Shift enable control method/system

Details Shift enable control method/system Shift enable control method/system

1992-07-06

1993-12-28

Wright, Dirk

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

3644241, F16H 5914

Patent

active

052729397

ABSTRACT:
A control system/method for an at least partially automated mechanical transmission system (10) is provided for determining if selected upshifts into a target gear ratio are acceptable (208) or not acceptable (210) under current vehicle operating conditions and for prohibiting the initiation of not acceptable selected upshifts. An upshift is deemed acceptable if the available drivewheel torque (206) in the target ratio is sufficient to maintain at least a minimum acceptable vehicle acceleration (A.sub.0) after the upshift under current vehicle operating conditions.

REFERENCES:
patent: 4361060 (1982-11-01), Smyth
patent: 4595986 (1986-06-01), Daubenspeck et al.
patent: 4648290 (1987-03-01), Dunkley et al.
patent: 5053959 (1991-10-01), Genise
patent: 5053961 (1991-10-01), Genise
patent: 5053962 (1991-10-01), Genise
patent: 5089965 (1992-02-01), Braun
patent: 5133229 (1992-07-01), Asada et al.
patent: 5172609 (1992-12-01), Nitz

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