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    SPRING RETURN THROTTLE ACTUATOR, METHOD OF CONTROL THEREOF AND THROTTLE ASSEMBLY
    2.
    发明申请
    SPRING RETURN THROTTLE ACTUATOR, METHOD OF CONTROL THEREOF AND THROTTLE ASSEMBLY 审中-公开

    公开(公告)号：US20190011057A1

    公开(公告)日：2019-01-10

    申请号：US16066636

    申请日：2016-12-12

    Applicant: Scania CV AB

    Inventor： Fredrik STRÅÅT ,  Sebastian ZAMANI

    IPC: F16K31/04 ,  F02D9/10 ,  H02P3/12 ,  H02P6/08 ,  H02P6/17 ,  H02P6/24

    Abstract: A spring return throttle actuator including: an electric, plural-coil DC motor having an output shaft, a throttle return spring, a gear transmission connected to the output shaft, a control unit adapted to control power supply to the DC motor, wherein the spring return throttle actuator has a movement range between closed throttle and opened throttle. The control unit is arranged to short-circuit at least two DC motor coils in order to create a DC motor return resist torque, and the return spring is balanced such that generated spring return torque over the whole movement range of the actuator does not exceed said DC motor return resist torque. The invention also relates to a method and a throttle assembly.

    SPRING RETURN THROTTLE ACTUATOR, METHOD OF CONTROL THEREOF AND THROTTLE ASSEMBLY
    3.
    发明申请
    SPRING RETURN THROTTLE ACTUATOR, METHOD OF CONTROL THEREOF AND THROTTLE ASSEMBLY 审中-公开

    公开(公告)号：US20190024592A1

    公开(公告)日：2019-01-24

    申请号：US16066611

    申请日：2016-12-12

    Applicant: Scania CV AB

    Inventor： Fredrik STRÅÅT ,  Sebastian ZAMANI

    IPC: F02D9/10 ,  F02D11/10 ,  F16K31/04 ,  F16K37/00 ,  H02P6/17 ,  H02P6/182

    Abstract: A spring return throttle actuator including: an electric, plural-coil DC motor having an output shaft, a throttle return spring, a gear transmission connected to the output shaft, a control unit adapted to control power supply to the DC motor, wherein the spring return throttle actuator has a movement range between closed throttle and fully opened throttle. The control unit includes a monitoring circuit adapted to monitor DC motor movement. The monitoring circuit is configured to receive signals from at least one voltage sensor adapted to sense voltage induced in at least one of the DC motor coils during a spring forced return of the throttle, and the monitoring circuit is configured to create a representation of DC motor movement based on said signals.

    SPRING RETURN THROTTLE ACTUATOR, METHOD OF CONTROL THEREOF AND THROTTLE ASSEMBLY
    4.
    发明申请
    SPRING RETURN THROTTLE ACTUATOR, METHOD OF CONTROL THEREOF AND THROTTLE ASSEMBLY 审中-公开

    公开(公告)号：US20190010877A1

    公开(公告)日：2019-01-10

    申请号：US16066624

    申请日：2016-12-12

    Applicant: Scania CV AB

    Inventor： Fredrik STRÅÅT ,  Sebastian ZAMANI

    IPC: F02D11/10 ,  F02D9/10 ,  G01D5/14 ,  F16K31/04 ,  F16K1/22

    Abstract: A spring return throttle actuator including: an electric, plural-coil DC motor having an output shaft, a throttle return spring, a gear transmission connected to the output shaft, a control unit adapted to control power supply to the DC motor, wherein the spring return throttle actuator has a movement range between closed throttle and opened throttle. The control unit is arranged to short-circuit at least two DC motor coils in order to create a DC motor return resist torque, and the control unit includes a movement monitoring circuit being arranged to monitor actuator movement forced by the throttle return spring and resisted by the DC motor return resist torque. The invention also relates to a method and a throttle assembly.

    METHOD AND SYSTEM FOR DIAGNOSING AN AFTERTREATMENT SYSTEM
    5.
    发明申请
    METHOD AND SYSTEM FOR DIAGNOSING AN AFTERTREATMENT SYSTEM 有权

    公开(公告)号：US20210293172A1

    公开(公告)日：2021-09-23

    申请号：US16316318

    申请日：2017-07-06

    Applicant: Scania CV AB

    Inventor： Mikael LUNDSTRÖM ,  Sebastian ZAMANI ,  Carl WAHLSTRÖM

    IPC: F01N11/00 ,  F01N3/20

    Abstract: The present invention relates to a method for diagnosing aftertreatment of exhaust gases resulting from combustion, wherein at least a first substance resulting from said combustion is reduced by supplying additive to an exhaust gas stream resulting from said combustion and use of a first reduction catalytic converter. The method includes: estimating an accumulated expected reduction of said first substance during a first period of time, determining an accumulated actual reduction of said first substance during a period of time at least substantially overlapping said first period of time, and generating a signal indicating a fault in said reduction of said first substance when said accumulated actual reduction differs from said accumulated expected reduction by a predetermined difference in occurrence of said first substance. The invention also relates to a corresponding system.

    CYLINDER DETECTION IN A FOUR-STROKE INTERNAL COMBUSTION ENGINE
    6.
    发明申请
    CYLINDER DETECTION IN A FOUR-STROKE INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20200025123A1

    公开(公告)日：2020-01-23

    申请号：US16465796

    申请日：2017-11-28

    Applicant: Scania CV AB

    Inventor： Sebastian ZAMANI ,  Andrey GROMOV ,  Hans SVENSSON ,  Ulrik ERIKSTAM ,  Anders LARSSON

    IPC: F02D41/34 ,  F02D41/00

    Abstract: An arrangement for cylinder detection in a four-stroke internal combustion engine is disclosed. The arrangement comprises a first disc connected to a crankshaft, the first disc comprising a first mark (M11-M13) within each an interspace angle (α), and a second disc connected to a camshaft and comprising one second mark (M21-M26) per number of cylinders. The first mark (M11-M13) is arranged on a first disc, or the plurality of first marks (M11-M13) are arranged in relation to each other on the first disc, and the second marks (M21-M26) are arranged in relation to each other on the second disc such that for each interspace angle (α) the relevant first mark (M11-M13) is detectable by a first sensor and the relevant second mark (M21-M26) is detectable by a second sensor at different relative rotational positions between the first disc and the second disc.

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