Title:
PLUNGER DRIVE STRUCTURE FOR FUEL PUMP AND NEEDLE ROLLER BEARING FOR SUPPORTING PLUNGER FOR FUEL PUMP
Document Type and Number:
Japanese Patent JP2007051575
Kind Code:
A
Abstract:
To provide a plunger drive structure for a fuel pump which reduces torque loss during rotation and has high lubricity.
A fuel pump 11 is equipped with a rotary shaft 12 having an eccentric part 12a, a needle roller bearing 13 for supporting the eccentric part 12a of the rotary shaft 12, a tappet 14 radially arranged by being abutted to an outer race of the needle roller bearing 13 and a plunger 15 arranged on the tappet 14 and reciprocating through rotation of the rotary shaft 12.
Inventors:
KATAOKA MASAHIKO
Application Number:
JP2005236584A
Publication Date:
March 01, 2007
Filing Date:
August 17, 2005
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F04B9/04; F04B1/04; F04B1/047; F04B1/053; F16C19/46; F16C33/58; F16H25/14; F16H53/06
Attorney, Agent or Firm:
Hidehiko Ito
Morishita Hachiro
Hiroyuki Yoshida
Morishita Hachiro
Hiroyuki Yoshida