Eight-gear automobile automatic transmission
A technology for automatic transmissions and automobiles, which is applied in the direction of vehicle gearboxes, transmission components, transmission devices, etc., and can solve problems such as limitations of system transmission ratios
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Embodiment 1
[0151] Embodiment 1 is the automobile automatic transmission 101 in the eight-speed automobile automatic transmission described in the present invention, which can be used as a transmission for front-mounted engine and front-wheel drive wheels.
[0152] Figure 1A It is a structural schematic diagram of an embodiment of an eight-speed automatic transmission for an automobile according to the present invention, an automatic transmission for an automobile 101; Wherein the planetary gear train 4 consists of the first sun gear 41, the third sun gear 42, the planet carrier 43, the first ring gear 44, the first planetary gear 45 without steps, the first planetary gear 46 with steps, The second ring gear 47, the second sun gear 48 are formed. The clutches 2 include a first group clutch 21 , a second group clutch 22 and a third group clutch 23 . The brakes 3 include a first group of brakes 31 , a second group of brakes 32 , a third group of brakes 33 and a fourth group of brakes 34 ....
Embodiment 2
[0183] The following describes another embodiment of the eight-speed automatic transmission for automobiles 102 of the present invention. Since the parts in the following embodiments are substantially the same as those of the first embodiment and are assigned the same reference numerals, the detailed description thereof will be omitted.
[0184] Figure 2A It is a structural schematic diagram of the second embodiment of the eight-speed automatic transmission for automobiles 102 of the present invention; Figure 2B It is a schematic diagram of the planetary gear train of the second embodiment of the eight-speed automatic transmission for automobiles 102 of the present invention;
[0185] The meshing relationship of each gear in the planetary gear train 4 is respectively:
[0186] The first right-end gear 46B with stepped planetary gear meshes with the first sun gear 41, and the first left-end gear 46A with stepped planetary gear meshes with the second sun gear 48 and the first...
Embodiment 3
[0197] Figure 3A It is a structural schematic diagram of the third embodiment of the eight-speed automatic transmission for automobiles 103 of the present invention; Figure 3B It is a schematic diagram of the planetary gear train of the third embodiment of the eight-speed automatic transmission for automobiles 103 of the present invention;
[0198] and Figure 1A In comparison, only the first ring gear 44 is changed to mesh with the left end gear 46A of the planetary gear 46, and the rest remain unchanged.
[0199] The meshing relationship of each gear in the planetary gear train 4 is respectively:
[0200] The first right-end gear 46B with stepped planetary gear meshes with the first sun gear 41, and the first left-end gear 46A with stepped planetary gear meshes with the second sun gear 48 and the first non-stepped planetary gear 45 at the same time. meshing; the first non-stepped planetary gear 45 meshes with the third sun gear 42 and the first left-end gear 46A with ste...
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