公开(公告)号：US06446614B1

公开(公告)日：2002-09-10

申请号：US09704786

申请日：2000-11-03

申请人： Takuya Matsuoka ,  Mamoru Yoshioka ,  Yoshihiko Hyoudou ,  Naoya Takagi

发明人： Takuya Matsuoka ,  Mamoru Yoshioka ,  Yoshihiko Hyoudou ,  Naoya Takagi

IPC分类号： F02M3704

CPC分类号： F02D29/06 ,  F02M25/0809

摘要： 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.

摘要翻译： 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。

公开(公告)号：US06371089B1

公开(公告)日：2002-04-16

申请号：US09696025

申请日：2000-10-26

申请人： Takuya Matsuoka ,  Mamoru Yoshioka ,  Yoshihiko Hyoudou ,  Naoya Takagi

发明人： Takuya Matsuoka ,  Mamoru Yoshioka ,  Yoshihiko Hyoudou ,  Naoya Takagi

IPC分类号： F02M3704

CPC分类号： B60W20/50 ,  B60K1/02 ,  B60K6/365 ,  B60K6/445 ,  B60W10/06 ,  B60W20/00 ,  B60W2520/10 ,  B60W2540/10 ,  B60W2550/12 ,  F02M25/0809 ,  Y02T10/6239 ,  Y10S903/903

摘要： A fuel vapor purge system has a canister for adsorbing fuel vapor from a fuel tank, a bypass passage bypassing the canister, and a bypass valve for controlling the state of connection of the bypass passage to a purge passage. The bypass passage is provided with a venturi so that the flow passage resistance of the bypass passage is normally greater than the flow passage resistance of the canister. The amount of flow of gas from an air chamber to an intake passage changes in accordance with the flow passage resistance of the passage. In this case, the tank internal pressure in the air chamber converges to a value corresponding to the flow passage resistance of the passage between the air chamber and the intake passage. Therefore, based on the tank internal pressure occurring before and after the supply of a drive signal to the bypass valve, it is determined whether the bypass passage has a clogged abnormality and whether the bypass valve has a fixation abnormality.

摘要翻译： 燃料蒸气吹扫系统具有用于吸收来自燃料箱的燃料蒸气的罐，旁通罐的旁通通道和用于控制旁通通道与净化通道的连接状态的旁通阀。 旁路通道设有文氏管，使得旁路通道的流路阻力通常大于罐的流道阻力。 从气室到进气通道的气体流量根据通道的流通阻力而变化。 在这种情况下，气室中的罐内压力会收敛到与气室和进气通道之间的通道的流通阻力相对应的值。 因此，基于在向旁通阀提供驱动信号之前和之后发生的罐内部压力，确定旁路通道是否具有堵塞的异常以及旁通阀是否具有固定异常。

公开(公告)号：US06474148B2

公开(公告)日：2002-11-05

申请号：US09782052

申请日：2001-02-14

申请人： Naoya Takagi ,  Mamoru Yoshioka ,  Yoshihiko Hyoudou

发明人： Naoya Takagi ,  Mamoru Yoshioka ,  Yoshihiko Hyoudou

IPC分类号： G01M1500

CPC分类号： F02M25/0818

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08997470B2

公开(公告)日：2015-04-07

申请号：US13635065

申请日：2010-03-17

申请人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi

发明人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi

IPC分类号： F01N3/00 ,  F01N3/20 ,  F01N3/28 ,  F01N3/05

CPC分类号： F01N3/2046 ,  F01N3/055 ,  F01N3/2013 ,  F01N3/2026 ,  F01N3/2853 ,  F01N2900/1602 ,  Y02T10/26

摘要： An exhaust gas purifying device for an internal combustion engine, including: an electrically heated catalyst which has a catalyst carrier supporting a catalyst and a carrier retention unit which is provided on an outer periphery of the catalyst carrier, which retains the catalyst carrier, and which has an electrical insulation property; and a cooling unit which cools the carrier retention unit. Therefore, it is possible to prevent the temperature of the carrier retention unit from becoming high, and it becomes possible to appropriately ensure the insulation property of the electrically heated catalyst. Hence, it becomes possible to expand a condition range in which the current can be applied to the electrically heated catalyst.

