METHOD FOR DRIVING FUEL INJECTION PUMP

Title:

METHOD FOR DRIVING FUEL INJECTION PUMP

Document Type and Number:

WIPO Patent Application WO/2003/046363

Kind Code:

A1

Abstract:

An electromagnetic driving fuel injection pump (20) for releasing fuel toward a return path (5) in the initial region of pressure feed process by a plunger (21) and pressure feeding fuel toward an injection port (33) in the late region of pressure feed process, wherein pulse conduction not leading to fuel injection is performed for a coil (23) such that the plunger (21) reciprocates in the initial region when an engine (2) is idling or stopped immediately after heavy load operation and then restarted. Since vapor is discharged efficiently, flow rate of recirculating fuel is increased to accelerate cooling action and since generation of vapor is suppressed, starting performance or restarting performance is enhanced. Furthermore, the volume of vapor being discharged by a fuel injection pump is increased while stabilizing the fuel injection and enhancing the starting performance.

Inventors:

YAMAZAKI SHIGERU (JP)
HASHIMOTO SHOGO (JP)

Application Number:

PCT/JP2002/011424

Publication Date:

June 05, 2003

Filing Date:

November 01, 2002

Export Citation:

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Assignee:

MIKUNI KOGYO KK (JP)
YAMAZAKI SHIGERU (JP)
HASHIMOTO SHOGO (JP)

International Classes:

F02D41/06; F02D41/30; F02M37/08; F02M37/20; F02M51/04; F02M57/02; F02M69/04; F02M69/08; F02D41/08; F02D41/40; F02M61/08; (IPC1-7): F02M51/00; F02M55/00; F02M37/08; F02M37/20

Foreign References:

JP2001221137A	2001-08-17
JPH0419353A	1992-01-23
JPH03264766A	1991-11-26
JPH0281947A	1990-03-22

Other References: