527 results about "Outside air temperature" patented technology

A light assembly including a housing, a plurality of light emitting diodes (LED) on a circuit board, a lens, a lens cover and a heating board positioned within the housing. The heating board is positioned behind the lens and in front of LEDs within the housing, such that light from the LEDs shines through the heating board. The heating board also includes a sensor and a microcontroller to activate, deactivate and control the heating board in response to an outside air temperature.

In an air conditioning apparatus for a vehicle, a water / refrigerant heat exchanger is disposed at a refrigerant discharge side of a compressor of a refrigerant cycle, and a cooling unit for cooling a heat-generating unit with refrigerant having an intermediate pressure of the refrigerant cycle is disposed at a downstream refrigerant side of the water / refrigerant heat exchanger. The air conditioning apparatus includes an evaporator and a hot-water type heater core disposed in an air conditioning duct. In a cooling water circuit, an engine, a radiator and an electrical pump are disposed in addition to the water / refrigerant heat exchanger and the hot-water type heater core. Thus, refrigerant absorbs heat generated in the heat-generating unit, and is heat-exchanged with cooling water in the water / refrigerant heat exchanger after passing through the compressor. As a result, the heat-generating unit can be cooled sufficiently even when outside air temperature is high in the summer, and heating capacity can be effectively improved using heat generated from the heat-generating unit in the winter.

An air conditioner for a vehicle includes a vapor compression refrigeration cycle configured to have a heat pump cycle for heating air to be blown into an interior of a vehicle compartment, and a heating member for heating the air using a coolant of an internal combustion engine of the vehicle as a heat source. In the air conditioner, an operation request signal is output by an air conditioning controller to the internal combustion engine when an outside air temperature is lower than a predetermined threshold.

A weather radar system has bright band detection and compensation. The weather radar system determines that high reflectivity in weather is a bright band and reduces an encoded return level from the bright band to compensate for it on a display. The weather radar system detects the presence of the bright band using an inference system that uses outside air temperature, aircraft altitude, and an assumed lapse rate to estimate the bright band location relative to the aircraft and uses antenna elevation to estimate bright band range to reduce the encoded radar return level on the display. The weather radar system may also detect the presence of the bright band using a detection system that uses radar estimates from normal reflectivity scan operation of the system. The weather radar system may also use an active detection process separate from a normal radar sampling process to detect the bright band.

A weather radar system for improving output of potential lightning and hail weather conditions. An exemplary system includes a processor that receives and stores the weather radar reflectivity values into a three-dimensional buffer, receives an outside air temperature value, and determines freezing level based on the received outside air temperature value. The processor generates lightning icon(s) when a reflectivity value stored at cell(s) of the three-dimensional buffer above determined freezing level is greater than a first threshold amount. Also, the processor adds 1.6 km to the determined freezing level and generates hail icon(s) when a reflectivity value stored at cell(s) at the determined freezing level plus 1.6 km are greater than a second threshold amount. The display device displays the hail and lightning icons when an altitude value that corresponds to the cells associated with the generated lightning icons has been selected for display.

A method and system for controlling an engine in order to maintain a comfortable cabin temperature within a vehicle that is equipped with an engine, a battery and a heating / cooling apparatus including determining an acceptable range of cabin temperatures, monitoring cabin and outside air temperatures, controlling automatic starting of the vehicle engine when both temperatures are outside of the acceptable range and running the engine only as is minimally necessary to maintain the cabin temperature within the acceptable range.

The invention provides a power supply device for a vehicle, for driving a motor which is mounted on a vehicle and makes the vehicle travel. The power supply device for a vehicle includes: a battery unit having a plurality of secondary batteries; a battery temperature sensor for detecting temperature of a secondary battery included in the battery unit; a heat insulating mechanism for controlling the temperature of the secondary battery; an outside air temperature sensor for detecting the temperature of air on the outside of the vehicle; an intake port for taking the outside air to the battery unit in the vehicle; an intake valve for opening / closing the intake port; and a temperature controller for controlling opening / closing of the intake valve on the basis of the temperature difference between the outside air temperature detected by the outside air temperature sensor and the battery temperature detected by the battery temperature sensor.