摘要翻译： 一种用于内燃机的废气净化装置，包括：具有负载催化剂的催化剂载体的电加热催化剂和保持催化剂载体的催化剂载体的外周上设置的载体保持单元， 具有电绝缘性能; 以及冷却载体保持单元的冷却单元。 因此，可以防止载体保持单元的温度变高，并且可以适当地确保电加热的催化剂的绝缘性。 因此，可以扩大电流可以施加到电加热的催化剂的条件范围。

公开(公告)号：US08776586B2

公开(公告)日：2014-07-15

申请号：US13994570

申请日：2010-12-15

申请人： Naoya Takagi ,  Mamoru Yoshioka ,  Takashi Watanabe

发明人： Naoya Takagi ,  Mamoru Yoshioka ,  Takashi Watanabe

IPC分类号： G01M15/10

CPC分类号： F01N11/00 ,  F01N3/10 ,  F01N3/2013 ,  F01N9/00 ,  F01N9/007 ,  F01N11/007 ,  F01N2550/02 ,  F01N2550/22 ,  F02D41/0255 ,  F02D41/1454 ,  F02D41/1474 ,  F02D41/221 ,  F02D2200/0804 ,  Y02T10/26 ,  Y02T10/47

摘要： Whether or not an electrically heated catalyst is normal is detected by accurately detecting whether the temperature of the electrically heated catalyst has gone up. To this end, provision is made for an air fuel ratio control device that adjusts an air fuel ratio of an exhaust gas flowing into the electrically heated catalyst to a rich air fuel ratio, at the time of starting of an internal combustion engine, a downstream side detection device that is arranged at the downstream side of the electrically heated catalyst and detects a concentration of oxygen in the exhaust gas, and a determination device that determines whether the electrically heated catalyst is electrically energized, based on the time at which the oxygen concentration detected by the downstream side detection device changes to a value indicating a rich air fuel ratio at the time when the air fuel ratio of the exhaust gas is adjusted by the air fuel ratio control device to the rich air fuel ratio, after starting of the internal combustion engine.

摘要翻译： 通过精确检测电加热催化剂的温度是否升高来检测电加热催化剂是否正常。 为此，提供了一种空燃比控制装置，其在内燃机起动时将流入电加热催化剂的废气的空燃比调节为浓空燃比，下游 所述侧面检测装置配置在所述电加热催化剂的下游侧，并检测排气中的氧浓度;以及判定装置，其根据所述氧浓度的时间决定所述电加热催化剂是否通电 由下游侧检测装置检测到的内部变化为表示当空燃比控制装置将排气的空燃比调节为浓空燃比时的浓空燃比的值，内部 内燃机。

公开(公告)号：US20130291630A1

公开(公告)日：2013-11-07

申请号：US13994570

申请日：2010-12-15

申请人： Naoya Takagi ,  Mamoru Yoshioka ,  Takashi Watanabe

发明人： Naoya Takagi ,  Mamoru Yoshioka ,  Takashi Watanabe

IPC分类号： F01N11/00

CPC分类号： F01N11/00 ,  F01N3/10 ,  F01N3/2013 ,  F01N9/00 ,  F01N9/007 ,  F01N11/007 ,  F01N2550/02 ,  F01N2550/22 ,  F02D41/0255 ,  F02D41/1454 ,  F02D41/1474 ,  F02D41/221 ,  F02D2200/0804 ,  Y02T10/26 ,  Y02T10/47

摘要： Whether or not an electrically heated catalyst is normal is detected by accurately detecting whether the temperature of the electrically heated catalyst has gone up. To this end, provision is made for an air fuel ratio control device that adjusts an air fuel ratio of an exhaust gas flowing into the electrically heated catalyst to a rich air fuel ratio, at the time of starting of an internal combustion engine, a downstream side detection device that is arranged at the downstream side of the electrically heated catalyst and detects a concentration of oxygen in the exhaust gas, and a determination device that determines whether the electrically heated catalyst is electrically energized, based on the time at which the oxygen concentration detected by the downstream side detection device changes to a value indicating a rich air fuel ratio at the time when the air fuel ratio of the exhaust gas is adjusted by the air fuel ratio control device to the rich air fuel ratio, after starting of the internal combustion engine.

摘要翻译： 通过精确检测电加热催化剂的温度是否升高来检测电加热催化剂是否正常。 为此，提供了一种空燃比控制装置，其在内燃机起动时将流入电加热催化剂的废气的空燃比调节为浓空燃比，下游 所述侧面检测装置配置在所述电加热催化剂的下游侧，并检测排气中的氧浓度;以及判定装置，其根据所述氧浓度的时间决定所述电加热催化剂是否通电 由下游侧检测装置检测到的内部变化为表示当空燃比控制装置将排气的空燃比调节为浓空燃比时的浓空燃比的值，内部 内燃机。

公开(公告)号：US20130025267A1

公开(公告)日：2013-01-31

申请号：US13638776

申请日：2010-04-06

申请人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi ,  Tatsuo Iida ,  Yasuo Kinoshita

发明人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi ,  Tatsuo Iida ,  Yasuo Kinoshita

IPC分类号： F01N3/20

CPC分类号： F01N3/2026 ,  F01N3/2853 ,  Y02T10/26

摘要： An electrically-heated catalytic converter comprises a catalyst support which produces heat when electric current is applied, a holding mat made of an electrical insulating material, the holding mat being provided so as to cover an outer circumference of the catalyst support, and a case which houses the catalyst support and holds the catalyst support via the holding mat. The catalytic converter treats gas flowing in the case by a catalyst supported on the catalyst support. The holding mat has a water-absorbing property. An insulation layer made of an electrical insulating material is provided between the case and the holding mat.

