Fuel estimating device

Details Fuel estimating device Fuel estimating device

2008-05-15

2009-12-08

Huynh, Hai H (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S110000, C123S436000, C123S431000

Reexamination Certificate

active

07630824

ABSTRACT:
A requested injection time InjT necessary for a fuel injector to inject a fuel per one combustion cycle is computed in response to a position of an accelerator manipulated by a driver, an injectable time InjMax per one combustion cycle is computed on the basis of an engine speed, and whether or not the requested injection time InjT is larger than the injectable time InjMax is determined. Then, when it is positively determined that the requested injection time InjT is larger than the injectable time InjMax, it is estimated that an alternate fuel (for example an alcohol fuel) other than a regular fuel (for example gasoline) is blended with a fuel in a fuel tank.

REFERENCES:
patent: 4945881 (1990-08-01), Gonze et al.
patent: 7401591 (2008-07-01), Yamaguchi et al.
patent: 7480557 (2009-01-01), Yamaguchi et al.
patent: 2008/0312805 (2008-12-01), Hirata
patent: 2009/0143959 (2009-06-01), Yamaoka et al.
patent: 2007-120414 (2007-05-01), None

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