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    HYDRAULIC BRAKING SYSTEM FOR FARM TRACTORS OR THE LIKE AND METHOD OF MANAGING SUCH SYSTEM
    2.
    发明申请
    HYDRAULIC BRAKING SYSTEM FOR FARM TRACTORS OR THE LIKE AND METHOD OF MANAGING SUCH SYSTEM 有权
    用于农用拖拉机的液压制动系统或类似的管理系统

    公开(公告)号：US20150314761A1

    公开(公告)日：2015-11-05

    申请号：US14651290

    申请日：2013-11-27

    Applicant: VHIT S.P.A.

    Inventor： Leonardo Cadeddu

    IPC: B60T8/40 ,  B60T8/32

    CPC classification number: B60T8/4013 ,  B60T8/328 ,  B60T8/348 ,  B60T8/46 ,  B60T13/143 ,  B60T15/36 ,  B60T17/221 ,  B60T17/222

    Abstract: A hydraulic braking system for a farm tractor or the like comprises a first portion, including members (10, 19) for actuating/modulating the braking and operating with a first hydraulic fluid, and a second portion comprising braking members (F) and operating with a second hydraulic fluid incompatible with the first one. An interface device (20) is interposed between the two portions and is arranged to separate the two portions of the system (1) and to prevent fluid passages therebetween. A method of managing such a braking system (1) is also provided.

    Abstract translation: 用于农用拖拉机等的液压制动系统包括第一部分，包括用于致动/调节制动并用第一液压流体操作的构件（10,19），以及包括制动构件（F）并且与 与第一液压流体不兼容的第二液压流体。 接口装置（20）插入在两个部分之间，并且被布置成分离系统（1）的两个部分并且防止其间的流体通道。 还提供了一种管理这种制动系统（1）的方法。

    VARIABLE DISPLACEMENT PUMP WITH DOUBLE ECCENTRIC RING AND DISPLACEMENT REGULATION METHOD
    3.
    发明申请
    VARIABLE DISPLACEMENT PUMP WITH DOUBLE ECCENTRIC RING AND DISPLACEMENT REGULATION METHOD 有权
    具有双偏心环和位移调节方法的可变位移泵

    公开(公告)号：US20150050173A1

    公开(公告)日：2015-02-19

    申请号：US14386229

    申请日：2013-03-13

    Applicant: VHIT S.P.A.

    Inventor： Leonardo Cadeddu

    IPC: F04C14/22 ,  F04C2/344

    CPC classification number: F04C14/226 ,  F04C2/3441 ,  F04C2/3446 ,  F04C14/223 ,  F04C18/3441 ,  F04C18/3446 ,  F04C18/3564

    Abstract: A rotary positive displacement pump for fluids, in particular for the lubrication oil of a motor vehicle engine (60), has a displacement that can be regulated by means of the rotation of a stator ring (112) having an eccentric cavity (113) in which the rotor (15) of the pump (1) rotates. The stator ring (112) is located in an eccentric cavity (13) of an external ring (12), which is configured as a multistage rotary piston for displacement regulation and is arranged to be directly driven by a fluid under pressure, in particular oil taken from a delivery side (19) of the pump or from a point of the lubrication circuit located downstream the oil filter (62). The invention also concerns a method of regulating the displacement of the pump (1) and a lubrication system for the engine of a motor vehicle in which the pump (1) is used.

    Abstract translation: 用于流体的旋转容积式泵，特别是用于机动车辆发动机（60）的润滑油的位移泵具有能够通过具有偏心腔（113）的定子环（112）的旋转来调节的位移 其中泵（1）的转子（15）旋转。 定子环（112）位于外环（12）的偏心腔（13）中，其被配置为用于位移调节的多级旋转活塞，并且被布置成由压力下的流体（特别是油）直接驱动 从泵的输送侧（19）或从位于油过滤器（62）下游的润滑回路的点取出。 本发明还涉及一种调节泵（1）的位移的方法和用于其中使用泵（1）的机动车辆的发动机的润滑系统。

    Diagnostic system for a lubrication circuit
    4.
    发明授权
    Diagnostic system for a lubrication circuit 有权

    公开(公告)号：US11208925B2

    公开(公告)日：2021-12-28

    申请号：US16652339

    申请日：2018-10-15

    Applicant: VHIT S.p.A. Societa Unipersonale

    Inventor： Alessandro Fauda ,  Gabriele Andreolli ,  Leonardo Cadeddu ,  Luciano Marchetti ,  Pietro Francesco Crosio

    IPC: G01N33/28 ,  F01M1/18 ,  F01M11/10 ,  F16N29/04

    Abstract: A diagnostic system for a lubrication circuit of an internal combustion engine of a vehicle. The system includes a viscometer for detecting the viscosity of a lubricating liquid of the lubrication circuit, a temperature sensor for detecting the temperature of the lubricating liquid, and a control unit to acquire the state of the lubricating liquid, given by the viscosity detected for a given lubricating liquid condition, which includes the lubricating liquid temperature and the date of last replacement of the lubricating liquid, and for a given condition of use of the engine, and to assess the state of the lubricating liquid by comparing the detected viscosity of the lubricating liquid with the viscosity reference values stored in the database in the same or similar condition of lubricating liquid temperature, date of last replacement of the lubricating liquid and use of the engine.

