Global Patent Index - EP 2535584 A1

EP 2535584 A1 20121219 - Pump assembly

Title (en)

Pump assembly

Title (de)

Pumpenanordnung

Title (fr)

Ensemble de pompe

Publication

EP 2535584 A1 20121219 (EN)

Application

EP 11169953 A 20110615

Priority

EP 11169953 A 20110615

Abstract (en)

A pump assembly suitable for use in a fuel injection system is disclosed. The pump assembly comprises at least one high-pressure pumping head having an associated pumping element; a housing (124), a chamber (130) for lubricating fluid, a drive shaft bearing (126) received in the housing; and a drive shaft (120) received in the bearing (126), the drive shaft (120) being rotatable to cause reciprocal pumping movement of the or each pumping element. The drive shaft (120) is arranged to move in reciprocal linear movement in a first direction and in a second, opposite direction along a drive shaft axis (A) during rotation of the drive shaft (120) in use, and the pump assembly further comprises an auxiliary pumping chamber (160) arranged to draw lubricating fluid from the lubricating fluid chamber (130) during axial movement of the drive shaft (120) in the first direction, and to deliver lubricating fluid towards the bearing (126) during linear movement of the drive shaft (120) in the second direction.

IPC 8 full level

F04B 1/04 (2006.01)

CPC (source: EP)

F04B 1/0404 (2013.01); F04B 1/0426 (2013.01)

Citation (applicant)

EP 2050952 A1 20090422 - DELPHI TECH INC [US]

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2535584 A1 20121219

DOCDB simple family (application)

EP 11169953 A 20110615