Title:
【発明の名称】2部品構成のポンププランジャを用いる高圧ディーゼル燃料ポンプ
Document Type and Number:
Japanese Patent JPH10506162
Kind Code:
A
Abstract:
A fuel injector including a housing having a fuel passage connectable at one end to a source of fuel for the ingress or egress of fuel at a suitable supply pressure, a fuel supply chamber in flow communication with the fuel passage, a pump cylinder in the housing, an externally actuated plunger reciprocable in the pump cylinder at a predetermined clearance therewith and defining at one end thereof a pump chamber open at one end for the discharge of fuel during a pump stroke and for fuel intake during a suction stroke of said plunger. The plunger includes a piston and a push rod concentrically located within the piston along an axis thereof, and fixed thereto to preclude relative axial movement along such axis. The push rod includes a head portion extending beyond one end of the piston to be engaged by a plunger actuator to cause a pumping stroke under force, and a stem portion in radial clearance with the piston and engaging the piston at the other end of the piston whereby the force of the plunger actuator is transferred by the push rod directly and only to the other end of the piston, thus precluding placing the said one end of the piston under compression and thereby maintaining the predetermined clearance between the plunger and the housing.
Inventors:
Van arsberg michael
Application Number:
JP50663496A
Publication Date:
June 16, 1998
Filing Date:
July 28, 1995
Export Citation:
Assignee:
Diesel Technology Company
International Classes:
F02M57/02; F02M59/36; F02M59/44; F02B3/06; (IPC1-7): F02M57/02; F02M57/02
Attorney, Agent or Firm:
Minoru Nakamura (6 outside)