公开(公告)号：EP1223310A1

公开(公告)日：2002-07-17

申请号：EP02000684.7

申请日：2002-01-11

Applicant: TECUMSEH PRODUCTS COMPANY

Inventor： Mason, John R. ,  Koblic, David A. ,  Janeczko, Jason

IPC: F01L1/14

CPC classification number: F01L1/255 ,  F01L1/146 ,  F01L1/183 ,  F01L1/245

Abstract: A lifter assembly (40a) for an internal combustion engine (10), including an elongate sleeve (46) having an upper radial wall portion (48) provided with oil feed (60) and oil bleed (62) holes therethrough, through which oil respectively enters and exits the lifter assembly. An elongate, hollow lifter body (68) is reciprocatingly disposed within the sleeve, the lifter body being closed at one end (70) thereof. A plunger (72) is reciprocatingly disposed within the lifter body and has an internal cavity (74), a low pressure oil reservoir (76) at least partially defined by the plunger internal cavity, the low pressure oil reservoir in at least periodic fluid communication with the oil feed hole, whereby oil from the oil feed hole is received into the low pressure oil reservoir. A high pressure oil reservoir (78) is at least partially defined by the plunger and the lifter body closed end, and is in one-way fluid communication with the low pressure oil reservoir, whereby oil is received into the high pressure reservoir from the low pressure oil reservoir. A cap (100) is reciprocatingly disposed within the sleeve and engaged with the plunger. First (110) and second (112) seals are located between an outer circumferential surface of the lifter body and an outer circumferential surface of the cap, respectively, and an inner circumferential surface of the sleeve, the seals respectively located between the oil feed hole and one end (52) of the sleeve, and the oil bleed hole and the other end (54) of the sleeve, whereby oil is precluded from exiting the lifter assembly through the ends of the sleeve.

Abstract translation: 一种用于内燃机（10）的升降机组件（40a），其包括具有设置有进油口（60）的上部径向壁部分（48）和通过其的排油孔（62）的细长套筒（46） 分别进出升降组件。 一个细长的中空升降机体（68）往复地设置在套筒内，升降机主体在其一端（70）处封闭。 柱塞（72）往复地设置在升降机体内，并具有内腔（74），至少部分地由柱塞内腔限定的低压储油器（76），至少周期性流体连通中的低压储油器 具有供油孔，由此来自供油孔的油被接收到低压油箱中。 高压储油器（78）至少部分地由柱塞和升降器主体封闭端限定，并且与低压储油器单向流体连通，由此油从低压储罐 压力油藏。 盖（100）往复地布置在套筒内并与柱塞接合。 第一（110）和第二（112）密封件分别位于提升机体的外周表面和盖的外周表面之间，以及套筒的内周表面，分别位于供油孔 和套筒的一端（52），以及排油孔和套筒的另一端（54），由此油不能通过套筒的端部离开升降机组件。