公开(公告)号：US06968817B2

公开(公告)日：2005-11-29

申请号：US10984804

申请日：2004-11-10

Applicant: Seiji Hirowatari ,  Masanao Idogawa ,  Masahiko Teraoka

Inventor： Seiji Hirowatari ,  Masanao Idogawa ,  Masahiko Teraoka

IPC: F01L1/34 ,  F01L1/344 ,  F01L13/00 ,  F02D13/02

CPC classification number: F02D13/0238 ,  F01L1/3442 ,  F01L2001/34469 ,  F01L2800/01 ,  F02D13/0219 ,  Y02T10/18

Abstract: A controller for a lock mechanism of an engine valve that readily performs unlocking. A VVT changes the rotational phase of a camshaft relative to a pulley in accordance with the difference between the hydraulic pressure of an advance pressure chamber and the hydraulic pressure of a delay pressure chamber to vary the valve timing. The hydraulic pressure difference is set by a variable command value. A lock mechanism engages a lock pin with a lock hole when the rotational phase of the camshaft matches a lock phase. The VVT enters the most easily unlocking hydraulic pressure state when the command value is set at an unlocking command value. An ECU gradually increases the command value from a lower limit value to the unlocking command value and then to the upper limit value to unlock relative rotation of the camshaft.

公开(公告)号：US06904881B2

公开(公告)日：2005-06-14

申请号：US10936685

申请日：2004-09-09

Applicant: Seiji Hirowatari ,  Masanao Idogawa ,  Isao Takagi ,  Hirohisa Kishi

Inventor： Seiji Hirowatari ,  Masanao Idogawa ,  Isao Takagi ,  Hirohisa Kishi

IPC: F01L1/34 ,  F01L1/344 ,  F02D13/02 ,  F02D41/10

CPC classification number: F02D13/0215 ,  F01L1/3442 ,  F01L2001/0537 ,  F01L2001/34453 ,  F01L2800/00 ,  F02D13/0261 ,  F02D41/10 ,  F02D2041/001 ,  Y02T10/18

Abstract: A controller restricts an operation amount of the variable valve actuation mechanism of a fluid pressure operated type such that increase in the valve overlap amount of an engine is restrained when the engine is in a transient operation state in which the output of the engine increases. When the controller determines that the variable valve actuation mechanism is in the locked state, the controller relaxes the restriction imposed on the operation amount of the variable valve actuation mechanism. Hence, a decrease in follow-up performance of valve properties to desired properties is restrained while restraining temporary stagnation of increase in engine rotational speed caused by vehicle acceleration.

Abstract translation: 控制器限制当发动机处于发动机的输出增加的过渡操作状态时，限制发动机的气门重叠量的增加的液压操作型的可变气门致动机构的操作量。 当控制器确定可变气门致动机构处于锁定状态时，控制器松开对可变气门致动机构的操作量的限制。 因此，在抑制由车辆加速引起的发动机转速的增加的暂时停滞的同时，抑制阀特性对期望特性的跟随性能的降低。

公开(公告)号：US20050103296A1

公开(公告)日：2005-05-19

申请号：US10983665

申请日：2004-11-09

Applicant: Seiji Hirowatari ,  Masanao Idogawa ,  Hirohisa Kishi

Inventor： Seiji Hirowatari ,  Masanao Idogawa ,  Hirohisa Kishi

IPC: F01L1/34 ,  F01L1/344 ,  F01L13/00 ,  F02D13/02

CPC classification number: F01L1/3442 ,  F01L1/022 ,  F01L2001/0537 ,  F01L2001/34426 ,  F01L2800/00 ,  F01L2820/041 ,  F01L2820/042 ,  F02D13/0219 ,  Y02T10/18

Abstract: A controller for controlling a valve timing of an engine that calculates a duty correction value using an arithmetic expression reflecting a physical model, which is associated with torque applied to an exhaust valve camshaft, a spring force exerted by an advancing spring for varying a rotational phase of the exhaust valve camshaft, and hydraulic pressure of operating oil. When the coolant temperature is lower than 80° C, the controller sets the duty correction value to zero. The duty correction value reflecting all the fluctuation factors of the engine is easily obtained without using a map requiring a large amount of data.

