• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Powershift transmission (1) for a motor vehicle, with a main transmission (2) in the form of a dual-clutch transmission and with a downstream transmission (3) in the form of a planetary gearset connected downstream from the main transmission (2), wherein the main transmission (2) comprises a first partial transmission (6) and a second partial transmission (7), with a first main transmission input shaft (8) for the first partial transmission, with a separate, second main transmission input shaft (9) for the second partial transmission, with at least one first, interlocking shifting element of the first partial transmission, with at least one second, interlocking shifting element of the second partial transmission, with a first frictional powershift clutch (Kl) associated with the first main transmission input shaft, with a second frictional powershift clutch (K2) associated with the second main transmission input shaft, and with at least one main transmission output shaft (10) common to both partial transmissions, wherein the downstream transmission (3) has a downstream transmission input shaft (15) to which, by means of a third, interlocking shifting element (F) the, or each main transmission output shaft (10) can be coupled, and which is connected fixed to a first planetary gearset element (11) of the downstream transmission (3), wherein the downstream transmission (3) has a downstream transmission output shaft (5), which is connected fixed to a second planetary gearset element (12) of the downstream transmission (3), wherein a third planetary gearset element (13) of the downstream transmission (3) can be coupled to a transmission housing (14) by means of a fourth, interlocking shifting element (L) or to the output shaft (5) of the downstream transmission by means of a fifth, interlocking shifting element (H), and wherein the, or each main transmission output shaft common to the two partial transmissions of the main transmission can be coupled by means of a sixth, interlocking shifting element (G) to the third planetary gearset element (13) of the downstream transmission, which can be coupled by means of the fourth, interlocking shifting element to the transmission housing (14).Fig. 1
    公开号:SE1550318A1
    申请号:SE1550318
    申请日:2015-03-17
    公开日:2015-09-22
    发明作者:Johannes Kaltenbach
    申请人:Zahnradfabrik Friedrichshafen；
    IPC主号:
    专利说明:

    Fig. 1 1 Powershift transmission and method for its operation The invention concerns a powershift transmission and methods for its operation.
    DE 10 2007 047 671 Al describes a powershift transmission for a motor vehicle, having a main transmission in the form of a dual-clutch transmission and a downstream transmission in the form of a planetary gearset connected downstream from the main transmission. The main transmission comprises a first partial transmission and a second partial transmission, where a first main transmission input shaft of the first partial transmission is associated with a first frictional powershift clutch and a separate, second main transmission input shaft of the second partial transmission is associated with a second frictional powershift clutch. Each of the two partial transmissions of the main transmission in the form of a dual-clutch transmission comprises, respectively, at least one interlocking shifting element. For the two partial transmissions a common main transmission output shaft is provided. The downstream transmission in the form of a planetary gearset comprises a downstream transmission input shaft and a downstream transmission output shaft. The output shaft of the main transmission can be coupled by means of an interlocking shifting element to a first planetary gearset element of the downstream transmission. A second planetary gearset element of the downstream transmission is connected fixed to the output shaft of the downstream transmission. A third planetary gearset element of the downstream transmission can be coupled by means of further interlocking shifting elements either to a transmission housing or to the output shaft of the downstream transmission and therefore also to the second planetary gearset element, which is connected in a fixed manner to the output shaft of the downstream transmission.
    In the powershift transmission known from DE 10 2007 047 671 All the downstream transmission, which is in the form of a planetary gearset, serves exclusively as a fixed gear ratio, so that only non power-branched gears can be obtained.
    Starting from there, the purpose of the present invention is to provide a new type of powershift transmission in which, in addition to non power-branched gears, superposition 2 gears too, and therefore power-branched gears can be used, with methods for operating the transmission.
    This objective is achieved by a powershift transmission according to Claim 1. According to the invention the, or each common main transmission output shaft for the two partial transmissions of the main transmission can be coupled by means of a sixth interlocking shifting element to the third planetary gearset element of the downstream transmission, which can be coupled to the transmission housing by means of the fourth, interlocking shifting element.
    In the downstream transmissions according to the invention, both non power-branched and power-branched gears, the latter called superposition gears, can be obtained and used.
