RU60996U1 - PNEUMATIC PISTON ENGINE FOR DISPOSAL OF HEAT OF EXHAUST GAS ICE - Google Patents

Abstract

The proposal relates to mechanical engineering, namely to engine building, and can be used to obtain additional power without increasing fuel consumption. The proposed pneumatic piston engine for utilizing the heat of the exhaust gas of the internal combustion engine contains a crankcase 1 and a cylinder 2, the outer part of which is surrounded by a cavity 3 with heat-accumulating material and a jacket 4 for the passage of exhaust gases of the internal combustion engine. A piston 5 is located in the cylinder 2, connected to the crosshead crank mechanism 6. The inlet valve 7 and the discharge valve 8 are located in the lower part of the cylinder 2, and the exhaust valve 9 is located in the cylinder cover. The discharge valve 8 is connected by a pipe 10 to a water-cooled receiver 11 . The receiver 11 communicates with a pneumatic nozzle 12 located in the cylinder cover 2 and equipped with a solenoid valve 13, using a pipe 14. 1 C. p. f-ly, 1 ill.

Description

The proposal relates to mechanical engineering, namely to engine building, and can be used to obtain additional power without increasing fuel consumption in a power plant, including an internal combustion engine and a pneumatic piston engine for utilizing the heat of exhaust gas from an internal combustion engine.

Known engines for utilizing the heat of exhaust gases of internal combustion engines.

Known engine with external heat supply for utilizing the heat of exhaust gas of internal combustion engines (Kukis BC, Chernykh K.A., Strelchik D.V. et al. Engine with external heat supply for utilizing heat of exhaust gases of internal combustion engine: Utility Model Certificate. RU 17946 U1 7 F 02 G 5/02. 05/10/2011 Bull. No. 13). An engine with an external supply of heat for utilizing the heat of the exhaust gas of the internal combustion engine has a piston engine, including a crankcase with a cylinder heated by the exhaust gas of the internal combustion engine, in which the piston connected to the crank mechanism is moved. In the cylinder head is a nozzle for injecting water coming from the tank. On one side of the crankcase there is an inlet pipe with a check valve, with

the other is a bypass channel for transferring compressed air in the crankcase into the over-piston space. At the bottom of the cylinder there is an exhaust pipe for the release of the spent working fluid.

The disadvantages of this engine for the utilization of the heat of the exhaust gases of the internal combustion engine are:

- high water consumption necessary for the production of work as a result of its evaporation, which requires the organization of a closed loop of water circulation;

- significant energy costs for the organization of water circulation and the creation of high pressure for its effective atomization in the above-piston space;

- serious problems associated with the need to create a water purification system in a closed loop of its circulation.

Also known is a pneumatic piston engine for utilizing the heat of exhaust gases of an internal combustion engine ((Kukis BC, Tkachenko A.V. et al. Pneumatic piston engine for utilizing the heat of exhaust gases of an internal combustion engine: Utility Model Patent. RU 51677 U1 7 F 02 G 5/02. 02/27/06 Bull. No. 6), which contains a crankcase and a cylinder, heated by the exhaust gases of the internal combustion engine passing through the jacket surrounding the cylinder. In the cylinder there is a piston connected to the crosshead crank mechanism.

the inlet valve and the discharge valve are located in the cylinder, and the exhaust valve is located in the cylinder cover. The discharge valve is connected by a pipeline to the receiver, which, in turn, 10 communicates with a pneumatic nozzle located in the cylinder cover and equipped with an electromagnetic valve.

The disadvantage of this pneumatic recycling engine are:

- significant temperature fluctuations in the piston volume of the cylinder due to a significant difference in the temperature of the exhaust gases of the internal combustion engine in different modes of its operation;

- uneven heating of the walls of the cylinder, since hot gas blows it on only one side. This leads to thermal stresses in the walls of the cylinder and limits the amount of heat that is transferred from the gases to the inner cylinder space.

This design of the air motor is the closest to the proposed technical essence and adopted as a prototype.

The objective of the proposal is to increase the efficiency of using the heat of the exhaust gases of the internal combustion engine during its utilization and to reduce thermal stresses in the cylinder walls.

The solution to this problem is achieved by the fact that in a pneumatic piston engine for utilizing the heat of the ICE exhaust gases, the outer walls of the cylinder are surrounded by a cavity filled with heat-retaining substance and a cavity for the passage of ICE exhaust gases, from which heat is initially transferred to the heat-accumulating substance with a phase transition, which plays the role of a stabilizer temperature, and then into the inner cylinder space.

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 principal device of a pneumatic piston engine for utilizing the heat of exhaust gases of the internal combustion engine.

The pneumatic piston engine for utilizing the heat of the exhaust gas of the internal combustion engine contains a crankcase 1 and a cylinder 2, the outer part of which is surrounded by a cavity 3 with heat-accumulating material and a jacket 4 for the passage of exhaust gases of the internal combustion engine. A piston 5 is located in the cylinder 2, which is connected to the crosshead crank mechanism 6. The inlet valve 7 and the discharge valve 8 are located in the lower part of the cylinder 2, and the exhaust valve 9 is located in the cylinder cover. The discharge valve 8 is connected by a pipe 10 to a receiver 11 cooled by water . Receiver 11

communicates with a pneumatic nozzle 12 located in the cylinder cover 2 and equipped with a solenoid valve 13, using a pipe 14.

The proposed pneumatic piston engine for utilizing the heat of exhaust gases of the internal combustion engine operates as follows.

When the piston 5 is moved upward as a result of the rarefaction of the cylinder 2 in the sub-piston space, air enters from the atmosphere through the inlet valve 7. After the piston 5 reaches its extreme upper position, the piston 5 moves downward, which is accompanied by compression of the air below it. When the piston 4 approaches its extreme lower position, the discharge valve 8 opens and the compressed air enters the receiver 11 through the discharge pipe 10, where it is cooled by water. Compressed and cooled air through the air duct 14 is supplied to the pneumatic nozzle 12. At the moment when the piston 5, due to the operation of the crosshead crank mechanism 6, approaches its extreme upper position, the electromagnetic valve 13 opens the nozzle hole of the pneumatic nozzle 12 and the compressed air enters the above-piston cavity of the cylinder 2. Here it expands under conditions of heating from the heat-accumulating material 3, which receives heat from the exhaust gases passing through the jacket 4, and

performs work on moving the piston 5. Part of this work is spent on compressing air in the under-piston cavity of cylinder 2 to ensure the implementation of the next working cycle of the air motor, and the remaining part can be useful.

Compared with the prototype in the proposed pneumatic piston engine for utilization of the heat of the exhaust gases of the internal combustion engine due to the presence of a cavity with heat-accumulating material, the following are excluded:

- significant temperature fluctuations in the piston volume of the cylinder due to a significant difference in the temperature of the exhaust gases of the internal combustion engine in different modes of its operation;

- uneven heating of the walls of the cylinder, caused by uneven heating around the perimeter, which does not lead to thermal stresses in the walls of the cylinder and does not limit the amount of heat that is transferred from the exhaust gases of the internal combustion engine gases to the inner cylinder space, and therefore, this engine is completely absent disadvantages characteristic of the prototype.

Claims (1)

A pneumatic piston engine for recovering the heat of exhaust gas from an internal combustion engine, comprising a crankcase with a crank mechanism located therein and a cylinder equipped with a piston, inlet, discharge, exhaust valves and a pneumatic nozzle with an electromagnetic valve, characterized in that the cylinder is equipped with a cavity with heat-accumulating material outside and a jacket for the passage of exhaust gases of the internal combustion engine.