New petrol engines from Mazda will operate without spark plugs

The fuel-air mixture in the new units Mazda will self-ignite and their efficiency will grow up to 50%.
According to the head of theMazda European Centre for Research and Development Kenichiro Saruwatari, the company's engineers continuing their work on improving the efficiency of gasoline engines, and by 2020 they plan to improve it up to 50%.The efficiency of the internal combustion engine - a general indicator, which informs how efficiently energy is used when fuel combusts. The more efficiently this happens, more economical, more environmentally friendly and more powerfulengine gets.
Even today, modern engines Mazda with their high compression ratios (14: 1) in comparison with the aggregates of competitors are among the leaders in terms of efficiency. However, this Japanese company do not plan to stop there, setting a new goal to increase the rate from the current 40% to 60%. They seek to achieve this result by increasing the maximum compression ratio to 18:1, which could only be foundbeforeonly in diesel engines. Petrol is not plannedignite bya spark plug, they will use self-ignition due to the high temperature in the combustion chamber, which occurs due to a high pressure at this compression ratio. To avoid bad engine detonation in combustion processes, engineers are developing a very precise fuel delivery system. The project SkyActivis also trying to reduce heat loss through the exhaust system, because of which, about 30% of the energy are lost.
The main objective of the project is to reduce harmful emissions into the atmosphere from exhaust gases to the minimum and to improve the efficiency of gasoline engines to the level of their diesel counterparts.
SkyActiv engines of the new generation in the case of usage in hybrid power plants will reach a level of 50 g / km for CO2 emissions, which is a very good result.