How a Car Automatic HVAC System Works
Here's how the automatic heating, ventilation and air condition system work in a car.
The HVAC system in a vehicle is responsible for keeping occupants comfortable by controlling the temperature, humidity and fan speed. The system can be controlled based on external climate conditions. It provides heat in the winter, cool air in the summer and the removal of moisture to defrost the windows.
In this video, a dual-zone automatic climate control system is taken apart and detailed from an Infiniti G35. The air starts from the air inlet, where an actuator controls flaps to cycle recirculating air or fresh air. It is then sent through the cabin air filter and then pushed through the blower motor, into the air mixer.
The air mixer is responsible for taking air and making it warmer or cooler, depending on what the climate control computer directs its actuators to do. It is first passed through the evaporator core, which cools the air and removes any moisture before getting mixed between the heater core or bypass. Air is then directed out through the appropriate vents through flaps that move on a cam-slider system, controlled by the mode motors.
The control system comprises of many sensors, including the cabin temperature sensor, external temperature sensor, sunload sensor and evaporator core sensor, in addition to inputs from the HVAC driver controller interface. The brains of the controller is hosted inside the display unit, which forms a network with the motor actuators that control the flaps in the air mixer assembly. These motors are controlled through a CAN BUS network to reduce wiring and aid with diagnostics and each house a DC electric motor, a potentiometer and a gear reduction drivetrain.
The A/C loop comprises of the compressor, condenser, drier and evaporator core and expansion valve. The expansion valve controls the rate at which the refrigerant flows through the evaporator core inside the mixer box. Coolant lines running from the engine head also circulate through the heater core inside the HVAC box, and act like a mini radiator.
Link to Etsy shop where you can purchase speedkar99's brother's socks, t-shirts or hoodies:
https://www.etsy.com/ca/shop/Speedkar
Check out the speedkar99 Facebook page:
https://www.facebook.com/speedkar9/
Check out the speedkar99 Linkedin page:
https://www.linkedin.com/company/speedkar99/
Follow speedkar9 on Instagram for behind the scenes coverage:
https://www.instagram.com/speedkar9/
Subscribe for more videos just like this:
https://www.youtube.com/subscription_center?add_user=speedkar99
Видео How a Car Automatic HVAC System Works канала speedkar99
The HVAC system in a vehicle is responsible for keeping occupants comfortable by controlling the temperature, humidity and fan speed. The system can be controlled based on external climate conditions. It provides heat in the winter, cool air in the summer and the removal of moisture to defrost the windows.
In this video, a dual-zone automatic climate control system is taken apart and detailed from an Infiniti G35. The air starts from the air inlet, where an actuator controls flaps to cycle recirculating air or fresh air. It is then sent through the cabin air filter and then pushed through the blower motor, into the air mixer.
The air mixer is responsible for taking air and making it warmer or cooler, depending on what the climate control computer directs its actuators to do. It is first passed through the evaporator core, which cools the air and removes any moisture before getting mixed between the heater core or bypass. Air is then directed out through the appropriate vents through flaps that move on a cam-slider system, controlled by the mode motors.
The control system comprises of many sensors, including the cabin temperature sensor, external temperature sensor, sunload sensor and evaporator core sensor, in addition to inputs from the HVAC driver controller interface. The brains of the controller is hosted inside the display unit, which forms a network with the motor actuators that control the flaps in the air mixer assembly. These motors are controlled through a CAN BUS network to reduce wiring and aid with diagnostics and each house a DC electric motor, a potentiometer and a gear reduction drivetrain.
The A/C loop comprises of the compressor, condenser, drier and evaporator core and expansion valve. The expansion valve controls the rate at which the refrigerant flows through the evaporator core inside the mixer box. Coolant lines running from the engine head also circulate through the heater core inside the HVAC box, and act like a mini radiator.
Link to Etsy shop where you can purchase speedkar99's brother's socks, t-shirts or hoodies:
https://www.etsy.com/ca/shop/Speedkar
Check out the speedkar99 Facebook page:
https://www.facebook.com/speedkar9/
Check out the speedkar99 Linkedin page:
https://www.linkedin.com/company/speedkar99/
Follow speedkar9 on Instagram for behind the scenes coverage:
https://www.instagram.com/speedkar9/
Subscribe for more videos just like this:
https://www.youtube.com/subscription_center?add_user=speedkar99
Видео How a Car Automatic HVAC System Works канала speedkar99
Показать
Комментарии отсутствуют
Информация о видео
Другие видео канала
DENSO: How does an A/C system operateWhat's inside a Thermal Expansion Valve TXV - how it works hvac3 Common Signs Your TXV has Failed Causing Poor A/C System CoolingHow to replace Car Expansion Valve III Car ke AC ki cooling kaise badhaye in Hindi/Urdu (#ALTO VXR)A/C System Failure Diagnosis: Poor Cooling at IdleHow does a cars Air Conditioning system work?How an Automatic Transmission Works (FWD)How to Properly Recharge Your AC SystemExpansion valve / valve ko Gauge say test krain/ block pipe every problem about A/C/car maintenanceHow a Car Braking System Works: ABS, Traction & Stability Control ExplainedExpansion Valve Replacement - 2007-2012 Nissan Altima 2.5LHow TXV works - Thermostatic expansion valve working principle, HVAC Basics vrv heat pumpHow Hydraulic Power Steering WorksHonda Accord AC Evaporator And Expansion Valve Replacement (2003 - 2007)How to Replace an Expansion Valve in Your CarHow an A/C Compressor WorksPano malalamaN kung baraDo ExpaNsioN valve,,AC fixed. Bad dryer. Not compressor. No leaks. Clogged high pressure lines from dryer debris.How a Car's HVAC System Works