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Gearbox with shifting auxiliary shaft and shifting method of the gearbox

A technology for auxiliary shafts and gearboxes, applied in the direction of components with teeth, belts/chains/gears, mechanical equipment, etc., can solve the problems of increased cost and control difficulty, short cut-off time, large torque impact, etc. The effect of time reduction, life extension, and requirement reduction

Inactive Publication Date: 2012-10-24
鲁伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of shifting gears, the manual transmission and AMT automatic transmission generally have power interruption, that is, the action of using the clutch to cut off the power transmission, resulting in shifting shock and body shaking, affecting comfort
Even the current more advanced DCT dual-clutch has a short cut-off time and is not easy to detect, but the torque impact in the drive train is large and the cost is high
In some schemes, in order not to interrupt the power, the motor is added to supplement the power output during the gear shift, which also increases the cost and control difficulty

Method used

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  • Gearbox with shifting auxiliary shaft and shifting method of the gearbox
  • Gearbox with shifting auxiliary shaft and shifting method of the gearbox

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Embodiment Construction

[0017]

[0018] Combine below figure 1 Illustrate the implementation of the present invention, figure 2 with figure 1 The principle is the same and can be deduced by analogy. Assume that the gearbox has 3 forward gears and one reverse gear.

[0019] 1) When the car starts, the clutch 7 is disconnected, the first gear A gear pair is engaged, the clutch 7 is engaged and the accelerator is started.

[0020] 2) The gear shift auxiliary shaft is engaged in the first gear B gear pair, at this time the one-way overrunning clutch 4 is overrun, the clutch 7 is gradually disconnected, the one-way overrunning clutch 4 stops overrunning, and is driven by the first gear B alone.

[0021] 3) As the vehicle speed increases, the engine speed rises to a certain level, the clutch 7 is gradually engaged, the one-way overrunning clutch 4 is overrun, driven by the first gear A alone, and the engine speed drops.

[0022] 4) In order to shift into the second gear, the clutch 7 is gradually...

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PUM

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Abstract

The invention belongs to gearboxes in the field of automobiles. A gearbox comprises a conventional automobile gearbox body, a shifting auxiliary shaft which is in parallel connection with a torque output end of an engine and a torque output end of the gearbox by the aid of a plurality of gear pairs and crosses an exogenetic force on-off clutch is added, and a one-way overrunning clutch with control power which can only be transferred from the engine to the gear box is additionally mounted. A (can be a plurality of) matching gear for each original speed changing gear is arranged on the shifting auxiliary shaft, wherein each matching gear is higher in speed ratio as compared with each original speed changing gear and is lower in speed ratio as compared with a gear which is one stage lower than each original speed changing gear. Throughout uninterrupted power output during power switching is guaranteed by performing power relay in the matching gears or among the matching gears of different gears.

Description

technical field [0001] The invention belongs to a gearbox in the field of automobiles, and relates to a gearbox with an auxiliary shaft for shifting and a shifting method thereof. Background technique [0002] Automobile manual transmissions and AMT automatic transmissions generally have power interruption during the shifting process, that is, the action of using the clutch to cut off the power transmission, which brings shifting shock and body shaking, which affects comfort. Even the current more advanced DCT dual clutch, it is only a short cut-off time, which is not easy to detect, but the torque impact in the drive train is large and the cost is high. Some schemes add a motor to supplement the power output during gear shifting in order not to interrupt the power, which also increases the cost and control difficulty. Contents of the invention [0003] In order to overcome the shortcomings of the prior art, the present invention provides a gearbox and its shifting method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H63/30F16H61/684
Inventor 鲁伟
Owner 鲁伟