IN-TANK TUBE FOR AUTOMOBILE FUEL AND METHOD FOR PRODUCING THE SAME

WIPO Patent Application WO/2011/104927

A1

Disclosed is a single-layer in-tank tube (1) for automobile fuel which is installed inside a fuel tank (2) and is constructed so as to absorb displacement of the fuel tank (2) and vibration of a fuel pump (5). The in-tank tube (1) for automobile fuel is formed from a resin material, the primary component of which is high-density polyethylene (HDPE) having a specific gravity of 0.950 or higher, and the in-tank tube (1) has the below pressure resistance characteristic (X). Silicone oil as the pressurization medium is filled inside the in-tank tube which has been immersed for 168 hours at 80ºC in a test fluid (fuel (C):methanol = 85:15 (by volume)), both ends of the in-tank tube are blocked by a test pipe, and a pressure resistance test is performed at room temperature under a pressure elevation rate of 1.0 MPa/min. Pressure when the in-tank tube ruptures or the test pipe comes loose (bursting pressure) = 2.5 MPa or greater (X).

KATAYAMA KAZUTAKA (JP)
MIZUTANI KOJI (JP)
ASAI KEITA (JP)
KOBAYASHI TOKUNORI (JP)

PCT/JP2010/068635

September 01, 2011

October 21, 2010

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TOKAI RUBBER IND LTD (JP)
KATAYAMA KAZUTAKA (JP)
MIZUTANI KOJI (JP)
ASAI KEITA (JP)
KOBAYASHI TOKUNORI (JP)

B60K15/01; C08J7/00; F02M37/00; F16L11/11

JP2007285210A	2007-11-01
JP2002096016A	2002-04-02
JP2005514496A	2005-05-19
JP2004143448A	2004-05-20
JP2006205464A	2006-08-10
JPH08103986A	1996-04-23
JPH10279632A	1998-10-20

SAITOH Yukihiko (JP)
Masahiko Nishifuji (JP)

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