Title:
FUEL TANK MOUNTED, MOTORIZED HIGH PRESSURE GASOLINE PUMP
Document Type and Number:
WIPO Patent Application WO2002014677
Kind Code:
A9
Abstract:
A pump, for supplying high pressure fuel from a fuel tank to an engine via a common rail, includes a motor assembly (20) mounted on top of the fuel tank, a pump assembly (26) positioned within the fuel tank, and a support column (32) rotatably connecting the motor assembly to the pump assembly. A high pressure pump sub-assembly (46) includes a pump body (48) having a drive bore (50) and multiple plunger bores (60) formed therein. The external profile of a drive member (58) which is rotatable within the drive bore engages the radially inner end of pumping plungers (62) disposed in each of the plunger bores for a portion of each revolution to reciprocally move the plungers between radially inner and outer limit positions. Reciprocation towards the inner limit position induces a low pressure in the radially outer end of the plunger bore, thereby drawing fuel via the drive bore without the aid of a low pressure pump.
Inventors:
DJORDJEVIC ILIJA (US)
Application Number:
PCT/US2001/025212
Publication Date:
March 27, 2003
Filing Date:
August 13, 2001
Export Citation:
Assignee:
STANADYNE AUTOMOTIVE CORP (US)
DJORDJEVIC ILIJA (US)
DJORDJEVIC ILIJA (US)
International Classes:
F02M37/10; F04B1/053; F04B23/02; F04B23/10; F04B23/14; (IPC1-7): F02M37/10; F04B1/053
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