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公开(公告)号：US12043074B2
公开(公告)日：2024-07-23
申请号：US17415375
申请日：2019-12-20
发明人： Walter Bruno , Piero Antonio Conti , Fabio Cotto , Marco Di Vittorio , Giordano Greco , Simone Marchetti
IPC分类号： B60G17/016 , B60G17/08
CPC分类号： B60G17/016 , B60G17/08 , B60G2400/102 , B60G2400/7162 , B60G2500/10 , B60G2600/184 , B60G2600/1873
摘要： A method for controlling the damping characteristic of a shock absorber of a vehicle, particularly for compensating the variation of the operating temperature of the shock absorber, in an active or semi-active suspension system. The compensation of the variation of the operating temperature of the shock absorber takes place by: estimating a mechanical power dissipated in heat by the shock absorber; estimating a thermal power exchanged by the shock absorber with the environment; evaluating the current operating temperature of the shock absorber as a function of the dissipated mechanical power and of the thermal power exchanged with the environment; and controlling the driving current of the control valve of the shock absorber according to a shock absorber reference model indicating a relationship between the damping force of the shock absorber, the operating temperature of the shock absorber and the driving current of the control valve.
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公开(公告)号：US20210164532A1
公开(公告)日：2021-06-03
申请号：US16770234
申请日：2018-12-07
摘要： A rotary damper includes a rotating input member rotating about a rotation axis; a first cylinder and a second cylinder coaxially arranged on opposite sides of the rotation axis; a first and a second pistons slidable inside the first and second cylinders and defining a first and a second working chambers containing incompressible working fluids, respectively; motion conversion mechanisms converting the rotary motion of the rotating input member about the rotation axis into reciprocating motion of the first and second pistons; a third cylinder; a fourth cylinder; and a third and fourth pistons, slidable inside the third and fourth cylinders, respectively and separating the inner volume of the respective cylinder into a respective main chamber in fluid communication with the first working chamber and auxiliary chambers; and the second working chamber and auxiliary chambers respectively.
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公开(公告)号：US20210291611A1
公开(公告)日：2021-09-23
申请号：US17267423
申请日：2019-08-08
发明人： Walter Bruno , Piero Antonio Conti , Fabio Cotto , Giordano Greco , Simone Marchetti , Marco Di Vittorio
IPC分类号： B60G17/0185 , B60G17/0165 , B60G17/019 , B60G17/018
摘要： A method for estimating damping characteristics of shock absorbers in an active or semi-active suspension involves providing a reference model of a nominal relation between a road severity index related to vertical acceleration values, and the mean driving current of the control valves of the shock absorbers, acquiring respective relative acceleration or speed data of at least the front wheels of the vehicle with respect to the vehicle body, determining a value of the road severity index starting from relative acceleration or speed data of the front wheels of the vehicle with respect to the vehicle body, acquiring values representative of the mean driving current of the control valve of each shock absorber, comparing acquired value of the mean driving current with an expected value of the nominal mean driving current determined as a function of the road severity index according to the reference model, and determining a degradation condition if the acquired value does not correspond to the expected value.
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公开(公告)号：US11761508B2
公开(公告)日：2023-09-19
申请号：US17263657
申请日：2019-07-26
CPC分类号： F16F9/185 , F16F9/34 , F16F9/46 , F16F9/516 , B60G13/08 , B60G2202/24 , B60G2204/62 , B60G2206/41 , B60G2500/104 , B60G2500/11 , B60G2800/162 , F16F2222/12 , F16F2228/066 , F16F2232/08 , F16F2234/02
摘要： A shock-absorber has a cylindrical body having an inner and an outer cylindrical tubes enclosing a reservoir chamber containing oil, and a rod. A piston divides the internal volume of the inner cylindrical tube into a rebound chamber and a compression chamber. The cylindrical body has an intermediate cylindrical tube enclosing with the inner cylindrical tube an intermediate chamber. A first electronically-controlled valve is arranged inside the inner cylindrical tube, so as to be drivingly connected to the rod, and hydraulically connected to the rebound chamber and to the compression chamber to adjust, during rebound phase, flow of the damping fluid from the rebound chamber to the compression chamber. A second electronically-controlled valve is arranged outside the cylindrical body and is hydraulically connected to the reservoir chamber and to the intermediate chamber to adjust, during compression phase, flow of the damping fluid from the compression chamber to the reservoir chamber via the intermediate chamber.
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公开(公告)号：US11365782B2
公开(公告)日：2022-06-21
申请号：US16770234
申请日：2018-12-07
IPC分类号： F16F9/06 , F16F9/34 , F16F9/58 , F16F13/00 , B60G13/08 , B60G13/14 , B60G15/06 , B60G17/08 , F16H21/54
摘要： A rotary damper includes a rotating input member rotating about a rotation axis; a first cylinder and a second cylinder coaxially arranged on opposite sides of the rotation axis; a first and a second pistons slidable inside the first and second cylinders and defining a first and a second working chambers containing incompressible working fluids, respectively; motion conversion mechanisms converting the rotary motion of the rotating input member about the rotation axis into reciprocating motion of the first and second pistons; a third cylinder; a fourth cylinder; and a third and fourth pistons, slidable inside the third and fourth cylinders, respectively and separating the inner volume of the respective cylinder into a respective main chamber in fluid communication with the first working chamber and auxiliary chambers; and the second working chamber and auxiliary chambers respectively.