    LUBRICATION SYSTEM FOR A ROTARY VACUUM PUMP
    6.
    发明申请
    LUBRICATION SYSTEM FOR A ROTARY VACUUM PUMP 审中-公开
    旋转真空泵的润滑系统

    公开(公告)号：US20150345496A1

    公开(公告)日：2015-12-03

    申请号：US14655416

    申请日：2013-12-13

    Applicant: VHIT S.P.A.

    Inventor： Leonardo Cadeddu

    IPC: F04C29/02 ,  F04C25/02 ,  F04C18/06 ,  F04C15/00 ,  F04C2/06

    CPC classification number: F04C29/02 ,  F04C2/06 ,  F04C15/0088 ,  F04C18/06 ,  F04C18/3441 ,  F04C25/02 ,  F04C29/028

    Abstract: A lubrication system (200) for a rotary vacuum pump (300) connectable to a thermal engine comprises a suction duct (50) connecting the pump (300) to a power brake (16), and a connecting duct (23) connecting the inside of the engine with the suction duct (50) in order to generate, through the connecting duct (23), a flow of an air-oil mixture sucked from the inside of the engine. A pump having a casing (40) which defines a pumping chamber (44) and a connecting duct (23) formed in the casing (40), and a lubrication method for such a pump are also provided.

    Abstract translation: 用于可连接到热引擎的旋转式真空泵（300）的润滑系统（200）包括将泵（300）连接到动力制动器（16）的吸入管道（50）和连接到内燃机 的发动机，以便通过连接管道（23）产生从发动机内部吸入的空气 - 油混合物的流动。 一种具有限定泵送室（44）的壳体（40）和形成在壳体（40）中的连接管道（23）的泵以及这种泵的润滑方法。

    METHOD FOR CONTROLLING THE SUPPLY OF OIL TO AN INTERNAL COMBUSTION ENGINE
    7.
    发明申请
    METHOD FOR CONTROLLING THE SUPPLY OF OIL TO AN INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20190264590A1

    公开(公告)日：2019-08-29

    申请号：US16348536

    申请日：2017-10-25

    Applicant: Robert Bosch GmbH ,  VHIT S.p.A. Societa Unipersonale

    Inventor： Alessandro Fauda ,  Leonardo Cadeddu ,  Steffen Meyer-Salfeld

    IPC: F01M11/10 ,  F01M1/16 ,  F01M1/02 ,  F01M1/10

    Abstract: Method for controlling the supply of oil to an internal combustion engine, comprising a procedure for detecting a potentially dangerous condition for the correct operation of an internal combustion engine (1). Said condition is the clogging of an oil filter (3) upstream of the engine (1) or the excessive presence of fuel in the lubricant oil. The detection procedure comprises the steps of: changing the flow rate of oil that transits through the filter (3) and that is processed by a pump (2) for lubricating the engine (1); detecting the time that passes between changing the oil flow rate and a detection of a pre-established variation in a parameter connected at least with the pressure downstream of said filter (3), said variation being determined by said change of the flow rate, said filter (3) being placed upstream of the engine (1); comparing said time with pre-established values.

    HYDRAULIC DEVICE FOR CONTROLLING BRAKING FOR FARM VEHICLES AND THE LIKE
    9.
    发明申请
    HYDRAULIC DEVICE FOR CONTROLLING BRAKING FOR FARM VEHICLES AND THE LIKE 审中-公开

    公开(公告)号：US20190001945A1

    公开(公告)日：2019-01-03

    申请号：US16064071

    申请日：2016-12-07

    Applicant: VHIT S.P.A.

    Inventor： Leonardo Cadeddu

    IPC: B60T13/14 ,  B60T11/236

    CPC classification number: B60T13/145 ,  B60T11/236

    Abstract: A hydraulic device for controlling braking for farm tractors, earthmovers and like machines, comprises a master cylinder and brake booster. A piston of the brake booster defines first and second chambers which, under rest conditions, are in communication and, during braking, are cut off with the first chamber being put in communication with a discharge chamber of the master cylinder. The piston of the master cylinder is driven by a drive piston shaped to define with a plunger of the piston of the brake booster a hollow space through which the first chamber communicates with either the second chamber or the discharge chamber, depending on device operating conditions. In the plunger, a seat for a gasket-valve is arranged to cooperate with the drive piston, during braking, to prevent fluid leakage between the second and the first chamber as a consequence of the sliding of the drive piston caused by braking.

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