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21. 发明申请

WO2023285980A1 ELECTRIC PROPULSION UNIT FOR SADDLE-TYPE VEHICLES HAVING TWO DRIVE WHEELS AND VEHICLE COMPRISING THE PROPULSION UNIT 审中-公开
公开(公告)号：WO2023285980A1
公开(公告)日：2023-01-19
申请号：PCT/IB2022/056446
申请日：2022-07-13
申请人： PIAGGIO & C. S.P.A.
发明人： RAFFAELLI, Andrea , MARIOTTI, Walter
IPC分类号： F16F15/124 , F16F15/12 , F16D3/70 , H02K7/00 , H02K7/116 , B62K5/027 , B62K5/10 , B60K7/00
摘要： A saddle-type riding vehicle is described having an electric propulsion unit (9). The propulsion unit comprises a casing (23) and, inside the casing (23), a differential (33) connected to a left transmission axle-shaft (39a) and to a right transmission axle-shaft (39b), coaxial with each other and both rotating around a rotation axis (B-B); An electric motor (31) is provided, integral with the casing (23) and having a drive shaft (47) with a rotation axis (A-A) 90°-oriented with respect to the left axle-shaft (39a) and to the right axle-shaft (39b).

22. 发明申请

WO2021105915A1 CAMSHAFT WITH PHASING DEVICE FOR MULTICYLINDER INTERNAL COMBUSTION ENGINE WITH POPPET VALVES 审中-公开
公开(公告)号：WO2021105915A1
公开(公告)日：2021-06-03
申请号：PCT/IB2020/061170
申请日：2020-11-26
申请人： PIAGGIO & C. S.P.A
发明人： MARIOTTI, Walter
IPC分类号： F01L1/344 , F01L1/02 , F01L1/047
摘要： A camshaft (C1) for a multi-cylinder internal combustion engine with poppet valves (VRF1), comprising a main body (10), which is rotatable with respect to a first rotation axis, a first disk (11) and means of the hydraulic type for varying the timing of said first disk (11) with respect to said main body (10).

23. 发明申请

WO2018100163A1 COOLING SYSTEM FOR ENGINES 审中-公开
公开(公告)号：WO2018100163A1
公开(公告)日：2018-06-07
申请号：PCT/EP2017/081197
申请日：2017-12-01
申请人： PIAGGIO & C. S.P.A
发明人： MARIOTTI, Walter , FRESCHI, Giacomo
IPC分类号： F16D25/00 , F01P7/02
摘要： A cooling system of an internal combustion engine, e.g an air-cooled internal combustion engine, allows to actuate a fan, in passive way only depending upon the increase in the temperature inside the engine, wherein the fan (8) is keyed, by a clutch (11), to a end of an actuation shaft (4) having inside a housing (12) accomodating actuation means of the clutch (11) sensitive to the temperature of a fluid circulating in the engine, wherein said actuation means comprises a wax actuator (14) apt to operate said clutch (11), through a spring (19) arranged within said housing (12), interposed between said wax actuator (14) and said clutch (11), so as to shift said clutch (11) from a non-operational position to an operational position, to achieve the actuation of said clutch (11).

24. 发明申请

WO2018100151A1 AXIAL ACTUATION SYNCHRONIZER 审中-公开
公开(公告)号：WO2018100151A1
公开(公告)日：2018-06-07
申请号：PCT/EP2017/081176
申请日：2017-12-01
申请人： PIAGGIO & C. S.P.A
发明人： NUTI, Luca , MARIOTTI, Walter
IPC分类号： F16D23/14
摘要： An axial actuation synchronizer (20) for a transmission, requiring an activation force of reduced amount, comprises: a supporting plate (1), having a central opening, wherein an actuation end (2) of an axis (53) of the synchronizer (20) is arranged; a bell-like spring (3), substantially shaped like a cone, arranged on said supporting plate (1) so as to cover said central opening; a cam (6) connected to said actuation end (2) which rotates around an axis parallel or coincident with the axis of the synchronizer (20); a cam follower (9), determining an axial shifting of said cam (6) thereto it is associated in axial direction, so as to interfere with said actuation end (2) in opposition to the force exerted by the bell-like spring (3); and means for rotating selectively said rotating cam (9).

25. 发明申请

WO2018100147A1 HIGH PERFORMANCE SYNCHRONOUS TRANSMISSION 审中-公开
公开(公告)号：WO2018100147A1
公开(公告)日：2018-06-07
申请号：PCT/EP2017/081170
申请日：2017-12-01
申请人： PIAGGIO & C. S.P.A
发明人： MARIOTTI, Walter , LUCA, Nuti
IPC分类号： F16H63/18 , F16H3/093
摘要： A synchronous transmission (1) for a motorcycle comprises a primary shaft (51) of mechanical gearbox, and a pair of secondary shafts (52, 53) equipped with one or more secondary gearwheels for transmitting the motion to a hub shaft (75), wherein a desmodromic drum (70) actuates a pair of coupling forks (67, 68) selectively defining the position of respective sliding couplings (65, 66) between primary (51) and secondary shafts (52, 53) to select all speeds of the transmission, the desmodromic drum (70) being in phase with a device (80) for actuating the gearwheels, and wherein the coupling forks (67, 68) are equipped with a cam follower end (69) manoeuvred by said desmodromic drum (70) having a cylindrical surface (79) whereon a single desmodromic track (19) is formed.