A weather radar system for improving output of potential lightning and hail weather conditions. An exemplary system includes a processor that receives and stores the weather radar reflectivity values into a three-dimensional buffer, receives an outside air temperature value, and determines freezing level based on the received outside air temperature value. The processor generates lightning icon(s) when a reflectivity value stored at cell(s) of the three-dimensional buffer above determined freezing level is greater than a first threshold amount. Also, the processor adds 1.6 km to the determined freezing level and generates hail icon(s) when a reflectivity value stored at cell(s) at the determined freezing level plus 1.6 km are greater than a second threshold amount. The display device displays the hail and lightning icons when an altitude value that corresponds to the cells associated with the generated lightning icons has been selected for display.

Provided is a wind turbine generator system that can cool a nacelle interior by ventilation irrespective of the outside air temperature in various installation environments. In a wind turbine generator system in which equipment of drive and electricity generation mechanisms that are coupled to a rotor head provided with wind turbine blades is disposed inside a nacelle, and in which, by driving a ventilation fan provided in the nacelle, outside air introduced from an air inlet provided in a front face of the nacelle is exhausted outside the nacelle from an air outlet that communicates with a fan outlet, to perform ventilation cooling of the interior, a side air inlet is additionally provided in a side face of the nacelle at a position where a negative pressure is generated by air flowing outside the nacelle.

A vehicle air conditioner has a non-contact temperature sensor for detecting a surface temperature of a detection range of a passenger compartment. The detection range includes a first detection portion in which a surface temperature is changed to approximately correspond to an inside air temperature, a second detection portion in which a surface temperature is changed in accordance with an outside air temperature, and a third detection portion in which a surface temperature is changed in accordance with a sunlight amount entering the passenger compartment. In the vehicle air conditioner, a target temperature of air blown into the passenger compartment is calculated based on a set temperature and a surface temperature from the non-contact temperature sensor, while air-conditioning performance is improved.

A deicing system includes dual deice system components to provide a redundant deice system. Each redundant portion of the system generally includes a controller, an air data computer, an ice rate controller, and an ice rate probe. The controller communicating a heating cycle which defines a multiple of electric pulse trains to sequentially provides power to a multiple of heating elements in a designated blade set. Each electric pulse train is defined by an element on-time, a null time between the element on-time for this element and the next element, and an off-time between repetition of the heating cycle for the first heater element. The element on-time is a function of outside air temperature (OAT). The off-time is a function of liquid water content. The tail rotor heating cycle is a more straightforward version of the main rotor heating cycle as each of the tail rotor blade are activated simultaneously and there is only a single heating element on each tail rotor blade.

A high efficiency air conditioning system includes a pneumatically-controlled variable displacement compressor and a compressor clutch that is selectively cycled on and off to minimize series re-heating of conditioned air. Conditioned air is discharged after passing through an evaporator core, and a target value for the evaporator outlet air temperature is determined based on the desired air discharge temperature. The compressor clutch is cycled off when the evaporator outlet air temperature falls below the target value by at least a calibrated amount, and is thereafter cycled on again when the evaporator outlet air temperature rises above the target value. The target value is preferably biased to prevent compressor operation when the desired air discharge temperature exceeds outside air temperature by at least a calibrated amount and to prevent the relative humidity in the air-conditioned space from rising above a desired level.

A cooling apparatus for a vehicle includes a water cooling system that cools a cooled body by circulating cooling water; and a refrigeration cycle system that cools the cooling water to an outside air temperature or lower utilizing a gas liquid phase change of a refrigerant. The water cooling system includes a first flow passage that causes the cooling water cooled through a radiator radiating heat of the cooling water to outside air to flow through the cooled body; a second flow passage that causes the cooling water cooled to the outside air temperature or lower through an evaporator of the refrigeration cycle system 36 to flow through the cooled body provided at the first flow passage; and flow rate control units that control flow rates of the cooling water flowing in the first flow passage and the second flow passage.

