Abstract
The paper presents a new concept of applying a rotary vane engine working as the hybrid system including both a combustion engine and a pneumatic motor, which were working simultaneously. In the beginning, review on both unconventional piston engine designs and similar like solutions on rotary vane engines were conducted. Next, description of the conceptual engine was presented. The concept was realized in practice. The prototype engine was built and it was preliminary investigated focusing on problems with cold start and misfiring events which occurred. The engine was tested on LPG and gasoline, however, its main target is to feed it with natural gas. This approach is justified as far as the engine finally might work in natural gas reduction stations and would provide electricity of 1kW power for station’s own demands.
Highlights
The internal combustion engine as known as a machine which achieves its highest possible thermal efficiency among all the machinery converting chemical energy from a fuel into mechanical useful work resulted from the combustion process taken place inside an engine combustion chamber
As discussed by Lenz [1] future for means of transport drives belongs to internal combustion engines fueled with liquid fuels
The engine design has been evolving over centuries and currently the most popular is the reciprocating engine with piston joined to the crankshaft with aid of a connecting rod
Summary
The internal combustion engine as known as a machine which achieves its highest possible thermal efficiency among all the machinery converting chemical energy from a fuel into mechanical useful work resulted from the combustion process taken place inside an engine combustion chamber. The advantage of the presented way of guiding the baffles is the slight pressure affecting the cylinder's surface, which should significantly improve the service life of the baffles and at the same time ensure the tightness between the chambers Another special feature of the engine is the use of an asymmetrical cylindrical body, which results in a smaller compression chamber and a larger expansion chamber. The rotor with baffles rotates inside the body (cylinder) constructed in such a way as to isolate from each other the following spaces: the part in which compression takes place, the part in which the ignition occurs and the part in which the gases are subject to expansion In this mode of operation, it is the engine that works as an internal combustion engine and partially resembles the Wankel engine with a rotating piston, this piston is not located eccentrically. Expansion of the exhaust gases takes place in the same part of the engine as the air expansion is done
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