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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：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：US5494008A
公开(公告)日：1996-02-27
申请号：US301212
申请日：1994-09-06
申请人： Nobuhisa Ohkawa , Tadahisa Naganawa , Kouji Endou , Senji Kato , Shigeru Sone , Atsushi Goto
发明人： Nobuhisa Ohkawa , Tadahisa Naganawa , Kouji Endou , Senji Kato , Shigeru Sone , Atsushi Goto
CPC分类号： F02D13/0215 , F01L1/34406 , F02D13/0238 , F02D13/0261 , F01L2001/0537 , F01L2201/00 , F02B1/04 , F02D2041/001 , Y02T10/18
摘要： A varying mechanism (VVT) for continuously varying the valve timing of an intake valve in a predetermined range is provided on a cam shaft in an engine. By controlling the VVT, the valve overlap period of the intake valve and an exhaust valve is continuously varied in a predetermined range, thus adjusting the amount of the internal EGR in combustion chambers. When determining that the operational load of the engine is small and intermediate based on the value of a manifold pressure, an electronic control unit (ECU) computes a target value for advancing the valve timing with respect to the rotational phase of a crankshaft based on a throttle angle, an engine speed, etc. The ECU also computes a limit value to restrict the target value in accordance with the value of the manifold pressure. When the target value is smaller than the limit value, the ECU controls the VVT based on the target value. When the target value is greater than the limit value, the ECU replaces the limit value with target value and controls the VVT based on this target value.
摘要翻译： 在发动机的凸轮轴上设置用于将进气门的气门正时连续变化到预定范围内的变化机构（VVT）。 通过控制VVT，进气门和排气阀的阀重叠周期在预定范围内连续变化，从而调节燃烧室内部EGR的量。 电子控制单元（ECU）基于歧管压力的值确定发动机的运转负荷小且中间时，计算用于相对于曲轴的旋转相位推进气门正时的目标值，基于 节气门角度，发动机转速等.ECC还计算限制值，以根据歧管压力的值来限制目标值。 当目标值小于极限值时，ECU根据目标值控制VVT。 当目标值大于极限值时，ECU用目标值替换极限值，并根据该目标值控制VVT。
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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：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：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：US5664529A
公开(公告)日：1997-09-09
申请号：US758704
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. An initializing means is added for initializing a current specific value when a recondition after a malfunction is determined.
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。 当确定故障之后的修复时，添加初始化装置来初始化当前特定值。
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公开(公告)号：US5623896A
公开(公告)日：1997-04-29
申请号：US630640
申请日：1996-04-11
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.
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。
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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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