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:
Mar. 23, 1999
Filed:
Feb. 19, 1998
Applicant:
Inventors:
Hajime Uto, Kawachi, JP;
Toshiaki Ichitani, Utunomiya, JP;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60Q / ;
U.S. Cl.
CPC ...
3404502 ; 340614 ; 73113 ;
Abstract
A residual fuel amount-estimating system for a fuel tank of an internal combustion engine installed in a vehicle. A pressure sensor detects the pressure within the fuel tank. The interior of the fuel tank is negatively pressurized, and a rate of change in the pressure within the fuel tank during negative pressurization is detected. A residual fuel amount within the fuel tank is estimated, based on the detected rate of change in the pressure within the fuel tank.