AN ARRANGEMENT AND A METHOD FOR CONTROLLING A SHUTDOWN PHASE OF A WHR-SYSTEM

    公开(公告)号:US20210003040A1

    公开(公告)日:2021-01-07

    申请号:US16979549

    申请日:2019-03-19

    Applicant: Scania CV AB

    Abstract: An arrangement and a method for controlling a shutdown phase of a WHR-system. The WHR system includes a main circuit (4) which includes a pump (3), an evaporator (5), an expander (7) and a condenser (10), and a compensation tank (12) which is configured to compensate for volume changes of a working fluid in the main circuit (4) during operation of the WHR system. The arrangement includes a control unit (26) configured to receive information when the shutdown phase of the WHR system is to be initiated and a flow device able to supply working fluid from the compensation tank (12) to the main circuit (4). The control unit (26) is configured to activate the flow device such that working fluid is supplied from the compensation tank (12) to the main circuit (4) when it receives information indication that the shutdown phase of the WHR system is to be initiated.

    A THERMOSTAT DEVICE FOR A COOLING SYSTEM AND A COOLING SYSTEM COMPRISING SAID THERMOSTAT DEVICE

    公开(公告)号:US20210025315A1

    公开(公告)日:2021-01-28

    申请号:US16977850

    申请日:2018-03-14

    Applicant: Scania CV AB

    Abstract: A thermostat device (8) for a cooling system in a vehicle. The device (8) includes a thermostat housing (15) enclosing a movably arranged valve body (16, 20, 34, 44). The valve body is configured to distribute coolant from a thermostat chamber (15a) to a radiator bypass line (9) and/or a radiator (11) in dependence on the position of the valve body. The device (8) has a first thermal expansion element (31) providing a first stroke of a valve body (16, 20, 34, 44) in response to the temperature of the coolant in a the pilot chamber (14a), and a second thermal expansion element (32) providing a second stroke of the valve body (16, 20, 34, 44) in response to the temperature of the coolant in the thermostat chamber (15a) such that the valve body (16, 20, 34, 44) is moved to a position defined by the strokes from the thermal expansion elements (31, 32). The pilot chamber (14a) has an outlet passage (14b) for directing coolant from the pilot chamber (14a) to the thermostat chamber (15a).

    A COOLING ARRANGEMENT FOR A WHR-SYSTEM
    4.
    发明申请

    公开(公告)号:US20170306806A1

    公开(公告)日:2017-10-26

    申请号:US15523533

    申请日:2015-11-04

    Applicant: Scania CV AB

    Abstract: A cooling arrangement for a WHR-system in a vehicle, includes a first cooling circuit including a first radiator (9) in which a circulating coolant is cooled, and a second cooling circuit including a second radiator (14) in which a coolant is cooled to a lower temperature than the coolant in the first radiator (9). A condenser inlet line (17, 38) directs coolant from one of the cooling circuits to a condenser (19) of the WHR-system, and a cooling adjusting device (13, 16, 24, 38) for adjusting the temperature of the coolant in the inlet line (17, 38) to the condenser (19) by the coolant in the other cooling circuit. An arrangement (37, 24) receives information about the cooling to estimates cooling for the working medium in the condenser (19) controls the adjusting arrangement (13, 16, 24, 38) such that the coolant in the condenser inlet line (17) provides the estimated suitable cooling of the working medium in the condenser (19).

    THERMAL MANAGEMENT SYSTEM, POWERTRAIN, AND VEHICLE

    公开(公告)号:US20220234420A1

    公开(公告)日:2022-07-28

    申请号:US17618792

    申请日:2020-06-10

    Applicant: Scania CV AB

    Abstract: A thermal management system for a vehicle is disclosed, wherein the vehicle comprises an occupant compartment and a propulsion system configured to provide motive power to the vehicle. The system comprises a propulsion coolant circuit configured to cool at least a portion of the propulsion system, a heating circuit configured to heat the occupant compartment, and a heat pump circuit comprising a first evaporator in the propulsion coolant circuit and a condenser in the heating circuit. The propulsion coolant circuit comprises a connecting conduit connecting the propulsion coolant circuit to the heating circuit at a position upstream of the condenser, and a first valve configured to control flow of coolant through the connecting conduit. The present disclosure further relates to a powertrain for a vehicle, as well as a vehicle.

