发明名称 |
Fuel pump driving structure and internal combustion engine |
摘要 |
The fuel pump driving structure includes a camshaft and a pump cam member. The camshaft is rotatably supported at an end by a cylinder head. The pump cam member has a fitting hole into which the end of the camshaft is press fitted, and is operatively coupled to a high-pressure fuel pump. The pump cam member includes a pump cam section and a first contact section. The pump cam section has a first lift portion operating the high-pressure fuel pump, and a base circular portion that does not operate the high-pressure fuel pump. The first contact section is in a position offset from a position of the first lift portion with respect to a circumferential direction and contacting a portion of the camshaft in an axial direction at a position radially outward of an external circumferential surface of the one end of the camshaft. |
申请公布号 |
US8887694(B2) |
申请公布日期 |
2014.11.18 |
申请号 |
US201114241486 |
申请日期 |
2011.09.09 |
申请人 |
Aichi Machine Industry Co., Ltd. |
发明人 |
Hada Masatoshi;Kinoshita Naonori;Yamazaki Miyuki;Mitsuhashi Tsuneo |
分类号 |
F02M37/06;F02M39/02;F02F1/24;F02F7/00;F01L1/46;F02M59/44;F04C29/00;F01L1/053 |
主分类号 |
F02M37/06 |
代理机构 |
Global IP Counselors |
代理人 |
Global IP Counselors |
主权项 |
1. A fuel pump driving structure configured to drive a high-pressure fuel pump of an internal combustion engine, the fuel pump driving structure comprising:
a camshaft configured and arranged to be rotatably supported at an end by a cylinder head of the internal combustion engine; and a pump cam member having an internal circumference surface defining a fitting hole into which the end of the camshaft is press fitted, and configured to be operatively coupled to the high-pressure fuel pump to drive the high-pressure fuel pump, the pump cam member including a pump cam section having a first lift portion configured to operate the high-pressure fuel pump, and a base circular portion configured so as to not operate the high-pressure fuel pump, and a first contact section arranged in a position offset from a position of the first lift portion with respect to a circumferential direction, and contacting a portion of the camshaft in an axial direction of the camshaft at a position radially outward of an external circumferential surface of the one end of the camshaft so as to reduce bending of the camshaft where the pump cam member is mounted. |
地址 |
Nagoya-shi JP |