A system including startup, load, flow, and peak estimation modules. The startup module, during a startup period or in response to a startup of the engine, receives a temperature signal and generates a first condition signal. The load module determines a load on the engine and generates a second condition signal. The flow module, if the first condition signal indicates a temperature of the engine is less than a first predetermined temperature and if the second condition signal indicates the load is less than a predetermined threshold, operates a pump to circulate coolant during the startup period. The peak estimation module estimates a temperature of a hottest metal location on the engine. The flow module increases a speed of the pump if the temperature of the hottest metal location is greater than a second predetermined temperature or the load is greater than or equal to the predetermined threshold.

An object of a control method to control a direct injection internal combustion engine that directly injects fuel in a cylinder is to reduce an increase in PN caused by attachment of the fuel to a fuel injection valve distal end. The control method cools the fuel before a fuel temperature when the fuel passes through an injection hole on a fuel injection valve reaches a temperature at which an amount of attached fuel to the fuel injection valve distal end increases.

A pump assembly is fluidly coupled to a vehicle engine for moving a fluid. The pump assembly includes a pump housing and an impeller disposed in the pump housing for moving the fluid in the pump housing towards an outlet. Additionally, the pump assembly includes a valve assembly integrated with the pump housing. The valve assembly includes a barrel disposed in the pump housing and having at least one inlet, wherein the at least one inlet is configured to provide controlled flow of the fluid into the pump housing. A sleeve is rotatably coupled to the barrel for selectively controlling the flow of the fluid into the at least one inlet of the barrel. Additionally, the valve assembly includes an actuator assembly operably coupled to the sleeve and configured to rotate the sleeve between a first position and a second position.

An object of a control method to control a direct injection internal combustion engine that directly injects fuel in a cylinder is to reduce an increase in PN caused by attachment of the fuel to a fuel injection valve distal end. The control method cools the fuel before a fuel temperature when the fuel passes through an injection hole on a fuel injection valve reaches a temperature at which an amount of attached fuel to the fuel injection valve distal end increases.

A thermostat for controlling flow of a coolant fluid through an aperture, the thermostat including a temperature sensitive valve for controlling the opening and closing of the aperture, the temperature sensitive valve including: a valve body with a heat sensitive material and a displaceable pin; a flange configured to seal off the aperture, a support member; and a flexible member located between the flange and the support member; the thermostat further including a piston configured to control compression of the flexible member from a bottom end thereof; and a hydraulic pressure compensation element connected to the flange and configured to compensate for a hydraulic pressure exerted by the coolant fluid on a lid of the temperature sensitive valve.

An active thermal management system for a vehicle and a method of operating the system are provided. The active thermal management system may include, but is not limited to, an exhaust gas temperature sensor, an engine metal temperature sensor, an engine coolant output temperature sensor, an engine oil temperature sensor, a cooling system, and a controller, the controller configured to determine when the vehicle is in a tow/haul mode, operate the cooling system when at least one of the temperature of the exhaust gas, the engine metal, the coolant output from the engine and the temperature of the engine oil is greater than a predetermined temperature, and operate the cooling system to bypass a radiator when all of the temperature of the exhaust gas, the engine metal, the temperature of the coolant, and the temperature of the engine oil is lower than a predetermined low temperature.

A number of variations may include a fluid system comprising a fluid circuit and a pump wherein the fluid circuit diverges into a first path and a second path and converges back into a third path; wherein the fluid circuit further comprises at least one solenoid valve located near the convergence of the first path and the second path into the third path and wherein the solenoid valve is constructed and arranged to control fluid flow on its path in accordance with preset conditions of the fluid system.

A system and approach for development of setpoints for a controller of a powertrain system. The controller may be parametrized as a function of setpoints to provide performance variables that are considered acceptable by a user or operator for current operating conditions of the engine or powertrain. The controller may determine set point trajectories in real time during operation of the powertrain system and determine positions of manipulated variables do drive controlled variables to associated and determined set point trajectories. The present system and approach may determine set point trajectories for powertrain conditions on-line and in real time, whereas set point trajectories have previously been determined off-line for powertrain control.

A system for determining a remaining useful life of a cooling component operatively connected to a prime mover. A controller performs a thermal strain analysis that includes determining the power output of the prime mover based upon sensor signals, determining a temperature output of the prime mover based upon the power output, determining a temperature at each of the plurality of analysis locations based upon the temperature output, determining a temperature difference based upon the temperature at each respective one of the plurality of analysis locations, and determining a thermal strain based upon the temperature difference. The controller repeats the thermal strain analysis at time intervals over a period of time, determines an accumulated damage for the cooling component based upon the thermal strain from each thermal strain analysis, and determines a remaining useful life of the cooling component based upon the material characteristics and the accumulated damage.

A pump assembly is fluidly coupled to a vehicle engine for moving a fluid. The pump assembly includes a pump housing and an impeller disposed in the pump housing for moving the fluid in the pump housing towards an outlet. Additionally, the pump assembly includes a valve assembly integrated with the pump housing. The valve assembly includes a barrel disposed in the pump housing and having at least one inlet, wherein the at least one inlet is configured to provide controlled flow of the fluid into the pump housing. A sleeve is rotatably coupled to the barrel for selectively controlling the flow of the fluid into the at least one inlet of the barrel. Additionally, the valve assembly includes an actuator assembly operably coupled to the sleeve and configured to rotate the sleeve between a first position and a second position.