Abstract translation: 一种用于控制发动机的气门正时的控制器，其使用与施加到排气门凸轮轴的扭矩相关联的反映物理模型的算术表达式计算占空比校正值，由用于改变旋转相位的前进弹簧施加的弹簧力 的排气门凸轮轴和工作油的液压。 当冷却液温度低于80℃时，控制器将占空比校正值设定为零。 不使用需要大量数据的地图即可容易地获得反映发动机的所有波动因子的占空比校正值。

公开(公告)号：US20050098130A1

公开(公告)日：2005-05-12

申请号：US10984804

申请日：2004-11-10

Applicant: Seiji Hirowatari ,  Masanao Idogawa ,  Masahiko Teraoka

Inventor： Seiji Hirowatari ,  Masanao Idogawa ,  Masahiko Teraoka

IPC: F01L1/34 ,  F01L1/344 ,  F01L13/00 ,  F02D13/02

CPC classification number: F02D13/0238 ,  F01L1/3442 ,  F01L2001/34469 ,  F01L2800/01 ,  F02D13/0219 ,  Y02T10/18

Abstract: A controller for a lock mechanism of an engine valve that readily performs unlocking. A VVT changes the rotational phase of a camshaft relative to a pulley in accordance with the difference between the hydraulic pressure of an advance pressure chamber and the hydraulic pressure of a delay pressure chamber to vary the valve timing. The hydraulic pressure difference is set by a variable command value. A lock mechanism engages a lock pin with a lock hole when the rotational phase of the camshaft matches a lock phase. The VVT enters the most easily unlocking hydraulic pressure state when the command value is set at an unlocking command value. An ECU gradually increases the command value from a lower limit value to the unlocking command value and then to the upper limit value to unlock relative rotation of the camshaft.

Abstract translation: 用于发动机阀的锁定机构的控制器，其容易地执行解锁。 VVT根据提前压力室的液压与延迟压力室的液压之间的差异，相对于滑轮改变凸轮轴的旋转相位，以改变气门正时。 液压差由一个可变指令值设定。 当凸轮轴的旋转相位匹配锁定相位时，锁定机构将锁定销与锁定孔接合。 当指令值设定在解锁指令值时，VVT进入最容易解锁的液压状态。 ECU逐渐将指令值从下限值增加到解锁指令值，然后逐渐增加到上限值，以解除凸轮轴的相对旋转。

公开(公告)号：US20050051122A1

公开(公告)日：2005-03-10

申请号：US10936685

申请日：2004-09-09

Applicant: Seiji Hirowatari ,  Masanao Idogawa ,  Isao Takagi ,  Hirohisa Kishi

Inventor： Seiji Hirowatari ,  Masanao Idogawa ,  Isao Takagi ,  Hirohisa Kishi

IPC: F01L1/34 ,  F01L1/344 ,  F02D13/02 ,  F02D41/10 ,  F01L9/04

CPC classification number: F02D13/0215 ,  F01L1/3442 ,  F01L2001/0537 ,  F01L2001/34453 ,  F01L2800/00 ,  F02D13/0261 ,  F02D41/10 ,  F02D2041/001 ,  Y02T10/18

Abstract: A controller restricts an operation amount of the variable valve actuation mechanism of a fluid pressure operated type such that increase in the valve overlap amount of an engine is restrained when the engine is in a transient operation state in which the output of the engine increases. When the controller determines that the variable valve actuation mechanism is in the locked state, the controller relaxes the restriction imposed on the operation amount of the variable valve actuation mechanism. Hence, a decrease in follow-up performance of valve properties to desired properties is restrained while restraining temporary stagnation of increase in engine rotational speed caused by vehicle acceleration.

Abstract translation: 控制器限制当发动机处于发动机的输出增加的过渡操作状态时，限制发动机的气门重叠量的增加的液压操作型的可变气门致动机构的操作量。 当控制器确定可变气门致动机构处于锁定状态时，控制器松开对可变气门致动机构的操作量的限制。 因此，在抑制由车辆加速引起的发动机转速的增加的暂时停滞的同时，抑制阀特性对期望特性的跟随性能的降低。