Rotation angle sensing device

Details Rotation angle sensing device Rotation angle sensing device

2007-10-23

2007-10-23

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S436000

Reexamination Certificate

active

11508280

ABSTRACT:
A rotation angle sensing device calculates an average value of calculation values of time necessary for rotation of each one of sections provided by equally dividing one rotation of a crankshaft. The device calculates an average value of the average values of the entire sections to calculate an entire section average value. The device calculates ratios of the average values of the respective sections to the entire section average value. The device eliminates an influence of rotation fluctuation of the crankshaft from the ratios by using reference ratios, which are calculated as ratios of the average values of the respective sections to the entire section average value in the case where there is no structural error. Thus, the device calculates learning values for compensating for the structural error.

REFERENCES:
patent: 5428991 (1995-07-01), Klenk et al.
patent: 5864775 (1999-01-01), Bradshaw et al.
patent: 6014599 (2000-01-01), Inoue et al.
patent: 10-122031 (1999-05-01), None
patent: 11-247707 (1999-09-01), None

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