Method and apparatus for estimating engine torque

Details Method and apparatus for estimating engine torque Method and apparatus for estimating engine torque

2005-04-05

2005-04-05

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S054000, C123S325000

Reexamination Certificate

active

06876918

ABSTRACT:
An engine torque estimating apparatus is connected to an automatic transmission and an internal combustion engine. A control unit of the engine torque estimating apparatus is arranged to stop a fuel supply to the engine when a predetermined engine operating condition is satisfied, to estimate a torque generated by the engine using a first map which has defined the torque according to an engine speed and an intake air flow of the engine when the fuel supply to the engine is executed, and to estimate the torque using a second map which has defined the torque according to the engine speed when the fuel supply to the engine is stopped.

REFERENCES:
patent: 4508075 (1985-04-01), Takao et al.
patent: 5662549 (1997-09-01), Kondo et al.
patent: 5934879 (1999-08-01), Konno et al.
patent: 6009988 (2000-01-01), Saito et al.
patent: 2-118260 (1990-05-01), None
patent: 4-236852 (1992-08-01), None
patent: 9-100902 (1997-04-01), None

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