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公开(公告)号：US20220082149A1
公开(公告)日：2022-03-17
申请号：US17299440
申请日：2019-12-03
摘要： A shock-absorber has an outer cylindrical tube, an inner cylindrical tube, a rod, a main piston and a hydraulic stop member received in a compression chamber and operating during an end section of the compression stroke of the shock-absorber to cause an increase in the hydraulic damping force. The hydraulic stop member has a cup-shaped body mounted in the compression chamber and a first auxiliary piston which is mounted on a cylindrical body rigidly connected to the main piston and is configured to sealingly slide in the cup-shaped body during an end section of the compression stroke, encompassing a working chamber with the cup-shaped body. A sliding member is slidably received inside the cylindrical body for opening or closing at least one first passage of the cylindrical body through which oil flows from the working chamber of the cup-shaped body to the compression chamber of the shock-absorber.
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公开(公告)号：US20230234417A1
公开(公告)日：2023-07-27
申请号：US17999758
申请日：2021-05-27
发明人： Marco Di Vittorio , Giordano Greco , Simone Marchetti , Piero Monchiero , Nicola Amati , Salvatore Circosta , Renato Galluzzi , Andrea Tonoli
IPC分类号： B60G17/015
CPC分类号： B60G17/0157 , B60G2204/4191 , B60R16/033
摘要： A vehicle is provided which has a vehicle body, at least one hub of a wheel, and a suspension connecting the hub to the vehicle body. The suspension has a suspension arm hinged to the vehicle body and to the hub, a spring, and an electromechanical rotary actuator operable between an active adjustment condition and a damping condition of the motion of the suspension, via a leverage.
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公开(公告)号：US11473645B2
公开(公告)日：2022-10-18
申请号：US17299440
申请日：2019-12-03
摘要： A shock-absorber has an outer cylindrical tube, an inner cylindrical tube, a rod, a main piston and a hydraulic stop member received in a compression chamber and operating during an end section of the compression stroke of the shock-absorber to cause an increase in the hydraulic damping force. The hydraulic stop member has a cup-shaped body mounted in the compression chamber and a first auxiliary piston which is mounted on a cylindrical body rigidly connected to the main piston and is configured to sealingly slide in the cup-shaped body during an end section of the compression stroke, encompassing a working chamber with the cup-shaped body. A sliding member is slidably received inside the cylindrical body for opening or closing at least one first passage of the cylindrical body through which oil flows from the working chamber of the cup-shaped body to the compression chamber of the shock-absorber.
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公开(公告)号：US20220055435A1
公开(公告)日：2022-02-24
申请号：US17415375
申请日：2019-12-20
发明人： Walter Bruno , Piero Antonio Conti , Fabio Cotto , Marco Di Vittorio , Giordano Greco , Simone Marchetti
IPC分类号： B60G17/016 , B60G17/08
摘要： A method for controlling the damping characteristic of a shock absorber of a vehicle, particularly for compensating the variation of the operating temperature of the shock absorber, in an active or semi-active suspension system. The compensation of the variation of the operating temperature of the shock absorber takes place by: estimating a mechanical power dissipated in heat by the shock absorber; estimating a thermal power exchanged by the shock absorber with the environment; evaluating the current operating temperature of the shock absorber as a function of the dissipated mechanical power and of the thermal power exchanged with the environment; and controlling the driving current of the control valve of the shock absorber according to a shock absorber reference model indicating a relationship between the damping force of the shock absorber, the operating temperature of the shock absorber and the driving current of the control valve.
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公开(公告)号：US11970040B2
公开(公告)日：2024-04-30
申请号：US17267423
申请日：2019-08-08
发明人： Walter Bruno , Piero Antonio Conti , Fabio Cotto , Giordano Greco , Simone Marchetti , Marco Di Vittorio
IPC分类号： B60G17/0165 , B60G17/018 , B60G17/0185 , B60G17/019 , G01M17/04
CPC分类号： B60G17/0185 , B60G17/0165 , B60G17/0182 , B60G17/01908 , G01M17/04 , B60G2202/24 , B60G2400/102 , B60G2400/202 , B60G2400/821 , B60G2500/11 , B60G2600/08 , B60G2600/184 , B60G2600/60 , B60G2800/70
摘要： A method for estimating damping characteristics of shock absorbers in an active or semi-active suspension involves providing a reference model of a nominal relation between a road severity index related to vertical acceleration values, and the mean driving current of the control valves of the shock absorbers, acquiring respective relative acceleration or speed data of at least the front wheels of the vehicle with respect to the vehicle body, determining a value of the road severity index starting from relative acceleration or speed data of the front wheels of the vehicle with respect to the vehicle body, acquiring values representative of the mean driving current of the control valve of each shock absorber, comparing acquired value of the mean driving current with an expected value of the nominal mean driving current determined as a function of the road severity index according to the reference model, and determining a degradation condition if the acquired value does not correspond to the expected value.
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