-
1.发明授权Device for detecting abnormality of fuel supply system of internal combustion engines 失效用于检测内燃机燃料供应系统异常的装置
公开(公告)号：US5579747A
公开(公告)日：1996-12-03
申请号：US550098
申请日：1995-10-30
CPC分类号： F02M25/0809 , F02D41/0037 , F02D41/221
摘要： A device for detecting abnormality of the fuel supply system of an internal combustion engine inhibits supply of evaporative fuel to the intake passage when the air-fuel ratio correction coefficient becomes smaller than a predetermined value, and thereafter determines that the fuel supply system is normal when the air-fuel ratio correction coefficient increases above the predetermined value as a result of the inhibition of the supply of the evaporative fuel. The supply of the evaporative fuel to the intake passage is resumed after the determination that the fuel supply system is normal has been made. Determination of abnormality of the fuel supply system is inhibited after resuming of the supply of the evaporative fuel until the engine enters a predetermined operating condition in which the air-fuel ratio correction coefficient has increased. The determination of abnormality of the fuel supply system is permitted to be resumed, based on the air-fuel ratio correction coefficient when the engine has entered the predetermined operating condition.
摘要翻译： 一种用于检测内燃机的燃料供应系统的异常的装置，当空燃比校正系数变得小于预定值时，禁止向进气通道供应蒸发燃料，然后确定燃料供应系统正常 由于抑制了蒸发燃料的供给，空燃比校正系数增加到高于预定值。 在确定燃料供应系统正常之后，继续向进气通道供应蒸发燃料。 在继续供应蒸发燃料直到发动机进入空燃比校正系数增加的预定操作状态之后，禁止确定燃料供应系统的异常。 基于当发动机已经进入预定操作状态时的空燃比校正系数，允许确定燃料供给系统的异常。
-
公开(公告)号：US5676119A
公开(公告)日：1997-10-14
申请号：US719565
申请日：1996-09-25
CPC分类号： F02D41/1495 , F02D41/123
摘要： An air-fuel ratio control system for an internal combustion engine has an exhaust gas component concentration sensor having a sensor element and arranged in the exhaust system of the engine, for detecting concentration of a predetermined component present in exhaust gases emitted from the engine. An ECU controls the air-fuel ratio of an air-fuel mixture supplied to the engine, based on results of comparison between an output value from the sensor and a predetermined reference value, and detects deterioration of the exhaust gas component concentration sensor, based on the output value from the sensor. Engine operating condition sensors detect operating conditions of the engine. It is determined whether or not the engine is in a predetermined engine operating condition in which the sensor element temperature of the exhaust gas component concentration sensor lowers, based on outputs from the engine operating condition sensors. Detection of deterioration of the sensor is inhibited over a predetermined time period after the engine leaves the predetermined operating condition.
摘要翻译： 用于内燃机的空燃比控制系统具有排气组分浓度传感器，该排气组分浓度传感器具有传感器元件并且布置在发动机的排气系统中，用于检测从发动机排出的废气中存在的预定组分的浓度。 ECU根据来自传感器的输出值与规定的基准值的比较结果，控制供给到发动机的空气燃料混合物的空燃比，并基于以下方式检测废气成分浓度传感器的劣化 传感器的输出值。 发动机工况条件传感器检测发动机的运行状况。 基于来自发动机工况条件传感器的输出，确定发动机是否处于排气组分浓度传感器的传感器元件温度降低的预定发动机工作状态。 在发动机离开预定操作状态之后的预定时间段内，抑制传感器劣化的检测。
-
3.发明授权
公开(公告)号：US5212947A
公开(公告)日：1993-05-25
申请号：US847515
申请日：1992-03-06
申请人： Sachito Fujimoto , Kojiro Tsutsumi
发明人： Sachito Fujimoto , Kojiro Tsutsumi
CPC分类号： F02D41/1495 , Y02T10/22
摘要： A failure-detecting device detects failure of an air-fuel ratio sensor arranged downstream of a three-way catalyst in an exhaust passage of an internal combustion engine. The air-fuel ratio of an air-fuel mixture supplied to the engine is perturbed with a predetermined repetition period and by a predetermined amplitude. There is detected an amount of change in an output from the air-fuel ratio sensor responsive to the perturbed air-fuel ratio. Failure of the air-fuel ratio sensor is detected based on the amount of change in the output from the air-fuel ratio sensor.