摘要翻译： 电加热催化转化器包括在施加电流时产生热的催化剂载体，由电绝缘材料制成的保持垫，所述保持垫设置成覆盖催化剂载体的外周;以及壳体， 容纳催化剂载体并通过保持垫保持催化剂载体。 催化转化器通过负载在催化剂载体上的催化剂处理气体流动。 保持垫具有吸水性。 由电绝缘材料制成的绝缘层设置在外壳和保持垫之间。

公开(公告)号：US08647583B2

公开(公告)日：2014-02-11

申请号：US13002264

申请日：2010-04-14

申请人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi

发明人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi

IPC分类号： B01D50/00

CPC分类号： F01N3/24 ,  F01N3/2013 ,  F01N3/2026 ,  F01N3/28 ,  F01N13/141 ,  F01N2240/16 ,  F01N2260/20 ,  F01N2470/24 ,  F01N2490/00 ,  F01N2510/02 ,  Y02T10/26 ,  Y10T29/49083

摘要： 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).

摘要翻译： 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）。

公开(公告)号：US20120247090A1

公开(公告)日：2012-10-04

申请号：US13509723

申请日：2010-03-18

申请人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi

发明人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi

IPC分类号： F01N3/20

CPC分类号： F01N3/2013 ,  F01N3/2026 ,  F01N11/00 ,  F01N2240/16 ,  F01N2550/22 ,  Y02T10/26 ,  Y02T10/47

摘要： The exhaust gas purifying device of an internal combustion engine includes: an electrically heated catalyst which is provided on an exhaust passage of the internal combustion engine, which purifies the exhaust gas drawn to the exhaust passage, and is warmed by electrification; and an electrification characteristic setting unit which set an electrification characteristic indicating a characteristic of an electrification resistance value in the electrically heated catalyst, in accordance with an electrification condition at a time of starting the electrification of the electrically heated catalyst. Thus, various determinations and controls relating to the electrically heated catalyst and using the electrification characteristic can be accurately performed.

摘要翻译： 内燃机的排气净化装置具备：电加热催化剂，其设置在内燃机的排气通路上，净化吸入排气通路的废气，通过通电进行加热; 以及电气特性设定单元，其根据电加热催化剂的通电时的通电条件，设定表示电加热催化剂中的带电电阻值的特性的带电特性。 因此，可以精确地执行与电加热的催化剂有关的各种测定和控制，并且使用电气特性。

公开(公告)号：US20120060481A1

公开(公告)日：2012-03-15

申请号：US13321739

申请日：2010-03-19

申请人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi

发明人： Mamoru Yoshioka ,  Noriaki Kumagai ,  Naoya Takagi

IPC分类号： F01N3/18 ,  F01N3/36

CPC分类号： F01N3/2026 ,  B60K6/445 ,  F01N3/2013 ,  F01N2410/03 ,  F01N2430/10 ,  F01N2590/11 ,  F02D13/0215 ,  F02D13/0261 ,  F02D29/02 ,  F02D41/0235 ,  F02D41/123 ,  F02D2200/0802 ,  Y02A50/2322 ,  Y02T10/26 ,  Y02T10/6239

摘要： A vehicle control device applied to a vehicle including an internal combustion engine and an electrically heated catalyst which is warmed by applying a current, and includes a catalyst carrier supporting a catalyst and a carrier retention unit that retains the catalyst carrier and has an electrical insulation property. The control unit performs a control of suppressing a supply of an unburned gas from the internal combustion engine to the electrically heated catalyst so that the carrier retention unit is maintained at a lower temperature than the catalyst, when a condition for performing a fuel cut of the internal combustion engine during a deceleration is satisfied. Therefore, it is possible to suppress a rapid cooling of the catalyst, and it becomes possible to maintain a temperature of the carrier retention unit at a lower temperature than a temperature of the catalyst.

摘要翻译： 一种应用于车辆的车辆控制装置，其包括通过施加电流而被加热的内燃机和电加热催化剂，并且包括支撑催化剂的催化剂载体和保持所述催化剂载体并具有电绝缘性的载体保持单元 。 控制单元执行抑制从内燃机向电加热催化剂的未燃烧气体的供给的控制，使得当执行燃料切断的条件时，载体保持单元保持在低于催化剂的温度 内燃机在减速期间得到满足。 因此，可以抑制催化剂的快速冷却，并且可以将载体保持单元的温度保持在比催化剂的温度低的温度。