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    • 3. 发明授权
    • Ignition timing control system for internal combustion engine
    • 内燃机点火正时控制系统
    • US5845620A
    • 1998-12-08
    • US366730
    • 1994-12-30
    • Kotaro MiyashitaShuichi TakagiYoshio YamamotoYoshihisa HaraHiroshi Ikeba
    • Kotaro MiyashitaShuichi TakagiYoshio YamamotoYoshihisa HaraHiroshi Ikeba
    • F02P5/15F02D45/00F02P5/152F02P5/153
    • F02P5/1527Y02T10/46
    • An ignition timing control system for an internal combustion engine that estimates the octane number of the fuel being used based on the state of engine combustion knocking and controls the ignition timing to a value not exceeding the knocking limit. The basic ignition timing is set along the knocking limit of fuel having least octane number and the maximum advance amount is set between the knocking limit and the second knocking limit of fuel having maximum octane number. Octane number is estimated from the occurrence of knocking. On the other hand, upper limit of the estimated octane number is set based on the MBT of the engine such that the estimated octane number is limited with the upper limit. Advance rate is determined based on the estimated octane number and is multiplied to the maximum advance amount to determine an ignition timing correction amount. The ignition timing is finally determined from the basic ignition timing and the ignition timing correction amount. A learning control is conducted for the octane number estimated and the estimated octane number is limited within the learned value.
    • 一种用于内燃机的点火正时控制系统,其基于发动机燃烧爆震的状态估计正在使用的燃料的辛烷值,并将点火正时控制到不超过爆震极限的值。 基本点火正时沿着具有最小辛烷值的燃料的爆震极限设定,并且在爆震极限和具有最大辛烷值的燃料的第二爆震极限之间设定最大提前量。 辛烷值估计是从敲击的发生。 另一方面,基于发动机的MBT设定估计辛烷值的上限,使得估计的辛烷值受限于上限。 基于估计的辛烷值确定提前率,并将其乘以最大提前量,以确定点火正时校正量。 点火正时最终由基本点火正时和点火正时校正量确定。 对于估计的辛烷值进行学习控制,并且在学习值内限制估计的辛烷值。
    • 4. 发明授权
    • Control system for internal combustion engines
    • 内燃机控制系统
    • US5619973A
    • 1997-04-15
    • US654387
    • 1996-05-28
    • Fumio HaraAkira FujimuraYoshihisa HaraMasahiro Sakanushi
    • Fumio HaraAkira FujimuraYoshihisa HaraMasahiro Sakanushi
    • F02D41/02F02D41/00F02D41/04F02D41/06F02M25/08
    • F02D41/0065F02D41/0032F02D41/0045F02D41/0072F02M25/08F02D41/0042F02D41/062Y02T10/47
    • A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted. In another aspect, when a vehicle on which the engine is installed is started, the purge control valve is controlled based on a special purging control amount which is progressively increased based on a parameter related to a standing start of the vehicle. In another aspect, the operation of the purge control valve is inhibited for a predetermined time period dependent on a temperature of the engine, after the start of the engine. In yet another aspect, the flow rate of purged fuel vapor is corrected in accordance with the amount of exhaust gas recirculation.
    • 用于内燃机的控制系统基于发动机的运行条件和蒸发燃料浓度依赖校正系数来控制燃料喷射量。 该控制系统包括排放在清洗通道中的清洗控制阀,该清洗通道连接用于临时存储从燃料箱产生的蒸发燃料和进气通道的罐。 在允许清洗之后,将该系数保持预定值一段预定时间,并且在清除之后的预定时间段内被禁止。 另一方面,基于发动机的运行条件和净化流量校正系数来控制排气控制阀。 当吹扫被禁止时,该系数被保持,并且在允许清洗之后根据蒸发燃料依赖的校正系数逐渐设定为更大的值。 在另一方面,当其上安装有发动机的车辆开始时,基于与车辆的起步相关的参数逐渐增加的特殊清除控制量来控制排气控制阀。 在另一方面,在发动机启动之后,根据发动机的温度,禁止清洗控制阀的操作一段预定时间。 另一方面,清洗的燃料蒸汽的流量根据废气再循环的量来校正。
    • 5. 发明授权
    • Control system for internal combustion engines
    • 内燃机控制系统
    • US5469833A
    • 1995-11-28
    • US187469
    • 1994-01-28
    • Fumio HaraAkira FujimuraYoshihisa HaraMasahiro Sakanushi
    • Fumio HaraAkira FujimuraYoshihisa HaraMasahiro Sakanushi
    • F02D41/02F02D41/00F02D41/04F02D41/06F02M25/08
    • F02D41/0065F02D41/0032F02D41/0045F02D41/0072F02M25/08F02D41/0042F02D41/062Y02T10/47
    • A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted. In another aspect, when a vehicle on which the engine is installed is started, the purge control valve is controlled based on a special purging control amount which is progressively increased based on a parameter related to a standing start of the vehicle. In another aspect, the operation of the purge control valve is inhibited for a predetermined time period dependent on a temperature of the engine, after the start of the engine.