摘要翻译： 故障检测装置检测配置在内燃机的排气通路内的三元催化剂下游的空燃比传感器的故障。 提供给发动机的空气燃料混合物的空燃比以预定的重复周期和预定的振幅被扰动。 响应于扰动的空燃比，检测到来自空燃比传感器的输出的变化量。 基于来自空燃比传感器的输出的变化量来检测空燃比传感器的故障。
-
公开(公告)号：US5850820A
公开(公告)日：1998-12-22
申请号：US771255
申请日：1996-12-20
CPC分类号： F02M25/0809 , F02D41/0032 , F02M25/08
摘要： An evaporative fuel control system for an internal combustion engine having a throttle valve arranged in the intake system. A canister adsorbs evaporative fuel generated in the fuel tank. A purging passage extends between the canister and the intake system, for purging evaporative fuel into the intake system at a location downstream of the throttle valve, and a purge control valve is arranged across the purging passage, for controlling the flow rate of evaporative fuel supplied to the intake system through the purging passage. When the engine is in a predetermined operating condition, the flow rate of evaporative fuel supplied to the engine is changed by controlling the purge control valve, then the degree of influence of the evaporative fuel on an air-fuel ratio of a mixture supplied to the engine is detected before and after the changing of the flow rate of the evaporative fuel, and an operating error of the purge control valve is determined based on the detected degree of influence.
摘要翻译： 一种用于内燃机的蒸发燃料控制系统，其具有布置在进气系统中的节流阀。 一个罐吸附燃料箱中产生的蒸发燃料。 清洗通道在罐和进气系统之间延伸，用于在节流阀下游的位置处将蒸发燃料吹扫到进气系统中，并且净化控制阀布置在净化通道两侧，用于控制供应的蒸发燃料的流量 通过清洗通道进入进气系统。 当发动机处于预定操作状态时，通过控制排气控制阀来改变供给发动机的蒸发燃料的流量，然后蒸发燃料对供给到发动机的混合物的空燃比的影响程度 在改变蒸发燃料的流量之前和之后检测发动机，并且基于检测到的影响程度来确定清洗控制阀的操作误差。
-
公开(公告)号：US5163403A
公开(公告)日：1992-11-17
申请号：US812993
申请日：1991-12-24
CPC分类号： F02D13/0215 , F02P5/1502 , F02B2275/18 , F02D2041/001 , Y02T10/18 , Y02T10/46
摘要： An ignition timing control system for an internal combustion engine in which an ECU sets a basic spark advance value in response to operating condition of the engine, corrects the set basic spark advance value, and delimits the corrected spark advance value in a spark retarding direction by means of a retard limiting value. The ECU further detects operating conditons of a valve timing changing system which changes the valve timing of at least one of an intake valve and an exhaust valve of the engine, and is responsive to the detected operating conditions of the valve timing changing system for changing the retard limiting value, e.g. in such a manner that when low-speed valve timing is selected, the retard limiting value is changed toward an advanced side relative to a value thereof set when high-speed valve timing is selected.
