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An automatic transmission device and vehicle technology, which is applied in the direction of vehicle gearboxes, transmission devices, gear transmission devices, etc., can solve the problems that the transmission efficiency of automatic transmission devices cannot be enhanced, and the dragging resistance increases, so as to achieve the reduction of dragging resistance and the enhancement of transmission efficiency Effect
Inactive Publication Date: 2017-02-15
AISIN SEIKI KK
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Also, according to the known automatic transmission, since two of the six engagement elements are engaged and the other four engagement elements are released so as to have nine forward speeds and one reverse speed and the number of released engagement elements increases, So the drag resistance at the engagement element increases
Thus, the transmission efficiency of the automatic transmission may be prevented from being enhanced due to the increased drag resistance
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[0026] Various embodiments of an automatic transmission for a vehicle will be described below with reference to the accompanying drawings. In these embodiments, an automatic transmission for a vehicle is used as a device for changing the speed of rotational driving force output by a power source mounted on the vehicle, such as an engine and an electric motor. By an automatic transmission for a vehicle, the rotational driving force whose speed is changed is transmitted to the steering wheels via a differential. Thus, the vehicle moves forward or backward in accordance with a predetermined gear determined by the automatic transmission for the vehicle.
[0027] The first embodiment of the automatic transmission for a vehicle can be constructed in a number of ways, as a starting point, hereinafter reference will be made to figure 1 The schematic diagram in , which shows the configuration including various configurations. The automatic transmission 10 for a vehicle includes: an i...
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Abstract
An automatic transmission device (10, 11, 12, 13, 14, 15) for a vehicle includes a first planetary gear mechanism (P1), a second planetary gear mechanism (P2), a third planetary gear mechanism (P3), a fourth planetary gear mechanism (P4), an input shaft (N), an output shaft (T), six engaging elements including a first engaging element (M1), a second engaging element (M2), a first clutch (CL1), a second clutch (CL2), a third clutch (CL3) and a brake (B1), a first connection member (J1), a second connection member (J2), a third connection member (J3), a fourth connection member (J4), a fifth connection member (J5), a sixth connection member (J6), a seventh connection member (J7), an eighth connection member (J8), and a ninth connection member (J9). According to the invention, transmission efficiency and flexibility of a transmission device can be improved.
Description
technical field [0001] The present application generally relates to an automatic transmission for a vehicle. Background technique [0002] A known automatic transmission for vehicles is disclosed in US7364527B (hereinafter referred to as Patent Document 1), which can be provided with nine forward gears (ie, forward speed) and one reverse gear (ie, reverse speed ). For example, an automatic transmission for a vehicle disclosed in Patent Document 1 includes four planetary gear mechanisms and six engaging elements. The automatic transmission of this vehicle determines nine forward speeds and one reverse speed by engaging two of the six engagement elements. [0003] In the automatic transmission for a vehicle disclosed in Patent Document 1, the sun gear of the first planetary gear mechanism is connected to the input shaft, and is selectively engaged with the carrier of the third planetary gear mechanism through the second clutch. The carrier of the first planetary gear mechan...
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