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    Air conditioning system for vehicle with refrigerant circuit and compressor of variable displacement which is controlled and output amount alters in reaction to displacement control signal
    4.
    发明专利
    Air conditioning system for vehicle with refrigerant circuit and compressor of variable displacement which is controlled and output amount alters in reaction to displacement control signal 未知

    公开(公告)号：DE10053426A1

    公开(公告)日：2001-05-10

    申请号：DE10053426

    申请日：2000-10-27

    Applicant: SANDEN CORP

    Inventor： KAMEI SATOSHI ,  INOUE ATSUO ,  TSUBOI MASATO ,  SUGAWARA KEI

    IPC: B60H1/00 ,  B60H1/32 ,  F25B49/02

    Abstract: A control unit (26) computes the displacement of the compressor (18) according to data from the unit (25) and the detection units (22,23) of the refrigerant circuit operating condition and for controlling the displacement of the compressor (18) so that the temp. (Te), which indicates the heat exchangeability, approximating to the desired value (TV). A first value (A,C) and a second value (B,D) higher than the first value (A,C) are adjusted in the control unit (26) in relation to the operating condition of the refrigerant circuit (17), and for restricting an excessive control of the compression of the compressor. The control unit (26) controls the displacement of the compressor at two positions, if the operating condition of the refrigerant circuit (17) goes in a region between the first and the second adjusted value (A,C;B,D). So that one of the positions is a position corresp. to a first displacement control value, which is computed by the control unit. The other position is a position corresp. to a second displacement value, which is predetermined and is smaller than the first displacement control value.

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