Downshift timing and engine brake control for automatic transmis

Details Downshift timing and engine brake control for automatic transmis Downshift timing and engine brake control for automatic transmis

1986-09-09

1988-06-28

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

74867, 3644241, B60K 4106

Patent

active

047531347

ABSTRACT:
A control system for an automatic transmission comprises an engine brake control valve, a downshift timing valve, an electro-hydraulic transducer operable in an engine brake control first mode or a downshift timing control second mode, a shuttle valve fluidly disposed between the electro-hydraulic transducer and the engine brake control valve and the downshift timing valve, and a controller for the electro-hydraulic transducer. The electro-hydraulic transducer is controlled to be maintained in ON state thereof during engine load range where the shuttle valve is designed to shift from one to the other position, thereby to render the engine brake inoperable even though the timing control may be carried out if the shuttle valve assumes the appropriate position.

REFERENCES:
patent: 3623382 (1971-11-01), Chang
patent: 3726157 (1973-04-01), Marumo
patent: 3744347 (1973-07-01), Kubo et al.
patent: 4291594 (1981-09-01), Baudoin
patent: 4319501 (1982-03-01), Sugimoto
patent: 4350234 (1982-09-01), Sugo et al.
patent: 4476747 (1984-10-01), Kawamoto
patent: 4607542 (1986-08-01), Sugano
patent: 4617841 (1986-10-01), Sugano
"Automatic Transaxle RN4F02A Type, RL4F02A Type Service Manual" (A261C06) by Nissan Motor Company Limited, 1984.

Affiliated with

Also associated with

Rating

Downshift timing and engine brake control for automatic transmis does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Downshift timing and engine brake control for automatic transmis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downshift timing and engine brake control for automatic transmis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1909429