All about

Air Conditioning & Engine Cooling

All about

Air Conditioning & Engine Cooling

General information

DENSO’s experience with thermal components stretches back to the 1950s when car heaters were among the first products sold by DENSO as an independent company. Air conditioning (AC) and cooling systems were soon added to its product line-up. This kick-started a journey of innovation that continues to this day, with DENSO as an established leader in heating, ventilation and air conditioning (HVAC) systems. DENSO thermal parts are recognised as being at the forefront of the market: in the automotive sector, where they are fitted as OE car parts by several major brands, but also in domestic and industrial heaters and cooling systems.

Today, DENSO’s range of AC and thermal parts for temperature control is comprehensive: from principal parts such as condensers, evaporators and compressors, to oils, actuators, expansion valves, switches and other components, to engine cooling fans and intercoolers. DENSO parts are trusted by vehicle manufacturers and used in an OE capacity – which means aftermarket professionals can rely on them to perform consistently at a high level and match OE quality in terms of output and longevity. Not only do we supply workshops and distributors with a comprehensive, smart range of A/C and thermal components, but we also support the aftermarket with advice and training to help ensure a first-time fit every time.

Installation and fault finding

The wide variety of air conditioning and thermal parts available means the best practices for repairing and replacing them depend heavily on the specific vehicle and part. If in doubt, motorists should be encouraged to always book their car in for a check by a professional, while technicians can take advantage of DENSO’s dedicated e-learning courses for AC systems. (link to https://www.denso-technic.com/). For more information on our AC and engine cooling products, visit our dedicated downloads section. (link to https://www.denso-am.eu/downlo...)

Air Conditioning FAQs

How does a car air conditioning system work?
Air conditioning operation relies on taking heat out of the passenger compartment by absorbing the heat into a refrigerant that transports the heat away from the passenger compartment so that it can be released to the outside air.
What components are in a car's air conditioning system?
The air conditioning system comprises a number of parts. There is a compressor for transporting refrigerant gas to the condenser. The condenser is a heat exchanger for cooling and condensing the refrigerant gas into a liquid. It also has a receiver-drier or accumulator - which contains dessicant, to absorb moisture and a filter that removes debris from the refrigerant. Next, we have an expansion valve or orifice tube that creates low pressure, low temparature refrigerant mist to the evaporator. The evaporator is another heat exchanger that absorbs heat from the passenger compartment, cooling it down by evaporating the refrigerant mist into low temparature gaseous refrigerant.
How does a car engine cooling system work?
A car engine generates excess heat when running and must therefore be cooled continuously to maintain the right engine temperature to avoid overheating and causing serious damage to the engine. Generally, this is achieved by circulating coolant through special cooling passages in the engine block and cylinder head. Todays coolant is a fluid that consists of ethylene glycol, water, and performance-boosting additives. When the engine is running, the waterpump creates a flow of coolant through the engine. The coolant absorbs the excess heat and release this heat to the outside air by using the radiator, located in front of the vehicle. The radiator is cooled by the air flow when driving or by using the cooing fan(s) when the car is stationaairy.
What is compressor oil?
Compressor oil is a vital component in any air conditioner system. The oil has three primary purposes: lubrication, heat removal, and sealing.

Catalogues and marketing materials

To find out more about Air Conditioning & Engine Cooling browse the Downloads Area section. Click here.