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71. 发明专利

JPH1162716A EMISSION GAS REFLUX CONTROLLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH1162716A
公开(公告)日：1999-03-05
申请号：JP23150097
申请日：1997-08-27
申请人： TOYOTA MOTOR CORP
发明人： MORITA KOJI
IPC分类号： G01M15/04 , F02M25/07 , G01M15/00
摘要： PROBLEM TO BE SOLVED: To accurately and speedily judge abnormality of an emission gas reflux control valve by judging it based on a difference between a detected value by a means for detecting an actual opening when driven with the emission gas reflux control valve entirely closed and a detected value by the means for detecting the actual opening when driven with the emission gas reflux control valve fully opened. SOLUTION: An ECU 15 controls a three way switching valve 14 in accordance with an operating status of an internal combustion engine 1 and controls an opening of an EGR valve 30 with a negative pressure for a driving source, when an operating status of an engine is judged to be in an EGR execution area by output signals from various sensors. In this case, a target opening corresponding to an engine speed and a load is calculated, and a target duty ratio corresponding to the target opening is calculated. An actual opening d detected by a lift sensor 21 and the target opening are also compared, and a duty ratio is compensated so as to make the difference zero. A difference of the opening between when a EGR valve is fully opened and when it is completely closed is found, and if the difference is less than a movement amount of a valve shaft 24 moved from an entirely closed position to a fully opened position when the EGR valve 18 is normal, the EGR valve 18 is judged abnormal.

72. 发明专利

JP2001073846A FUEL INJECTION AMOUNT CONTROL DEVICE OF INTERNAL- COMBUSTION ENGINE 失效
公开(公告)号：JP2001073846A
公开(公告)日：2001-03-21
申请号：JP24866299
申请日：1999-09-02
申请人： TOYOTA MOTOR CORP
发明人： MORITA KOJI
IPC分类号： F02M47/00 , F02D41/10 , F02D41/14 , F02M47/02 , F02M55/02 , F02M65/00
摘要： PROBLEM TO BE SOLVED: To suppress misfire or smoke generation by determining the correction factor for the fuel injection amount control value through grasping of the actual fuel injection amount while internal-combustion engine is in the regular operating condition as specified, and enhancing the air-fuel ratio controlling accuracy in the stratified combustion. SOLUTION: When the fuel pressure PR having attained the value PR0 during the fuel cut and stabilized decreases to PR1 during the minimum valve opening time injection Δt after the fuel cut, the fuel pressure drop ΔP (=PR0-PR1) is an amount accurately reflecting the actual fuel injection amount. The value ΔP/Δt will represent the total flow rate characteristic of the injector group, and a great ΔP/Δt signifies that the rate of injection is large. The factor for correcting the fuel injection amount controlling value is determined from ΔP/Δt.

73. 发明专利

JPH08232769A EXHAUST GAS REFLUX CONTROL DEVICE 失效
公开(公告)号：JPH08232769A
公开(公告)日：1996-09-10
申请号：JP3814995
申请日：1995-02-27
申请人： TOYOTA MOTOR CORP
发明人： MORITA KOJI , ONAKA HIDEMI , IZUMITANI NAOHIDE
IPC分类号： F02M25/07 , F02D45/00
摘要： PURPOSE: To realize high-precise EGR control without using an altitude sensor by a method wherein an altitude amount is calculated based on a maximum opening amount of an EGR valve and a target EGR valve opening amount is corrected based on the calculating value, in an exhaust gas reflux control device to effect feedback control by using an EGR valve with a lift sensor. CONSTITUTION: A control circuit 10 inputs a detecting value for a lift amount of the shaft 33 of an EGR valve 9 from a lift sensor 30, and effects feedback drive of a load control valve 50 so that a lift value is adjusted to a target value responding to an engine operation state. In this case, in a highland decision processing, in a high load operation region wherein a negative pressure P3 in an intake pipe is reduced to a value lower than a pressure regulation negative pressure P2 necessary to allow full opening of the EGR valve 9, since a difference due to an altitude is produced at a maximum pressure regulation negative pressure, i.e., a maximum lift amount (a maximum valve opening amount) driven at a negative pressure P3 in the intake pipe, a highland is decided through detection of the difference. According to a decided altitude, a target EGR valve opening amount is corrected.

74. 发明专利

JP2019020232A ガスセンサ审中-公开
公开(公告)号：JP2019020232A
公开(公告)日：2019-02-07
申请号：JP2017138355
申请日：2017-07-14
申请人： DENSO CORP
发明人： MORITA KOJI , KOYANAGI YOSHIHIKO , TAKABAYASHI HIROYUKI
IPC分类号： G01N27/41 , G01N27/409
摘要：【課題】ハウジングの永久変形を抑制し、ガスセンサの高温環境下における気密性を確保することができるガスセンサを提供すること。【解決手段】ガスセンサ1は、保持穴21を有するハウジング2と、固体電解質体及び電極を有するセンサ素子3と、センサ素子3を保持して保持穴21に配置された絶縁碍子4と、保持穴21と絶縁碍子4との隙間S1に充填されたセラミック粉末からなるシール材51とを備える。ガスセンサ1においては、ハウジング2のかしめ部24によってシール材51が圧縮されており、このシール材51によって隙間S1が封止されている。ハウジング2は、650℃における0.2%耐力が80MPa以上であるフェライト系ステンレス鋼からなる。【選択図】図1

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