DME FUEL FEED DEVICE OF DIESEL ENGINE - BOSCH AUTOMOTIVE SYSTEMS CORP

Title:

DME FUEL FEED DEVICE OF DIESEL ENGINE

Document Type and Number:

WIPO Patent Application WO/2003/074862

Kind Code:

A1

Abstract:

A DME fuel feed device of a diesel engine capable of shortening a time for collecting DME fuel in an injection system into a fuel tank after the diesel engine is stopped, wherein, in the state of no injection, a three-way solenoid valve (71) is controlled to OFF to form a communication passage in a direction shown by an arrow B and a two-way solenoid valve (72) is controlled to ON, the DME fuel fed from a feed pump (5) is sent to an aspirator (7) and, after passing from the inlet (7a) to the outlet (7b) thereof, returned to the fuel tank (4) so that the DME fuel can be circulated through the aspirator, a gaseous phase pressure sending pipe open/close solenoid valve (75) is controlled to ON to open the valve to bring into a communicated state a gaseous phase pressure sending pipe (73) connecting gaseous phase (4a) in the fuel tank (4) to the inlet side of an oil reserving chamber (11), and the DME fuel in liquid state remaining in the oil reserving chamber (11), an overflow fuel pipe (8), and an overflow fuel pipe (9) is force-fed to a suction port (7c) by the high pressure of the gaseous phase (4a).

Inventors:

NOZAKI SHINYA (JP)
NODA TOSHIFUMI (JP)
USHIYAMA DAIJO (JP)
ISHIKAWA TERUAKI (JP)
HAYASAKA YUKIHIRO (JP)

Application Number:

PCT/JP2003/002562

Publication Date:

September 12, 2003

Filing Date:

March 05, 2003

Export Citation:

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Assignee:

BOSCH AUTOMOTIVE SYSTEMS CORP (JP)
NOZAKI SHINYA (JP)
NODA TOSHIFUMI (JP)
USHIYAMA DAIJO (JP)
ISHIKAWA TERUAKI (JP)
HAYASAKA YUKIHIRO (JP)

International Classes:

F02D33/00; F02M37/00; F02M59/26; F02M59/44; F02M59/48; F02M53/00; F02M55/00; (IPC1-7): F02M37/00; F02M63/00; F02M55/00

Foreign References:

JPH036045U	1991-01-22
JPH11257187A	1999-09-21
JPS56546A	1981-01-07
JPH11107871A	1999-04-20
JPH11107872A	1999-04-20
JPH10281030A	1998-10-20

Other References: