After released a series of ambitious environmental targets, Volkswagen group recently announced it will use carbon dioxide as refrigerant air conditioning system, the Volkswagen group is adopted for the realization of sustainable development and environmental protection and a major move. Volkswagen group international motor show in Geneva stressed by 2018 to become the world\'s most environmental sustainability of automobile manufacturing enterprise\'s strategic goals. To achieve this goal, the group will be the total investment of more than two-thirds of technology, drive systems for the development of high efficiency and energy saving, new products and production technology of environmental protection and sustainable. Now, Volkswagen group, announced a foray into carbon dioxide and technical areas, and gradually extended to such technologies to the whole vehicle, this is to protect the climate and environment and take a systemic move again. The move will further advance group of climate protection. Carbon dioxide as a kind of natural gas, with its as raw material to the refrigerant is called R744, the greenhouse effect is far less than traditional refrigerants, very suitable for use in a specially designed car air conditioning system. Co2 refrigerant Global Warming QianNengZhi GWP (Global Warming Potential) was only about 1, 150 GWP than European Union rules limit low of 99.3%. (article source: automotive night)