公开(公告)号：US07325447B2

公开(公告)日：2008-02-05

申请号：US11494738

申请日：2006-07-28

申请人： Hideki Miyahara ,  Tokiji Ito

发明人： Hideki Miyahara ,  Tokiji Ito

IPC分类号： G01M15/00

CPC分类号： F01P11/14 ,  F01P7/167 ,  F01P11/16 ,  F01P2023/00 ,  F01P2023/08 ,  F01P2031/00

摘要： A cooling apparatus for an engine is provided with a thermostat operating in such a manner as to control a supply of a coolant to a radiator. An electronic control apparatus estimates a reference temperature corresponding to a temperature of the coolant on the basis of at least a vehicle speed, and diagnoses an operating state of the thermostat on the basis of a comparison between a detected value of the coolant temperature and the reference temperature. The electronic control apparatus inhibits the diagnosis of the operating state of the thermostat in the case that any one of the following conditions i) to iii) is satisfied. i) a rate of a descending slope traveling time of a vehicle with respect to a time until the diagnosis condition is established from the start of the internal combustion engine is greater than or equal to a determination value; ii) a rate of the descending slope traveling time with respect to a general traveling time is greater than or equal to a determination value; and iii) a rate of a time of a specific state (a state in which a speed of the vehicle is greater than or equal to a reference vehicle speed and a load of the internal combustion engine is less than a reference load) with respect to the time until the diagnosis condition is established from the start of the internal combustion engine is greater than or equal to a determination value.

摘要翻译： 用于发动机的冷却装置设置有以控制向散热器供应冷却剂的方式操作的恒温器。 电子控制装置基于至少车速来估计与冷却剂的温度相对应的基准温度，并且基于冷却剂温度的检测值与参考值之间的比较来诊断恒温器的运行状态 温度。 在满足以下条件i）至iii）中的任何一个的情况下，电子控制装置禁止对恒温器的操作状态的诊断。 i）相对于从内燃机的启动确定诊断条件之后的时间，车辆的下降坡道行驶时间的比例大于或等于判定值; ii）下降斜率行进时间相对于一般行驶时间的速率大于或等于确定值; 以及iii）特定状态的时间（车辆的速度大于或等于参考车辆速度和内燃机的负载小于参考负载的状态）的速率相对于 直到从内燃机的启动确定诊断条件的时间大于或等于确定值。

公开(公告)号：US20070175414A1

公开(公告)日：2007-08-02

申请号：US11494527

申请日：2006-07-28

申请人： Hideki Miyahara ,  Tokiji Ito

发明人： Hideki Miyahara ,  Tokiji Ito

IPC分类号： F01P7/14 ,  F01P7/02

CPC分类号： F02B77/082 ,  F01P11/16 ,  F01P2025/42

摘要： A cooling apparatus includes a thermostat that adjusts a feed rate of coolant to a radiator, estimating means that estimates a coolant temperature simulated value at least based on the detection value of an intake-air temperature sensor, and diagnosis means that diagnoses an operating state of the thermostat by comparing the detection value of a coolant temperature sensor, and the coolant temperature simulated value when a diagnosis condition is established. When a ratio of an integrated value of the simulated water temperature variation in an idle state to the integrated value of the simulated water temperature variation in a normal driving state is equal to or greater than an upper limit ratio XP, the diagnosis of the operating state of the thermostat is prohibited.

摘要翻译： 一种冷却装置，包括调节向散热器的冷却剂供给速度的恒温器，至少基于进气温度传感器的检测值来推定冷却剂温度模拟值的估计单元，以及诊断装置， 通过比较冷却剂温度传感器的检测值和建立诊断条件时的冷却剂温度模拟值来控制恒温器。 当在怠速状态下的模拟水温变化的积分值与在正常行驶状态下的模拟水温变化的积分值的比率等于或大于上限比率XP时，操作状态的诊断 的恒温器是禁止的。