Provided is a battery temperature control device configured to automatically heat a battery with a battery-driven heater so that the battery does not freeze at a minimum electric power consumption when the battery is out of use. The battery temperature control device predicts, based on a combination of a battery temperature and an outside air temperature, a predictive time that the battery temperature is likely to be less than a first set temperature, while the battery temperature is higher than or equal to the first set temperature at which there is no risk of freezing, and sets the predictive time as the next controller startup time, and determines whether or not the battery temperature has fallen to below the first set temperature with a control program wakeup when the predictive time has expired, and battery-drives the heater when the battery temperature fall has occurred, to heat the battery.

A controller for a vehicle makes it possible to restrain a temperature rise or a temperature fall in a passenger compartment and also to reduce fuel consumption in conducting control to temporarily stop an engine when the vehicle is at rest. The controller for a vehicle includes an in-passenger-compartment temperature sensor which detects the temperature of the air supplied to an evaporator by actuating a blower fan, an outside air temperature sensor, an evaporator temperature sensor which detects the temperature of the evaporator, and an engine stop duration determiner which determines an engine stop duration on the basis of the temperature detected by the evaporator temperature sensor immediately before an engine stops and the temperatures detected by the outside air temperature sensor and the in-passenger-compartment temperature sensor. An engine control unit continues the operation of the blower fan after a stop condition holds and the engine is stopped, and then restarts the engine and actuates a compressor when the engine stop duration has elapsed.

Water contained in cathode effluent from a cathode (1B) of the fuel cell power plant is condensed by a condenser (8) and recovered to a water tank (10). Water in the water tank (10) is supplied from a pump (17) to a humidifier (4) which humidifies hydrogen-rich gas supplied to an anode (1A) via a water passage (9B). When the power plant stops operating, a controller (30) first recovers water in the water passage (9B) to the water tank (10). Also, the freezing probability of the water passage (9B) is determined from the temperature detected by an outside air temperature sensor (31), and a wait time is set according to the freezing probability. By opening a drain valve (15) and draining residual water in the water passage (9B) after the wait time has elapsed, freezing of the water passage (9B) can be prevented with a minimum water drainage amount.

In an automotive vehicle having a heater for a heating operation for a passenger room of the vehicle with use of waste heat of an engine, a vapor compression refrigerating device comprises a refrigerating cycle for a cooling operation for the passenger room. The vapor compression refrigerating device further comprises a heating cycle (a heat pump cycle, or a hot gas cycle) for performing a heating operation to engine cooling water by using the high temperature and high pressure refrigerant from a compressor device, wherein a control means activates the heating cycle at a predetermined time before starting an engine when an outside air temperature is lower than a predetermined value. Accordingly, the engine has been already warmed up before a driver gets into the vehicle.

A method is provided for recommending proper tire pressure using a tire pressure recommendation system having a processor. The method comprises obtaining a cold placard tire pressure (PPl) for a cold placard air temperature (TPl) and obtaining a measured outside air temperature (TOutside). The cold placard tire pressure (PPl), the cold placard air temperature (TPl) and the measured outside air temperature (TOutide) are entered into the tire pressure recommendation system. The recommended tire pressure (PRe) is then calculated with the processor for the measured outside air temperature (TOutside), the recommended tire pressure (PRe) being based upon the cold placard tire pressure (PPl).

The invention discloses a method and a device for controlling an air conditioning system, and belongs to the field of air conditioning technology. The control method comprises the following steps of:obtaining an outdoor temperature Tao and an outdoor humidity RH; determining, according to the outdoor temperature Tao and the outdoor humidity RH, a start-stop state of the third throttle device of the cooling branch and a valve degree at the time of opening. The method for controlling the air conditioning system provided by the invention can determine, according to the outdoor temperature and the outdoor humidity condition, whether to open the operation of the cooling branch, so as to use the electric control member with high temperature to heat the refrigerant flowing back to a reservoir, thereby increasing the compressor return air temperature and delaying the attenuation of the heating capacity of the air conditioning system.

