RU2191905C2 - Free piston engine - Google Patents

Abstract

FIELD: power engineering. SUBSTANCE: invention relates to free piston internal combustion engines. Proposed free piston internal combustion engine has piston fitted in cylinder and mechanically coupled with energy accumulator, shock absorber, system of valves, engine shock absorber and connecting rod between engine shock absorber and energy consumer. EFFECT: enlarged sphere of application of free piston engines. 2 dwg

Description

 The invention relates to mechanical engineering, in particular to internal combustion engines.

 Known free piston internal combustion engine (prototype), in which the ignition energy of the fuel mixture through the translational motion of its constituent masses is converted into linear movement of the vehicle [1].

 In modern technology, the most common are power plants that give the consumer energy through rotational motion [2].

 The objective of the invention is to combine the inertial method of converting the energy of the translational motion of the masses with the rotational motion, meeting the needs of the energy consumer in a wide power range, expanding the scope of the free piston engine to the same as the internal combustion engine with the classic layout.

 This is achieved by the fact that the free-piston internal combustion engine containing a piston located in the cylinder kinematically connected with the energy accumulator, a shock absorber, a valve system, an engine shock absorber is additionally equipped with a connecting rod located between the engine shock absorber and the energy consumer.

 The invention is illustrated by drawings: figure 1 - diagram of the engine, fig. 2 is a general view of a multi-cylinder power plant. The drawings indicate: cylinder 1, exhaust valve 2 of the high pressure system, shock absorber 3, oil valve 4, power accumulator 5, piston 6, exhaust valve 7, air valve 8, fuel valve 9, oil valve 10, valve 11 of the high pressure system, units engine 12, main shock absorber 13, connecting rod 14, energy consumer 15.

 For the operation of the engine, it is assumed that all workflow support systems of a conventional internal combustion engine and an additional non-expendable high-pressure system are common for all engine units 12 operating in push-pull mode and independently of each other.

 The proposed device operates as follows.

 After purging the cylinder 1 with air through valve 8 with the valve 7 open and valve 9 closed, the cavity II of cylinder 1 is filled with fuel mixture, valves 7, 8 are closed, valve 9 is open.

 From the non-expendable high-pressure system, gases through the metering nozzle and valve 11 enter cavity I, which provides compression of the fuel mixture in cavity II by a piston 6 kinematically connected to the energy accumulator 5. Valves 7, 8, 9 are closed.

 Under the influence of compression from a high-pressure system, different for any liquid or gaseous fuel, it ignites.

 Due to the pressure on the piston 6, the force is transmitted to the energy accumulator 5, which through the valve 2 returns the gases to the high pressure system.

 Valve 11 is closed.

 Valves 4, 10 provide lubrication of the surfaces between the rings of the piston 6 and the energy accumulator 5 and the cooling of these parts.

 The energy accumulator 5 receives and gives energy to the shock absorber 3 and further to the cylinder 1, the coolant jacket, the head, etc.

 The engine assembly 12 moves along the chassis reciprocatingly.

 The thrust vector of each engine assembly 12 is summed up by the main shock absorber 13 and transmitted to the consumer 15 through the connecting rod 14.

 The transmission and transformation of energy proceeds along the chain described above due to the involvement of the masses of the parts of their components in the translational movement with a gradual decrease in acceleration and an increase in the duration of the force.

 The converted impulse of force from the piston 6 to the force from the main shock absorber 13 allows you to transfer energy from translational motion to rotational using a connecting rod 14 and its use by the consumer without transmission in any modes due to the adjustable supply of fuel quantity and the number of engine units 12 included in the operation.

 Further, the above processes are repeated.

 The required power is gained by the number of installed engine units 12.

 The disadvantage in the proposed mechanism of the engine is its slightly increasing lengths.

 This is eliminated by the possibility of various engineering solutions for the location of all workflow support services with their drive both from translational movements and from rotation.

 The advantages include new engine features: simplicity, modular method of repair and maintenance, multi-fuel, the ability to work with detonation combustion of the fuel mixture. In the manufacture of a free piston engine, well-known technologies and materials are used. The absence of metal-consuming, precise and complex parts significantly reduces labor costs in manufacturing compared to an engine with a classic construction scheme while maintaining and expanding the scope of use.

Sources of information
1. Patent RU 2107831, cl. F 02 B 71/00, F 03 G 3/00, 1998

 2. Under the general editorship of A.S. Orlin, M.G. Kruglov. Internal combustion engines. Piston and combined engine systems. Third edition. M., 1985.

Claims (1)

 A free piston internal combustion engine comprising a piston located in the cylinder kinematically connected with an energy accumulator, a shock absorber, a valve system, an engine shock absorber, characterized in that it is additionally equipped with a connecting rod located between the engine shock absorber and the energy consumer.

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