Light-duty automotive transmission with main box and secondary box

Abstract

The invention discloses a light-duty automotive transmission with a main box and a secondary box, which has a middle shaft type fixed shaft transmission structure. Gears of the transmission comprise four forward gears and one reverse gear, and adopt full oblique tooth meshing transmission; the first, second, third and fourth gears are shifted by adopting a lock ring type synchronizer; and the reverse gear is shifted by adopting a meshing sleeve. A secondary transmission also has a fixed shaft transmission structure, and has two gears comprising a high gear and a low gear which are shifted by adopting a lock ring type high-capacity synchronizer; and the conversion of the high and low gear areas is automatically operated by an air valve. The main transmission and the secondary transmission are combined to form a layout of eight forward gears and two reverse gears. The light-duty automotive transmission has the advantages of large loading capacity, more gear number, speed ratio matching distribution according to offset geometric progression, linked operation of the main box and the secondary box, environmental protection, energy conservation and the like, has strong adaptability for various working conditions and road conditions, and can well meet the development requirement of current domestic automobiles.

Description

technical field [0001] The invention discloses a light-duty automobile transmission with a main box and an auxiliary box, belonging to the technical field of auto parts. Background technique [0002] The current domestic light-duty car transmission with auxiliary box has only one gear available in the low gear area (the speed ratio of the other gears is repeated), and when switching between high and low gears, it is necessary to stop and change gears, which is inconvenient to operate, difficult to change gears, and the actual number of available gears Problems such as small size and high fuel consumption can no longer meet the needs of the rapid development of domestic light vehicles. Contents of the invention [0003] In order to solve the above problems, the present invention provides a light-duty vehicle transmission with main and auxiliary boxes, which has compact structure, multiple gears, large speed ratio range, reasonable matching, good meshing performance, and low...

AI Technical Summary

Problems solved by technology

[0002] The current domestic light-duty car transmission with auxiliary box has only one gear available in the low gear area (the speed ratio of the other gears is repeated), and when switching between high and low gears, it is necessary to stop and change gears, which is inconvenient to operate, difficult to change gears, and the actual number of available gears Problems such as small size and high fuel consumption can no longer meet the needs of the rapid development of domestic light vehicles

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