The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2012
Filed:
May. 14, 2008
Rie Osaki, Anjo, JP;
Naoyo Kato, Ama-gun, JP;
Noriyasu Amano, Gamagori, JP;
Satoshi Taniguchi, Numazu, JP;
Kaori Yoshida, Susono, JP;
Yukihiro Tsukasaki, Susono, JP;
Rie Osaki, Anjo, JP;
Naoyo Kato, Ama-gun, JP;
Noriyasu Amano, Gamagori, JP;
Satoshi Taniguchi, Numazu, JP;
Kaori Yoshida, Susono, JP;
Yukihiro Tsukasaki, Susono, JP;
Nippon Soken, Inc., Aichi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
It is an object of the present invention to provide a fuel property detection apparatus that excels in durability and reliability and is capable of accurately detecting the biofuel concentration in a mixture of hydrocarbon fuel and biofuel with a compact and simple configuration. A fuel property sensorincludes a light-emitting deviceand a light-receiving device, which detect the optical transmittance of a fuel in a fuel path; and a light-emitting deviceand a position sensitive device, which detect the refractive index of the fuel. As the optical transmittance correlates with the RME concentration of the fuel, the RME concentration can be calculated from the detected optical transmittance. As the refractive index correlates with the cetane number of the fuel, the cetane number can be calculated from the detected refractive index. The optical transmittance is detected through the use of light within a wavelength range of 640 nm to 680 nm.