An air cooling system for a vehicle engine includes an air intake configured to receive intake air for delivery to the engine, a first coolant loop thermally coupled to the air intake to provide cooling to the intake air, and a pump for circulating coolant through the first coolant loop. A second coolant loop is thermally coupled to the air intake to provide further cooling to the intake air, and undergoes a vapor compression cycle. A compressor circulates coolant through the second coolant loop. The first and second coolant loops are separate loops using a common condenser. A passive variable charge enabler assembly is configured to remove coolant circulating in the system when the compressor is on.

A cooling control system for an internal combustion engine, which is capable of circulating engine coolant while suppressing power consumption by an engine coolant pump as much as possible. The cooling control system is provided for cooling intake gases increased in temperature by being pressurized by a supercharger. The engine coolant pump of the electrically-driven type delivers engine coolant to thereby cause the same to circulate. An ECU controls, when a difference between the temperature of the engine coolant and a first target temperature is not larger than a first predetermined value, the amount of the engine coolant to be delivered to a predetermined minimum flow rate, and controls, when the difference is larger than the first predetermined value, the amount of the engine coolant to be delivered such that it becomes larger as the difference is larger.

A system for controlling condensation associated with a vehicle engine air supply includes a shutter assembly configured to selectively allow airflow through the shutter assembly. An air supply cooler is configured to provide intake air to an engine. The air supply cooler is situated near the shutter assembly such that air flowing through the shutter assembly is incident on an exterior of the air supply cooler. A controller determines when at least one condition exists that is conducive to condensation within the air supply cooler and controls the shutter assembly to alter an amount of air incident on the exterior of the air supply cooler for controlling condensation in the air supply cooler.

Examples of the present disclosure describe systems and methods for determining an estimated ambient air temperature in an environment in which a vehicle is operating. The estimated ambient air temperature may be compared to an ambient temperature sensor value. The comparison may be used to determine whether an ambient air temperature sensor of the vehicle is functioning properly or if an error notification or fault code should be triggered.

Examples of the present disclosure describe systems and methods for determining a state of an air diverter valve of an air induction system of a vehicle. The determined state of the air diverter valve may be based on an intercooler-based estimated ambient air temperature and a comparison between an ambient air temperature sensor value and a pre-compressor sensor value.

An engine system includes an engine, an intake line, an exhaust line, a turbocharger, a water-cooled intercooler, a high-pressure Exhaust Gas Recirculation (EGR) system which includes a high-pressure EGR line, a high-pressure EGR cooler, and a high-pressure EGR valve, a low-pressure EGR system which includes a low-pressure EGR line, and a low-pressure EGR cooler, a radiator which cools the coolant, a low-pressure EGR cooling line, an intercooler cooling line, a low-pressure EGR cooling valve, an intercooler cooling valve, an electric water pump, a driving information detector which detects driving information of a vehicle including an outside air temperature, a temperature of the intake gas supplied to the engine and a coolant temperature, and a controller which controls the low-pressure EGR cooling valve, the intercooler cooling valve, the high-pressure EGR valve and the electric water pump based on the driving information detected by the driving information detector.

A compound engine assembly including an air conduit having an inlet in fluid communication with ambient air around the compound engine assembly, a compressor having an inlet in fluid communication with the air conduit, an engine core including at least one rotary internal combustion engine and having an inlet in fluid communication with an outlet of the compressor, a turbine section having an inlet in fluid communication with an outlet of the engine core and configured to compound power with the engine core; and at least one heat exchanger in fluid communication with the air conduit, each heat exchanger configured to circulate a fluid of the engine assembly in heat exchange relationship with an airflow from the air conduit circulating therethrough. A method of supplying air to a compound engine assembly is also discussed.

A method for spraying a fluid onto a charge air cooler of a motor vehicle includes measuring a first temperature with the aid of a first sensor of the motor vehicle; measuring a second temperature with the aid of a second sensor of the motor vehicle; comparing the first temperature with a first reference temperature by a controller of the motor vehicle; comparing the second temperature with a second reference temperature by the controller of the motor vehicle if the first temperature is higher than the first reference temperature or equal to the first reference temperature; and spraying at least some of the fluid onto the charge air cooler during a spray-on cycle if the second temperature is higher than the second reference temperature or equal to the second reference temperature.

Methods and systems are provided for adjusting engine operation based on wirelessly received weather data in conjunction with engine sensor outputs. In one example, a method may comprise receiving a first measurement of a weather parameter from one or more engine sensors and a second measurement of the weather parameter from weather data, the weather data provided by a wireless weather service. The method may further comprise determining accuracies for the first and second measurements, generating an estimate of the weather parameter based on the accuracies of the first and second measurements, and adjusting at least one engine operating parameter based on the generated estimate.

Methods and systems for an engine intake system are provided. In one example, a system includes a first charge air cooler arranged upstream of a second charge air cooler. The first charge air cooler is configured to provide thermal transfer between a compressed charge air and a fresh intake air.