压力室之间的压差选择性地前进并延迟凸轮轴。 控制器控制具有特定控制值的电磁阀，以调节要供应到第一和第二压力室的流体压力，以保持气门正时序列收敛到目标气门正时。 当柱塞处于室内的极限位置之一时，控制器基于发动机的转速校正特定值，并且基于校正的特定值来调节流体压力。
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公开(公告)号：US5537961A
公开(公告)日：1996-07-23
申请号：US552817
申请日：1995-11-03
申请人： Sone Shigeru , Tadahisa Naganawa , Senji Kato , Kouji Endou , Nobuhisa Ohkawa , Atsushi Gotou
发明人： Sone Shigeru , Tadahisa Naganawa , Senji Kato , Kouji Endou , Nobuhisa Ohkawa , Atsushi Gotou
CPC分类号： F02D13/0261 , F01L1/34406 , F02D13/0215 , F02D41/221 , F01L2001/0537 , F01L2201/00 , F02B1/04 , F02B3/06 , F02D2041/001 , Y02T10/18 , Y02T10/40
摘要： A cam shaft of an engine is provided with a timing change mechanism (VVT) which is driven by hydraulic pressure to alter the timing of a intake valve (valve timing). This VVT is controlled to change the valve overlap of the intake valve and an exhaust valve, thereby adjusting the suction and exhaust in and from a combustion chamber. To control the VVT, an electronic control unit (ECU) computes a target value for the valve timing in accordance with the running condition of the engine and controls the supply of the hydraulic pressure to the VVT based on the target value. The ECU determines the level of the actual hydraulic pressure given to the VVT. When the actual valve timing does not lie in a predetermined range with respect to the target value, the ECU determines that an abnormality has occurred in the VVT, and executes a predetermined fail safe routine. When the hydraulic pressure is equal to or smaller than a reference value, the ECU suppresses VVT malfunction determinations.
摘要翻译： 发动机的凸轮轴设置有由液压驱动以改变进气门的正时（气门正时）的定时改变机构（VVT）。 该VVT被控制以改变进气门和排气阀的阀重叠，从而调节来自燃烧室的吸入和排出。 为了控制VVT，电子控制单元（ECU）根据发动机的运转状况计算出阀正时的目标值，并根据目标值控制对VVT的液压供给。 ECU确定给予VVT的实际液压压力水平。 当实际气门正时相对于目标值不在预定范围内时，ECU判定VVT中发生了异常，并执行预定的故障安全程序。 当液压等于或小于参考值时，ECU抑制VVT故障确定。
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公开(公告)号：US4571683A
公开(公告)日：1986-02-18
申请号：US403042
申请日：1982-07-29
CPC分类号： F02D41/2454 , F02D41/2445 , F02D41/248
摘要： This system computes final fuel injection amount TAU on the basis of the following formula;TAU=A.times.TP+B+JwhereA : a first learning termB : a second learning termTP : basic fuel injection amountJ : correction amountLearning control is effected by correcting the second learning term B during idling periods and by correcting the first learning term A when an engine has larger than a predetermined load.
摘要翻译： 该系统基于以下公式计算最终燃料喷射量TAU： TAU = AxTP + B + J其中A：第一学习项B：第二学习项TP：基本燃料喷射量J：校正量学习控制通过在空转期间校正第二学习项B并通过校正第一学习 当发动机大于预定负载时，A项。
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公开(公告)号：US5678515A
公开(公告)日：1997-10-21
申请号：US758702
申请日：1996-12-03
CPC分类号： F02D13/0215 , F01L1/34406 , F02D13/0234 , F02D13/0238 , F02D13/0261 , F01L2001/0537 , F01L2201/00 , F02B2275/18 , F02D2013/0292 , F02D2041/001 , Y02T10/18
摘要： A valve timing control apparatus that continuously controls the valve timing of an intake valve or an exhaust valve of an engine. This apparatus includes a hydraulic variable valve timing mechanism, a hydraulic control valve and an electronic control unit for controlling the control valve. The variable valve timing mechanism alters the valve timing to change the valve overlap of the intake valve with respect to the exhaust valve. The hydraulic control valve controls the hydraulic pressure supplied to the variable valve timing mechanism. The real phase of the valve timing is coincided with a target phase that corresponds with the running conditions of the engine. When the real phase of the valve timing approaches the target phase, the hydraulic control valve is controlled to sustain the phase of that instant. The electronic control unit, which learns the control state of the valve-timing sustaining control, sets an initial learning value that reduces the valve overlap when the learning has started. A correction means is disallowed from computing a current specific value when the computed target value is within a predetermined range.
