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    • 4. 发明授权
    • Fuel storage apparatus and abnormality diagnostic method
    • 燃油储存装置及异常诊断方法
    • US06446614B1
    • 2002-09-10
    • US09704786
    • 2000-11-03
    • Takuya MatsuokaMamoru YoshiokaYoshihiko HyoudouNaoya Takagi
    • Takuya MatsuokaMamoru YoshiokaYoshihiko HyoudouNaoya Takagi
    • F02M3704
    • F02D29/06F02M25/0809
    • A fuel tank is divided into a fuel chamber and an air chamber by a bladder diaphragm. Under a condition that both the amount of intake air Ga and the engine revolution speed NE of an internal combustion engine are kept at constant values, a vapor concentration correction factor FGPG during a fuel injection duration TAU is calculated based on a change in the air-fuel ratio detected when gas is purged from the air chamber toward an intake passage of the engine. Based on the vapor concentration correction factor FGPG, it is determined whether there is fuel leakage from the fuel chamber to the air chamber. With this determination technique, a fluctuation in the air-fuel ratio is not caused by a situation where the engine is in a transitional state, during fuel leakage detection, so that the vapor concentration correction factor FGPG assumes a proper value corresponding to the vapor concentration in the air chamber. Therefore, a false determination regarding the presence/absence of fuel leakage from the fuel chamber to the air chamber is prevented.
    • 燃料箱通过气囊隔膜分成燃料室和空气室。 在内燃机的进气量和发动机转速NE都保持为恒定值的条件下,基于空燃比的变化来计算燃料喷射持续时间TAU期间的蒸汽浓度校正系数FGPG, 当气体从空气室朝向发动机的进气通道被清除时,检测到燃料比。 基于蒸气浓度校正因子FGPG,确定是否存在从燃料室到空气室的燃料泄漏。 利用该判定技术,在燃料泄漏检测时,由于发动机处于过渡状态的情况,不会引起空燃比的波动,所以蒸气浓度校正系数FGPG取相当于蒸气浓度的适当值 在空气室。 因此,能够防止燃料从燃料室向气室的泄漏的存在/不存在的错误判定。
    • 6. 发明授权
    • Diagnostic apparatus for fuel vapor purge system
    • 燃油蒸气清洗系统诊断装置
    • US06474148B2
    • 2002-11-05
    • US09782052
    • 2001-02-14
    • Naoya TakagiMamoru YoshiokaYoshihiko Hyoudou
    • Naoya TakagiMamoru YoshiokaYoshihiko Hyoudou
    • G01M1500
    • F02M25/0818
    • A diagnostic apparatus for a fuel vapor purge system is provided which includes a pressure sensor that measures a pressure in a fuel tank, and which conducts leak diagnosis of a purge path based on a change in the pressure in the fuel tank and an amount of fuel vapor generated in the fuel tank. The change in the pressure is measured after sealing the purge path while providing a difference between inside pressure and outside pressure of the purge path, and the amount of fuel vapor is measured after applying an atmospheric pressure to the purge path and sealing the purge path. The diagnostic apparatus further detects a predetermined state after starting application of the atmospheric pressure to the purge path, and determines that the purge path has reached an atmospheric pressure state upon. detection of the predetermined state. The amount of fuel vapor generated in the fuel tank is measured when it is determined that the purge path has reached the atmospheric pressure state.
    • 提供了一种用于燃料蒸气吹扫系统的诊断装置,其包括测量燃料箱中的压力的​​压力传感器,并且基于燃料箱中的压力变化和燃料量进行吹扫路径的泄漏诊断 在燃料箱中产生的蒸气。 在密封吹扫路径同时提供吹扫路径的内部压力和外部压力之间的差异来测量压力的变化,并且在向吹扫通道施加大气压力并密封吹扫路径之后测量燃料蒸气的量。 诊断装置在开始向吹扫路径施加大气压之后进一步检测出规定的状态,并且判定为清除通路已达到大气压状态。 检测预定状态。 当确定净化路径已经达到大气压力状态时,测量在燃料箱中产生的燃料蒸汽的量。
    • 8. 发明授权
    • Electric heating type catalyst and a method for manufacturing the same
    • 电加热型催化剂及其制造方法
    • US08647583B2
    • 2014-02-11
    • US13002264
    • 2010-04-14
    • Mamoru YoshiokaNoriaki KumagaiNaoya Takagi
    • Mamoru YoshiokaNoriaki KumagaiNaoya Takagi
    • B01D50/00
    • F01N3/24F01N3/2013F01N3/2026F01N3/28F01N13/141F01N2240/16F01N2260/20F01N2470/24F01N2490/00F01N2510/02Y02T10/26Y10T29/49083
    • Electricity is suppressed from flowing to a case (2) of an electric heating type catalyst (1). The electric heating type catalyst (1) is provided with a heat generation element (4) to be electrically energized to generate heat, the case (2) in which the heat generation element (4) is received, and a mat (3) inserted between the heat generation element (4) and the case (2) for insulating electricity, wherein the case (2) is formed into double pipes (24) at an upstream side and downstream side of the heat generation element (4), respectively, and an inner pipe (28) of each of the double pipes (24) is formed such that it is in contact at an upstream side or downstream side one end (25) thereof with an outer pipe (27) of each double pipe (24), with a gap being formed between the inner pipe (28) and the outer pipe (27) of each double pipe (24) at an upstream side or downstream side other end (26) of the inner pipe (28), and an insulating layer (6) for insulating electricity is provided on a surface of the case (2) from the mat (3) to the other end (26) including a range surrounded by the outer pipe (27) and the inner pipe (28) of each double pipe (24).
    • 抑制电流流向电加热型催化剂(1)的壳体(2)。 电加热型催化剂(1)具有供电以产生热量的发热元件(4),其中容纳有发热元件(4)的壳体(2)和插入 在发热元件(4)和用于绝缘电力的壳体(2)之间,其中壳体(2)分别在发热元件(4)的上游侧和下游侧形成双管(24) 并且每个双管(24)的内管(28)形成为在其一端(25)的上游侧或下游侧与每个双管(24)的外管(27)接触 ),在内管(28)的上游侧或下游侧另一端(26)处,在每个双管(24)的内管(28)和外管(27)之间形成有间隙, 在垫子(3)到另一端(26)的壳体(2)的表面上设置用于绝缘的绝缘层(6),包括由 每个双管(24)的外管(27)和内管(28)。