摘要翻译： 一种用于内燃机的点火正时控制系统，其中ECU根据发动机的运行状态设定基本的火花提前值，校正设定的基本火花提前值，并且通过在火花熄火方向上界定校正的火花提前值， 延迟限制值的手段。 ECU进一步检测改变发动机的进气门和排气门中的至少一个的气门正时的气门正时改变系统的运行状态，并响应于检测到的气门正时改变系统的运行状况， 延迟限制值，例如 以当选择低速气门正时时，延迟限制值相对于选择高速气门正时时设定的值而向前进方向变化。
-
6.发明授权Air-fuel ratio sensor deterioration-detecting system for internal combustion engines 失效用于内燃机的空燃比传感器劣化检测系统
公开(公告)号：US5692486A
公开(公告)日：1997-12-02
申请号：US726169
申请日：1996-10-04
申请人： Kojiro Tsutsumi , Yuji Fujiki , Toshitaka Hachiro , Shigeto Kashiwabara , Fumio Hara , Sachito Fujimoto
发明人： Kojiro Tsutsumi , Yuji Fujiki , Toshitaka Hachiro , Shigeto Kashiwabara , Fumio Hara , Sachito Fujimoto
CPC分类号： F02D41/1441 , F02D41/1495
摘要： An air-fuel ratio sensor deterioration-detecting system is provided for an internal combustion engine having first and second air-fuel ratio sensors arranged in the exhaust system upstream and downstream of a catalytic converter therein. An ECU calculates a control parameter, based on an output from the second air-fuel ratio sensor, calculates an air-fuel ratio correction amount, based on an output from the first air-fuel ratio sensor and the calculated control parameter, and executes air-fuel ratio feedback control, based on the calculated air-fuel ratio correction amount. The ECU also determines deterioration of the second air-fuel ratio sensor, based on the output from the same in such a manner that the air-fuel ratio correction amount is increased or decreased by a predetermined amount, based on the output from the second air-fuel ratio when a variation in the second air-fuel ratio sensor output falls within a predetermined small variation range during execution of the air-fuel ratio feedback control, and the second air-fuel ratio sensor is determined to be deteriorated when the output variation falls within the predetermined small variation range even after the increase or decrease of the air-fuel ratio correction amount.
摘要翻译： 本发明提供了一种用于内燃机的空燃比传感器劣化检测系统，该内燃机具有布置在排气系统中的催化转化器的上游和下游的第一和第二空燃比传感器。 ECU根据来自第二空燃比传感器的输出，根据第一空燃比传感器的输出和计算出的控制参数，计算出空燃比校正量的控制参数，并执行空气 - 燃料比反馈控制，基于所计算的空燃比校正量。 ECU还根据第二空燃比传感器的输出，根据第二空气燃料比传感器的输出，以空燃比校正量增加或减少预定量的方式，确定第二空燃比传感器的劣化 当在空燃比反馈控制执行期间第二空燃比传感器输出的变化落在预定的小变化范围内时，确定第二空燃比传感器的输出变化量 即使在空燃比校正量的增加或减少之后，也落在预定的小变化范围内。
-
公开(公告)号：US5263461A
公开(公告)日：1993-11-23
申请号：US922422
申请日：1992-07-31
CPC分类号： F02M25/0809
摘要： An evaporative fuel-purging control system for an internal combustion engine incorporates a flowmeter arranged across a purging passage for outputting an output value indicative of the flow rate of a mixture of evaporative fuel and air being purged through the purging passage. Abnormality of the flowmeter is determined, based on a value of the output value therefrom assumed when the purging of the gaseous mixture is stopped. Alternatively or in combination, abnormality of the flowmeter is determined, based on a value of the output value therefrom assumed when the purging of the gaseous mixture is resumed after stoppage thereof.
摘要翻译： 用于内燃机的蒸发燃料清除控制系统包括布置在净化通道两侧的流量计，用于输出表示蒸发燃料和通过净化通道净化的空气的混合物的流量的输出值。 基于当气体混合物的清洗停止时假定的输出值的值来确定流量计的异常。 作为替代或组合，基于在停止后重新开始气体混合物的清洗时假定的输出值的值来确定流量计的异常。
-
公开(公告)号：US5201173A
公开(公告)日：1993-04-13
申请号：US827664
申请日：1992-01-29
CPC分类号： F02D41/0047 , F02D41/0235 , F01N2430/04 , F02D2041/0265 , F02D2200/0802 , Y02T10/47
摘要： A catalyst temperature control system is provided for an internal combustion engine having a catalyst arranged in the exhaust system for purifying noxious components in exhaust gases emitted from the engine, and an exhaust gas recirculation passage connected to the intake system and the exhaust system for returning part of the exhaust gases from the exhaust system to the intake system. The temperature of a catalyst bed of the catalyst is detected. An ECU increases a recirculation amount of exhaust gases flowing through the exhaust gas recirculation passage, when the detected temperature of the catalyst bed is higher than a first predetermined value, and enriches the air-fuel ratio of a mixture supplied to the engine. when the detected temperature of the catalyst bed is higher than a second predetermined value upon the lapse of a predetermined time period after the start of increase of the recirculation amount.
