CN104033546B - 11 shift transmissions - Google Patents

Abstract

The invention relates to an eleven-speed transmission, which comprises an input member, an output member, four planetary gear rows, four clutches, two brakes and four connecting members. Each planetary gear row includes the sun gear, planet carrier and ring gear. Using the connection form of the planetary row and the arrangement of the combined elements of the transmission can realize 11 forward gears and 1 reverse gear, the total transmission ratio is 8.35, the K values of the four planetary rows are all in the range of 1.62-3.39, and each planetary The rows are single planetary planetary rows.

Description

eleven speed transmission

technical field

The invention belongs to the technical field of vehicle (automobile, special vehicle, construction machinery) transmission, and specifically relates to an eleven-speed transmission.

Background technique

In order to improve the performance of the vehicle (power performance, fuel economy, shifting performance), the number of car gears is developing towards more than six gears, and dump trucks also require more than six gears, so more gears need to be found. Combine drive solutions with fewer components.

Contents of the invention

The object of the present invention is to provide an eleven-speed planetary automatic transmission for vehicles, which uses fewer planetary rows and coupling elements to enable the transmission to achieve more gears.

The invention provides a transmission, including a planetary row, an input member 23, an output member (24), a connecting member, a clutch and a brake. There are four planetary rows and they are single planetary gear planetary rows. The first planetary row 25 includes the first ring gear 1, the first planet carrier 2, and the first sun gear 3, and the second planetary row 26 includes the second ring gear 4. , the second planet carrier 5, the second sun gear 6, the third planet row 27 includes the third ring gear 7, the third planet carrier 8, the third sun gear 9, the fourth planet row 28 includes the fourth ring gear 10, the Four planet carrier 11, the fourth sun gear 12; said connecting member has four respectively first connecting member 19, second connecting member 20, third connecting member 21, fourth connecting member 22; said clutch has four , are respectively the first clutch 13, the second clutch 14, the third clutch 15, and the fourth clutch 16; the brakes have two respectively the first brake 17 and the second brake 18;

said first connecting member 19, which fixedly interconnects said second sun gear 6 with said third sun gear 9;

The second connecting member 20, which fixedly interconnects the second planet carrier 5 and the fourth sun gear 12;

The third connecting member 21 fixedly interconnects the second ring gear 4 with the third planet carrier 8 ;

The fourth connecting member 22, which fixedly interconnects the third ring gear 7 and the fourth planet carrier 11;

The first clutch 13 is selectively engageable to interconnect the first planet carrier 2 with the first connecting member 19;

said second clutch 14 is selectively engageable to interconnect said first planet carrier 2 with said third connecting member 21;

The third clutch 15 is selectively engageable to interconnect the first sun gear 3 with the third connecting member 21;

said fourth clutch 16 is selectively engageable to interconnect said first sun gear 3 with said fourth ring gear 10;

The first detent 17 is selectively engageable to interconnect the first connecting member 19 with the stationary member.

said second detent 18 is selectively engageable to interconnect said second connecting member 20 with said stationary member;

The input member 23 is fixedly interconnected with the first sun gear 3 , the output member 24 is fixedly interconnected with the fourth connecting member 22 , and the fixed member is fixedly interconnected with the first ring gear 1 interconnection.

In the present invention, the planetary rows are single planetary wheel planetary rows.

In the present invention, the fixed member is a transmission case.

The present invention uses four single-planet gear planetary rows, and six combination elements include four clutches and two brakes, and two of them are combined to realize eleven forward gears and one reverse gear. The speed ratio interval between the gears is between 1.06 and 1.46, which meets the speed ratio distribution requirements of the vehicle, and has a simple structure, fewer idling components, and a large possibility of mutual conversion between the gears.

Description of drawings

Fig. 1 is a schematic diagram of the arrangement and connection of various components of the eleven-speed transmission of the present invention.

Figure 2 is a transition diagram between interval gears.

Numbers in the figure: 1 is the first ring gear, 2 is the first planet carrier, 3 is the first sun gear, 4 is the second ring gear, 5 is the second planet carrier, 6 is the second sun gear, 7 is the third Ring gear, 8 is the third planet carrier, 9 is the third sun gear, 10 is the fourth ring gear, 11 is the fourth planet carrier, 12 is the fourth sun gear, 13 is the first clutch, 14 is the second clutch, 15 is the third clutch, 16 is the fourth clutch, 17 is the first brake, 18 is the second brake, 19 is the first connection member, 20 is the second connection member, 21 is the third connection member, 22 is the fourth connection Components, 23 is the input component, 24 is the output component, 25 is the first planetary row, 26 is the second planetary row, 27 is the third planetary row, 28 is the fourth planetary row.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1:

1. Component connection and combination elements

Component connections between planetary rows:

Referring to Fig. 1: the first planet row 25 includes the first sun gear 3, the first planet carrier 2, and the first ring gear 1; the first sun gear 3 is connected with the input member 23, the third clutch 15 and the fourth clutch 16; A planet carrier 2 is connected with the first clutch 13 and the second clutch 14; the first ring gear 1 is connected with the fixed member.

