Thank you for visiting the DENSO FAQ page. Here you will find our most commonly asked questions and answers to them. If your question isn’t on this list please submit your question using the online form set out below.


Q. Where can I get more information about buying your products?

A. DENSO operates extensively within the aftermarket sector please click (http://www.denso-am.eu/) to access our aftermarket website.


Q. Where can I get technical support about one of the DENSO products?

A. Please contact your nearest sales office in the country in which you are located. Please click on the country locator or click here.


Q. Where can I get more information about the DENSO robots?

A. Our robotics team operate their own website which gives much more information about these products. Please click here (Robotics Website) for more information and to access our robotics website.


Q. Where can I get more information about a career in DENSO?

A. Please look at the “careers section of this website” or alternatively contact the nearest DENSO company for more information about specific vacancies. Alternatively contact the European HR team at info@denso.nl.


Q. How big is DENSO on the world HVAC stage?

A. DENSO Corporation is the world’s leading supplier of compressors, and heating, ventilation and air conditioning (HVAC) systems.


Q.Is there a simple way to understand the car’s air conditioning system?

A. The main purpose of an air conditioning system is to maintain the air in the passenger compartment at a comfortable environmental level by cooling or heating the air blown into the passenger compartment. In addition it will reduce humidity, dust and smells in the passenger compartment.  To perform these operations, the car’s air conditioning system generally consists of a heater, evaporator and a ventilation system including a blower, air ducts, and air purifier. The main components of the refrigeration cycle are:

  • Compressor driven by the car engine
  • Condenser
  • Receiver / Drier
  • Expansion Valve
  • Evaporator


Q. What is special about common-rail diesel technology?

A. Originally designed for trucks and heavy good vehicles, diesel common rail systems consist of elements of high pressure pumps, ECUs and sensors to deliver maximum engine performance and reliability with a minimum level of noise and emissions. Common rail technology features a high-pressure fuel rail feeding individual injectors – as opposed to conventional pump systems feeding mechanical injectors. The world’s first diesel common rail system was pioneered by DENSO.


Q. Does hybrid engine technology required different engine cooling?

A. Internal combustion engines and electrical motors work at different temperature levels to achieve their best performance. Whilst an internal combustion engine usually works at 90oC coolant temperature, the colder an electrical motor is, the better it works. For this reason hybrids need a separated cooling circuit. New battery concepts and electronics add more specific issues to the design of electrical part of cooling system. From the layout point of view, a new radiator has to be added to the cooling module to reject the electrical motor load, resulting in a more complex front end cooling module.