Vehicular speed change gear having a continuously variable transmission connected in series with a stepped gear transmission
A vehicular speed change gear is described for a vehicle having an engine provided with a crankshaft, a driving wheel, and a power transmission system which operatively connects the crankshaft and driving wheel together comprising: a stepless V-belt transmission and a stepped gear transmission disposed in series in the power transmission system; the stepped gear transmission including a low forward speed gear train and a high-forward speed gear train for selectively providing forward low and high speed transmission ratios respectively; and a clutch disposed between the crankshaft and the stepless V-belt transmission for operative connection between the stepless V-belt transmission including a driving V-pulley coupled through the clutch to the crankshaft and has a fixed pulley half-body and a movable-pulley half-body is capable of moving back and forth against the fixed pulley half-body; a driven V-pulley coupled to the stepped gear transmission and having a fixed pulley half-body and a movable pulley half-body capable of moving back and forth against the fixed pulley half-body; and a V-belt stretched between the driving and driven V-pulleys. A first control valve positioned in the driving V-pulley is for controlling movement of pulley half-body of V-pulley and a second control valve positioned for controlling movement. The first and second control valves are both operatively coupled through an interlocking mechanism for operatively connecting the movable pulley half-body of the driving V-pulley and interlocking mechanism is adapted to decrease and increase an effective radius of the driven V-pulley equivalently and simultaneously in accordance with the respective amount of increase and decrease in an effective radius of the driving V-pulley.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4674359
- OSTI ID:
- 6189120
- Resource Relation:
- Patent File Date: Filed date 8 Feb 1983
- Country of Publication:
- United States
- Language:
- English
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