Select shock attenuation arrangement for an automatic automotive

Details Select shock attenuation arrangement for an automatic automotive Select shock attenuation arrangement for an automatic automotive

1989-12-01

1992-04-28

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

3644241, F16H 5968, F16H 5924

Patent

active

051077230

ABSTRACT:
In order to reduce select shock the engine load is monitored and if the level is above a predetermined at the time the shift lever is moved from a range wherein torque is not transmitted through the transmission (e.g. neutral or park ranges) to a range wherein torque transmission is enabled (viz., D, I, II, R), the level of hydraulic line pressure is reduced by a predetermined amount for a predetermined period to temporarily reduce the engagement force.

REFERENCES:
patent: 4308764 (1982-01-01), Kawamoto
patent: 4519273 (1985-05-01), Shimizu et al.
patent: 4730521 (1988-03-01), Hayasaki et al.
patent: 4732246 (1988-03-01), Tateno et al.
patent: 4836055 (1989-06-01), Suzuki
patent: 4845618 (1989-07-01), Narita
patent: 4873637 (1989-10-01), Braun
patent: 4890515 (1990-01-01), Taniguchi et al.
patent: 4939957 (1990-07-01), Asano et al.
patent: 4949595 (1990-08-01), Shimanaka
patent: 4981053 (1991-01-01), Yamaguchi

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