Double-crankshaft engine

Abstract

The invention discloses a double-crankshaft engine and belongs to the technical field of engines. The double-crankshaft engine comprises a piston and two crankshafts forming a double-crankshaft mechanism, and further comprises a cylinder block. The cylinder block comprises an air cylinder block part and a crankshaft supporting part. A piston guide rod is arranged at the lower end of the piston, the cylinder block is internally provided with a piston rod guide groove, the lower end of the piston is open and is provided with a piston end cover, and the piston end cover and the piston guide rod are detachably and fixedly connected; and the piston is a skirt-free piston with the piston guide end and the piston seal end separated, the piston seal end is a piston head, and the piston guide end is provided with the piston guide rod and the piston rod guide groove. The double-crankshaft engine is good in manufacturability, the piston is designed through isostress, strength is increased, abrasion-resisting design is adopted in a connecting part of a connecting rod and the piston, and the abrasion resisting performance and the reliability of the whole engine are improved.

Description

technical field [0001] The invention relates to a double crankshaft engine, which belongs to the technical field of engines. Background technique [0002] At present, whether it is a gasoline engine or a diesel engine, the actual thermal efficiency is much lower than the theoretical thermal efficiency. One of the main reasons for this phenomenon is that parts such as cylinder liners and pistons that are in direct contact with high-temperature gas are made of metal materials with poor thermal insulation effect. , The continuous and reliable work of metal materials needs to rely on the cooling system to continuously cool the heat energy absorbed from the closed combustion chamber. Ceramic material is a material with good heat insulation effect. If the parts of cylinder liner, piston and other parts in direct contact with high-temperature gas are made of ceramic material, the actual thermal efficiency can be improved, but the low reliability caused by the brittleness of ceramic...

AI Technical Summary

Problems solved by technology

Ceramic material is a material with good heat insulation effect. If the parts of the cylinder liner, piston and other parts in direct contact with high-temperature gas are made of ceramic material, the actual thermal efficiency can be improved, but the low reliability caused by the brittleness of ceramic material becomes Technical obstacles in its application to engines

[0003] Although the patent (patent application number: CN 201410653964.6) that the inventor has applied for has solved the above-mentioned problems to a certain extent, its manufacturing process is more complicated, and the friction surface wears relatively more seriously, and some details have yet to be resolved and Complete

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