公开(公告)号：US20170342951A1

公开(公告)日：2017-11-30

申请号：US15191543

申请日：2016-06-24

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na XU ,  Haijun REN

IPC: F02M59/10 ,  F01L1/46

CPC classification number: F02M59/102 ,  F01L1/14 ,  F01L1/245 ,  F01L1/46 ,  F01L2105/00 ,  F01L2105/02 ,  F01L2109/00 ,  F04B1/0426

Abstract: A high-pressure oil pump roller tappet, used for automobile fuel injection system, mounted between the driving cam and the tappet. The roller tappet includes a shell, a holder, a roller, and a pin. Planes A are arranged on both sides of the seam on lateral sides of the shell. Holes I are arranged at symmetrical positions on two planes A. Holes II are arranged on symmetrical positions on vertical plates. The roller is located in the middle of the pin. Welding has no requirement on the thickness of the plate. The weight can be controlled effectively, reducing inertia force, friction, and wear, improving engine efficiency. The shell and holder are designed as being separate, ensuring that the shell subjects to lateral force as little as possible when the holder subjects to a force, such that the shell is less likely to vibrate. Thus, the shell avoids the abrasion.

公开(公告)号：US20190093522A1

公开(公告)日：2019-03-28

申请号：US15795253

申请日：2017-10-27

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na XU ,  Haijun REN

IPC: F01L1/18

Abstract: This invention provides a novel lightweight rocker arm frame and a forming process of a curved crown part thereof, including two sidewalls and two bottom plates. The two sidewalls are connected through the bottom plates respectively located at two ends. A ball socket protruded upwards and an, oil hole are arranged at a bottom plate at one end, and a bottom surface of a bottom plate at the other end is a bearing surface. A pin shaft hole is formed in the middle of each sidewall without the bottom plates. According to the rocker arm frame disclosed by the invention, the strength of the structure can be ensured while light weight is realized. The production efficiency of the rocker arm frame is effectively improved, and the structure of the valve rod supporting position is improved.

公开(公告)号：US20170342867A1

公开(公告)日：2017-11-30

申请号：US15542391

申请日：2016-01-05

Applicant: HANGZHOU XZB TECH CO., LTD

Inventor： Na XU

IPC: F01L1/245

CPC classification number: F01L1/245 ,  F01L1/24 ,  F01L1/2405 ,  F01L2103/00

Abstract: A columnar-type hydraulic tappet, provided with a housing, a plunger moving axially with respect to the housing being mounted in an inner cavity of the housing, a high pressure cavity used for a hydraulic medium extending between a lower end surface of the plunger and a lower side of the housing, a first ring groove being arranged below a head portion of the plunger, a second ring groove being arranged at a central portion of the plunger, a plunger central wall being between the first ring groove and the second ring groove, the second ring groove being a concave wide ring groove, wherein at least one plunger oil inlet hole being arranged on the plunger concave wide ring groove or the plunger central wall, a bottom portion edge of the plunger oil inlet hole containing flanging facing towards an inner cavity of the plunger.