A governing system of an engine coolant control system in which first and second portions of coolant are pumped from an engine to a regulator and back to the engine and from the engine to a radiator and back to the engine, respectively, is provided. The governing system includes a temperature sensor of the engine to sense coolant temperatures, an ambient temperature sensor of the radiator to sense ambient temperatures, a heating element disposed to heat the first portion of the coolant at one of a location upstream from the regulator and the regulator, a valve operably disposed along a section of piping through which the first portion of the coolant flows from the engine to the regulator and a controller which controls operations of the heating element and the valve in accordance with the readings of the temperature sensor of the engine and the ambient temperature sensor.

A heat radiation amount from the cooling water in the radiator is adjusted so that the temperature of the cooling water is less than a prescribed temperature that is a temperature higher than the threshold value if a load exerted on the internal combustion engine is not less than a predetermined load, while the heat radiation amount from the cooling water in the radiator is adjusted so that the heat radiation amount from the cooling water in the radiator is increased if the load exerted on the internal combustion engine is less than the predetermined load as compared with if the load exerted on the internal combustion engine is not less than the predetermined load.

The present disclosure provides an engine cooling system having a coolant temperature sensor, including a radiator disposed to release heat of coolant circulated in an engine; a coolant control valve unit controlling the coolant circulated in the radiator through opening rate of a valve having a coolant passage corresponding to the radiator; a second coolant temperature sensor sensing a coolant temperature at a coolant outlet side of the engine; a third coolant temperature sensor sensing the coolant temperature at the coolant outlet side of the radiator; and a control unit sensing second and third coolant temperatures through the second and third coolant temperature sensors, calculating a first coolant temperature at a coolant inlet side of the engine by calculating the second and third coolant temperatures, and calculating valve opening rate of the coolant control vale by using the first, second, and the third coolant temperature.

A multi-mode powertrain system is described, and includes an internal combustion engine having stop/start capability. A method for controlling the multi-mode powertrain system includes circulating coolant to a heater core via an engine fluidic circuit that includes a water jacket of the internal combustion engine when temperature of the coolant is less than an engine fluidic circuit upper temperature threshold and the engine is in an ON state. Coolant is circulated to the heater core via a bypass fluidic circuit that excludes the water jacket of the internal combustion engine when temperature of the coolant is greater than a bypass fluidic circuit lower temperature threshold when the engine is in an OFF state.

An engine cooling system has a coolant control valve unit and includes a cylinder head disposed on a cylinder block. The coolant control valve unit is configured to receive coolant from a coolant outlet side of the cylinder head to control coolant distributed to a heater and a radiator and to control coolant exhausted from the cylinder block. A control unit is configured to determine a heating priority mode according to operation conditions and to substantially open a first coolant passage corresponding to the heater by controlling the coolant control valve unit in the heating priority mode.

An exhaust purification system of an internal combustion engine comprises a filter 23 arranged in an exhaust passage 23 of an internal combustion engine in which a plurality of cylinders 61, 62, 63, 64 cooled by cooling water are provided and trapping particulate matter in exhaust gas, a wall temperature calculation part 51 configured to calculate or detect wall temperatures of a predetermined number of equal to or more than two cylinders among the plurality of cylinders, and a PM amount calculation part 52 configured to calculate an amount of particulate matter discharged from the plurality of cylinders to the exhaust passage based on the wall temperatures calculated or detected by the wall temperature calculation part.

A shutter system is provided for a vehicle having an internal combustion engine that receives forced intake air and is cooled by an engine coolant. The vehicle includes a charge air cooler system having an intercooler for cooling the intake air and an engine cooling system. The shutter system includes a shutter positioned downstream of the intercooler and an actuator for moving the shutter between first and second positions. The shutter system further includes a sensor for generating a signal associated with a temperature of the intake air and a processor for comparing the temperature to a threshold. The actuator moves the shutter to the first position in response to receiving the first signal when the temperature is below the threshold. The actuator moves the shutter to the second position in response to receiving the second signal when the temperature is above the threshold.

An engine cooling control apparatus, a system including the same, and a method thereof provide an engine cooling control apparatus including a processor configured to calculate a required fan rotation speed for controlling a cooling fan based on proportional integral (PI) control and a storage configured to store data acquired by the processor and an algorithm for driving the processor. The processor classifies a plurality of control regions depending on a coolant temperature and adjusts and outputs the required fan rotation speed for each of the control regions.

A cooling apparatus for an internal combustion engine includes a pump, a radiator, a flow rate adjustment valve, a bypass passage, and a controller. The flow rate adjustment valve includes a valve member that rotates to change an open degree of the flow rate adjustment valve and a valve member biasing component that biases the valve member in a valve-closing direction in which the open degree decreases. The valve member rotates in a valve-opening direction in which the open degree increases when a pressure difference increases between positions upstream and downstream of the valve member in a flow direction of coolant in the circulation circuit and rotate in the valve-closing direction when the pressure difference decreases. The controller increases the pump discharge amount as a target radiator flow rate that is a target of an amount of coolant passing through the radiator increases.

Methods, apparatus and systems for reducing engine idling of fuel-driven equipment, for example found on a wellsite and/or including hydraulic pumping systems are provided. In particular, systems and methods are provided for controlling the starting and shutdown of equipment powered by a fuel-driven engine, the system comprising of an energy accumulator comprising or consisting of one or more supercapacitors. The transmission, transmission fluid, or other components can be warmed to prolong time between engine restarts.