    AN ARRANGEMENT COMPRISING A WHR SYSTEM AND A METHOD FOR CONTROLLING SUCH AN ARRANGEMENT

    公开(公告)号:US20210215082A1

    公开(公告)日:2021-07-15

    申请号:US15734260

    申请日:2019-06-17

    Applicant: Scania CV AB

    Abstract: The present invention relates to an arrangement comprising a waste heat recovery system (WHR-system) and a method for controlling the arrangement. The arrangement comprises an expansion tank having a constant inner volume, first cooling means configured to cool the working fluid in the condenser and a control unit configured to control the first cooling means such that the working fluid is cooled to a desired condensation temperature in the condenser during operation of the WHR system. The arrangement comprises further a sub-cooler arranged in a position downstream of the condenser and second cooling means configured to cool the working fluid in the sub-cooler, and that the control unit is configured to control the second cooling means such that the working fluid receives a determined subcooling in the sub-cooler during operation of the WHR system.

    COOLING SYSTEM COMPRISING AT LEAST TWO COOLING CIRCUITS CONNECTED TO A COMMON EXPANSION TANK

    公开(公告)号:US20210156297A1

    公开(公告)日:2021-05-27

    申请号:US17045641

    申请日:2018-04-17

    Applicant: Scania CV AB

    Abstract: The present invention relates to a cooling system comprising a first cooling circuit cooling a first object, a second cooling circuit cooling a second object, an expansion tank, a first deaeration line directing coolant and air from the first cooling circuit to the expansion tank, and a second deaeration line directing coolant and air from the second cooling circuit to the expansion tank. The cooling system comprises further a deaeration valve configured to control the flow through the first deaeration line, a single expansion tank outlet line configured to direct all coolant in the expansion tank to the second cooling circuit and a connection line configured to direct coolant from the second cooling circuit to the first cooling circuit.

    A FAN ARRANGEMENT IN A VEHICLE
    8.
    发明申请

    公开(公告)号:US20200300153A1

    公开(公告)日:2020-09-24

    申请号:US15779292

    申请日:2016-12-13

    Applicant: Scania CV AB

    Abstract: A fan arrangement for a cooling module in a vehicle. The vehicle (6) has a radiator fan (10) providing an air flow through a flow passage (5) and the cooling module in an intended flow direction. The cooling module includes a radiator (3) and at least one further cooler (1, 2) arranged in an upstream position of the radiator (3) with respect to the intended flow direction through the flow passage (5). The fan arrangement includes at least one additional electrically driven fan (4). The additional electrically driven fan (4) is arranged in the flow passage (5) in a position downstream of the radiator (3) and upstream of the radiator fan (10) with respect to the intended flow direction through the flow passage (5). The electrically driven fan (4) is configured to provide an air flow through a restricted portion (18) of the flow passage (5) and the cooling module during certain occasions when the operating conditions include the radiator fan not being in operation.

    A METHOD FOR CONTROLLING A COOLING SYSTEM DELIVERING COOLANT TO HEAT EXCHANGER IN A VEHICLE

    公开(公告)号:US20180363538A1

    公开(公告)日:2018-12-20

    申请号:US16061357

    申请日:2017-01-11

    Applicant: Scania CV AB

    Abstract: A method for controlling a cooling system delivering coolant to a heat exchanger (18) in a vehicle (1). During operating conditions when a thermostat (6) in the cooling system is in the partly open position, the method comprises the steps of estimating a desired cooling temperature (T) of a medium in the heat exchanger (18), calculating the coolant flow rate ({dot over (m)}1) through a radiator (7b) and the coolant flow rate ({dot over (m)}2) through a radiator bypass line (9), calculating am coolant flow rate ({dot over (m)}3) and coolant temperature (t3) combination at 10 at which the medium in the heat exchanger (18) is cooled to a desired temperature (T), adjusting the flow regulating mechanism (23) such that coolant at the selected flow rate ({dot over (m)}3) and temperature (t3) combination is directed to the heat exchanger (18).

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