A system for controlling a fan in a vehicle having a heat exchanger may include defining first and second geographic areas and determining a geographic location of the vehicle. A processor may be programmed to send a signal to operate the fan in a first rotational direction to move air through the heat exchanger in a first direction, and to send a signal to the fan to operate it in a second rotational direction opposite the first rotational direction to move air through the heat exchanger in a second direction opposite the first direction when a plurality of conditions are met.

Various systems are provided for a turbocharger center housing. In one example, a center housing for a turbocharger includes an internal water jacket including at least two ports, and a selectively pluggable interconnect positioned within the internal water jacket that, when plugged, blocks flow in the internal water jacket between the at least two ports in a first direction and, when unplugged, enables flow in the internal water jacket between the at least two ports in the first direction. In this way, flow may be directed through the center housing via different flow path configurations.

Methods and systems are provided for preventing overheating of a power steering system. In one example, a method includes operating an engine cooling fan based on a steering wheel angle and an engine speed. The cooling fan may be operated for a duration based on the steering wheel angle and engine speed, thus eliminating the need for a dedicated power steering coolant temperature sensor.

The cooling device according to the present invention includes an electric water pump for circulating cooling water through an internal combustion engine of a vehicle, and controls the discharge flow rate of the electric water pump as follows. Until the cooling water temperature. TW reaches a warm-up completion determination temperature, the cooling device increases the discharge flow rate along with an increase of the cooling water temperature TW. After the cooling water temperature TW reaches the warm-up completion determination temperature, the cooling device controls the discharge flow rate so as to bring the combustion chamber wall temperature TCYL toward a target temperature. Thereby, the cooling device can warm up the internal combustion engine more efficiently, and improve the combustion performance of the internal combustion engine after the completion of warm-up.

An aircraft engine assembly having a turbo-compounded internal combustion engine having an engine shaft. A coolant cooler is fluidly connected to a coolant circuitry of the internal combustion engine and to the environment. A plenum is connected with the environment via the coolant cooler and via an air outlet. A fan is disposed adjacent the air outlet and is operable to drive an airflow from the environment into the plenum via the coolant cooler. The fan is spaced apart from the internal combustion engine in a direction perpendicular to the engine shaft. A method of defining a cooling air circulation is also discussed.

Methods and systems are provided for rapidly cooling an engine system of a vehicle at vehicle-off events. In one example, a method may include cooling the engine system via selecting whether to rotate a cooling fan in a first direction or a second direction based on an indication of whether temperature of the engine system decays at a faster rate under conditions where the cooling fan is rotated in the first direction as compared to the second direction, or vice versa. In this way, diagnostics that rely on static, low-noise conditions may be conducted for vehicle-off conditions that are not sufficiently long to allow for sufficient engine system cooling in a timeframe of the vehicle-off condition.

Systems and methods are provided and include an engine temperature sensor, an engine speed sensor, a switching arrangement, a radiator fan control module, and a pulse-width modulation module. The radiator fan control module calculates a required airflow of a radiator fan of the vehicle based on an engine temperature and calculates a required voltage to produce the required airflow of the radiator fan based on a size of the radiator fan. The radiator fan control module generates a control signal to increase a fan motor voltage of a radiator fan motor in response to the required voltage exceeding a battery voltage and generates the control signal to maintain a standard fan motor voltage of the radiator fan motor in response to the required voltage being less than the battery voltage. The pulse-width modulation module controls a switching operation of the at least one switch in accordance with the control signal.

Provided is an internal combustion engine, comprising at least one cooling device for cooling at least one operational liquid of the internal combustion engine during and/or after operation of the internal combustion engine. The at least one cooling device has at least one heat exchanger and lines for transporting the at least one operational liquid to and from the at least one heat exchanger. The heat exchanger exchanges heat with a cooling medium, which cooling medium has during the operation of the internal combustion engine a lower temperature than the at least one operational liquid of the internal combustion engine. Heat is exchanged by the heat exchanger between the at least one operational liquid and the cooling medium, which cooling medium has before and/or during a starting operation of the internal combustion engine a higher temperature than the at least one operational liquid of the internal combustion engine.

A vehicle drive-force transmitting apparatus including: a casing; a drive-force transmitting mechanism disposed in the casing; and first and second oil pumps configured to suck, through respective inlet ports thereof, oil stored in a bottom portion of a casing, such that the drive-force transmitting mechanism is lubricated by the oil pumped up by the first and second oil pumps. The casing is provided with a drain hole through which the oil stored in the bottom portion of the casing is to be discharged to an exterior of the casing. A position of opening of the inlet port of the first oil pump is lower than a position of a lower end of the drain hole, and a position of opening of the inlet port of the second oil pump is higher than the position of the lower end of the drain hole.

A method, system, and apparatus are provided for optimizing control of the rotational speed of a fan in a vehicle so as to reduce the aerodynamic drag of a vehicle in a given operating parameter, and accordingly, to improve fuel efficiency of operation of the vehicle. Certain exemplary embodiments include determining an optimized speed of rotation of a cooling fan of the vehicle for reducing overall fuel demand in given operating conditions, and controlling rotation speed of the fan at the optimized speed in order to minimize fueling demand of a prime mover of the vehicle.