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Parallel shaft-type automatic gearbox series

An automatic transmission, series of technology, applied in the direction of transmission, gear transmission, belt/chain/gear, etc.

Inactive Publication Date: 2009-09-16
杨庆民 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This arrangement also allows the use of a lower number of forward gears than in existing automatic transmissions

Method used

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  • Parallel shaft-type automatic gearbox series
  • Parallel shaft-type automatic gearbox series
  • Parallel shaft-type automatic gearbox series

Examples

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Embodiment Construction

[0056] The structure and shifting principle of the present invention can be used Figure 1 to Figure 46 Five-, six-, seven-, eight- and nine-speed automatic transmissions and automatic manual transmission mechanisms are illustrated.

[0057] Such as figure 1 Vehicle powertrain 501 is shown, five speed automatic transmission gearbox 501G driven by engine 501E.

[0058] The five-speed automatic transmission gearbox 501G includes a mechanical shock absorber 501D, a main clutch 501C0, an input shaft 501A1, an output shaft 501A2 and an intermediate shaft 501A3. 501E can be connected with the input shaft 501A1 through the main clutch 501C0. The gearbox 501G also includes a series of gears, including a gear 501G1 fixed on the input shaft 501A1, which can rotate freely on the input shaft 501A1 and is respectively connected with the gears 501G4 and 501G7 through clutches 501C1 and 501C2, which can be rotated on the output shaft 501A2. The upper gear 501G2 is freely rotating and conne...

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Abstract

The invention relates to a novel parallel shaft-type automatic transmission gearbox series, which is applied in the fifth, the sixth, the seventh, the eighth and the ninth gear of an automotive transmission system. Three types of automatic transmission gearboxes are produced according to the design concept, namely, an automatic transmission gearbox without a hydraulic torque converter, an automatic transmission gearbox with the hydraulic torque converter and an automatic manual transmission gearbox. By the optimized arrangement of a gear, a clutch and a synchronizer, when a plurality of clutches are used for gear shifting, the defaults of the high slip rate of the clutch of a dual-clutch automatic transmission, and high material requirement, high transient heating and complex control caused by the high slip rate are overcome, so that the slip rate of the clutch is reduced to a level within the allowed range of a traditional automatic transmission clutch material, thus simplifying the entire system. The default of using excessive forward gears in the dual-clutch automatic transmission and the traditional automatic transmission is overcome, and the invention permits using less forward gear, thereby reducing the cost, the weight and the volume of the gearbox.

Description

technical field [0001] The invention relates to a new series of five-, six-, seven-, eight- and nine-speed parallel-shaft automatic transmission gearboxes used in automobile transmission systems. Background of the invention [0002] The power system of a car consists of an engine, a multi-stage transmission and a differential. The main function of the transmission is to expand the working range of the engine, so that the vehicle can work normally under the condition that the driving resistance is several times larger than the engine torque or the vehicle speed is higher than the engine speed. [0003] With the emergence of five-speed and six-speed automatic transmissions (US Patent No.: 5,106,352, 6,656,078), the difference between transmission ratios is getting smaller and smaller, and the shifting comfort has been significantly improved compared with three-speed and four-speed transmissions. At the same time, a transmission with more gears is more superior in terms of fue...

Claims

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Application Information

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IPC IPC(8): F16H3/08
Inventor 杨庆民卢建钢汪大明史国军
Owner 杨庆民
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