A coolant pump module for an internal combustion engine is provided. The coolant pump module includes an inlet thermostat and a pump integrated into a single unit. The coolant pump module provides inlet and outlet of coolant to various cooling circuits.

Methods and systems to diagnose operation of an engine coolant pump are presented. In one example, the engine coolant pump is operated while an engine is stopped so that operation of the coolant pump may not effect engine operation. The engine coolant pump may be operated at different speeds to assess engine coolant pump operation.

A cooling device for an internal combustion engine is provided. The cooling device includes a first passage connected to the internal combustion engine and circulating a coolant, a second passage connected to the internal combustion engine and circulating the coolant, a heat exchanger provided on the first passage and configured such that heat exchange is performed with respect to the coolant, a first pump provided on the first passage, a second pump provided on the second passage and an electronic control unit controlling the first pump and the second pump. The electronic control unit, when a temperature of the coolant is no lower than a predetermined temperature, drives the first pump such that a flow rate of the coolant in the first passage increases as compared to when the temperature of the coolant is lower than the predetermined temperature, and performs first control of stopping the second pump.

A vehicle and method for vehicle noise reduction for vehicle occupants are provided. The method comprises detecting a position of a window of the vehicle; and controlling the duty of an operational component of the vehicle based on the position of the window of the vehicle and at least one of: a speed of the vehicle, and a presence of a sound-reflecting structure proximate to the vehicle; wherein the operational component is external to a cabin of the vehicle; and wherein noise generated by the operational component increases with a duty of the operational component.

A cooling system of a hybrid vehicle include an engine, a drive motor, a main water pump, a cooling line, a heat-exchange line, a heater line on which a heater and an exhaust heat recovery device are provided, a coolant control valve unit selectively supplying coolant to the cooling line, the heat-exchange line and the heater line, a bypass line connecting the rear of the exhaust heat recovery device and the front of the heater, an auxiliary water pump that selectively supplies coolant from the exhaust heat recovery device to the front of the heater, a state measurement unit that measures an operation state of the vehicle and outputs a corresponding signal, and a controller configured for controlling operation of the engine, the drive motor, the main water pump, the coolant control valve unit and the auxiliary water pump according to the output signal of the state measurement unit.

An electromagnetic silicone oil water pump clutch, comprising: a water pump body, a pump shaft, an electromagnetic solenoid coil, a belt pulley, a coupling shaft sleeve, a driven disc, a spring piece, a coupling disc, a driving disc, and a silicone oil cavity shell. The pump shaft is provided at the center of the water pump body; a fixing plate is provided at one end of the water pump body; the electromagnetic solenoid coil is provided on the fixing plate; the belt pulley is provided on the water pump body; the silicone oil cavity shell is pressed and riveted on one side of the belt pulley; the coupling shaft sleeve is fixed to one end of the pump shaft; the spring piece is provided on the outer side of the coupling shaft sleeve; the coupling disc is provided on the spring piece.

An engine control system for an engine includes: a pump control module configured to control a coolant pump; a block control module configured to control opening of a block valve; a fuel control module configured to control fueling of the engine; a coolant control module configured to control a position of a coolant valve; and an adjustment module configured to, when the coolant pump is pumping, the block valve is open, and the coolant valve is positioned such that an input is connected to an output, adjust the fueling of the engine such that fueling of the engine is fuel rich.

Methods and system for operating a vehicle cooling system are described. In one example, the vehicle cooling system cools a heat generating device via a fan and pump. A speed of the fan is commanded by a feedback controller with possible neural network predictive control to track a variable temperature reference that is based on thermal load estimation. A disturbance observer may be applied to observe thermal load and an observer-based observer may be used to generate the temperature reference so that the power consumption of a fan is minimized.

A hybrid pump apparatus (100) having a pump subassembly having an inlet and an outlet an electrical drive (110) arranged to selectively drive the pump subassembly, a mechanical drive comprising a driven member (104) configured to receive a drive torque; and a clutch (160) in a load path between the driven member and the pump subassembly, the clutch being movable between a first condition in which the driven member drives the pump subassembly and a second condition in which the driven member can rotate freely relative to the pump sub assembly in which the clutch is a dog clutch.

Methods and system for operating a vehicle cooling system are described. In one example, the vehicle cooling system cools a heat generating device via a fan and pump. A speed of the fan is commanded by a feedback controller with possible neural network predictive control to track a variable temperature reference that is based on thermal load estimation. A disturbance observer may be applied to observe thermal load and an observer-based observer may be used to generate the temperature reference so that the power consumption of a fan is minimized.