中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

4 records (took 0.01 seconds)

    EXHAUST PARTICULATE MATTER MEASURING APPARATUS
    1.
    发明申请
    EXHAUST PARTICULATE MATTER MEASURING APPARATUS 审中-公开
    废气颗粒物测量装置

    公开(公告)号：WO2007132334A2

    公开(公告)日：2007-11-22

    申请号：PCT/IB2007/001240

    申请日：2007-05-14

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIZOGUCHI, Hiroaki ,  FUJIWARA, Takahiko

    Inventor： MIZOGUCHI, Hiroaki ,  FUJIWARA, Takahiko

    IPC: G01N15/06 ,  G01N25/00

    CPC classification number: G01N1/2252 ,  F01N3/101 ,  F01N3/106 ,  F01N3/2026 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N2560/025 ,  F01N2560/05 ,  F01N2560/06 ,  F02D41/0235 ,  F02D41/123 ,  G01N15/06 ,  Y02T10/22 ,  Y02T10/26 ,  Y02T10/47

    Abstract: A PM sensor (62) for measuring particle matter in exhaust gas is disposed between a three-way catalyst (49) and a muffler (5) in an exhaust pipe (47), and has an oxidation catalyst (71) and an electrical heater (72) that are stacked together, and a temperature sensor (73) that measures a temperature of the oxidation catalyst (71) interposed between the oxidation catalyst (71) and the electrical heater (72). The oxidation catalyst (71) carries a ceria as an oxygen-storing agent that occludes oxygen in the exhaust gas, and a ECU (51) calculates a sediment amount of the exhaust particulate matter based on an amount of temperature rise when the electrical heater (72) heats the oxidation catalyst (71) and an accumulated value of an intake air amount.

    Abstract translation: 用于测量废气中的颗粒物质的PM传感器（62）设置在排气管（47）中的三元催化剂（49）和消音器（5）之间，并具有氧化催化剂（71）和电加热器 （72）和温度传感器（73），其测量介于氧化催化剂（71）和电加热器（72）之间的氧化催化剂（71）的温度。 氧化催化剂（71）携带二氧化铈作为吸留废气中的氧气的氧气储存剂，ECU（51）根据电加热器（...）的温度上升量来计算废气颗粒物质的沉降量 72）加热氧化催化剂（71）和进气量的累计值。

    INTERNAL COMBUSTION ENGINE AIR-FUEL RATIO CONTROL APPARATUS AND METHOD
    3.
    发明申请
    INTERNAL COMBUSTION ENGINE AIR-FUEL RATIO CONTROL APPARATUS AND METHOD 审中-公开
    内燃机空燃比控制装置及方法

    公开(公告)号：WO2009106940A1

    公开(公告)日：2009-09-03

    申请号：PCT/IB2009/000128

    申请日：2009-01-27

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIZOGUCHI, Hiroaki ,  NAKAGAWA, Norihisa

    Inventor： MIZOGUCHI, Hiroaki ,  NAKAGAWA, Norihisa

    IPC: F02D41/02 ,  F02D41/10 ,  F02D41/14 ,  F02D41/24

    CPC classification number: F02D41/0295 ,  F01N11/007 ,  F02D41/10 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/2454 ,  F02D2041/1409 ,  F02D2200/0814 ,  F02D2200/0816 ,  Y02T10/47

    Abstract: Internal combustion engine air-fuel ratio control apparatus and method are provided in which the target air-fuel ratio of exhaust gas flowing into an exhaust-gas purification catalyst unit (3) is controlled through at least proportional-integral control such that the correction amount per unit time of the oxygen amount in said catalyst unit (3) is maintained constant. When the intake air amount is smaller than a predetermined amount and the air-fuel ratio detected by an oxygen sensor (5) provided downstream of the catalyst unit (3) is rich, said target air-fuel ratio is controlled to suppress an increase in the air-fuel ratio in the exhaust-gas purification catalyst unit (3). Accordingly, even if rapid acceleration operation is performed in a state where the intake air amount is extremely small and the air-fuel ratio detected by the oxygen sensor (5) is rich, NOx in exhaust gas can be sufficiently removed through reduction reactions at the exhaust-gas purification catalyst unit (3).

    Abstract translation: 提供内燃机空燃比控制装置和方法，其中通过至少比例积分控制来控制流入排气净化催化剂单元（3）的废气的目标空燃比，使得校正量 在所述催化剂单元（3）中每单位时间的氧气量保持恒定。 当进气量小于预定量并且由设置在催化单元（3）下游的氧传感器（5）检测到的空燃比变浓时，控制目标空燃比以抑制 废气净化催化剂单元（3）中的空燃比。 因此，即使在进气量极小并且由氧传感器（5）检测到的空燃比变多的状态下进行快速加速操作，也可以通过在氧传感器5的还原反应充分地除去废气中的NOx 排气净化催化剂单元（3）。

    CATALYST DETERIORATION DETECTING SYSTEM OF INTERNAL COMBUSTION ENGINE
    4.
    发明申请
    CATALYST DETERIORATION DETECTING SYSTEM OF INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机催化裂化检测系统

    公开(公告)号：WO2008050216A2

    公开(公告)日：2008-05-02

    申请号：PCT/IB2007/003182

    申请日：2007-10-24

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KITAURA, Koichi ,  FUJIWARA, Takahiko ,  MIZOGUCHI, Hiroaki

    Inventor： KITAURA, Koichi ,  FUJIWARA, Takahiko ,  MIZOGUCHI, Hiroaki

    IPC: F01N3/08 ,  F01N11/00 ,  F02D41/02

    CPC classification number: F02D41/0295 ,  F01N3/10 ,  F01N11/007 ,  F02D2200/0814

    Abstract: To detect deterioration of a catalyst, active air-fuel ratio control is performed in which the exhaust air-fuel ratio (Vfr) is oscillated between the lean side and the rich side relative to a certain central air-fuel ratio (AFc). When the catalyst is caused to absorb oxygen, the exhaust air-fuel ratio is oscillated such that the exhaust air-fuel ratio shifted to the rich side is equal to or smaller than the stoichiometric air-fuel ratio (AFs), and the degree of leanness per cycle of oscillation is larger than the degree of richness. Thus, lean gas is intermittently supplied to the catalyst while the lean/rich balance of exhaust gas is biased toward the lean side, so that the catalyst is caused to absorb oxygen using the utmost O2 storage capability possessed by the catalyst.

    Abstract translation: 为了检测催化剂的劣化，执行主动空燃比控制，其中排气空燃比（Vfr）相对于一定的中央空燃比（AFc）在稀侧和富侧之间振荡。 当使催化剂吸收氧气时，使排气空燃比振荡，以使排出空燃比转移到浓侧为等于或小于化学计量空燃比（AFs）的程度， 振荡周期的稀疏度大于丰度。 因此，稀薄气体被间歇地供给到催化剂，同时废气的贫/富余量偏向稀侧，使得催化剂使用催化剂所具有的最大的O 2储存能力来吸收氧。

Patent Agency Ranking