A second temperature adjustment medium branches and flows into the first branch flow path and the second branch flow path at the branching portion, the second temperature adjustment medium and the second temperature adjustment medium are merged at the merging portion and flow through the pressure feed flow path to be supplied to the first pump, and the second temperature adjustment medium circulates through the second temperature adjustment circuit. A valve device configured to adjust a flow rate of the second temperature adjustment medium flowing through the second branch flow path is provided in the second branch flow path between the branching portion and the heat exchanger. The control device is configured to control the valve device to block the second temperature adjustment medium from flowing through the second branch flow path when a failure of the heat exchanger is detected.

A second temperature adjustment medium branches and flows into the first branch flow path and the second branch flow path at the branching portion, the second temperature adjustment medium and the second temperature adjustment medium are merged at the merging portion and flow through the pressure feed flow path to be supplied to the first pump, and the second temperature adjustment medium circulates through the second temperature adjustment circuit. A valve device configured to adjust a flow rate of the second temperature adjustment medium flowing through the second branch flow path is provided in the second branch flow path between the branching portion and the heat exchanger. The control device is configured to control the valve device to block the second temperature adjustment medium from flowing through the second branch flow path when a failure of the heat exchanger is detected.

Disclosed herein is an integrated reservoir tank assembly for a vehicle. The integrated reservoir tank assembly for a vehicle includes an integrated reservoir tank in which an inner space is partitioned into a first chamber configured to store cooling water of a first cooling circuit and a second chamber configured to store cooling water of a second cooling circuit by a partition wall; a first electric water pump integrally coupled to the first chamber of the integrated reservoir tank and configured to transmit the cooling water stored in the first chamber along a cooling water line of the first cooling circuit; and a second electric water pump integrally coupled to the second chamber of the integrated reservoir tank and configured to transmit the cooling water stored in the second chamber along a cooling water line of the second cooling circuit.

Disclosed herein is an integrated reservoir tank assembly for a vehicle. The integrated reservoir tank assembly for a vehicle includes an integrated reservoir tank in which an inner space is partitioned into a first chamber configured to store cooling water of a first cooling circuit and a second chamber configured to store cooling water of a second cooling circuit by a partition wall; a first electric water pump integrally coupled to the first chamber of the integrated reservoir tank and configured to transmit the cooling water stored in the first chamber along a cooling water line of the first cooling circuit; and a second electric water pump integrally coupled to the second chamber of the integrated reservoir tank and configured to transmit the cooling water stored in the second chamber along a cooling water line of the second cooling circuit.

A valve device includes: a ball valve having a ball face shaped in a convex spherical surface; and a valve seat having a seat face shaped in a concave spherical surface. The seat face is pressed onto the ball face. The ball valve is rotated to open a valve by communicating a valve opening defined in the ball valve and a seat opening defined in the valve seat with each other, and to close the valve by stop the communication. A diameter of the seat opening Φ2 is smaller than a diameter of the valve opening Φ1. A curvature radius of the ball face R1 is smaller than or equal to a curvature radius of the seat face is R2.

Provided is a flow rate control valve capable of suppressing leakage of a fluid when the flow rate control valve completely closes a valve port as compared to a flow rate control valve that does not include a gap reducing portion being provided so as to partially reduce a gap between a valve body and a member opposed to the valve body, and a temperature control device using the flow rate control valve. The flow rate control valve includes: a valve main body including a valve seat, the valve seat having a columnar space and having one or a plurality of valve ports, which allow a fluid to flow therethrough and each have a rectangular cross section; a valve body being provided in a freely rotatable manner in the valve seat of the valve main body so as to open and close the one or the plurality of valve ports, the valve body having a cylindrical shape and having an opening formed in an outer peripheral surface of the valve body; a gap reducing portion being provided so as to partially reduce a gap between the valve body and a member opposed to the valve body; and drive means for driving the valve body to rotate.

A valve for a fluid system of a vehicle having a valve housing with valve housing openings, a valve body arranged so as to be rotatable about an axis of rotation, a valve seal, a valve drive, and a plurality of connecting pieces corresponding to the valve housing openings. The connecting pieces have a circular flow passage area in cross section at a free end of the respective connecting piece, and the valve housing openings, corresponding to the connecting pieces, each have a substantially rectangular cross section. The respective valve housing opening is larger than the flow passage area at the free end of the corresponding connecting piece, and the flow passage areas of the connecting pieces widen in a diffuser-like manner from the free end of the respective connecting piece to the respective corresponding valve housing opening and merge in a stepless manner into the respective valve housing opening.

A valve for a fluid system of a vehicle having a valve housing with valve housing openings, a valve body arranged so as to be rotatable about an axis of rotation, a valve seal, a valve drive, and a plurality of connecting pieces corresponding to the valve housing openings. The connecting pieces have a circular flow passage area in cross section at a free end of the respective connecting piece, and the valve housing openings, corresponding to the connecting pieces, each have a substantially rectangular cross section. The respective valve housing opening is larger than the flow passage area at the free end of the corresponding connecting piece, and the flow passage areas of the connecting pieces widen in a diffuser-like manner from the free end of the respective connecting piece to the respective corresponding valve housing opening and merge in a stepless manner into the respective valve housing opening.

A seal for use in a fluid control valve includes: a first, elastically deformable, plastic part; and a second plastic part configured as a hard seal element and connected to the first plastic part. The first and the second plastic parts form a seal assembly having a first frontal end configured to bear in a sealing manner on an actuatable valve body of the fluid control valve, and a second frontal end configured to bear in a sealing manner on a valve housing of the fluid control valve, wherein at least the first frontal end has a first end side having an encircling projecting bead configured to seal against the actuatable valve body.

A seal for use in a fluid control valve includes: a first, elastically deformable, plastic part; and a second plastic part configured as a hard seal element and connected to the first plastic part. The first and the second plastic parts form a seal assembly having a first frontal end configured to bear in a sealing manner on an actuatable valve body of the fluid control valve, and a second frontal end configured to bear in a sealing manner on a valve housing of the fluid control valve, wherein at least the first frontal end has a first end side having an encircling projecting bead configured to seal against the actuatable valve body.