26. 发明申请

WO2018100106A1 HIGH PERFORMANCE SYNCHRONOUS TRANSMISSION 审中-公开
公开(公告)号：WO2018100106A1
公开(公告)日：2018-06-07
申请号：PCT/EP2017/081062
申请日：2017-11-30
申请人： PIAGGIO & C. S.P.A
发明人： MARIOTTI, Walter , NUTI, Luca
IPC分类号： F16H3/093 , F16D23/12 , F16H7/02 , B62M7/12
摘要： A high performance synchronous transmission (1) to be used aboard a motorcycle for transmitting the motion generated by an engine to a driving wheel, between a crankshaft (2) and a hub shaft parallel therebetween and perpendicular to the median plane of the motorcycle, having a primary shaft (51) of mechanical gearbox equipped with a primary gearwheel (60), and a pair of secondary gearwheels (52, 53) equipped with one or more secondary shafts for transmitting the motion to a hub shaft (75), wherein the primary shaft (51) receives the motion through a driven pulley (17) which receives the motion by a driving pulley (13) connected to the crankshaft (2), an input clutch (40) being provided on the primary shaft.

27. 发明申请

WO2018100067A1 SYNCHRONIZED TRANSMISSION, IN PARTICULAR FOR MOTORCYCLES 审中-公开
公开(公告)号：WO2018100067A1
公开(公告)日：2018-06-07
申请号：PCT/EP2017/080991
申请日：2017-11-30
申请人： PIAGGIO & C. S.P.A.
发明人： NUTI, Luca , MARIOTTI, Walter
IPC分类号： B62M7/12 , F16D11/14 , F16D41/04 , F16D23/12
摘要： A synchronized transmission (200), which can be 5 used aboard a vehicle and in particular a motorcycle, wherein the craknkshaft (202) actuated by the engine (106) and the driven shaft, connected to a rear wheel (105), are substantially parallel therebetween, the driven shaft (205) receiving the 10 motion from a primary shaft (53) kinematically connected to the craknkshaft (202), wherein the primary shaft (53) has at least one toothed wheel (61), which transmits the motion to said driven shaft (205), arranged on a driven bushing (76) 15 assembled on the primary shaft (53), the primary shaft (53) comprising a passing-through axial channel (45) wherein an actuation stem (70) is inserted, comprising a clutch (74), acting on said driven bushing (76) and actuated axially through 20 said stem (70), which makes said driven bushing (76) integral to the motion transmission so as to exclude the reversibility of the free wheel (62) itself.

28. 发明申请

WO2017021352A1 THREE-SPEED MOTORCYCLE TRANSMISSION 审中-公开
标题翻译：三速电机传动
公开(公告)号：WO2017021352A1
公开(公告)日：2017-02-09
申请号：PCT/EP2016/068289
申请日：2016-08-01
申请人： PIAGGIO & C. S.P.A.
发明人： NESTI, Paolo , MARIOTTI, Walter
IPC分类号： F16H37/02 , F16H3/10 , F16H3/089 , B62M7/12
CPC分类号： F16H37/02 , B62M7/12 , F16H3/089 , F16H3/10 , F16H2200/0039
摘要： A three-speed motorcycle transmission (1), to be used aboard a motorcycle as transmission means for 5 transmitting the motion generated by an engine to a driving wheel, having performances similar to those of a continuously variable transmission but, at the same time, a high efficiency and an easy automatic operation, comprises: a crankshaft (2), which receives the motion by 0 an engine, having a first pulley (9) mounted thereon; a primary shaft (4), having a second pulley (12) and a first set of three gears (21, 22, 23) mounted thereon; a transmission belt (11) connecting said first and said second pulley (9, 12); a secondary shaft (4), connected 5 to a driving wheel, comprising a second set of three gears (31, 32, 33), engaged in pairs with respective gears (21, 22, 23) of the first set of three gears for the transmission of the first, second and third speed; a clutch (10) acting selectively on at least two pairs of 0 gears assigned to the transmission of the second and third speeds; and two free wheels (15, 18) arranged at the pairs of gears assigned to the transmission of the first and second speed.
摘要翻译：作为用于将发动机产生的运动传递到驱动轮的传动装置的摩托车上使用的三速摩托车传动装置（1），具有与无级变速器相似的性能，同时，高效率和易于自动操作的装置包括：具有安装在其上的第一滑轮（9）的发动机运动0的曲轴（2）主轴（4），具有安装在其上的第二滑轮（12）和第一组三个齿轮（21,22,23）; 连接所述第一和第二滑轮（9,12）的传动皮带（11）; 与驱动轮5连接的副轴（4），包括与第一组三个齿轮的相应齿轮（21,22,23）成对啮合的第二组三个齿轮（31,32,33），用于传输第一，第二和第三速度; 一个离合器（10），其有选择地作用于分配给第二和第三速度传动的至少两对0档; 以及布置在分配给第一和第二速度的传动的成对齿轮处的两个自由轮（15,18）。

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