摘要:
A transmission includes an input shaft, an output shaft, at least three planetary gearsets, a variable-ratio unit, and at least nine clutches. The input shaft is configured to receive torque from a drive unit. The output shaft is configured to transmit torque to a load. The at least three planetary gearsets, the variable ratio-unit, and the at least nine clutches are arranged between the input shaft and the output shaft. The at least nine clutches are selectively engageable in combination with one another to select one of at least one reverse mode and at least four forward modes. The at least nine clutches include a first clutch engageable to couple the variable-ratio unit to one of the at least three planetary gearsets.
摘要:
An automatic transmission comprising a plurality of planetary gears (G1, G2, G3, G4) disposed between an input shaft (INPUT) and an output shaft (OUTPUT) and having a plurality of rotational elements (PC1, R1, R2, M3, S3, P3, S4, R4, M2), a plurality of frictional elements (B1, B2, B3, B4, C1, C2 C3, F1, F2) selectively engaged and released for controlling rotations and connections of the rotational elements (PC1, R1, R2, M3, S3, P3, S4, R4, M2) in accordance with instructions so as to realize a plurality of gear positions, rotational speed detecting means (S12; S22) for detecting a rotational speed of a predetermined one (M3) of the rotational elements (PC1, R1, R2, M3, S3, P3, S4, R4, M2), other than the input shaft (INPUT) and the output shaft (OUTPUT), and frictional element release means (S15; S25) for releasing all of the plurality of frictional elements (B1, B2, B3, B4, C1, C2 C3, F1, F2) when it is judged that the rotational speed of the predetermined one of the plurality of rotational elements (PC1, R1, R2, M3, S3, P3, S4, R4, M2) is higher than a predetermined rotational speed.
摘要:
Das modulare, mit koaxialen Wellen versehene Getriebe gemäß der Erfindung betrifft den Maschinenbau, insbesondere Schrittschaltgetriebe, und kann im Transport- und Landwirtschaftswesen sowie im Werkzeugmaschinenbau verwendet werden. Dieses Getriebe umfasst koaxiale, antreibende und angetriebene Wellen, ein oder mehrere in einem Körper angeordnete Übertragungsmodule und steuerbare Elemente zur Änderung der Übersetzungen. Diese Module können in Zwei-, Drei- oder Vierübertragungsgliedform gemäß der Anzahl der Übertragungsglieder aufgebaut sein, die drehbar bewegbar sind und koaxial zueinander und zu den Getriebewellen angeordnet sind. Das Getriebe kann aus diesen Modulen gebildet sein, die in verschiedenen Kombinationen zusammengestellt sein können. Die steuerbaren Getriebeelemente weisen intermodulare Schalter, die am Moduleingang und/oder-ausgang angeordnet sind, und gehäuseförmige Schaltvorrichtungen für die Zwei-, Drei- oder Vierübertragungsgliedmodule auf. Die verschiedenen Glieder des Zwei-, Drei- oder Vierübertragungsgliedmoduls können in Form des Eingangs oder Ausgangs eines der Module und als Stützglied des Zwei-, Drei- oder Vierübertragungsgliedmoduls verwendet werden, wobei eine größere Anzahl von Übertragungsverhältnissen auf ein und demselben Modul erreichbar ist. Die Aufzählung der Übertragungsverhältnisse von mehreren Modulen sieht eine größere Anzahl von Getrieberädern im Getriebe mit der gleichen Anzahl von Gliedern vor.
摘要:
A transmission for a vehicle mainly includes a main transmission (M) and a differential gear mechanism (20). The main transmission has at least two rotating elements (11, 12; 13, 14) each set to a different gear ratio, and the differential gear mechanism has at least three elements (21, 22, 23). There are provided first input means (C-1, C-2) which selectively inputs an input rotation to two rotating elements of the main transmission, and second input means (1, 2, C-3; 1, 2, 4) which connects the two rotating elements to two elements (21, 22) of the differential gear mechanism and inputs the input rotation to the other at least one element (23). Accordingly, power transmission which transmits the input rotation to one rotating element of the main transmission through the differential gear mechanism, and power transmission which simultaneously transmits the input rotation to two rotating elements of the main transmission as different speed rotations via the differential gear mechanism can be performed by controlling the input means. The shifting with no torque escape can be performed by switching the power transmission. Further, since an intermediate gear ratio with respect to an individual gear ratio is generated by two rotating elements at a time of simultaneously transmitting power to two rotating elements, it is possible to increase a number of shift speeds by utilizing this.
摘要:
An automatic transmission having a gear train comprising first (1), second (2) and third (3) single-pinion planetary gear sets. The ring gear (1R) of the first single-pinion planetary gear set is connected integrally or selectively to the carrier (2C) of the second single-pinion planetary gear set, the carrier (1C) of the first single-pinion planetary gear set is connected integrally or selectively to the ring gear (3R) of the third single-pinion planetary gear set, and the sun gear (2S) of the second single-pinion planetary gear set is connected integrally or selectively to the sun gear (3S) of the third single-pinion planetary gear set. The automatic transmission is capable of being placed in any one of at least five forward gears and one reverse gear.
