In the day of growingly lacking energy, the energy consumption condition of an automobile internal-combustion engine with high energy consumption is continuously improved, for example, a multi-valve technology is successfully developed, but due to the valves, the technology stays at the stage of addressing the symptoms rather than the causes. The energy conservation and emission reduction effects are very limited. It also has a great improvement space for people to explore and develop. According to the conditions, a new internal-combustion engine scheme with new breakthrough on the aspects of energy conservation and emission reduction is conceived in the invention. The invention has great progress on complexity of the mechanism increased to reduce air intake and exhaust resistance and development of the internal-combustion engine by increasing the number of valves such as four valves and even six valves. The scheme abandons the air intake and exhaust valve scheme, and air intake and exhaust do not need to be concealed. An all-open structure is adopted. The air intake and exhaust resistance is nearly zero. The negative work loss of air intake and exhaust is greatly reduced. The invention has new improvement on the basis of greatly saving the energy by 40 percent in the patent certificate with patent number ZL200610112003.X, oil is saved by about 50 percent by supposition, and the dream that a liter of oil serves as two liters is realized.