Progress in the construction of passenger cars as a result of CO2 emission limitation

Global warming is a scientifically proven fact. Much of the temperature rise on the surface of the globe has been caused by human activity. That is why several years' efforts are aimed at reducing of CO2 emissions, related to the human activities. Major sources of CO2 emissions include electricity production from fossil fuels, transport sector and intensive agriculture. Cutting down forests also contributes climate changes. In the field of transport, decisions are made at the level of the European Commission, and also by the wider audiences of introducing limits for CO2 emissions entire fleet of new passenger cars for year 2015, 2021 and later. The actions taken by car manufacturers are diverse. Cheaper and simpler solutions are focused on the concept of micro-hybrid based on a system of 48 V. More advanced solutions are a wide range of hybrid vehicles, including PHEV, and pure electric vehicles. The use of lighter materials, improved aerodynamics and rolling resistance, more efficient internal combustion engines and gearboxes also have an impact on energy demand and, consequently, CO2 emissions. An important problem to solve in many countries is the dissemination of renewable energy sources rather than fossil fuels. This article presents an outline of the issues related to eco-friendly solutions, including requirements for batteries intended for this type of vehicles. It also presents an overview of European standards in this area and progress in advanced energy sources.