公开(公告)号：US20140034029A1

公开(公告)日：2014-02-06

申请号：US13948689

申请日：2013-07-23

Applicant: DENSO CORPORATION

Inventor： Kazushi SASAKI ,  Ryo SANO ,  Satoshi ISHIGAKI ,  Hiroki SHIMADA

IPC: F02M25/07 ,  F16K31/04

CPC classification number: F02M26/54 ,  F16K31/042 ,  F16K31/047 ,  F16K31/52408 ,  F16K37/0083

Abstract: A valve apparatus performs at least one of a first operation in which an electric motor is energized in a valve-close direction and a rotation shaft is rotated until its rotation is stopped and a second operation in which the electric motor is deenergized and a valve is fully closed by a biasing force of a return spring. Thereby, a rotation angle of the rotation shaft becomes a rotation-stop angle or the rotation angle becomes in the backlash range, so that a biasing force of the return spring is not transmitted to the rotation shaft. Then, the electric motor generates a specified torque, which is less than a valve-opening torque by which the valve starts opening. Thereby, a rotation angle of the rotation shaft can be stopped at a full-close angle. The full-close angle can be made correspond to an output of a rotational angle sensor.

Abstract translation: 阀装置执行以下操作中的至少一个：电动机在关闭方向上通电并且旋转轴旋转直到其旋转停止的第一操作和电动机断电的第二操作和阀是 由复位弹簧的偏置力完全关闭。 由此，旋转轴的旋转角度成为止转角，或旋转角度成为间隙范围，使得复位弹簧的作用力不会传递给旋转轴。 然后，电动机产生规定的转矩，该转矩小于开阀开阀的开阀力矩。 由此，旋转轴的旋转角度能够以全角度停止。 全关角度可以对应于旋转角度传感器的输出。

公开(公告)号：US20130333648A1

公开(公告)日：2013-12-19

申请号：US13914998

申请日：2013-06-11

Applicant: DENSO CORPORATION

Inventor： Kazushi SASAKI ,  Hiroki SHIMADA ,  Ryo SANO

IPC: F02D13/02

CPC classification number: F02D13/0242 ,  F02D41/0072 ,  F02D41/0077 ,  F02M26/54 ,  F02M26/66

Abstract: A cam full close stopper defines a cam full close position that is a limit position of a rotatable range of a cam. A sensor element outputs a signal corresponding to a rotation angle of the cam. A signal processor changes the signal output from the sensor element into a sensor output. A storage part memorizes a data table representing a correspondence relationship between the rotation angle of the cam and the sensor output of the signal processor in a predetermined form, characteristics of the sensor output being adjustable at a plurality of points with respect to the rotation angle of the cam. The storage part memorizes the sensor output of the signal processor when the cam is fully closed at the cam full close position.

Abstract translation: 凸轮完全关闭止动器限定凸轮完全关闭位置，其是凸轮的可旋转范围的极限位置。 传感器元件输出与凸轮的旋转角相对应的信号。 信号处理器将从传感器元件输出的信号改变为传感器输出。 存储部件以预定形式存储表示凸轮的旋转角度和信号处理器的传感器输出之间的对应关系的数据表，该传感器输出的特性可在多个点处相对于旋转角度 凸轮。 当凸轮完全关闭时，存储部分存储信号处理器的传感器输出。

公开(公告)号：US20170321612A1

公开(公告)日：2017-11-09

申请号：US15523816

申请日：2015-11-16

Applicant: DENSO CORPORATION

Inventor： Yuuta FUJINAKA ,  Takashi KOBAYASHI ,  Kazushi SASAKI

IPC: F02D9/02 ,  F16K1/22 ,  F02M35/10 ,  F02D41/14 ,  F16K31/04 ,  F02D9/04

CPC classification number: F02D9/02 ,  F02D9/04 ,  F02D11/10 ,  F02D41/1493 ,  F02D2009/0213 ,  F02D2011/103 ,  F02D2011/108 ,  F02M35/10393 ,  F16K1/22 ,  F16K31/041

Abstract: An electrically-operated actuator rotates a valve toward its closing side or opening side. A valve urging part urges the valve from a fully-closed position toward the opening side. An ACT control part controls the electrically-operated actuator to drive. A set load of the valve urging part is smaller than a set load that is capable of returning the valve from a fully-closed position to an intermediate position only by urging force of the valve urging part. When a position of the valve at time of turning off an IG switch for stopping operation of an internal-combustion engine is on the closing side of the intermediate position, the ACT control part shifts the valve to the intermediate position by the electrically-operated actuator after the IG switch is turned off.

