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| Hydraulic servo for friction coupling element of automatic transmission |
| It is an object of the present invention to provide a hydraulic servo for a friction element of and ... |
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| Transmission assembly for tractors |
| The present invention relates to a transmission assembly for tractors comprises: a front housing (1)... |
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| Multi-position ratchet mechanism |
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| Thread cutting tool |
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| Annular hole cutter |
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| Pneumatic conveying system with directional change of a gas/particulate material stream |
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Vehicular transmission
| Details |
Inventors: Tsubata, Yoshimichi; Kuroda, Shuji; Ohyama, Eiji; Suzuki, Eiji; Kita, Hiroyuki; Ishikawa, Tomoaki;
Assignee: Honda Giken Kogyo Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Green; Mary Ann
Assistant Examiner:
Attorney, Agent or Firm: Armstrong, Westerman, Hattori, McLeland & Naughton
A housing 2 for a vehicular transmission comprises a first room R1 which accommodates a continuous speed change mechanism and a second room R2 which accommodates a driving force transmission mechanism including a starting mechanism, a reduction train, a differential mechanism, a power supply mechanism for an oil pump, etc. In each room, inlet openings 72 through 74 for oil discharge passages are provided near and above both the sides of an oil pan 26 in the horizontal direction perpendicular to the input and output shafts of the continuous speed change mechanism, to return lubrication oil to the oil pan 26. Also, walls 61 through 65 are provided in the rooms to lead the lubrication oil into the respective inlet openings. In this construction, the lubrication oil returning from each room to the oil pan 26 is stabilized at each room and discharged to the oil pan 26, and thereby the lubrication oil achieves homogeneity in the oil pan 26. |
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DETAILED DESCRIPTION It is an object of the present invention to equalize the flow of lubrication oil in a continuously variable transmission in the direction which is perpendicular to the input and output shafts of a continuous speed change mechanism.
It is another object of the present invention to stabilize the flow of lubrication oil returning to an oil pan in a continuously variable transmission.
It is yet another object of the present invention to eliminate bubbling of lubrication oil in an oil pan in a continuously variable transmission.
In order to achieve these objectives, the present invention provides a vehicular transmission which comprises a continuous speed change mechanism, a driving force transmission mechanism, a housing and an oil pan.
The continuous speed change mechanism includes a drive pulley which is disposed on an input shaft, a driven pulley which is disposed on an output shaft, and a belt which is disposed around these pulleys for torque transmission.
The housing accommodates the continuous speed change mechanism and the driving force transmission mechanism which includes a starting mechanism (also, a reduction train, a differential mechanism, a power transmission mechanism for an oil pump, etc.
), and the oil pan is disposed at the lower part of the housing.
The housing comprises a first room which accommodates the continuous speed change mechanism and a second room which accommodates the driving force transmission mechanism including the starting mechanism, and the first and second rooms are positioned above the oil pan.
In the housing, at least one oil discharge passage is provided for each side of the oil pan in the horizontal direction perpendicular to the input and output shafts, and each oil discharge passage is positioned near and above the oil pan and used for returning the hydraulic oil (or lubrication oil) from each of the mechanisms in the first and second rooms to the oil pan.
Furthermore, at least one inlet opening is provided for each of the oil discharge passages, and these inlet openings are positioned in the horizontal direction in the inner walls of the first and second rooms near and above both the sides of the oil pan
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