A method is provided for recommending proper tire pressure using a tire pressure recommendation system having a processor. The method comprises obtaining a cold placard tire pressure (PPl) for a cold placard air temperature (TPl) and obtaining a measured outside air temperature (TOutside). The cold placard tire pressure (PPl), the cold placard air temperature (TPl) and the measured outside air temperature (TOutside) are entered into the tire pressure recommendation system. The recommended tire pressure (PRe) is then calculated with the processor for the measured outside air temperature (TOutside), the recommended tire pressure (PRe) being based upon the cold placard tire pressure (PPl).

The present invention provides a method for controlling a charging voltage of a 12V auxiliary battery for a hybrid vehicle, which can (1) improve charging efficiency of an auxiliary battery by increasing the output voltage of a DC-DC converter during cold start when the outside air temperature is low, (2) improve the charging efficiency of the auxiliary battery by increasing or decreasing the output power of the DC-DC converter according to the state of charge of the auxiliary battery and by increasing the output voltage of the DC-DC converter when many electrical loads are turned on, and (3) allow the DC-DC converter to provide continuous power supply for charging the auxiliary battery by turning on a main switch disposed between a high voltage battery and the DC-DC converter based on a reverse power conversion operation of the DC-DC converter even in the case where the voltage of the auxiliary battery falls below 9V.

A power supply device for a vehicle, for driving a motor which is mounted on a vehicle and makes the vehicle travel. The power supply device for a vehicle includes: a battery unit having a plurality of secondary batteries; a battery temperature sensor for detecting the temperature of a secondary battery; a heat insulating mechanism for controlling the temperature of the secondary battery; an outside air temperature sensor for detecting the temperature of air outside of the vehicle; an air intake port for taking the outside air to the battery unit in the vehicle; an intake valve for opening / closing the intake port; and a temperature controller for controlling the opening / closing of the intake valve on the basis of the temperature difference between the outside air temperature detected by the outside air temperature sensor and the battery temperature detected by the battery temperature sensor.

Methods and apparatus are provided for vehicle windshield washing-wiping and wiper de-icing. Primary nozzles provide washing fluid to the windshield during normal operations and secondary nozzles bathe the wiper arms with washing fluid to de-ice the wipers during a de-icing mode. Washing fluid is drawn from a reservoir and delivered to the nozzles by a pump. When the outside air temperature T is greater than Tc, the critical temperature for ice formation, the wipers and washing-wiping proceed normally with washing fluid delivered to the primary nozzles for windshield washing. When T≦Tc and the wipers are not moving, a washer fluid supply line valve delivers washing fluid to the secondary nozzles to de-ice the wipers. The wiper motor, washing fluid pump and valve are operated by a controller based on inputs from wiper position and air temperature sensors, using predetermined information stored in on-board memory.

The present recreational vehicle water warming and circulating system uses the heated water in the water heater to heat the on-board water supply when the outside air temperature drops below the freezing point of water. The system includes a holding tank for containing a majority of the on-board water supply, and heated and cold loops that supply heated and cold water to various fixtures in the recreational vehicle. When temperature sensors sense a potentially freezing condition, a control circuit opens one or more solenoid valves to open the one or both loops to return undispensed heated or cold water to the holding tank. The control circuit closes the solenoid valves when the potentially freezing condition is no longer detected by the temperature sensors.

In a vehicle air conditioner, during a cooling mode of a refrigerant cycle, refrigerant discharged from a compressor passes through a condenser and flows into a heat exchanger used as an evaporator after being press-reduced in a first press-reducing unit. On the other hand, during a heating mode of the refrigerant cycle, refrigerant discharged from the compressor is directly introduced into the heat exchanger used as a radiator after being press-reduced in a second press-reducing unit, while bypassing the condenser and the first press-reducing unit. During the heating mode or during the cooling mode when outside air temperature is low, a double layer flow mode is set so that outside air flows toward a defroster opening through a first air passage and inside air flows toward a foot opening through a second air passage partitioned from the first air passage. Thus, it can prevent a windshield from being fogged due to vaporization of condensed water on the heater exchanger during the heating mode.