公开(公告)号：US20070034172A1

公开(公告)日：2007-02-15

申请号：US11494738

申请日：2006-07-28

申请人： Hideki Miyahara ,  Tokiji Ito

发明人： Hideki Miyahara ,  Tokiji Ito

IPC分类号： F01P7/14 ,  F01P5/14

CPC分类号： F01P11/14 ,  F01P7/167 ,  F01P11/16 ,  F01P2023/00 ,  F01P2023/08 ,  F01P2031/00

摘要： A cooling apparatus for an engine is provided with a thermostat operating in such a manner as to control a supply of a coolant to a radiator. An electronic control apparatus estimates a reference temperature corresponding to a temperature of the coolant on the basis of at least a vehicle speed, and diagnoses an operating state of the thermostat on the basis of a comparison between a detected value of the coolant temperature and the reference temperature. The electronic control apparatus inhibits the diagnosis of the operating state of the thermostat in the case that any one of the following conditions i) to iii) is satisfied. i) a rate of a descending slope traveling time of a vehicle with respect to a time until the diagnosis condition is established from the start of the internal combustion engine is greater than or equal to a determination value; ii) a rate of the descending slope traveling time with respect to a general traveling time is greater than or equal to a determination value; and iii) a rate of a time of a specific state (a state in which a speed of the vehicle is greater than or equal to a reference vehicle speed and a load of the internal combustion engine is less than a reference load) with respect to the time until the diagnosis condition is established from the start of the internal combustion engine is greater than or equal to a determination value.

摘要翻译： 用于发动机的冷却装置设置有以控制向散热器供应冷却剂的方式操作的恒温器。 电子控制装置基于至少车速来估计与冷却剂的温度相对应的基准温度，并且基于冷却剂温度的检测值与参考值之间的比较来诊断恒温器的运行状态 温度。 在满足以下条件i）至iii）中的任何一个的情况下，电子控制装置禁止对恒温器的操作状态的诊断。 i）相对于从内燃机的启动确定诊断条件之后的时间，车辆的下降坡道行驶时间的比例大于或等于判定值; ii）下降斜率行进时间相对于一般行驶时间的速率大于或等于确定值; 以及iii）特定状态的时间（车辆的速度大于或等于参考车辆速度和内燃机的负载小于参考负载的状态）的速率相对于 直到从内燃机的启动确定诊断条件的时间大于或等于确定值。

公开(公告)号：US06564780B2

公开(公告)日：2003-05-20

申请号：US09859450

申请日：2001-05-18

申请人： Shuichi Hanai ,  Tokiji Ito ,  Noriyuki Iden

发明人： Shuichi Hanai ,  Tokiji Ito ,  Noriyuki Iden

IPC分类号： F02M3302

CPC分类号： F02M25/0809

摘要： In a diagnostic apparatus and method for a fuel vapor purge system in which fuel vapor generated in a fuel tank trapped in a chamber is purged into an intake passage of an internal combustion engine through a purge path, a first change in a pressure of the purge path is measured after creating a pressure difference between the inside and outside of the purge path and sealing the purge path, and a second change in pressure that varies with an amount of fuel vapor generated in the fuel tank is measured while the purge path is sealed for a first period of time after an atmospheric pressure is introduced into the purge path. Then, it is determined whether leakage is present in the purge path, based on the first change and the second change in the pressure of the purge path. Before the measurement of the first and second pressure changes, a third change in the pressure that varies with an amount of fuel vapor generated in the fuel tank is measured while the purge path is sealed for a second period of time after the atmospheric pressure is introduced into the purge path before the pressure difference is created. The leakage diagnosis is inhibited when the third change in the internal pressure is greater than a predetermined value, and the leakage diagnosis is permitted when the third change is equal to or less than the predetermined value.

摘要翻译： 在用于燃料蒸汽吹扫系统的诊断装置和方法中，其中在被捕获在腔室中的燃料箱中产生的燃料蒸气通过吹扫路径被清除到内燃机的进气通道中，吹扫压力的第一变化 在净化路径的内部和外部产生压差并密封吹扫路径之后测量路径，并且在吹扫路径被密封的同时测量随燃料箱中产生的燃料蒸气量而变化的第二压力变化 在大气压力被引入净化通道中之后的第一时间段内。 然后，基于吹扫路径的第一次变化和第二次压力变化，确定吹扫路径中是否存在泄漏。 在第一和第二压力的测量变化之前，测量在燃料箱中产生的燃料蒸气量变化的压力的第三变化，同时在引入大气压力之后的第二时间段中将净化路径密封 在创建压力差之前进入吹扫路径。 当内部压力的第三变化大于预定值时，泄漏诊断被禁止，并且当第三变化等于或小于预定值时允许泄漏诊断。

公开(公告)号：US06519524B2

公开(公告)日：2003-02-11

申请号：US09837199

申请日：2001-04-19

申请人： Tokiji Ito

发明人： Tokiji Ito

IPC分类号： G01M1500

CPC分类号： F02N11/0814 ,  F02D41/003 ,  F02D41/062 ,  F02D41/22 ,  Y02T10/40 ,  Y02T10/48

摘要： An engine performs automatic intermittent operation with an ignition switch on. If the speed of the engine reaches a predetermined level when the ignition switch is on, a start flag, which indicates that the engine has started, is set to on. The start flag is maintained on even if the engine is stopped due to automatic intermittent operation until the ignition switch is turned off. That is, the engine is assumed to be running even if the engine is stopped due to automatic intermittent operation. Therefore, various control procedures are not suspended due to automatic intermittent operation of the engine.

