Method and system of controlling shift of transmission speed rat

Details Method and system of controlling shift of transmission speed rat Method and system of controlling shift of transmission speed rat

1991-06-04

1993-08-10

Lorence, Richard M.

Machine element or mechanism

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

Preselected indexed position

3644241, B60K 4106

Patent

active

052338886

ABSTRACT:
In a gas turbine engine vehicle having a two-shaft type gas turbine engine including a gas generator constituted by a compressor and a compressor turbine arranged coaxially with the compressor, a combustion chamber, a variable nozzle, and a power turbine rotatable about a turbine shaft independently of a shaft of the compressor and the compressor turbine, a transmission speed ratio is shifted to a higher stage than the current transmission speed ratio when an engine acceleration requirement is greater than a predetermined value. As a result, a lowering of a vehicular acceleration characteristics due to a response lag in a variation of revolution speed at the compressor turbine can be prevented, and thus an enhanced acceleration and deceleration of the automotive vehicle is provided.

REFERENCES:
patent: 4947330 (1990-08-01), Hiramatsu
patent: 4947970 (1990-08-01), Miller et al.
patent: 5007147 (1991-04-01), Imai et al.
patent: 5025685 (1991-06-01), Kobayashi et al.
patent: 5040114 (1991-08-01), Ishikawa et al.
Preliminary Issuance of a Study Meeting held by the Scientific Body 881 P229-P232, Society of Automotive Engineers of Japan, Inc.

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