摘要翻译： 连续地控制发动机的进气门或排气门的气门正时的气门正时控制装置。 该装置包括液压可变气门正时机构，液压控制阀和用于控制控制阀的电子控制单元。 可变气门正时机构改变气门正时以改变进气门相对于排气门的重叠。 液压控制阀控制提供给可变气门正时机构的液压。 气门正时的实相与与发动机的运行状态相对应的目标相位一致。 当阀门正时相接近目标阶段时，液压控制阀被控制以维持该时刻的相位。 了解阀门定时维持控制的控制状态的电子控制单元设置在学习开始时减小阀重叠的初始学习值。 当所计算的目标值在预定范围内时，不允许校正装置计算当前特定值。
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公开(公告)号：US5626109A
公开(公告)日：1997-05-06
申请号：US625267
申请日：1996-03-29
申请人： Atsushi Yasumura , Senji Kato , Nobuhisa Ohkawa
发明人： Atsushi Yasumura , Senji Kato , Nobuhisa Ohkawa
CPC分类号： F02D13/0215 , F01L1/34 , F01L1/34406 , F02D13/0238 , F02D13/0261 , F02D13/0265 , F02D41/006 , F01L2001/0537 , F01L2201/00 , F02B1/04 , F02D2013/0292 , F02D2041/001 , Y02T10/18 , Y02T10/47
摘要： A valve timing control apparatus that adjusts valve overlap by altering valve timing according to the running condition of the engine. A variable valve timing mechanism (VVT) alters the valve timing of intake valves to adjust the valve overlap. An electronic control unit (ECU) controls the VVT with respect to a target value calculated in accordance to the running condition of the engine to obtain the optimum valve overlap. The ECU controls the VVT to eliminate valve overlap under low temperature conditions. The ECU controls the VVT to switch from a state of nonexistent valve overlap to a valve overlap state as the temperature changes from a low temperature to a higher temperature. The ECU judges whether the engine is in a low temperature condition based on a predetermined reference value to suppress the difference in the amount of fuel (port wet amount) adhered to the intake port before and after the shifting of the state the valve overlap.
摘要翻译： 一种气门正时控制装置，其通过根据发动机的运行状态改变气门正时来调节阀重叠。 可变气门正时机构（VVT）改变进气门的气门正时，调整气门重叠。 电子控制单元（ECU）相对于根据发动机的运行状态计算的目标值来控制VVT，以获得最佳的阀重叠。 ECU控制VVT以在低温条件下消除阀重叠。 随着温度从低温变化到更高的温度，ECU控制VVT从不重要的阀重叠状态切换到阀重叠状态。 ECU基于预定的基准值来判断发动机是否处于低温状态，以抑制在阀重叠的状态的移动之前和之后附着到进气口的燃料量（端口湿度）的差异。
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9.发明授权
公开(公告)号：US5590632A
公开(公告)日：1997-01-07
申请号：US391180
申请日：1995-02-21
申请人： Senji Kato , Kouji Endo , Shigeru Sone , Atsushi Goto , Nobuhisa Ohkawa
发明人： Senji Kato , Kouji Endo , Shigeru Sone , Atsushi Goto , Nobuhisa Ohkawa
IPC分类号： F01L1/34 , F01L1/344 , F02B75/02 , F02D13/02 , F02D41/00 , F02D41/18 , F02D41/32 , F02D45/00 , G01F1/34 , G01F9/00 , F02D41/34
CPC分类号： F02D13/0215 , F01L1/34 , F01L1/34406 , F02D13/0238 , F02D13/0261 , F02D41/0002 , F02D41/0062 , F02D41/18 , F02D41/32 , G01F1/34 , G01F9/00 , F01L2001/0537 , F01L2201/00 , F02B2075/027 , F02D2041/001 , Y02T10/18 , Y02T10/42 , Y02T10/47
