公开(公告)号：US06109224A

公开(公告)日：2000-08-29

申请号：US152269

申请日：1998-09-14

Applicant: Junya Morikawa ,  Daiji Isobe

Inventor： Junya Morikawa ,  Daiji Isobe

IPC: F02D45/00 ,  F01L1/34 ,  F02D13/02 ,  F02D41/04 ,  F02D41/14 ,  F02D41/34

CPC classification number: F02D13/0238 ,  F01L1/34 ,  F02D13/0261 ,  F02D41/009 ,  F02D41/1441 ,  F02D41/1479 ,  F02D41/1486 ,  F01L2201/00 ,  F02D2041/001 ,  F02D41/1456 ,  F02D41/187 ,  Y02T10/18

Abstract: An ECU calculates an actual relative rotational angle in a VVT based on a crank angle signal sent from a crank position sensor and a cam angle signal sent from a cam position sensor. Furthermore, the ECU calculates a fundamental target relative rotational angle based on engine operating conditions. The fundamental target relative rotational angle is corrected by a factor responsive to the change of the air-fuel ratio. Thus, a control rotational angle fed to the VVT varies in accordance with the change of the air-fuel ratio so as to stabilize the combustion and improve the power output characteristics.

Abstract translation: ECU根据从曲柄位置传感器发送的曲柄角信号和从凸轮位置传感器发送的凸轮角度信号，计算VVT中的实际相对旋转角度。 此外，ECU基于发动机工作条件来计算基本目标相对旋转角度。 通过响应于空燃比变化的因数校正基本目标相对旋转角度。 因此，供给到VVT的控制旋转角度根据空燃比的变化而变化，从而稳定燃烧，提高功率输出特性。

公开(公告)号：US6000375A

公开(公告)日：1999-12-14

申请号：US022121

申请日：1998-02-11

Applicant: Daiji Isobe

Inventor： Daiji Isobe

IPC: F01L1/34 ,  F02D9/02 ,  F02D11/10 ,  F02D13/02 ,  F02D41/00 ,  F02D41/04 ,  F02D41/06 ,  F02D45/00

CPC classification number: F02D13/0238 ,  F01L1/34 ,  F02D13/0261 ,  F02D41/0002 ,  F01L2201/00 ,  F02D2013/0292 ,  F02D2041/001 ,  F02D2041/002 ,  Y02T10/18 ,  Y02T10/42

Abstract: In a valve timing control for an engine having an electronic throttle control system, the response of a valve timing control mechanism is estimated by operating condition of the engine. In addition to controlling a relative rotation angle of the VVT, a throttle correction gain for correcting the opening angle of a throttle valve so as to be adapted to the response of the VVT is calculated. The throttle valve is controlled by the calculated gain. When the response of the VVT is slow, the opening angle of the throttle valve is corrected on the basis of the response. Thus, a rapid engine acceleration is suppressed, thereby preventing occurrence of misfire.

Abstract translation: 在具有电子节气门控制系统的发动机的气门正时控制中，通过发动机的工作状态来估计气门正时控制机构的响应。 除了控制VVT的相对旋转角度之外，还计算用于校正节流阀的开度角以适应VVT的响应的节气门校正增益。 节流阀由计算的增益控制。 当VVT的响应慢时，基于响应来校正节流阀的打开角度。 因此，抑制了快速的发动机加速，从而防止失火的发生。

公开(公告)号：US5845492A

公开(公告)日：1998-12-08

申请号：US706692

申请日：1996-09-06

Applicant: Daiji Isobe ,  Kenichi Sago ,  Shigenori Isomura

Inventor： Daiji Isobe ,  Kenichi Sago ,  Shigenori Isomura

IPC: F01N3/22 ,  F01N3/32 ,  F02B33/34 ,  F02B33/44 ,  F02D17/02 ,  F02D21/08 ,  F02D37/02 ,  F02D41/00 ,  F02D41/02 ,  F02D41/14 ,  F02D41/36 ,  F02M25/07 ,  F02P5/15 ,  F01N3/20 ,  F02D41/06

CPC classification number: F02P5/1506 ,  F01N3/22 ,  F01N3/32 ,  F02B33/34 ,  F02B33/446 ,  F02D17/02 ,  F02D37/02 ,  F02D41/0065 ,  F02D41/0087 ,  F02D41/024 ,  F02D41/0245 ,  F02D41/025 ,  F02D41/1408 ,  F02M26/36 ,  F02M26/71 ,  F01N2430/02 ,  F02D2200/0802 ,  F02D2200/0804 ,  F02M26/03 ,  F02M26/15 ,  Y02T10/26 ,  Y02T10/46 ,  Y02T10/47

Abstract: In an engine exhaust catalyst warm-up control, ignition timing is delayed from normal first to raise the catalyst temperature, and then a fuel injection amount is dithered to increase and decrease alternately from a normal amount until the catalyst temperature reaches the catalyst activation completion temperature. In place of the ignition delay control, afterburning control may be employed in which fuel cut for a cylinder and fuel increase for the other cylinders are executed. Further, the catalyst warm-up control may be performed by controlling a supercharging operation and an exhaust gas recirculation operation cooperatively.

Abstract translation: 在发动机排气催化剂预热控制中，点火正时从正常开始延迟以提高催化剂温度，然后将燃料喷射量交替地从正常量增加和减少直到催化剂温度达到催化剂活化完成温度 。 代替点火延迟控制，可以采用后燃烧控制，其中执行用于其它气缸的气缸燃料切断和燃料增加。 此外，催化剂预热控制可以通过协调地控制增压操作和排气再循环操作来执行。

公开(公告)号：US5546915A

公开(公告)日：1996-08-20

申请号：US510670

申请日：1995-08-03

Applicant: Daiji Isobe

Inventor： Daiji Isobe

IPC: F02M25/07 ,  F02B1/04 ,  F02D21/08 ,  F02D45/00

CPC classification number: F02D41/0065 ,  F02M26/28 ,  F02M26/33 ,  F02M26/47 ,  F02B1/04 ,  F02D2041/0067 ,  F02M26/48 ,  Y02T10/47

Abstract: An EGR valve in an EGR passage is provided with an EGR gas temperature sensor. When a detected EGR gas temperature is within a deposit generating temperature range, the opening of the EGR valve is corrected to the OPEN side to increase the EGR flow rate, and thereby the temperatures of the inside wall of the EGR passage and the EGR valve are quickly raised. Therefore, the heat radiation (temperature fall) of the EGR gas can be reduced and the EGR gas temperature is raised to or higher than the deposit generation temperature range. The accumulation of deposit on the inside wall of the EGR passage, a valve element of the EGR valve, etc. can be restrained. The EGR gas temperature may be estimated from engine conditions and the opening of the EGR valve.

Abstract translation: 在EGR通路中的EGR阀设置有EGR气体温度传感器。 当检测到的EGR气体温度在沉积物发生温度范围内时，EGR阀的打开被校正到OPEN侧以增加EGR流量，从而EGR通道和EGR阀的内壁的温度为 快速提高 因此，可以减少EGR气体的热辐射（温度下降），将EGR气体温度升高到或高于沉积物发生温度范围。 可以抑制在EGR通路的内壁上的沉积物，EGR阀的阀元件等的累积。 EGR气体温度可以根据发动机状况和EGR阀的开度来估计。