    In an advantageous further development the powershift transmission provides at least one first superposition gear in which both of the frictional powershift clutches are closed, in order to enable driving by the formation of a first force or torque flow path starting from the first powershift clutch, via the first partial transmission and into the first planetary gearset element, and at the same time by the formation of a second force or torque flow path starting from the second powershift clutch, via the second partial transmission and into the third planetary gearset element, so that in this case the fourth and fifth shifting elements are both open.
    Such a superposition gear, in which both frictional powershift clutches are closed, is particularly suitable for use in trucks driving up a slight incline.
    Preferably the powershift transmission has at least one second superposition gear in which only one of the frictional powershift clutches is closed, in order to enable driving by forming a first force or torque flow path starting from the respective closed powershift clutch, via the first partial transmission and into the first planetary gearset element, and at the same time by forming a second force or torque flow path starting from the closed powershift clutch, via the second partial transmission and into the third planetary gearset element, such that in this case the fourth shifting element and the fifth shifting element are both open.
    权利要求:
    Claims (13)
    [1] 1. 3 The, or each superposition gear enables a finer gradation of the gear intervals, namely when the High driving range is active in the downstream transmission. Such finely graded gear intervals are, in particular, appropriate while driving at an approximately constant speed, since the rotational speed of the drive aggregate can be adjusted more finely so that the drive aggregate can be operated in a fuel-saving manner. In an advantageous further development, the fifth shifting element is an interlocking shifting element. In this variant, in which there are only two interlocking shifting elements, a particularly preferred and simpler structure of the powershift transmission with a particularly preferred mode of operation can be provided. Methods for the operation of the powershift transmission according to the invention are disclosed in Claims 7 to 13. These methods are preferably used in combination with one another in a powershift transmission according to the invention. Preferred further developments emerge from the subordinate claims and the description given below. Example embodiments of the invention, to which it is not limited, are explained in more detail with reference to the drawing, which shows:
    类似技术:
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    同族专利:
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    US20150267810A1|2015-09-24|
    CN204573064U|2015-08-19|
    US9279498B2|2016-03-08|
    DE102014205275A1|2015-09-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN107539100A|2016-06-29|2018-01-05|比亚迪股份有限公司|Power-driven system and vehicle|DE10260179A1|2002-12-20|2004-07-01|Zf Friedrichshafen Ag|Multi-speed gearbox for road vehicle has divided load path with odd-numbered gears in first path and even-numbered gears in second path and has double input clutch and additional clutch at output|
    DE102005018978B4|2005-04-23|2015-10-01|Bayerische Motoren Werke Aktiengesellschaft|Multi-speed gearbox with power split|
    DE102007047671A1|2007-10-05|2009-04-09|Daimler Ag|Dual clutch transmission device|
    DE102008031456B4|2008-07-05|2021-05-27|EGS Entwicklungsgesellschaft für Getriebesysteme mbH|Powershift transmission|
    DE102008054477A1|2008-12-10|2010-06-17|Zf Friedrichshafen Ag|Automated multi-group transmission of a motor vehicle|
    DE102009046620A1|2009-11-11|2011-05-19|Zf Friedrichshafen Ag|Switching device and method for switching control of an automated group transmission|
    DE102011088396A1|2011-12-13|2013-06-13|Zf Friedrichshafen Ag|Double clutch|
    DE102012213667A1|2012-08-02|2014-02-06|Zf Friedrichshafen Ag|Translation stage of a multi-step transmission, as well as multi-step transmission|DE102013202045A1|2013-02-07|2014-08-07|Zf Friedrichshafen Ag|Group transmission of a motor vehicle|
    JP6265014B2|2014-04-04|2018-01-24|アイシン精機株式会社|Automatic transmission for vehicle|
    JP2016053378A|2014-09-03|2016-04-14|いすゞ自動車株式会社|Dual clutch type transmission|
    CN106481748B|2015-08-28|2019-04-26|长城汽车股份有限公司|Double-clutch speed changer and vehicle with it|
    SE540450C2|2015-10-06|2018-09-18|Scania Cv Ab|A method for controlling a gearbox, a gearbox and a vehicle provided with such a gearbox|
    EP3165389B1|2015-11-03|2018-12-26|ZF Friedrichshafen AG|Transmission for a motor vehicle and powertrain comprising it|
    DE102019210847A1|2019-07-22|2021-01-28|Deere & Company|transmission|
    法律状态:
    2018-01-09| NAV| Patent application has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014205275.0A|DE102014205275A1|2014-03-21|2014-03-21|Power shift transmission and method for operating the same|
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