RU52114U1 - COMBINED ENGINE - Google Patents

Abstract

The proposal relates to mechanical engineering, namely to engine building and can be used to increase the power and reliability of reciprocating internal combustion engines. The proposed combined engine comprises: a reciprocating internal combustion engine 1 with exhaust 2 and inlet 3 manifolds, the first being connected to a gas turbine 4, driving a compressor 5, compressed air from which enters the intake manifold 3 through a temperature stabilizer 6, containing phase-accumulating heat-accumulating substance transition

Description

The proposal relates to mechanical engineering, namely to engine building and can be used to increase the power and reliability of reciprocating internal combustion engines.

Combined supercharged internal combustion engines created for these purposes are known.

A combined internal combustion engine is known, comprising: a piston part — a diesel or gasoline engine, a compressor for pre-compressing the air supplied to the cylinders, and a turbine for continued expansion of the exhaust gases driving the compressor (Belov P.M., Buryachko V.R. , Akatov E.I. Engines of army vehicles.Part 1. M .: Military Publishing House, 1971. - 512 p.).

The disadvantages of this design are:

1. The high temperature of the charge air supplied to the cylinders of the reciprocating internal combustion engine during its operation at high loads, which leads to a decrease in the density of the fresh charge and, accordingly, to a decrease in the filling ratio, resulting in a decrease in the power of the piston engine.

2. Relatively low charge air temperature,

fed into the cylinders of a reciprocating internal combustion engine, when it is running at low loads, which leads to disruptions in the flow of the working process, up to skipping some cycles when working on gas condensate fuels. In addition, the relatively low temperature of the fresh charge leads to the grinding of the piston rings and the nozzle nozzle openings and, as a result, to a decrease in the nozzle channel cross section, and hence to the cyclic fuel supply, which also causes a decrease in engine power.

A combined internal combustion engine is also known, comprising: a piston part — a diesel or gasoline engine, a compressor for pre-compressing the air supplied to the cylinders, a charge air cooler providing cooling before entering the cylinders when the piston engine is operating under high loads, and turbines for continued expansion of exhaust gases that drive the compressor (Dehovich D.A., Ivanov G.I., Kruglov M.G. et al. Air supply units for combined engines. - M.: Engineering, 1973.- 295 p.).

The disadvantages of this design are:

1. Significant weight and size characteristics of charge air coolers and the need for energy costs for moving the coolant.

2. An additional decrease in the temperature of the charge air during operation of the piston internal combustion engine at low loads, which exacerbates the disadvantage 2 of the analogue described above.

3. The fundamental impossibility of ensuring an increase in the temperature of the charge air during operation of the piston internal combustion engine at low loads.

This engine design is the closest to the proposed technical essence and adopted as a prototype.

The objective of the proposal is to provide cooling of the charge air during the operation of the piston ICE under heavy load conditions, heating of the charge air during the operation of the piston ICE at low load conditions and, as a consequence, increase the filling of the piston ICE cylinders with fresh charge at high load conditions and to exclude the resinification of parts at low load modes loads.

The solution to this problem is achieved by the fact that in the intake system of a diesel engine or gasoline engine, after the compressor, a charge air temperature stabilizer is installed, which contains the heat-accumulating substance of the phase transition and

provides almost constant air temperature regardless of the load on the piston engine.

An analysis of the proposed solution and the known ones allows us to conclude that it meets the patentability conditions of the utility model.

The proposal is illustrated in the figure (figure 1), which shows the basic structure of the combined engine.

The proposed combined engine comprises: a reciprocating internal combustion engine 1 with exhaust 2 and intake 3 manifolds, the first being connected to a gas turbine 4 driving a compressor 5, compressed air from which enters the intake manifold 3 through a temperature stabilizer 6 containing a phase heat-accumulating substance transition.

The proposed combined engine operates as follows.

The exhaust gases of a reciprocating internal combustion engine 1 through an exhaust manifold 2 enter a gas turbine 4, which drives a compressor 5, from which compressed air enters a temperature stabilizer 6, where the high temperature of the air compressed in the compressor under high load conditions is reduced by heating heat storage substance phase transition, rather low

the temperature of the air compressed in the compressor at low load conditions rises due to heating from a previously heat-accumulating substance.

Compared with the prototype in the proposed combined engine, the cooling of the charge air at high load conditions (providing an increase in the filling coefficient and, accordingly, power) does not require energy to cool it, but at low load conditions it excludes cooling of the charge air, and vice versa, it provides heating , which eliminates the risk of grinding the details of the piston internal combustion engine, which provides increased power and reliability.

Claims (1)

A combined engine containing a reciprocating internal combustion engine, a gas turbine and a compressor for injecting air into the cylinders of a reciprocating internal combustion engine, characterized in that the fresh charge compressed in the compressor enters the cylinders through their temperature stabilizer, the latter containing a phase-transfer heat storage substance.