Control of downshift to engine brake running range

Details Control of downshift to engine brake running range Control of downshift to engine brake running range

1990-05-18

1992-03-24

Herrmann, Allan D.

Machine element or mechanism

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

Preselected indexed position

74867, 74874, B60K 4106

Patent

active

050977237

ABSTRACT:
In an automatic transmission including a main gearing with an overrunning clutch and a complementary one-way clutch and an auxiliary gearing with a reduction brake and a complementary one-way clutch, the reduction brake is engaged before the overrunning clutch is engaged upon selecting an engine brake running range, namely a III range or II range.

REFERENCES:
patent: 4188839 (1980-02-01), Kubo et al.
patent: 4334441 (1982-06-01), Iwanaga et al.
patent: 4709496 (1987-12-01), Boda et al.
patent: 4730519 (1988-03-01), Nakamura et al.
patent: 4730521 (1988-03-01), Hayasaki et al.
patent: 4753134 (1988-06-01), Hayasaki
patent: 4770066 (1988-09-01), Hayasaki et al.
patent: 4836057 (1989-06-01), Asayama et al.
Service Manual "Toyota Carina" issued by Toyota Motor Company, in Aug. 1985, pp. 4-12 to 4-31.
"Nissan Full-Range Electronically Controlled Automatic Transmission Of The RE4R01A Type (A261C07)" published by Nissan Motor Co., Ltd. in 1987.

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