The second planet row 26 includes the second sun gear 6, the second planet carrier 5, and the second ring gear 4; the second sun gear 6 is connected with the first clutch 13, the first brake 17 and the first connecting member 19; the second The planet carrier 5 is connected with the second connecting member 20 and the second brake 18 ; the second ring gear 4 is connected with the third connecting member 21 .

The third planet row 27 includes a third sun gear 9, a third planet carrier 8, and a third ring gear 7; the third sun gear 9 is connected to the first connecting member 19; the third planet carrier 8 is connected to the third connecting member 21, The second clutch 14 is connected to the third clutch 15 ; the third ring gear 7 is connected to the fourth connecting member 22 .

The fourth planet row 28 includes the fourth sun gear 12, the fourth planet carrier 11, and the fourth ring gear 10; the fourth sun gear 12 is connected with the second connecting member 20 and the second brake 18; the fourth planet carrier 11 is connected with the output The member 24 is connected to the fourth connecting member 22 ; the fourth ring gear 10 is connected to the fourth clutch 16 .

Arrangement of binding elements:

The first clutch 13 connects the first planet carrier 2 with the first connecting member 19 . The second clutch 14 connects the first carrier 2 with the third connecting member 21 . The third clutch 15 connects the first sun gear 3 with the third connecting member 21 . The fourth clutch 16 connects the first sun gear 3 with the fourth ring gear 10 . The first brake 17 connects the first connection member 19 with the housing. The second brake 18 connects the second connection member 20 with the housing.

2. The realization method of each gear

Referring to Fig. 1 and Table 1, the operation of an eleven-speed transmission is taken as an example for illustration, and the implementation method of the ten-speed transmission in Table 2 is similar to that of the eleventh gear.

By combining two of the six coupling elements, 11 forward gears including 3 overdrive gears and 1 reverse gear can be obtained. Table 1 is a table representing the coupling state of the coupling elements at each gear position. "●" in the table means that the binding element is in the binding state. The table also includes the speed ratio of each gear and the speed ratio interval between two adjacent gears. It should be noted, however, that these figures are exemplary only, and that these values can be adjusted within a wide range. The speed ratio refers to the ratio of the input rotational speed to the output rotational speed, and the K value of the planetary row refers to the ratio of the number of teeth of the ring gear of the planetary row to the number of teeth of the sun gear.

Table 1 Speed ratio, speed ratio interval and combined state of combined elements of eleven-speed transmission

k1=3.39;k2=1.95;k3=3.27;k4=1.62;i=8.35

When the first clutch 13 and the second brake 18 are combined, the first planet carrier 2 and the first connecting member 19 rotate together, and the second connecting member 20 brakes to realize reverse gear.

When the first clutch 13 and the second clutch 14 are combined, the first planet carrier 2 and the first connecting member 19 rotate together, and the first planet carrier 2 and the third connecting member 21 rotate together to realize the first gear.

When the second clutch 14 and the first brake 17 are combined, the first planet carrier 2 and the third connecting member 21 rotate together, and the first connecting member 19 brakes to realize the second gear.

When the second clutch 14 and the second brake 18 are combined, the first planet carrier 2 and the third connecting member 21 rotate together, and the second connecting member 20 brakes to realize the third gear.

When the second clutch 14 and the fourth clutch 16 are combined, the first planet carrier 2 and the third connecting member 21 rotate together, and the first sun gear 3 and the fourth ring gear 10 rotate together to realize the fourth gear.

When the fourth clutch 16 and the second brake 18 are combined, the first sun gear 3 and the fourth ring gear 10 rotate together, and the second connecting member 20 brakes to realize the fifth gear.

When the fourth clutch 16 and the first brake 17 are combined, the first sun gear 3 and the fourth ring gear 10 rotate together, and the first connecting member 19 brakes to realize the sixth gear.

When the first clutch 13 and the fourth clutch 16 are combined, the first planet carrier 2 and the first connecting member 19 rotate together, the first sun gear 3 and the fourth ring gear 10 rotate together, and the seventh gear is realized.

When the third clutch 15 and the fourth clutch 16 are engaged, the first sun gear 3 and the third connecting member 21 and the fourth ring gear 10 rotate together to realize the eighth gear.

When the first clutch 13 and the third clutch 15 are combined, the first planet carrier 2 and the first connecting member 19 rotate together, the first sun gear 3 and the third connecting member 21 rotate together, and the ninth gear is realized.

When the third clutch 15 and the first brake 17 are combined, the first sun gear 3 and the third connecting member 21 rotate together, and the first connecting member 19 brakes to realize the tenth gear.

When the third clutch 15 and the second brake 18 are combined, the first sun gear 3 and the third connecting member 21 rotate together, and the second connecting member 20 brakes to realize the eleventh gear.

3. Transmission scheme lower than eleventh gear

Referring to Fig. 2, non-adjacent gears are also switchable. For example, the first gear can be directly shifted to the third gear, while meeting the requirements of oneshift (only changing the combined state of the two combined elements). Under certain conditions, jumping between gears can be realized, and some unnecessary gears can be skipped, so the present invention can also be used as a transmission below eleventh gear. Refer to Table 2 for the scheme of the ten-speed transmission obtained after removing one gear from the eleven-speed transmission.

