公开(公告)号：US20160108771A1

公开(公告)日：2016-04-21

申请号：US14884061

申请日：2015-10-15

Applicant: DENSO CORPORATION

Inventor： Shuhei OE ,  Shota TODA ,  Yoshiki ENDO ,  Yuu YOKOYAMA ,  Toshiki FUJIYOSHI

IPC: F01L1/344 ,  F02D13/02

CPC classification number: F01L1/3442 ,  F01L2001/34456 ,  F02D13/0238 ,  Y02T10/18

Abstract: When a lock demand of a camshaft phase occurs, a control mode of a hydraulic control valve s switched to a locking mode after an actual camshaft phase is controlled to a lock phase, and a lock pin (an inner pin and an outer pin) is moved to a lock position. Thus, the camshaft phase is locked at the lock phase, and a timing advance chamber and a timing retard chamber are made a state of communicating with each other through a back space. In this state, a locking time filling control is executed. In the locking time filling control, the control mode of a hydraulic control valve is switched to a filling mode, the hydraulic oil is supplied to a timing advance chamber, both of the timing advance chamber and the timing retard chamber are filled with the hydraulic oil, the back space is filled with the hydraulic oil, and thereafter the control mode of the hydraulic control valve is returned to the locking mode.

Abstract translation: 当发生凸轮轴相位的锁定需求时，在实际凸轮轴相位被切换到锁定模式的液压控制阀s的控制模式被控制到锁定相位，并且锁定销（内部销和外部销）是 移动到锁定位置。 因此，凸轮轴相锁定在锁定相位，并且定时提前室和定时延迟室被制成通过后部空间相互连通的状态。 在该状态下，执行锁定时间填充控制。 在锁定时间填充控制中，将液压控制阀的控制模式切换为填充模式，将液压油供给到定时提前室，定时提前室和定时延迟室都用液压油 后部空间充满液压油，此后液压控制阀的控制模式返回到锁定模式。