A method for controlling an internal combustion engine cooling system includes pumping coolant in an engine cooling loop with a coolant pump, pumping the coolant in an air cooler loop that includes a liquid-to-liquid heat exchanger with the coolant pump, and receiving a condition signal indicative of at least one condition associated with the internal combustion engine. The method also includes, based on the condition signal, adjusting a position of a flow control valve to modify a flow of coolant to the liquid-to-liquid heat exchanger.

Systems and devices are disclosed for controlling fluid flow to piston cooling nozzles with a fluid flow control device configured to open when an internal combustion engine requires piston cooling at high speed but remains open for a period of time after the engine speed drops below a threshold to prevent heat soak damage to the pistons.

A generator set configured to provide an electrical output to an external electrical load. The generator set includes an engine configured to drive an electric generator, the engine including an engine block, where the electric generator is configured to couple to the external electrical load. The generator set includes a heating system in fluid communication with the engine block, the heating system including an electric fluid heater, where the electric jacket fluid includes a resistive load configured to supplement the external electrical load. The generator set includes a control system for: monitoring a first parameter of the engine; generating a first control signal in response to the first parameter being less than a first threshold; and increasing the external electrical load by turning on the electric fluid heater in response to the first control signal.

A method and a system for controlling a vehicle cooling system includes: a velocity prediction unit makes a prediction of at least one future velocity profile v.sub.pred for the vehicle; a temperature prediction unit predicts at least one future temperature profile T.sub.pred for at least one component in the vehicle, based on at least tonnage for the vehicle; information related to a section of road ahead of the vehicle and on the at least one future velocity profile v.sub.pred. A cooling system control unit controls the cooling system based on the at least one future temperature profile T.sub.pred and on a limit value temperature T.sub.comp.sub._.sub.lim for the respective at least one component in the vehicle so that a number of fluctuations of an inlet temperature T.sub.comp.sub._.sub.fluid.sub._.sub.in.sub._.sub.radiator for the cooling fluid flow into the radiator is reduced and/or so that a magnitude of the flow into the radiator is reduced when a temperature derivative dT/dt for the inlet temperature T.sub.comp.sub._.sub.fluid.sub._.sub.in.sub._.sub.radiator exceeds a limit value dT/dt.sub.lim for the temperature derivative.

A fan control system for a variable pitch fan of a work vehicle includes a first sensor that measures a parameter of a cooling system and a blade pitch module that adjust a pitch of a plurality of blades of the variable pitch fan to generate airflow in a first direction. A reversing module selectively commands a fan reversal that includes instructing the blade pitch module to temporarily adjust the pitch of the plurality of blades to generate airflow in a second direction. A first timer module, in response to the reversing module commanding the fan reversal, resets and increments a first timer and compares the first timer to a first threshold. A first reversal prevention module, in response to the first timer being less than the first threshold, prevents the reversing module from commanding a fan reversal by indicating that a first type of fan reversal is not permitted.

The present invention relates to a technology that can simultaneously control the flow rate of a coolant and perform variable separate cooling by controlling the opening rate of a flow control valve. The flow control valve has an inlet port connected to a coolant outlet of a cylinder block and a plurality of outlet ports connected to a cooling inlet port of an engine such that the opening rate of a first outlet port is symmetrically changed in a first direction and a second direction from a mid-operation angle of the entire operation section of the flow control valve.

A fan control system for a variable pitch fan of a work vehicle includes a first sensor that measures a parameter of a cooling system and a blade pitch module that adjust a pitch of a plurality of blades of the variable pitch fan to generate airflow in a first direction. A reversing module selectively commands a fan reversal that includes instructing the blade pitch module to temporarily adjust the pitch of the plurality of blades to generate airflow in a second direction. A first timer module, in response to the reversing module commanding the fan reversal, resets and increments a first timer and compares the first timer to a first threshold. A first reversal prevention module, in response to the first timer being less than the first threshold, prevents the reversing module from commanding a fan reversal by indicating that a first type of fan reversal is not permitted.

A method of controlling a fluid heater control system for a locomotive, the fluid heater control system including a heater assembly including a water pump and a heating element, the method including determining if a fuel pump of the locomotive is on, if the fuel pump is off, activating the heater assembly, running the water pump for a first predetermined period of time, determining if a temperature of the fluid is greater than a first predetermined threshold, and if the temperature of the fluid is greater than the first predetermined threshold, deactivating the water pump for a second predetermined time period.

This grille shutter control device controls opening and closing of a grille shutter, taking into account not only the cooling performance of a vehicle, but also other performance aspects. The grille shutter control device is a grille shutter control device for controlling opening and closing of a grille shutter in a vehicle equipped with an internal combustion engine, wherein a control device includes: a logic selecting unit for selecting one logic from among a plurality of opening degree determining logics for determining an opening degree of a grille shutter, on the basis of an atmospheric temperature inside an exhaust pipe (K1) of an engine; and a logic executing unit for controlling opening and closing of the grille shutter by executing the one logic selected by the logic selecting unit.

Systems and devices are disclosed for controlling fluid flow to piston cooling nozzles with a fluid flow control device configured to open when an internal combustion engine requires piston cooling at high speed but remains open for a period of time after the engine speed drops below a threshold to prevent heat soak damage to the pistons.