公开(公告)号：US20150369187A1

公开(公告)日：2015-12-24

申请号：US14764587

申请日：2014-02-25

Applicant: CONTINENTAL AUTOMOTIVE FRANCE ,  CONTINENTAL AUTOMOTIVE GmbH

Inventor： Michael LEBLON ,  Jeremie MEMAIN

IPC: F02M51/06

CPC classification number: F02M51/0603 ,  F02D41/2096 ,  F02D41/2467 ,  F02D2041/2051 ,  F02D2041/2055

Abstract: Method for controlling a fuel injector with a piezoelectric actuator acting on a valve element, including the following steps, in the normal operation of the vehicle: (200): Estimating an engine parameter (PjEST), representative of an actual play (JREEL) between the piezoelectric actuator and the valve element, (300): Comparing the engine parameter with the equivalent parameter (PjECU) representative of the original play (JINIT): if the engine parameter differs from the equivalent parameter in such a way that the actual play is greater than the original play: Applying an electrical polarization charge to the piezoelectric actuator, in order to polarize the piezoelectric actuator during the injection of the fuel, Commanding the closure of the injector.

Abstract translation: 在车辆的正常操作中，具有作用于阀元件的压电致动器的燃料喷射器的控制方法，包括以下步骤：（200）：估计代表实际游隙（JREEL）的发动机参数（PjEST） 压电致动器和阀元件（300）：将引擎参数与代表原始游戏（JINIT）的等效参数（PjECU）进行比较：如果引擎参数与等效参数不同，实际播放次数 大于原始播放：向压电致动器施加电极化电荷，以便在注入燃料期间使压电致动器偏振，指示注射器的关闭。

公开(公告)号：US20150142295A1

公开(公告)日：2015-05-21

申请号：US14548555

申请日：2014-11-20

Applicant: CONTINENTAL AUTOMOTIVE FRANCE ,  CONTINENTAL AUTOMOTIVE GmbH

Inventor： Michael LEBLON

IPC: F02D1/08

CPC classification number: F02D1/08 ,  F02D41/2096 ,  F02D41/221 ,  F02D41/247 ,  F02D2041/1433 ,  F02D2200/0602

Abstract: Disclosed is a method for monitoring a fuel injector, the injector including a piezoelectric actuator controlling a valve unit to open or close the injector, the fuel injector including an actuator play. The method includes: measuring a plurality of compensation times of the actuator play during a simulation step preceding an injection for a given plurality of fuel pressures; calculating a parameter representing the current actuator play per the measured compensation times; comparing the parameter representing the calculated current actuator play with a predetermined reference parameter of the actuator play; and transmitting a warning message if the reference parameter is exceeded; the parameter representative of the current actuator play being calculated on the basis of a polynomial function of the measured compensation times. The polynomial order of the polynomial function corresponding to the number of measured compensation times of the actuator play for different fuel pressures.

Abstract translation: 公开了一种用于监测燃料喷射器的方法，所述喷射器包括控制阀单元以打开或关闭喷射器的压电致动器，所述燃料喷射器包括致动器游隙。 该方法包括：在对于给定的多个燃料压力的喷射之前的模拟步骤期间，测量致动器打击的多个补偿时间; 根据测量的补偿时间计算表示当前执行机构的参数; 将表示所计算的当前致动器播放的参数与致动器播放的预定参考参数进行比较; 并且如果超过参考参数则发送警告消息; 基于所测量的补偿时间的多项式函数来计算表示当前致动器游隙的参数。 多项式函数的多项式阶数对应于不同燃料压力下执行器的测量补偿次数。