A thermostat includes a valve member. The valve member has an insertion hole. The insertion hole is constituted by a first protective member and a second protective member. A shaft of a jiggle valve extends through the insertion hole. The jiggle valve has a substantially spherical head connected to an end of the shaft. The head closes the insertion hole by contacting the peripheral edge of the opening of the insertion hole. The materials of the first protective member and the second protective member each have a Vickers hardness higher than that of the valve member, which is part of the valve member other than the protective members.

A temperature control system for an engine. The system includes a thermal storage expansion tank defining a thermally insulated interior volume for storing engine coolant. The system further includes a pump that pumps engine coolant that has exited the thermal storage expansion tank back into the thermally insulated interior volume of the thermal storage expansion tank and forces air out of the thermal storage expansion tank to store coolant in the thermally insulated interior volume when the engine is off.

There is provided a radiator reservoir tank including: a tank body that is connected to a radiator and that includes an inlet section and an accumulation section for cooling water; a first rib that is disposed inside the tank body, and that extends out from a side wall at one side of facing side walls of the tank body toward another side, and that partitions between the inlet section and the accumulation section, and that is provided with a gap to the side wall at the other side; and a second rib that is provided further toward the inlet section side or the accumulation section side than the first rib, that extends out from the side wall at the other side toward the one side, and that is provided with a gap to the side wall at the one side.

A bottom cover includes a plate portion including an inner-peripheral-edge portion defining an inlet, and a cooling duct including an upper wall and a pair of right and left sidewalls. The upper wall includes an upper-wall front portion inclined upward in the vehicle-height direction at a predetermined inclination angle, an upper-wall rear portion inclined upward in the vehicle-height direction at an inclination angle larger than the predetermined inclination angle of the upper-wall front portion, and the first upper-wall bent portion located at a boundary between the upper-wall front portion and the upper-wall rear portion. The rear ends of the right and left sidewalls, the rear end of the inner-peripheral-edge portion, and the rear end of the upper wall define an outlet.

Provided is a reserver tank for a motor vehicle, more particularly, a reserver tank for a motor vehicle including a lateral coupling portion for easy assembly and installation of the reserver tank in an internal portion of an engine room.

Methods and systems are provided for a ventilation arrangement. In one example, a system may include a compact ventilation arrangement arranged within a space between an intake manifold and a cylinder head. A pump of the ventilation arrangement arrange adjacent the cylinder head.

One general aspect includes a cap for a the overflow reservoir bottle, including a lower cup having a syncline void, said syncline void having by a wall extending above and below at least one surface of the lower cup. The cap also includes an upper cup with an anticline projection nesting adjacent to the syncline void of the lower cup, and said upper cup affixed to the lower cup, with at least one vent to permit gas to traverse the overflow reservoir bottle.

The invention relates to a cooling circuit (1) which comprises a first cooling loop I designed to provide thermal control of a first member and at least one second cooling loop II, III designed to provide thermal control of a second member; moreover, the cooling circuit (1) comprises a single degassing tank (6) in fluid connection with the first loop and with the at least one second cooling loop II, III and an isolating valve (70, 700) inserted between the degassing tank (6) and the at least one second cooling loop II, III designed for selectively blocking the flow between the degassing tank 6 and the at least one second cooling loop II, III.

Methods and systems are provided for estimating a cooling demand of a vehicle powertrain component and selecting a mode of operation of a vehicle cooling system based on the estimated cooling demands of the vehicle powertrain component and the energy usage of the cooling system components. Based on the selected operating mode, each of a radiator fan speed, a coolant system pump output, a vehicle grille shutter opening, and an opening of vents coupled to a powertrain component insulating enclosure may be concurrently adjusted to minimize the cooling parasitic losses while satisfying the cooling requirements of the vehicle.

A cooling system for a diesel engine. A surge tank defines a first coolant reservoir. A pump is operable when energized to drive a circulating flow of coolant through the diesel engine for cooling the diesel engine. A coolant channel is situated around a diesel exhaust fluid doser in an exhaust system extending from the diesel engine. A second coolant reservoir is positioned to maintain a dedicated gravity-fed coolant supply to the coolant channel situated around the diesel exhaust fluid doser when the pump is not energized. A vent line extends from the second coolant reservoir to the surge tank to allow venting from the coolant channel into the surge tank through the second coolant reservoir without evacuating liquid coolant from the coolant channel.