Upshift logic

Details Upshift logic Upshift logic

1988-07-25

1990-08-07

Gruber, Felix D.

Boots, shoes, and leggings

74866, B60K 4108, B60K 4118

Patent

active

049473310

ABSTRACT:
An improved control system and method for an automatic/semi-automatic transmission system (10) including an automatic change gear transmission (12) driven by a throttle (26) controlled engine (14) is provided. The control system includes a processing unit (42) for receiving inputs indicating at least throttle positon (THL) and vehicle speed (OS) and for determining vehicle acceleration (dOS/dt) and for processing these inputs in accordance with a program or logic rules to determine the selected engaged gear ratio and for issuing command signals to a transmission shifting mechanism (34). The processing unit operates according logic rules so that the control system will execute skip upshifts upon sensing certain predetermined conditions.

REFERENCES:
patent: 4081065 (1978-03-01), Smyth et al.
patent: 4361060 (1982-11-01), Smyth
patent: 4425620 (1984-01-01), Batcheller et al.
patent: 4569255 (1986-02-01), Holmes
patent: 4576065 (1986-03-01), Speranza et al.
patent: 4595986 (1986-06-01), Daubenspeck et al.
patent: 4648290 (1987-03-01), Dunkley et al.
patent: 4784019 (1988-11-01), Morscheck
patent: 4823643 (1989-04-01), Koshizawa

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