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向气缸中补充空气是改善内燃机工作过程,提高节油性能的途径之一。但是,实现这个方案要先解决一系列具体问题。为此,苏联喀山农学院和国家汽车研究所的专家们进行了此项研究。对-15单缸机和M-4021-10四缸机进行了局部改装,在其气缸下部与直径面和轴面成10°～12°角钻了几个孔(图1),以便空气在气缸中均匀分配,同时产生涡流。当活塞移到下止点时,空气流过簧片止回阀进入气缸。为了防止缸内废气流到补充供给空气系统,补充空气压力比废气压力高0.03～0.05MPa(0.3～0.51kgf/cm~2)。
Replenishing air into the cylinder is one of the ways to improve the working process of the internal combustion engine and improve the fuel economy. However, a number of specific issues need to be solved before realizing this plan. To this end, the Soviet Union Kazan Agricultural College and the National Automobile Institute of experts conducted the study. The L-15 single-cylinder machine and the M-4021-10 four-cylinder machine were partially modified to drill several holes (Figure 1) at the lower part of the cylinder at an angle of 10 ° to 12 ° to the diameter and the shaft surface Cylinder evenly distributed, while generating vortex. As the piston moves to bottom dead center, air flows through the reed check valve into the cylinder. In order to prevent the cylinder exhaust gas flow to supplement the supply air system, the replacement air pressure is 0.03 ~ 0.05MPa (0.3 ~ 0.51kgf / cm ~ 2) higher than the exhaust pressure.