公开(公告)号：US09341544B2

公开(公告)日：2016-05-17

申请号：US14216004

申请日：2014-03-17

申请人： Isao Nakajima ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Hiroaki Tsuji ,  Tokiji Ito ,  Tatsuro Shimada ,  Toshihiro Kato ,  Yuya Yoshikawa

发明人： Isao Nakajima ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Hiroaki Tsuji ,  Tokiji Ito ,  Tatsuro Shimada ,  Toshihiro Kato ,  Yuya Yoshikawa

IPC分类号： G01M15/10 ,  F01N11/00 ,  G01N1/22 ,  F02D41/22 ,  F02D41/14 ,  F02D41/18

CPC分类号： G01M15/102 ,  F01N11/00 ,  F01N11/007 ,  F02D41/1454 ,  F02D41/1495 ,  F02D41/18 ,  F02D41/22 ,  F02D41/222 ,  G01M15/10 ,  G01M15/104 ,  G01N1/2252 ,  Y02T10/42 ,  Y02T10/44 ,  Y02T10/47

摘要： An abnormality detecting device of an internal combustion engine according to the present invention includes a sensor nick abnormality detecting unit configured to detect a nick abnormality in a detecting element of a downstream side sensor which is provided in a downstream side of an exhaust gas purifying catalyst in an exhaust passage and generates an output corresponding to an oxygen concentration in exhaust gas, on the basis of a matter that a distribution of an output of the downstream side sensor is biased to an area in which the air-fuel ratio is leaner than a theoretical air-fuel ratio, and an inhibiting unit configured to inhibit detection of the nick abnormality of the detecting element by the sensor nick abnormality detecting unit in the case that an intake air amount exceeds a predetermined amount.

摘要翻译： 根据本发明的内燃机的异常检测装置包括传感器切痕异常检测单元，其被配置为检测设置在排气净化催化剂的下游侧的下游侧传感器的检测元件中的切口异常 排气通道，并且基于下游侧传感器的输出的分布被偏置到空燃比比理论上更稀的区域的事物，生成对应于排气中的氧浓度的输出 以及抑制单元，其被配置为在进气量超过预定量的情况下禁止由传感器切痕异常检测单元检测到检测元件的切痕异常。

公开(公告)号：US20110174251A1

公开(公告)日：2011-07-21

申请号：US13004395

申请日：2011-01-11

申请人： Fumito TAKIMOTO ,  Tokiji Ito

发明人： Fumito TAKIMOTO ,  Tokiji Ito

IPC分类号： F01L1/34

CPC分类号： F02D13/0261 ,  F01L9/04 ,  F01L2800/16 ,  Y02T10/18

摘要： A control device includes an engine valve and a variable valve actuation mechanism that is able to change at least one of a valve operating angle and valve lift of the engine valve. When the at least one of the valve operating angle and the valve lift is larger than or equal to a prescribed upper limit, the control device increases an operating speed of the variable valve actuation mechanism as compared with when the at least one of the valve operating angle and the valve lift is smaller than the prescribed upper limit.

摘要翻译： 控制装置包括能够改变发动机气门的阀操作角度和气门升程中的至少一个的发动机气门和可变气门致动机构。 当所述阀操作角度和所述气门升程中的至少一个大于或等于规定的上限时，与所述阀操作中的至少一个相比，所述控制装置增加所述可变气门致动机构的操作速度 角度和气门升程小于规定的上限。

公开(公告)号：US07284530B2

公开(公告)日：2007-10-23

申请号：US11264152

申请日：2005-11-02

申请人： Kenji Nagasaki ,  Tokiji Ito ,  Hideki Miyahara

发明人： Kenji Nagasaki ,  Tokiji Ito ,  Hideki Miyahara

IPC分类号： F02B77/08

CPC分类号： F02M25/0818 ,  F02M25/0836 ,  F02M25/0854 ,  F02M25/0872 ,  F02M25/089

摘要： A suction pump introduces negative pressure into a reference-pressure-detecting portion. A driving voltage V of the suction pump is adjusted in such a manner that pressure Pr in the reference-pressure-detecting portion is within a target pressure range. When the pressure Pr is brought into the target pressure range, the driving voltage V of the suction pump is stored as a first driving voltage V1 and the pressure Pr is stored as a reference pressure Pr. When pressure detection and leak detection process are conducted, the suction pump is driven at the first driving voltage V1 to introduce the negative pressure. The computer compares the pressure Pr with a leak determination value to determine whether a leak exists.

