Title:
FUEL SUPPLY UNIT FOR LOW BOILING POINT FUEL
Document Type and Number:
WIPO Patent Application WO/2007/049781
Kind Code:
A1
Abstract:
In an engine fuel supply unit with a plurality of fuel tanks for storing low boiling point
fuel such as DME, a fuel tank delivering fuel can be switched automatically and
mixing of fuel vapor at the switching is prevented. A solenoid valve (10A) and
the like are arranged in the fuel feed piping (6A, 6B) and fuel return piping (8A,
8B) connected with fuel tanks (4A, 4B) for low boiling point fuel, and a fuel tank
to be used is selected by opening/closing the solenoid valves through a controller (14).
Pipes (12A, 12B) for coupling the fuel feed piping with the fuel tank and pressure
regulation valves (13A, 13B) interposed in the coupling pipes are provided. When
the fuel tank is switched, a pump in the fuel tank is operated for a predetermined period
before the solenoid valve is opened thus pressurizing the fuel. Consequently, low
boiling point fuel is liquefied surely and malfunction due to mixing of vapor can
be prevented in the fuel supply unit.
Inventors:
TOKUMARU TAKESHI (JP)
SETO TAKESHI (JP)
SETO TAKESHI (JP)
Application Number:
PCT/JP2006/321593
Publication Date:
May 03, 2007
Filing Date:
October 24, 2006
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
TOKUMARU TAKESHI (JP)
SETO TAKESHI (JP)
TOKUMARU TAKESHI (JP)
SETO TAKESHI (JP)
International Classes:
F02M37/08; F02M37/00
Foreign References:
| JP2002195121A | 2002-07-10 | |||
| JP2001349256A | 2001-12-21 | |||
| JPH06173834A | 1994-06-21 | |||
| JPH1054319A | 1998-02-24 | |||
| JPH1136990A | 1999-02-09 | |||
| JPH07127542A | 1995-05-16 | |||
| JP2005098260A | 2005-04-14 |
Attorney, Agent or Firm:
ONO, Hisazumi et al. (1-21 Nishi-shimbashi 1-chom, Minato-ku Tokyo, JP)
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