    • 用于内燃机的控制系统基于发动机的运行条件和蒸发燃料浓度依赖校正系数来控制燃料喷射量。 该控制系统包括排放在清洗通道中的清洗控制阀,该清洗通道连接用于临时存储从燃料箱产生的蒸发燃料和进气通道的罐。 在允许清洗之后,将该系数保持预定值一段预定时间,并且在清除之后的预定时间段内被禁止。 另一方面,基于发动机的运行条件和净化流量校正系数来控制排气控制阀。 当吹扫被禁止时,该系数被保持,并且在允许清洗之后根据蒸发燃料依赖的校正系数逐渐设定为更大的值。 在另一方面,当其上安装有发动机的车辆开始时,基于与车辆的起步相关的参数逐渐增加的特殊清除控制量来控制排气控制阀。 在另一方面,在发动机启动之后,根据发动机的温度,禁止清洗控制阀的操作一段预定时间。
    • 8. 发明授权
    • Control system for internal combustion engines
    • 内燃机控制系统
    • US5634452A
    • 1997-06-03
    • US654385
    • 1996-05-28
    • Fumio HaraAkira FujimuraYoshihisa HaraMasahiro Sakanushi
    • Fumio HaraAkira FujimuraYoshihisa HaraMasahiro Sakanushi
    • F02D41/02F02D41/00F02D41/04F02D41/06F02M25/08
    • F02D41/0065F02D41/0032F02D41/0045F02D41/0072F02M25/08F02D41/0042F02D41/062Y02T10/47
    • A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction coefficient. The control system includes a purge control valve arranged in a purging passage connecting a canister for temporarily storing evaporative fuel generated from a fuel tank and an intake passage. This coefficient is held to a predetermined value for a predetermined time period after purging is permitted, and to another for a predetermined time period after purging is inhibited. In another aspect, the purge control valve is controlled based on operating conditions of the engine and a purging flow rate correction coefficient. This coefficient is held when purging is inhibited, and is progressively set to a larger value depending on the evaporative fuel-dependent correction coefficient, after purging is permitted. In another aspect, when a vehicle on which the engine is installed is started, the purge control valve is controlled based on a special purging control amount which is progressively increased based on a parameter related to a standing start of the vehicle. In another aspect, the operation of the purge control valve is inhibited for a predetermined time period after the engine has shifted from a purge control valve-disabling region to a purge control valve-enabling region.
    • 用于内燃机的控制系统基于发动机的运行条件和蒸发燃料浓度依赖校正系数来控制燃料喷射量。 该控制系统包括排放在清洗通道中的清洗控制阀,该清洗通道连接用于临时存储从燃料箱产生的蒸发燃料和进气通道的罐。 在允许清洗之后,将该系数保持预定值一段预定时间,并且在清除之后的预定时间段内被禁止。 另一方面,基于发动机的运行条件和净化流量校正系数来控制排气控制阀。 当吹扫被禁止时,该系数被保持,并且在允许清洗之后根据蒸发燃料依赖性校正系数逐渐设定为更大的值。 在另一方面,当其上安装有发动机的车辆开始时,基于与车辆的起步相关的参数逐渐增加的特殊清除控制量来控制排气控制阀。 另一方面,在发动机从清除控制阀禁用区域移动到清除控制阀使能区域之后,预定时间段内禁止清洗控制阀的操作。
    • 10. 发明授权
    • Control system for internal combustion engines
    • 内燃机控制系统
    • US5482020A
    • 1996-01-09
    • US322086
    • 1994-10-12
    • Daisuke ShimizuKotaro MiyashitaYoshihisa HaraYamamoto Yoshio
    • Daisuke ShimizuKotaro MiyashitaYoshihisa HaraYamamoto Yoshio
    • F02P5/15F02D13/02F02D41/00F02D41/02F02M25/07F02D41/04
    • F02D41/0072F02P5/1516F02B2275/18Y02T10/46Y02T10/47
    • A control system for an internal combustion engine includes an exhaust gas recirculation passage extending between the intake system and the exhaust system, for recirculating part of exhaust gases emitted from the engine, an EGR valve for controlling a flow rate of exhaust gases to be recirculated through the exhaust gas recirculation passage, and an ECU which detects an operating condition of the EGR valve, and calculates an amount of fuel to be injected, based on operating conditions of the engine. Further, the ECU calculates dynamic characteristics of the exhaust gases to be recirculated, based on operating conditions of the engine, a virtual operation amount of the EGR valve, based on the dynamic characteristics, a recirculation rate of exhaust gases, based on the virtual operation amount as well as operating conditions of the engine, and a recirculation rate of inert gases present in exhaust gases to be recirculated, based on the exhaust gas recirculation rate as well as the concentration of oxygen present in the exhaust gases, and corrects the amount of the fuel to be injected, based on the inert gas recirculation rate.
    • 用于内燃机的控制系统包括在进气系统和排气系统之间延伸的废气再循环通道,用于使从发动机排出的废气的一部分再循环; EGR阀,用于控制废气的再循环流量 废气再循环通道和ECU,其检测EGR阀的运行状态,并根据发动机的运转条件计算出喷射的燃料量。 此外,基于动态特性,基于虚拟动作的排气的再循环率,ECU基于发动机的运转条件,EGR阀的虚拟运转量,计算要再循环的废气的动态特性 基于废气再循环速率以及存在于废气中的氧浓度,存在于要再循环的废气中的惰性气体的再循环速率以及存在于排气中的氧气的浓度, 基于惰性气体再循环速率喷射的燃料。