摘要： Disclosed is a device for calculating an amount of an air introduced to a cylinder of an engine. An air-intake passage introduces the air to the cylinder. An air-exhaust passage exhausts gas from the cylinder. Both passages respectively have an intake valve and an exhaust valve. Both valves are respectively driven by an intake valve drive mechanism and an exhaust valve drive mechanism in accordance with a rotation of a crank shaft to alternatively and selectively open and close, and simultaneously open during a valve overlap period to open the passages to the cylinder. A variable valve timing mechanism controls an operational timing of the valve drive mechanisms with respect to the crank shaft in accordance with a running condition of the engine to vary a timing of the valve driven by the valve drive mechanisms. The calculating device comprises a first detecting device, which detects a rotational speed of the crank shaft. A second detecting device detects an intake pressure in the air-intake passage. A third detecting device detects the operational timing of the valve drive mechanisms. A calculating device calculates a displacement of the operational timing according to the detected rotational speed of the crank shaft and the detected operational timing. A first computing device computes the amount of the air introduced to the cylinder in response to the rotational speed of the crank shaft, the intake pressure, and the displacement of the operational timing.
摘要翻译： 公开了一种用于计算引入发动机气缸的空气量的装置。 进气通道将空气引入气缸。 排气通道从气缸排出气体。 两个通道分别具有进气阀和排气阀。 两个阀分别由进气门驱动机构和排气门驱动机构驱动，根据曲轴的旋转来选择性地打开和关闭，并且在阀重叠期间同时打开以将通道打开到气缸。 可变气门正时机构根据发动机的运行状态来控制阀驱动机构相对于曲轴的运转定时，以改变由阀驱动机构驱动的阀的正时。 计算装置包括检测曲柄轴的转速的第一检测装置。 第二检测装置检测进气通道中的进气压力。 第三检测装置检测阀驱动机构的操作定时。 计算装置根据检测到的曲柄轴的转速和检测到的操作定时来计算运转定时的位移。 第一计算装置根据曲柄轴的旋转速度，进气压力和操作时间的位移来计算引入气缸的空气量。
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公开(公告)号：US5626108A
公开(公告)日：1997-05-06
申请号：US605571
申请日：1996-02-22
申请人： Senji Kato , Tadashi Saito , Tadahisa Naganawa , Kouji Endou , Nobuhisa Ohkawa
发明人： Senji Kato , Tadashi Saito , Tadahisa Naganawa , Kouji Endou , Nobuhisa Ohkawa
CPC分类号： F02D13/0215 , F01L1/34406 , F02D13/0234 , F02D13/0238 , F02D13/0261 , F02D41/0002 , F02D41/221 , F01L2001/0537 , F01L2001/34436 , F01L2201/00 , F02B1/04 , F02D2041/001 , Y02T10/18 , Y02T10/42
摘要： In detecting the occurrence of an abnormality in a variable valve timing mechanism, which continuously changes a valve timing by advancing or delaying the displacement angle of an intake-side cam shaft with respect to a crankshaft, an abnormality detecting apparatus for a valve timing control apparatus determines that the variable valve timing mechanism is failing when the absolute value of the difference between a target displacement angle and a correct real displacement angle, obtained by subtracting the maximum delay-angle learning value from the real displacement angle, is greater than a first predetermined value and the absolute value of the difference between a correct real displacement angle and a previous correct real displacement angle is equal to or smaller than a second predetermined value.
摘要翻译： 在通过推进或延迟进气侧凸轮轴相对于曲轴的位移角度连续地改变气门正时的可变气门正时机构中发现异常的情况下，用于气门正时控制装置的异常检测装置 当通过从实际位移角度减去最大延迟角学习值而获得的目标位移角与正确实际位移角之间的差的绝对值大于第一预定值时，确定可变气门正时机构发生故障 值，并且正确的实际位移角与先前的正确实际位移角之间的差的绝对值等于或小于第二预定值。
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