摘要:
A multiple-ratio automatic transmission comprising a first multiple-ratio gear unit (10) and a second simple planetary gear unit (12) arranged in series in a torque flow path, each gear unit having a reaction brake (38,48) that can be selectively activated and deactivated to effect a ratio change as the first gear unit is upshifted and the second gear unit is downshifted, ratio changes in each gear unit being effected by pressure-operated clutches and brakes, the brakes (30,48) having opposed pressure-apply and pressure-release chambers. Separate exhaust flow paths (ISR,OSR) are provided for a reaction brake release chamber and for a companion pressure-operated clutch. A pressure modifier valve circuit is provided for increasing the rate of response to a command for applying and releasing the clutch.
摘要:
An automatic transmission wherein a gear train is constituted by three single pinion type planetary gear sets, provided with a first planetary gear (1) set having a first sun gear (1S), a first ring gear (1R), and a first carrier (1C) holding pinion gears meshing with the first sun gear and the first ring gear, a second planetary gear (2) set having a second sun gear (2S), a second ring (2R) gear which is normally or selectively connected with the first carrier (1C), and a second carrier (2C) holding pinion gears meshing with the second sun gear and the second ring gear, a third planetary gear (3) set having a third sun gear (3S) normally or selectively connected to the second carrier (2C), a third ring gear (3R) which is continuously connected with the first carrier (1C), and a third carrier (3C) holding pinion gears meshing with the third sun gear (3S) and the third ring gear (3R) and connected to the output shaft (5), a first clutch means (K1) which selectively connects the input shaft (4) and the first ring gear (1R), a second clutch means (K2) which selectively connects the first sun gear (1S) and the second carrier (2C), a third clutch means (K3) which selectively connects the input shaft (4) and the first sun gear (1S), a fourth clutch means (K4) which selectively connects the first sun gear (1S) and the second sun gear (2S), a first brake means (B1) which selectively stops the rotation of at least the third sun gear (3S) among the second carrier (2S) and the third sun gear (3S), a second brake means (B2) which selectively stops the rotation of the first sun gear (1S), and a third brake means (B3) which selectively stops the rotation of the second sun gear (2S), at least five forward speeds and one reverse speed being settable as transmission stages.
摘要:
Herein disclosed is an automatic transmission, in which a gear train including a plurality of planetary gear sets each composed of a sun gear, a carrier and a ring gear is accommodated in a casing so that the transmission passages of a drive force from an input shaft (4) to an output shaft (5) may be changed to set a plurality of gears. The automatic transmission comprises: first brake means (B1) connected to the carrier (2C) of the first one of the plural planetary gear sets for fixing the same to the casing; first clutch means (K1) arranged at the same side as that of the connecting position of the carrier (2C) and the first brake means (B1) with respect to the first planetary gear set for connecting the carrier (2C) selectively to a rotating member such as the sun gear, carrier or ring gear of one of other planetary gear sets; and second clutch means (K2) arranged at the side of not the first clutch means (K3) but the first planetary gear set (1) for connecting the sun gear (1S) of the first planetary gear set (1) selectively to the rotating member.
摘要:
A gear train for changing the rotational speed of an input shaft (4) to transmit the resultant rotation to an output shaft (5) consists of single pinion type first (1) and third (3) planetary gear sets and a double pinion type second (2) planetary gear set. Ring gears of these three planetary gear sets are normally or selectively interconnected to each other, a carrier (1C) of the first planetary gear set is normally or selectively connected to a sun gear (3S) of the third planetary gear set, a sun gear (1S) of the first planetary gear set is normally or selectively connected to a sun gear (2S) of the second planetary gear set, and the sun gear (2S) of the second planetary gear set is normally or selectively connected to the carrier (1C) of the first planetary gear set, whereby at least five forward speeds and one reverse are permitted to be set.
摘要:
A gear train for changing the rotational speed of an input shaft (4) to transmit the resultant rotation to an output shaft (5) consists of single pinion type first (1) and third (3) planetary gear sets and a double pinion type second (2) planetary gear set. A sun gear (1S) of the first planetary gear system is normally or selectively connected to a carrier (3C) of the third planetary gear set, the carrier (3C) of the third planetary gear set is normally or selectively connected to a sun gear (2S) of the second planetary gear set, a carrier (1C) of the first planetary gear set is normally or selectively connected to a ring gear (3R) of the third planetary gear set, a ring gear (1R) of the first planetary gear set is normally or selectively connected to a ring gear (2R) of the second planetary gear set, the sun gear (2S) of the second planetary gear set is normally or selectively connected to a sun gear (3S) of the third planetary gear set, whereby at least five forward speeds and one reverse are permitted to be set.