阅读说明：本技术 多档位行星排式自动变速器及其控制方法和车辆 (Multi-gear planetary row type automatic transmission, control method thereof and vehicle ) 是由 杜柳絮 张宇 崔瑾 王凡 刘彦甫 宋杰 于 2019-03-29 设计创作，主要内容包括：本发明涉及一种多档位行星排式自动变速器及其控制方法和车辆,所述自动变速器包括均具有太阳轮、行星架与齿圈的第一行星排、第二行星排、第三行星排和第四行星排,以及若干离合机构和制动机构,且于第一行星排的行星架处设置有第一制动机构,或者,于自动变速器的输入端还传动连接有电机。本发明所述的多档位行星排式自动变速器,可具有较高的传动效率,以及较好的驾驶平顺性。(The invention relates to a multi-gear planet row type automatic transmission, a control method thereof and a vehicle, wherein the automatic transmission comprises a first planet row, a second planet row, a third planet row, a fourth planet row, a plurality of clutch mechanisms and brake mechanisms, wherein the first planet row, the second planet row, the third planet row and the fourth planet row are respectively provided with a sun gear, a planet carrier and a gear ring, the planet carrier of the first planet row is provided with the first brake mechanism, or the input end of the automatic transmission is also in transmission connection with a motor. The multi-gear planetary row type automatic transmission has high transmission efficiency and good driving smoothness.)

1. The utility model provides a many gears planet row formula automatic gearbox which characterized in that: the planetary gear set at least comprises a first planetary row, a second planetary row, a third planetary row and a fourth planetary row, wherein the first planetary row, the second planetary row, the third planetary row and the fourth planetary row respectively comprise a sun gear, a planet carrier and a gear ring;

the sun gear of the first planet row is in transmission connection with the sun gear of the fourth planet row and is in transmission connection with the input end of the automatic transmission, the gear ring of the first planet row is in transmission connection with the sun gear of the second planet row, the planet carrier of the third planet row and the gear ring of the fourth planet row are in transmission connection, and the gear ring of the third planet row is in transmission connection with the output end of the automatic transmission;

the automatic transmission also comprises a first clutch mechanism which is in transmission connection between the planet carrier of the first planet row and the gear ring of the second planet row, a second clutch mechanism which is in transmission connection between the sun gear of the first planet row and the sun gear of the fourth planet row as well as the gear ring of the second planet row, a third clutch mechanism which is in transmission connection between the planet carrier of the fourth planet row and the gear ring of the third planet row as well as the output end of the automatic transmission, a second brake mechanism which is arranged at the gear ring of the first planet row, and a third brake mechanism which is arranged at the sun gear of the third planet row;

the input end of the automatic transmission is in transmission connection with the power output end of the engine, a first brake mechanism is arranged at the planet carrier of the first planet row, or the input end of the automatic transmission is also in transmission connection with a motor.

2. The multi-speed planetary automatic transmission according to claim 1, characterized in that: when the input end of the automatic transmission is in transmission connection with the motor, the power output end of the engine is coaxially arranged with the motor.

3. A control method of a multi-gear planetary row type automatic transmission is characterized in that: the multi-gear planetary automatic transmission is applied to the multi-gear planetary automatic transmission of claim 1; when a first brake mechanism is arranged at a planet carrier of a first planet row in the multi-gear planet row type automatic transmission, the control method comprises the following steps:

a. controlling the first clutch mechanism to be engaged, controlling the second brake mechanism and the third brake mechanism to brake, and entering a first gear mode; or the like, or, alternatively,

b. controlling the first clutch mechanism and the third clutch mechanism to be engaged, controlling the first brake mechanism to brake, and entering a two-gear mode; or the like, or, alternatively,

c. controlling the first clutch mechanism and the third clutch mechanism to be engaged, controlling the second brake mechanism to brake, and entering a third gear mode; or the like, or, alternatively,

d. controlling the third clutch mechanism to be engaged, braking the third brake mechanism, and entering a fourth gear mode; or the like, or, alternatively,

e. controlling the second clutch mechanism and the third clutch mechanism to be engaged, controlling the second brake mechanism to brake, and entering a fifth gear mode; or the like, or, alternatively,

f. controlling the first clutch mechanism, the second clutch mechanism and the third clutch mechanism to be engaged to enter a sixth gear mode; or the like, or, alternatively,

g. controlling the second clutch mechanism to be engaged, controlling the second brake mechanism and the third brake mechanism to brake, and entering a seven-gear mode; or the like, or, alternatively,

h. controlling the first clutch mechanism and the second clutch mechanism to be engaged, controlling the third brake mechanism to brake, and entering an eight-gear mode; or the like, or, alternatively,

i. and controlling the first clutch mechanism to be engaged, controlling the first brake mechanism and the third brake mechanism to brake, and entering a reverse gear mode.

