Volpe and Koenig, P.C.
High pressure fuel supply pump
A high pressure fuel supply pump includes: an electromagnetic suction valve that adjusts an amount of fuel sucked into a pressuring chamber; a discharge valve that discharges the fuel from the pressuring chamber; and a plunger that makes a reciprocating motion in the pressuring chamber. The electromagnetic suction valve includes an electromagnetic coil, a suction valve, and a movable portion that is able to close the suction valve by a magnetic force when the electromagnetic coil is energized. The movable portion includes an anchor that is driven to close the suction valve by the magnetic force and stops at a fixed member, and a rod that is driven with the anchor and is able to move even after the anchor stops. The electromagnetic suction valve includes a first and second springs that bias the suction valve in closed and open direction, respectively, and a third spring in the rod.
HITACHI AUTOMOTIVE SYSTEMS, LTD.
F F F F F F F F F F
F04B F04B F02M F04B F02M F04B F02M F02M F02M F02M
additional additional inventional inventional inventional inventional inventional additional inventional inventional
Masayuki Minoru Atsushi Hiroyuki Satoshi Kenichirou Masamichi
Suganami Hashida Hohkita Yamada Usui Tokuo Yagai