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    • 93. 发明授权
    • Method for compensating for valve lift deviation between engines equipped with CVVL mechanism
    • 补偿装有CVVL机构的发动机之间气门升程偏差的方法
    • US08857409B2
    • 2014-10-14
    • US13189293
    • 2011-07-22
    • Joonsuck Lee
    • Joonsuck Lee
    • F02D13/00F01L1/344F02D13/02F01L1/053
    • F02D13/0207F01L1/3442F01L2001/0537F01L2800/00F01L2800/09F01L2800/14F01L2820/041Y02T10/18
    • A method is provided for compensating for a valve lift deviation between engines equipped with a CVVL mechanism, in which the valve lift deviation is compensated for by an MAF sensor for measuring a reference air flow rate and an MAP sensor for measuring the pressure of an intake manifold. The method includes determining whether learning conditions for learning a valve lift deviation are met; after the determination, comparing a value MAP_MES measured by the MAP sensor and a modeled pressure MAP_MDL of a surge tank; if the MAP_MES value and the MAP_MDL value are different, learning the valve lift, and after the learning, calculating the final valve lift by adding the learned value of the valve lift to the basic valve lift characteristics. Various types of deviations in valve lift can be solved by using a learned value of valve lift deviation, the engines can have the same characteristics because a deviation in intake air flow rate is minimized by learning the valve lift of the engines, and the quality of the engine of the CVVL mechanism can be improved.
    • 提供了一种补偿装备有CVVL机构的发动机之间的气门升程偏差的方法,其中气门升程偏差由用于测量参考空气流量的MAF传感器补偿,MAP传感器用于测量进气压力 多数。 该方法包括确定是否满足用于学习气门升程偏差的学习条件; 在确定之后,比较由MAP传感器测量的值MAP_MES和缓冲罐的建模压力MAP_MDL; 如果MAP_MES值和MAP_MDL值不同,学习气门升程,并且在学习之后,通过将阀提升的学习值加到基本的气门升程特性来计算最终的气门升程。 通过使用阀门升程偏差的学习值可以解决气门升程中的各种偏差,发动机可以具有相同的特性,因为通过学习发动机的气门升程来最小化进气流量的偏差,并且质量 可以提高CVVL机构的发动机。
    • 99. 发明授权
    • Failure detection apparatus for variable valve timing and lift control system of internal combustion engine
    • 内燃机可变气门正时和升程控制系统故障检测装置
    • US07438046B2
    • 2008-10-21
    • US11642944
    • 2006-12-21
    • Katsura OkuboYuji YasuiMasahiro SatoKoichiro Shinozaki
    • Katsura OkuboYuji YasuiMasahiro SatoKoichiro Shinozaki
    • F02D13/04F01L1/00
    • F02D13/0207F01L1/20F01L1/34F01L13/0063F01L2800/14F01L2820/043F02D35/023F02D2200/025Y02T10/18
    • A failure detection apparatus for preventing erroneous detection due to a degradation of a sensor and thereby accurately performing failure detection of a variable valve timing and lift control system is provided. The detection apparatus detects a failure of a variable valve timing and lift control system in an engine. The detection apparatus detects a vibration inside an engine cylinder, extracts the component of seating sound of the valve from the output signal of the sensor, determines an actual seating time of said valve from the component of seating sound, and calculates a target seating time of said valve based on at least one of a requested lift amount, a requested advance angle, and a requested open angle depending on the operating conditions. The detecting apparatus corrects the actual seating time for a stationary deviation between the actual seating time and the target seating time caused by degradation or unevenness of the sensor. The detecting apparatus determines a failure of the variable valve timing and lift control system by comparing the corrected actual seating time with the target seating time.
    • 提供一种故障检测装置,用于防止由于传感器的劣化导致的错误检测,从而准确地执行可变气门正时和升程控制系统的故障检测。 检测装置检测发动机中的可变气门正时和升程控制系统的故障。 检测装置检测发动机气缸内的振动,从传感器的输出信号中提取阀的座位声音的分量,根据座位声音的分量确定所述阀的实际就座时间,并计算目标就座时间 基于所述操作条件,所述阀基于所请求的提升量,请求的提前角和所请求的开启角中的至少一个。 检测装置校正由于传感器的劣化或不均匀性引起的实际就座时间和目标就座时间之间的固定偏差的实际就座时间。 检测装置通过将校正的实际就座时间与目标就座时间进行比较来确定可变气门正时和升程控制系统的故障。