4. A control method of a multi-gear planetary row type automatic transmission is characterized in that: the multi-gear planetary automatic transmission is applied to the multi-gear planetary automatic transmission of claim 1 or 2; when the input end of the multi-gear planetary automatic gearbox is in transmission connection with a motor, the control method comprises the following steps:

a. controlling the first clutch mechanism to be engaged, controlling the second brake mechanism and the third brake mechanism to brake, and entering a first gear mode; or the like, or, alternatively,

b. controlling the first clutch mechanism and the third clutch mechanism to be jointed, controlling the second brake mechanism to brake, and entering a second gear mode; or the like, or, alternatively,

c. controlling the third clutch mechanism to be engaged, braking the third brake mechanism and entering a third gear mode; or the like, or, alternatively,

d. controlling the second clutch mechanism and the third clutch mechanism to be engaged, controlling the second brake mechanism to brake, and entering a fourth-gear mode; or the like, or, alternatively,

e. controlling the first clutch mechanism, the second clutch mechanism and the third clutch mechanism to be engaged to enter a fifth gear mode; or the like, or, alternatively,

f. controlling the second clutch mechanism to be engaged, controlling the second brake mechanism and the third brake mechanism to brake, and entering a six-gear mode; or the like, or, alternatively,

g. controlling the first clutch mechanism and the second clutch mechanism to be engaged, controlling the third brake mechanism to brake, and entering a seven-gear mode; or the like, or, alternatively,

h. and controlling the motor to rotate reversely to enter a reverse gear mode.

5. A vehicle, characterized in that: the multi-gear planetary automatic transmission of claim 1 or 2 is mounted on the vehicle, and when the input end of the automatic transmission is in transmission connection with a motor, the vehicle is further provided with a power battery unit electrically connected with the motor.

Technical Field

The invention relates to the technical field of transmissions, in particular to a multi-gear planetary row type automatic transmission, and meanwhile, the invention also relates to a control method of the multi-gear planetary row type automatic transmission.

Background

With the rapid development of the automobile industry and the increasing shortage of energy sources, the requirements of people on driving smoothness and engine fuel economy are higher and higher, so that the multi-gear transmission is more and more popular with consumers. In the prior art, in order to realize the switching among a plurality of gears, more gears and control elements are generally required to be added into the transmission, so that the control system of the transmission is more complex and the efficiency is lower. In addition, the existing multi-gear transmission is difficult to structurally modify, so that structural platformization is not facilitated, and the development cost of a new vehicle type is increased. In addition, because of structural design is unreasonable, current many gears derailleur shifts unsmooth, leads to driving to feel relatively poor.

Disclosure of Invention

In view of this, the present invention is directed to a multi-gear planetary-row type automatic transmission, which has high transmission efficiency and can reduce the oil consumption of the entire vehicle.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a multi-gear planet row type automatic transmission at least comprises a first planet row, a second planet row, a third planet row and a fourth planet row, wherein the first planet row, the second planet row, the third planet row and the fourth planet row respectively comprise a sun gear, a planet carrier and a gear ring;

the sun gear of the first planet row is in transmission connection with the sun gear of the fourth planet row and is in transmission connection with the input end of the automatic transmission, the gear ring of the first planet row is in transmission connection with the sun gear of the second planet row, the planet carrier of the third planet row and the gear ring of the fourth planet row are in transmission connection, and the gear ring of the third planet row is in transmission connection with the output end of the automatic transmission;

the automatic transmission also comprises a first clutch mechanism which is in transmission connection between the planet carrier of the first planet row and the gear ring of the second planet row, a second clutch mechanism which is in transmission connection between the sun gear of the first planet row and the sun gear of the fourth planet row as well as the gear ring of the second planet row, a third clutch mechanism which is in transmission connection between the planet carrier of the fourth planet row and the gear ring of the third planet row as well as the output end of the automatic transmission, a second brake mechanism which is arranged at the gear ring of the first planet row, and a third brake mechanism which is arranged at the sun gear of the third planet row;

the input end of the automatic transmission is in transmission connection with the power output end of the engine, a first brake mechanism is arranged at the planet carrier of the first planet row, or the input end of the automatic transmission is also in transmission connection with a motor.

Further, when the input end of the automatic transmission is in transmission connection with a motor, the power output end of the engine and the motor are coaxially arranged.