公开(公告)号：US20200072141A1

公开(公告)日：2020-03-05

申请号：US16542481

申请日：2019-08-16

Applicant: DENSO CORPORATION

Inventor： Kazushi SASAKI

IPC: F02D41/00 ,  F02D41/06 ,  F02D41/38 ,  F02N11/08 ,  F02M26/53

Abstract: In a control system for an internal combustion engine, a control unit controls a throttle valve provided in an intake pipe and/or an on-off valve provided in an exhaust gas recirculation pipe when an ignition switch is turned on, in such a manner that an opening degree of the throttle valve and/or an opening degree of the on-off valve is made to be larger than that of a condition before the ignition switch is turned on. In the above Ig-on control, in which the throttle valve and/or the on-off valve is largely opened, a piston is reciprocated in order that gas in a combustion chamber is discharged to an outside of the combustion chamber.

公开(公告)号：US20150330335A1

公开(公告)日：2015-11-19

申请号：US14676033

申请日：2015-04-01

Applicant: DENSO CORPORATION

Inventor： Hiroki SHIMADA ,  Kazushi SASAKI ,  Satoshi ISHIGAKI

IPC: F02M25/07 ,  F02D41/22 ,  F02D41/00

CPC classification number: F02M26/54 ,  F02D41/0077 ,  F02D41/22 ,  F02D41/221 ,  F02D2011/108 ,  F02M26/48 ,  F02M26/67 ,  Y02T10/47

Abstract: In an exhaust device for an internal combustion engine, a control device controls a motor based on an output signal of a sensor. The control device has a first valve position detector detecting a first valve position when a valve unit is biased to close using only a biasing force of a spring. The control device has a second valve position detector detecting a second valve position when the valve unit is biased to close using a driving force of the motor that is larger than the biasing force of the spring. The control device detects a foreign object between a valve object and a valve seat and detects a size of the foreign object based on a comparison result between the first valve position and the second valve position.

Abstract translation: 在内燃机的排气装置中，控制装置根据传感器的输出信号来控制电动机。 控制装置具有第一阀位置检测器，当阀单元仅使用弹簧的偏置力而被偏压关闭时，检测第一阀位置。 控制装置具有检测第二阀位置的第二阀位置检测器，当使用马达的驱动力将阀单元偏置关闭时，该单元的驱动力大于弹簧的偏置力。 控制装置基于第一阀位置和第二阀位置之间的比较结果来检测阀对象和阀座之间的异物，并检测异物的尺寸。

公开(公告)号：US20150007801A1

公开(公告)日：2015-01-08

申请号：US14321111

申请日：2014-07-01

Applicant: DENSO CORPORATION

Inventor： Kazushi SASAKI ,  Osamu SHIMANE

IPC: F02M25/07

CPC classification number: F02M26/54 ,  F02M26/48 ,  F02M2026/001

Abstract: A control device executes a feedback control operation of an electric motor such that a sensed opening degree of a valve approaches a target opening degree, which is set for a time of fully closing the valve. The control device stops the energization of the electric motor after reaching of the sensed opening degree of the valve to an energization stop opening degree, which is set on a valve opening side of a full closing degree of the valve in a valve opening direction of the valve. A return spring urges the valve in a valve closing direction of the valve. The target opening degree is set on a valve closing side of the energization stop opening degree in the valve closing direction.

Abstract translation: 控制装置执行电动机的反馈控制操作，使得感测到的阀的开度接近设定为完全关闭阀的时间的目标开度。 控制装置在达到感测到的阀的开度之后停止电动机的通电，该通电停止开度设定在阀的打开方向上的阀的全闭合程度的阀开口侧 阀。 复位弹簧促使阀处于阀关闭方向。 目标开度设定在关闭方向的通电停止开度的关闭侧。