A comparison unit compares the outside air temperature in outside air temperature information acquired by an outside air temperature acquisition unit with an outside air temperature threshold that has been set by a threshold setting unit. A first information acquisition unit acquires ON operation information. A device control unit performs passive control when the outside air temperature is in a temperature range on a comfortable side with respect to the outside air temperature threshold. Where the outside air temperature is in a temperature range on an uncomfortable side with respect to the outside air temperature threshold, the device control unit performs passive control until an ON operation is performed and performs active control once the ON operation is performed. The passive control involves performing OFF control of the active device and natural environment usage control of a passive device. The active control involves performing ON control of the active device.

In order to provide a thermo-siphon chiller refrigerator for use in cold districts which performs natural refrigerant-circulation refrigerating cycle and also can perform a forced refrigerant-circulation refrigerating cycle when outside air temperature is high by using an indoor heat exchanger, an outdoor heat exchanger, and a compressor, and combining them with refrigerant piping, the thermo-siphon chiller refrigerator for use in cold districts of the invention has a compressor (10) additionally installed to a natural refrigerant-circulation refrigerating system comprising an outdoor heat exchanger (12), an indoor heat exchanger (11) located at a position lower than that of the outer heat exchanger (12), and an expansion valve (18). When the refrigerating capacity of the natural refrigerant circulation refrigerating system is not sufficient, the additional compressor (10) is operated to perform a forced refrigerant-circulation cycle i.e. a vapor compression refrigerating cycle.

A method for shutting down a fuel cell system includes: determining whether an outside air temperature is below a first predetermined reference temperature when a shutdown of a fuel cell system is detected; warming up the fuel cell stack by operating balance of plant components of the fuel cell system and a stack load using the power of the fuel cell stack, while the supply of hydrogen to the fuel cell stack is normally maintained, when the outside air temperature is below the first reference temperature; removing water in the fuel cell stack by passing air supplied by an air supply system through the stack load to supply heated air to a cathode of the fuel cell stack; and shutting down the fuel cell system by cutting off the supply of air after the removal of water. The method can eliminate or reduce cold start failure.

An air conditioner, comprising a low cost differential pressure regulating device capable of holding a difference between the high and low pressures of a compressor during the cooling operation under a low atmospheric temperature at a specified value or higher, the low cost differential pressure regulating device further comprising a first stage differential pressure regulating device for regulating the difference between high and low pressures so as to prevent the difference from lowering by lowering the speed of an outdoor fan when the difference between high and low pressures of the compressor during the cooling operation under a specified atmospheric temperature or below lowers to a specified value and a second stage differential pressure regulating device for regulating the difference between high and low pressures so as to prevent the difference from lowering by increasing the operating frequency of the compressor when the difference between high and low pressures cannot be held at the specified value or higher by the control of the difference between high and low pressures by the first stage differential pressure regulating device.

This invention provides an air-conditioner that continues a heating operation while performing a defrosting operation. A first bypass circuit 6 is provided for connecting the portion of a heat-pump-type refrigerating cycle between an indoor heat exchanger 3 and a decompressor 4 to the suction side of a compressor 1. The first bypass valve 6 is provided with a two-way valve 7 and a refrigerant heater 8. Further, a second bypass circuit 9 is provided for connecting the portion between a four-way valve 2 and the indoor heat exchanger 3 to the portion between the decompressor 4 and an outdoor heat exchanger 5. The second bypass circuit 9 is provided with a defrosting two-way valve 10. To defrost the outdoor heat exchanger 5, the decompressor 4 and the defrosting two-way valve 10 are closed according to outside air temperature and a fan 19 is rotated to perform a first defrosting operation. When the temperature detected by the temperature means of the outdoor heat exchanger is less than a predetermined value while the first defrosting operation is within a preset period of time, the two-way valve of the second bypass circuit is opened and an outdoor fan is stopped to perform a second defrosting operation.