摘要翻译： 抽吸泵将负压引入参考压力检测部分。 调节吸入泵的驱动电压V，使得基准压力检测部的压力Pr在目标压力范围内。 当压力Pr达到目标压力范围时，抽吸泵的驱动电压V被存储为第一驱动电压V 1，并且压力Pr被存储为参考压力Pr。 当进行压力检测和泄漏检测处理时，抽吸泵以第一驱动电压V 1被驱动以引入负压。 计算机将压力Pr与泄漏确定值进行比较，以确定是否存在泄漏。

公开(公告)号：US07165447B2

公开(公告)日：2007-01-23

申请号：US11099614

申请日：2005-04-06

申请人： Hideki Miyahara ,  Tokiji Ito ,  Kenji Nagasaki

发明人： Hideki Miyahara ,  Tokiji Ito ,  Kenji Nagasaki

IPC分类号： G01M15/00

CPC分类号： F02M25/08 ,  F02M25/0818 ,  F02M25/089

摘要： When a purge amount while an engine is running is a first purge amount and the purge amount before failure diagnosis is larger than a required purge amount, an amount adsorbed in a canister before the failure diagnosis is executed is smaller than a predetermined determination value. Accordingly, an ECU executes the failure diagnosis. When the purge amount while the engine is running is a second purge amount and the purge amount before the failure diagnosis is equal to or smaller than the required purge amount, the amount adsorbed in the canister before the failure diagnosis is equal to or larger than the predetermined determination value. Accordingly the ECU does not execute the failure diagnosis. The required purge amount used for determining whether or not the failure diagnosis can be executed is determined according to the temperature before the failure diagnosis.

摘要翻译： 当发动机运行时的吹扫量是第一吹扫量，并且故障诊断之前的吹扫量大于所需吹扫量时，执行故障诊断之前吸附在罐中的量小于预定确定值。 因此，ECU执行故障诊断。 当发动机运转时的吹扫量为第二吹扫量，故障诊断前的吹扫量为所需吹扫量以下时，在故障诊断前吸附在罐中的量等于或大于 预定的确定值。 因此，ECU不执行故障诊断。 根据故障诊断前的温度来确定用于确定故障诊断是否可以执行的所需清除量。

公开(公告)号：US20050229689A1

公开(公告)日：2005-10-20

申请号：US11099614

申请日：2005-04-06

申请人： Hideki Miyahara ,  Tokiji Ito ,  Kenji Nagasaki

发明人： Hideki Miyahara ,  Tokiji Ito ,  Kenji Nagasaki

IPC分类号： F02M25/08 ,  G01M99/00 ,  G01M19/00

CPC分类号： F02M25/08 ,  F02M25/0818 ,  F02M25/089

摘要： When a purge amount while an engine is running is a first purge amount and the purge amount before failure diagnosis is larger than a required purge amount, an amount adsorbed in a canister before the failure diagnosis is executed is smaller than a predetermined determination value. Accordingly, an ECU executes the failure diagnosis. When the purge amount while the engine is running is a second purge amount and the purge amount before the failure diagnosis is equal to or smaller than the required purge amount, the amount adsorbed in the canister before the failure diagnosis is equal to or larger than the predetermined determination value. Accordingly the ECU does not execute the failure diagnosis. The required purge amount used for determining whether or not the failure diagnosis can be executed is determined according to the temperature before the failure diagnosis.

摘要翻译： 当发动机运行时的吹扫量是第一吹扫量，并且故障诊断之前的吹扫量大于所需吹扫量时，执行故障诊断之前吸附在罐中的量小于预定确定值。 因此，ECU执行故障诊断。 当发动机运转时的吹扫量为第二吹扫量，故障诊断前的吹扫量为所需吹扫量以下时，在故障诊断前吸附在罐中的量等于或大于 预定的确定值。 因此，ECU不执行故障诊断。 根据故障诊断前的温度来确定用于确定故障诊断是否可以执行的所需清除量。