Compared with the prior art, the invention has the following advantages:

the multi-gear planetary row type automatic transmission has the advantages of higher transmission efficiency, better driving smoothness and capability of effectively reducing oil consumption, so that the multi-gear planetary row type automatic transmission has a better using effect.

Meanwhile, the present invention also provides a control method of a multi-gear planetary automatic transmission, which is applied to the multi-gear planetary automatic transmission as described above, and in which a first brake mechanism is provided at a carrier of the first planetary gear, and the control method includes:

a. controlling the first clutch mechanism to be engaged, controlling the second brake mechanism and the third brake mechanism to brake, and entering a first gear mode; or the like, or, alternatively,

b. controlling the first clutch mechanism and the third clutch mechanism to be engaged, controlling the first brake mechanism to brake, and entering a two-gear mode; or the like, or, alternatively,

c. controlling the first clutch mechanism and the third clutch mechanism to be engaged, controlling the second brake mechanism to brake, and entering a third gear mode; or the like, or, alternatively,

d. controlling the third clutch mechanism to be engaged, braking the third brake mechanism, and entering a fourth gear mode; or the like, or, alternatively,

e. controlling the second clutch mechanism and the third clutch mechanism to be engaged, controlling the second brake mechanism to brake, and entering a fifth gear mode; or the like, or, alternatively,

f. controlling the first clutch mechanism, the second clutch mechanism and the third clutch mechanism to be engaged to enter a sixth gear mode; or the like, or, alternatively,

g. controlling the second clutch mechanism to be engaged, controlling the second brake mechanism and the third brake mechanism to brake, and entering a seven-gear mode; or the like, or, alternatively,

h. controlling the first clutch mechanism and the second clutch mechanism to be engaged, controlling the third brake mechanism to brake, and entering an eight-gear mode; or the like, or, alternatively,

i. and controlling the first clutch mechanism to be engaged, controlling the first brake mechanism and the third brake mechanism to brake, and entering a reverse gear mode.

In addition, the present invention further provides another control method for a multi-gear planetary automatic transmission, which is applied to the multi-gear planetary automatic transmission, wherein a motor is connected to an input end of the automatic transmission in a transmission manner, and the control method comprises:

a. controlling the first clutch mechanism to be engaged, controlling the second brake mechanism and the third brake mechanism to brake, and entering a first gear mode; or the like, or, alternatively,

b. controlling the first clutch mechanism and the third clutch mechanism to be jointed, controlling the second brake mechanism to brake, and entering a second gear mode; or the like, or, alternatively,

c. controlling the third clutch mechanism to be engaged, braking the third brake mechanism and entering a third gear mode; or the like, or, alternatively,

d. controlling the second clutch mechanism and the third clutch mechanism to be engaged, controlling the second brake mechanism to brake, and entering a fourth-gear mode; or the like, or, alternatively,

e. controlling the first clutch mechanism, the second clutch mechanism and the third clutch mechanism to be engaged to enter a fifth gear mode; or the like, or, alternatively,

f. controlling the second clutch mechanism to be engaged, controlling the second brake mechanism and the third brake mechanism to brake, and entering a six-gear mode; or the like, or, alternatively,

g. controlling the first clutch mechanism and the second clutch mechanism to be engaged, controlling the third brake mechanism to brake, and entering a seven-gear mode; or the like, or, alternatively,

h. and controlling the motor to rotate reversely to enter a reverse gear mode.

In addition, another objective of the present invention is to provide a vehicle, wherein the vehicle is provided with the multi-gear planetary automatic transmission, and when an input end of the automatic transmission is in transmission connection with a motor, the vehicle is further provided with a power battery unit electrically connected with the motor.

Compared with the prior art, the vehicle and the multi-gear planetary automatic transmission have the same beneficial effects, and the details are not repeated.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a multi-speed planetary automatic transmission according to a first embodiment of the present invention;

fig. 2 is a control logic diagram of a multi-speed planetary automatic transmission according to a first embodiment of the present invention;

fig. 3 is a schematic view of a multi-speed planetary automatic transmission according to a second embodiment of the invention;

fig. 4 is a control logic diagram of a multi-speed planetary automatic transmission according to a second embodiment of the present invention;

description of reference numerals:

s1-first sun gear, PC 1-first planet carrier, R1-first ring gear;

s2-second sun gear, PC 2-second planet carrier, R2-second ring gear;

s3-third sun gear, PC 3-third planet carrier, R3-third ring gear;

s4-fourth sun gear, PC 4-fourth planet carrier, R4-fourth ring gear;

b1-first brake, B2-second brake, B3-third brake;

c1-first clutch, C2-second clutch, C3-third clutch.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.