Position sensor of free piston engine

Abstract

The invention discloses a position sensor of a free piston engine. The position sensor of the free piston engine comprises the free piston engine composed of a hydraulic pump body assembly, a first cylinder and a second cylinder, wherein the first cylinder is connected with one side of the hydraulic pump body assembly, the second cylinder is connected with the other side of the hydraulic pump body assembly, an inner piston assembly is arranged in the first cylinder, an outer piston assembly is arranged in the second cylinder, and an internal position sensor body and a second internal position sensor body are arranged on the hydraulic pump body assembly. The position sensor of the free piston engine has the advantages that accurate and reliable position and speed information of the piston assemblies are provided by the position sensor bodies, the information can be obtained in the whole travel distance of each piston, interference of the motion of the piston assemblies is avoided, and the position sensor body of the inner piston assembly can be used for preventing the piston assemblies from rotating when the piston assemblies make reciprocating motion in the cylinders.

Description

technical field [0001] The invention relates to a free-piston engine, in particular to a position sensor for a free-piston engine. Background technique [0002] Generally speaking, an engine operates by the fixed mechanical motion of pistons. For example, a conventional automotive internal combustion engine consists of a crankshaft and several connecting rod components, which determine the movement of each piston in its own cylinder. This type of engine is exactly what we want, because at a given moment, the position of each piston in the working cycle is determined, and it simplifies the timing and operation of the engine. Although the efficiency of traditional types of internal combustion engines has improved greatly in recent years, due to the nature of the engine, its efficiency is still limited. Especially because the mechanical movement of the piston is fixed, it determines that the compression ratio is fixed, which leads to the limitation of its specific power. In ...

AI Technical Summary

Problems solved by technology

This patent uses a displacement sensor to determine the position of the piston assembly to increase the volume ratio of the system. Compared with this application, there are obvious differences in the device used, the installed structure and the technical effect to be achieved.

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