RU51677U1 - 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 recovering the heat of the exhaust gas of the internal combustion engine contains a crankcase 1 and a cylinder 2 heated by the exhaust gas of the internal combustion engine passing through the jacket 3. In the cylinder 2 there is a piston 4 connected to the crosshead crank mechanism 5. At the bottom of the cylinder 2 are located the inlet valve 6 and discharge valve 7, an exhaust valve is located in the cylinder cover 8. The exhaust valve 7 is connected by a pipe 9 to a receiver 10 cooled by water. The receiver 10 communicates with a pneumatic nozzle 11 located in the cylinder cover 2 and equipped with a solenoid valve 12, using a pipe 13.

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, on the other -

a bypass channel for bypassing 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 organizing water circulation and creating 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.

An engine with an external supply of heat for utilizing the heat of exhaust gases is also known (Kukis BC, Neznaev D.S., Chernykh K.A. et al. Utilization engine with an external supply of heat // Improving the efficiency of power plants of wheeled and tracked vehicles: Scientific Bulletin CTOI - Issue 9. - Chelyabinsk, 2000), is a piston engine, including a crankcase with a cylinder heated by the exhaust gases of the internal combustion engine, separated by a heat-insulating spacer, in which the piston connected to the crank moves

mechanism. On one side of the crankcase there is an inlet pipe with a check valve, and on the other there is a bypass channel for transferring compressed air in the crankcase to the over-piston space. At the bottom of the cylinder there is an exhaust pipe for the release of the spent working fluid.

The disadvantage of this recovery engine is its very low efficiency, due to the compression of air in the above-piston space during intensive heating from the hot walls of the cylinder.

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

The objective of the proposal is to increase the efficiency of the engine for the utilization of the heat of exhaust gases of the internal combustion engine.

The solution to this problem is achieved by the fact that in a reciprocating pneumatic engine containing a crankcase and a cylinder heated by exhaust gas from an internal combustion engine, a piston connected to a crosshead crank mechanism moves reciprocally. When the piston moves upward through the inlet valve located in the lower part of the cylinder, air from the atmosphere enters the subsurface space, which, when the piston moves downward, is compressed and through the pressure valve located in the lower part of the cylinder enters the receiver, where it is cooled by water. From the receiver compressed

cold air is directed to a pneumatic nozzle equipped with an electromagnetic valve, which provides compressed cold air to the over-piston space when the piston is in its highest position. Compressed air, heated from the hot walls of the cylinder, expands, moving the piston down, thus doing the job.

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 the exhaust gases of the internal combustion engine.

A pneumatic piston engine for recovering the heat of the internal combustion engine exhaust gas contains: a crankcase 1 and a cylinder 2 heated by the exhaust gas of the internal combustion engine passing through the jacket 3. In the cylinder 2 there is a piston 4 connected to the crosshead crank mechanism 5. Inlet cylinder 2 is located in the lower part of the cylinder valve 6 and discharge valve 7, an exhaust valve is located in the cylinder cover 8. The exhaust valve 7 is connected by a pipe 9 to a receiver 10 cooled by water. The receiver 10 communicates with a pneumatic nozzle 11 located in the cylinder cover 2 and equipped with a solenoid valve 12, using a pipeline

13.

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

When the piston 4 moves up as a result of the rarefaction of the cylinder 2 in the sub-piston space, vacuum enters it through the inlet valve 6 from the atmosphere. After the piston 4 reaches its extreme upper position, the piston 4 moves downward, which is accompanied by compression of the air below it. When the piston 4 approaches its extreme lower position, the discharge valve 7 opens and the compressed air enters the receiver 10 through the discharge pipe 9, where it is cooled by water. Compressed and cooled air through the air duct 13 is supplied to the pneumatic nozzle 11. At the moment when the piston 4, due to the operation of the crosshead crank mechanism 5, approaches the extreme upper position, the electromagnetic valve 12 opens the nozzle hole of the pneumatic nozzle 11 and the compressed air enters the over-piston cavity of cylinder 2. Here it expands under conditions of heating from exhaust gases passing through the jacket 3, and does the work of moving the piston 4. Part of this work is spent on compressing the air ear in the piston cavity of the cylinder 2 to ensure the implementation of the next duty cycle of the pneumatic engine,

and the rest can be useful.

Compared with the prototype, the proposed pneumatic piston engine uses the cooled compressed air to implement the expansion process, as a result of which its mass and, accordingly, the amount of work it produces will be noticeably greater.

Claims (1)

A pneumatic piston engine for recovering the heat of exhaust gas from an internal combustion engine, comprising a crankcase and a cylinder with a piston and a crank mechanism located in them, characterized in that the inlet and discharge valves are located at the bottom of the cylinder, the cylinder cover is equipped with an exhaust valve and a pneumatic nozzle with an electromagnetic valve through which compressed air enters the cylinder through the pipeline from a receiver cooled by water, and on the outside the cylinder is equipped with a jacket for the passage of exhaust gases of the internal combustion engine, why the crank mechanism of the engine is made crosshead.