On-vehicle fuel property detection device

Details On-vehicle fuel property detection device On-vehicle fuel property detection device

2007-09-18

2010-12-28

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

For spectrographic investigation

C356S072000, C356S442000, C385S012000, C385S028000, C385S123000

Reexamination Certificate

active

07859662

ABSTRACT:
The detection device provides with an optical fiber composed of a core, a clad and a fiber jacket. A grating is applied to the core, and the fiber jacket located at the portion to which the grating is applied is removed so that the clad is in contact with a fuel fed to an injector of a vehicle. The detection device also provides with a light source for incidence of a light in a range of clad mode wavelength to the optical fiber, and a light-sensitive part for detecting an intensity of the light transmitting through the region to which the grating is applied. The optical fiber, light source and light-sensitive part are held in a conduit disposed in a fuel tank or between a fuel pump and the injector of the vehicle.

REFERENCES:
patent: 6872933 (2005-03-01), Wirthlin
patent: 2009/0034901 (2009-02-01), Takabayashi et al.
patent: 1-274042 (1989-11-01), None
patent: 2-236144 (1990-09-01), None

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