A temperature control system for a vehicle, comprising a main circuit comprising a tubing in which there is provided a coolant, a main circuit pump configured to pump said coolant through the tubing of the main circuit in a first direction. Connected in parallel to the main circuit are a first and second sub-circuit for cooling or heating of components connected thereto. In the sub-circuits there are provided first and second pumps that pump coolant through said sub-circuits from a first end to second end at which the respective sub-circuit is connected the main circuit. The first end is downstream the second end as seen in the first direction in the first circuit.

A method for the control of a hydraulic system of a motor vehicle is provided. A high-pressure branch is fed by a main oil pump which is driven by an internal combustion engine. The high-pressure branch or a low-pressure branch is fed by an additional oil pump depending on a switch position of a switching valve. The additional oil pump is used for feeding the high-pressure branch or the low-pressure branch depending on a total volume flow demand and on the volume flow available from the main oil pump. A nominal rotation speed of an electric motor which drives the additional oil pump is determined based on a volume flow balance, a valve status of the switching valve, a low-pressure pump map or a high-pressure pump map. Depending on the valve status, either the low-pressure pump map or the high-pressure pump map is used to determine the nominal rotation speed.

Cooling systems of a work vehicle that provide targeted cooling, regenerative cooling and/or a combination therein. A cooling system includes plural fans configured to provide airflow across a radiator and a fan controller in communication with the plural fans. The fan controller is configured to receive operating condition data associated with at least one of the radiator and an engine. The fan controller is configured to determine a total target heat rejection value based on the operating condition data; determine a plurality of target fan operation values for the plural fans, based on the total target heat rejection value and the operating condition data; and control operation of the plural fans at plural independent fan speeds based on the plural fan operation values.

An engine cooling system in a vehicle comprises a first coolant circuit and a second coolant circuit connecting an engine to a radiator. A thermostat is arranged in the first coolant circuit and is arranged to be closed during engine warm-up, to prevent flow through the first coolant circuit. The cooling system further comprises a bypass circuit connecting the thermostat to the second coolant circuit and at least one parallel circuit. Each parallel circuit is connected to the second coolant circuit upstream of the bypass circuit, wherein a partial coolant flow is directed from the bypass circuit and upstream through the second coolant circuit into the at least one parallel circuit during engine warm-up. The disclosure further relates to a method for controlling such an engine cooling system.

An agricultural harvester includes an IC engine, a grain tank, and a fluid cooling system for at least one component onboard the agricultural harvester. The fluid cooling system has a cooling package positioned between the IC engine and the grain tank. The cooling package includes a housing, and a plurality of cooling units arranged in a side-to-side manner within the housing, transverse to a fore-aft direction of the harvester.

A cooling system for an internal combustion engine is provided. The cooling system comprises: a cooling passage provided within an engine housing of the engine, the cooling passage configured to carry a bulk flow of coolant to cool the engine housing, wherein the bulk flow of coolant within the cooling passage is driven by convection or a pump; and one or more additional cooling passages provided within the engine housing, each configured to introduce a flow of coolant into the cooling passage; one or more additional cooling passage pumps configured to pump coolant within the additional cooling passages; wherein the engine housing comprises one or more high temperature regions, which are at a higher temperature than one or more low temperature regions of the engine housing; and wherein the additional cooling passages are configured to direct the introduced coolant towards the one or more high temperature regions.

A seawater cooling system adapted to mitigate salt crystallization in a seawater cooling loop. The system may include a pump operatively connected to the cooling loop and configured to pump seawater through the cooling loop, a temperature sensor operatively connected to the cooling loop and configured to monitor a temperature of the seawater in the cooling loop, and a controller operatively connected to the temperature sensor and to the pump, the controller configured to issue a warning and to increase a speed of the pump if it is determined that the monitored temperature of the seawater exceeds a predetermined threshold temperature.

A hybrid vehicle has an internal combustion engine and an electric drive, each with a cooling circuit with a heat transfer medium and a cooler. A pre-heating circuit is provided between the cooling circuits and it is thermally coupled to the cooling circuit of the electric drive via heat coupling element as a shared component, for a controlled heat exchange between the heat transfer media of the two cooling circuits. The pre-heating circuit has an electrical auxiliary heater, which is connected to the heat coupling element in series, such that the heat transfer medium of the first cooling circuit likewise flows through the electrical auxiliary heater. The electrical auxiliary heater is arranged and designed such that heat generated by the electrical auxiliary heater can be transferred, where necessary, into at least one of the two cooling circuits.

An apparatus includes two pumps and a circuit-changing valve connected to two cooling circuits, with the valve being controlled by a pressure differential created by the pumps. This simplifies controls, reduces components of the pumping system, and also provides a backup pump for each system. The valve's spool is controlled so that when the first pump is started before the second pump (or it generates a higher fluid pressure), the valve causes the two pumps to be connected in a serial arrangement with fluid being pumped through the first circuit and then through the second circuit. But when the second pump is started before the first pump, the valve causes the two pumps to be connected in a parallel arrangement so that the first pump moves fluid only through the first circuit, and the second pump moves fluid only through the second circuit. The valve includes an anti-dithering device.

Methods and systems are provided for a coolant circuit. In one example, the coolant circuit comprises high and low-temperature radiators, where only one pump is configured to conduct coolant through the entire coolant circuit.