摘要翻译： 提供一种催化剂温度控制系统，该内燃机具有布置在排气系统中的催化剂，用于净化从发动机排出的废气中的有害成分，以及连接到进气系统和排气系统的废气再循环通道，用于返回部件 的废气从排气系统到进气系统。 检测催化剂床的温度。 当催化剂床的检测温度高于第一预定值时，ECU增加流经废气再循环通道的废气的再循环量，并且丰富了供给发动机的混合物的空燃比。 当催化剂床的检测温度在再循环量的增加开始经过预定时间段之后高于第二预定值时。
-
9.发明授权Air-fuel ratio sensor deterioration-detecting system for internal combustion engines 失效用于内燃机的空燃比传感器劣化检测系统
公开(公告)号：US5577488A
公开(公告)日：1996-11-26
申请号：US549119
申请日：1995-10-27
CPC分类号： F02D41/1441 , F02D41/1495
摘要： An air-fuel ratio sensor deterioration-detecting system for an internal combustion engine includes a catalytic converter arranged in the exhaust system, first and second air-fuel ratio sensors arranged in the exhaust system at respective locations upstream and downstream of the catalytic converter, and an ECU which calculates a value of a first control parameter, based on an output from the second air-fuel ratio sensor, and executes air-fuel ratio feedback control, based on the calculated value of the first control parameter. A value of a second control parameter to be used for calculating the value of the first control parameter is calculated based on the output from the second air-fuel ratio sensor. Whether the second air-fuel ratio sensor is deteriorated is determined based on the output from the second air-fuel ratio sensor. A value of at least one of the first and second control parameters is increased when a variation in the output from the second air-fuel ratio sensor is small during execution of the air-fuel ratio feedback control, and it is determined that the second air-fuel ratio sensor is deteriorated when the variation in the output from the second air-fuel ratio sensor is continuously small over a predetermined time period after the value of the at least one of the first and second control parameters has been increased.
摘要翻译： 用于内燃机的空燃比传感器劣化检测系统包括布置在排气系统中的催化转化器，在催化转化器的上游和下游的各个位置处布置在排气系统中的第一和第二空燃比传感器，以及 ECU，其基于来自第二空燃比传感器的输出计算第一控制参数的值，并且基于所计算的第一控制参数的值来执行空燃比反馈控制。 基于来自第二空燃比传感器的输出计算用于计算第一控制参数的值的第二控制参数的值。 基于第二空燃比传感器的输出来确定第二空燃比传感器是否劣化。 当在执行空燃比反馈控制期间来自第二空燃比传感器的输出的变化小时，增加第一和第二控制参数中的至少一个的值，并且确定第二空气 当所述第一和第二控制参数中的至少一个的值已经增加时，在所述第二空燃比传感器的输出的变化在预定时间段内连续变小时，所述燃料比传感器劣化。
-
公开(公告)号：US5170762A
公开(公告)日：1992-12-15
申请号：US811332
申请日：1991-12-20
申请人： Kojiro Tsutsumi , Masaki Kanehiro , Kyozo Futa , Sachito Fujimoto
发明人： Kojiro Tsutsumi , Masaki Kanehiro , Kyozo Futa , Sachito Fujimoto
CPC分类号： F02P5/152 , F02P5/1521 , Y02T10/46
摘要： An ignition timing control system for an internal combustion engine is operable to detect knocking occurring in the engine, determine basic ignition timing based upon operating conditions of the engine, correct the basic ignition timing by a correction value which is determined in response to an output from a knocking sensor, and inhibit correction of the correction value toward an advanced side with respect to at least one predetermined value in a timing retarding direction which is determined based upon operating conditions of the engine, when the correction value is greater than the at least one predetermined value. The correction value is initialized to a value based upon the difference between the correction value and the at least one predetermined value when the correction value exceeds the at least one predetermine value.
摘要翻译： 用于内燃机的点火正时控制系统可操作以检测发动机中发生的爆震，基于发动机的运行状况来确定基本点火正时，基本点火正时校正根据响应于 爆震传感器，并且当校正值大于至少一个时，在相对于基于发动机的操作条件确定的定时延迟方向上相对于至少一个预定值向前进方向校正值的校正 预定值。 当校正值超过至少一个预定值时，校正值被初始化为基于校正值与至少一个预定值之间的差值的值。
-
-
-
-
-
-
-
-
-
搜索结果
31 条记录 (耗时 0.023 秒)