Table 2 Ten-speed transmission speed ratio, speed ratio interval and combination state of combination elements

k1=3.39;k2=1.95;k3=3.27;k4=1.62;i=8.35

In this embodiment, k1=3.39; k2=1.95; k3=3.27; k4=1.62; the total transmission ratio range is 8.35. But the description of the present invention is only exemplary in nature, can greatly change each gear speed ratio and speed ratio interval by adjusting the value of K value, thus deformation and improvement will be in the scope of the present invention without departing from the gist of the present invention. within range.

Claims (4)

1. An eleven-speed transmission, comprising a planetary row, an input member (23), an output member (24), a connecting member, a clutch and a brake, characterized in that: there are four planetary rows, and they are single planetary gears The first planetary row (25) includes the first ring gear (1), the first planetary carrier (2), the first sun gear (3), the second planetary row (26) includes the second ring gear (4), The second planetary carrier (5), the second sun gear (6), the third planetary row (27) includes the third ring gear (7), the third planetary carrier (8), the third sun gear (9), the fourth The planetary row (28) includes the fourth ring gear (10), the fourth planet carrier (11), and the fourth sun gear (12); there are four connecting members, which are the first connecting member (19), the second A connecting member (20), a third connecting member (21) and a fourth connecting member (22); there are four clutches, namely the first clutch (13), the second clutch (14), the third clutch (15 ) and the fourth clutch (16); there are two brakes, namely the first brake (17) and the second brake (18); The first connecting member (19) fixedly interconnects the second sun gear (6) with the third sun gear (9); The second connecting member (20) fixedly interconnects the second planet carrier (5) with the fourth sun gear (12); The third connecting member (21) fixedly interconnects the second ring gear (4) and the third planet carrier (8); The fourth connecting member (22) fixedly interconnects the third ring gear (7) and the fourth planet carrier (11); The first clutch (13) interconnects the first planet carrier (2) with the first connecting member (19); The second clutch (14) interconnects the first planet carrier (2) with the third connecting member (21); The third clutch (15) interconnects the first sun gear (3) with the third connecting member (21); The fourth clutch (16) interconnects the first sun gear (3) with the fourth ring gear (10); said first brake (17) interconnects said first connecting member (19) with a fixed member; The second brake (18) interconnects the second connection member (20) with a fixed member. 2. Transmission according to claim 1, characterized in that the input member (23) is fixedly interconnected with the first sun gear (3) and the output member (24) is connected with the fourth A member (22) is fixedly interconnected, said fixed member being fixedly interconnected with said first ring gear (1). 3. The transmission of claim 1, wherein the stationary member is a transmission housing. 4. The transmission according to claim 1, wherein the transmission establishes eleven forward speed ratios and one reverse speed ratio, specifically: When the first clutch (13) and the second brake (18) are combined, the first planet carrier (2) and the first connecting member (19) rotate together, and the second connecting member (20) brakes to realize the reverse gear; When the first clutch (13) and the second clutch (14) are combined, the first planet carrier (2) and the first connecting member (19) rotate together, and the first planet carrier (2) and the third connecting member (21) Rotate together to achieve first gear; When the second clutch (14) and the first brake (17) are combined, the first planet carrier (2) and the third connecting member (21) rotate together, and the first connecting member (19) brakes to realize the second gear; When the second clutch (14) and the second brake (18) are combined, the first planet carrier (2) and the third connecting member (21) rotate together, and the second connecting member (20) brakes to realize the third gear; When the second clutch (14) and the fourth clutch (16) are combined, the first planet carrier (2) and the third connecting member (21) rotate together, the first sun gear (3) and the fourth ring gear (10) Co-rotate to achieve fourth gear; When the fourth clutch (16) and the second brake (18) are combined, the first sun gear (3) and the fourth ring gear (10) rotate together, and the second connecting member (20) brakes to realize the fifth gear; When the fourth clutch (16) is combined with the first brake (17), the first sun gear (3) and the fourth ring gear (10) rotate together, and the first connecting member (19) brakes to realize the sixth gear; When the first clutch (13) and the fourth clutch (16) are combined, the first planet carrier (2) and the first connecting member (19) rotate together, the first sun gear (3) and the fourth ring gear (10) Co-rotate to achieve seventh gear; When the third clutch (15) and the fourth clutch (16) are combined, the first sun gear (3), the third connecting member (21) and the fourth ring gear (10) rotate together to realize the eighth gear; When the first clutch (13) and the third clutch (15) are combined, the first planet carrier (2) and the first connecting member (19) rotate together, and the first sun gear (3) and the third connecting member (21) Co-rotate to achieve ninth gear; When the third clutch (15) and the first brake (17) are combined, the first sun gear (3) and the third connecting member (21) rotate together, and the first connecting member (19) brakes to realize the tenth gear; When the third clutch (15) and the second brake (18) are combined, the first sun gear (3) and the third connecting member (21) rotate together, and the second connecting member (20) brakes to realize the eleventh gear .