Shift control for automatic transmission in accordance with rota

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477121, 477158, B60K 4104

Patent

active

057711712

ABSTRACT:
A system for carrying out shift control of an automatic transmission in accordance with a rotational speed of an input shaft thereof during shifting comprises calculating an input torque coefficient in accordance with torque of the engine detected and a rate of time change calculated, converting the input torque coefficient calculated into a velocity ratio, calculating a rotational speed of the input shaft of the automatic transmission in accordance with the rotational speed of the engine detected and the velocity ratio, and carrying out torque-down of the engine in accordance with the rotational speed of the input shaft calculated.

REFERENCES:
patent: 3693479 (1972-09-01), Toyoda et al.
patent: 4691285 (1987-09-01), Takeda
patent: 4984988 (1991-01-01), Mizushina et al.
patent: 5035160 (1991-07-01), Morita
patent: 5047936 (1991-09-01), Ishii et al.
patent: 5072631 (1991-12-01), Fujimoto et al.
M. Schwab und A. Muller, "Der Motoreingriff--ein neues Element der elektronischen Getriebesteuerung", In Bosch Technische Berichte 7, (1983) 4, pp. 166-174 (No translation).
Manual for New Model Cars No. Y32-1, Nissan Motor Co., Ltd., Jun. 1991, pp. C-11--C-13.

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