公开(公告)号：WO2017091455A1

公开(公告)日：2017-06-01

申请号：PCT/US2016/062670

申请日：2016-11-18

Applicant: FCA US LLC

Inventor： BUCKNELL, John R. ,  ISMAIL, Aymail ,  BAYER, Ethan E. ,  MAVALANKAR, Drushan

IPC: F02D13/02 ,  F01L1/26 ,  F01L1/344 ,  F01L1/18 ,  F02D41/00

CPC classification number: F02D13/02 ,  F01L1/18 ,  F01L1/22 ,  F01L1/344 ,  F01L13/0036 ,  F01L2001/186 ,  F01L2800/10 ,  F01L2800/14 ,  F01L2820/043 ,  F02D13/0207 ,  F02D2041/001 ,  F02D2041/002 ,  F02D2200/0406 ,  F02D2200/0411 ,  F02D2250/21 ,  F02D2250/22 ,  F02M26/48 ,  Y02T10/18

Abstract: A control technique for an engine having a two-step variable valve lift system includes a controller receiving a pressure in an intake manifold of the engine from a manifold absolute pressure (MAP) sensor and a position of an EGR valve of the engine from an exhaust gas recirculation (EGR) sensor. In response to the controller detecting an upcoming HL-to-LL valve state transition, a set of airflow actuators of the engine is controlled, based on the intake manifold pressure and the EGR valve position, to generate a first torque reserve. In response to generating the first torque reserve, the controller then commands the HL-to-LL transition and depletion of the first torque reserve during the HL-to-LL transition to mitigate torque disturbance associated with this transition.

Abstract translation: 用于具有两级可变气门升程系统的发动机的控制技术包括控制器，该控制器从歧管绝对压力（MAP）传感器接收发动机进气歧管中的压力， 来自排气再循环（EGR）传感器的发动机的EGR阀。 响应于控制器检测到即将到来的HL至LL阀门状态转变，基于进气歧管压力和EGR阀门位置来控制发动机的一组气流​​致动器以产生第一转矩储备。 响应于产生第一转矩储备，控制器然后在HL到LL转换期间命令HL到LL转换和第一转矩储备的耗尽以减轻与该转换相关联的转矩扰动。