对可变压缩比活塞发动机工作过程的研究工作是在拖拉机用8ЧНВ15/16风冷发动机的单缸试验机上进行的。选择这种发动机不是偶然的。首先,这种发动机气缸活塞组的热应力大大超过相同功率的水冷发动机。因此,这种发动机比任何其它发动机更需要加强冷却。其次,这种发动机是不久以前才设计出来的,所以其强度储备(安全系数)还有余裕,它还能进一步强化。 Research work on the variable compression ratio piston engine working process is carried out on a single-cylinder testing machine for tractors with an air-cooled 8ЧНВ 15/16 air-cooled engine. It is not accidental to choose this engine. First of all, the thermal stress of the cylinder block of this kind of engine exceeds that of water-cooled engines of the same power. Therefore, this engine needs more intensive cooling than any other engine. Second, the engine was not designed until a long time ago, so there was margin for its strength reserve (safety factor) which could be further enhanced.