RU59737U1 - PNEUMATIC V-SHAPED 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 V-shaped piston engine for utilizing the heat of exhaust gas of an internal combustion engine contains: a crankcase 1 with a small 2 and a large 3 cylinders arranged in a V-shape, in which the pistons 4 and 5 move with a crank mechanism 6. A small cylinder 2 having an intake valve 7 and discharge valve 8, discharge pipe 9 is connected to the receiver 10, which is cooled by water. The receiver 10 through the air duct 11 is connected to the pneumatic nozzle 12, which is controlled by the electromagnetic valve 13, and is located in a large cylinder, the cover of which is equipped with an exhaust valve 14, and the outer surface is surrounded by a cavity 15 filled with a heat-accumulating substance, which, in turn, is surrounded by a cavity 16 for exhaust gas passage ICE.

1 s.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 V-shaped 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.

An engine with external heat supply for utilizing the heat of exhaust gases (Kukis BC, Neznaev D.S., Chernykh K.A. et al. Utilization engine with external heat supply // Improving the efficiency of power plants of wheeled and tracked vehicles: Scientific Bulletin of the ChVAI. - Issue 9. - Chelyabinsk, 2000), is a piston engine, including a crankcase with a cylinder, separated by a heat-insulating spacer, in which the piston with a crank mechanism moves. 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 need to compress the air in the above-piston space under conditions of intense heating from the hot walls of the cylinder.

Also known is a pneumatic V-shaped piston engine for utilizing the heat of exhaust gases of an internal combustion engine (Kukis BC, Tkachenko A.V. et al. A pneumatic V-shaped piston engine for utilizing the heat of exhaust gases of an internal combustion engine. Utility certificate. RU 53381 U1 7 F 02 G 5/02. 05/10/06 Bul. No. 13). The proposed engine for utilizing the heat of exhaust gas from an internal combustion engine contains: a crankcase with small and large cylinders arranged in a V-shape, in which the pistons move and with a crank mechanism. A small cylinder having an inlet valve and a discharge valve, the discharge pipe is connected to the receiver, which is cooled by water. The receiver communicates with a pneumatic nozzle, which is controlled by an electromagnetic valve, and is located in a large cylinder, the outer part of which is surrounded by a cavity for the passage of exhaust gases of the internal combustion engine, and the lid is equipped with an exhaust valve.

The disadvantages of this engine are:

significant temperature fluctuations in the over-piston volume of the large 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 large cylinder, since hot exhaust gases blow it on only one side. This leads to thermal stresses in the walls of the large cylinder and limits the amount of heat that is transferred from the gases into the inner cylinder space.

This engine design is the closest to the proposed technical essence and is taken 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 walls of a cylinder of a larger diameter.

The solution to this problem is achieved by the fact that the outer walls of the cylinder of larger diameter are surrounded by a cavity filled with a heat-accumulating substance, and a cavity for the passage of exhaust gases of the internal combustion engine, from which heat is transferred to the heat-accumulating substance.

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 V-shaped piston engine for utilizing the heat of the exhaust gases of the internal combustion engine.

The proposed pneumatic V-shaped piston engine for utilizing the heat of exhaust gas of an internal combustion engine contains: a crankcase 1 with a small 2 and a large 3 cylinders arranged in a V-shape, in which the pistons 4 and 5 move with a crank mechanism 6. A small cylinder 2 having an intake valve 7 and discharge valve 8, discharge pipe 9 is connected to the receiver 10, which is cooled by water. The receiver 10 through the air duct 11 is connected to the pneumatic nozzle 12, which is controlled by the electromagnetic valve 13, and is located in a large cylinder, the cover of which is equipped with an exhaust valve 14, and the outer surface is surrounded by a cavity 15 filled with a heat-accumulating substance, which, in turn, is surrounded by a cavity 16 for exhaust gas passage ICE.

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

When the piston 4 is moved down as a result of the rarefaction of the small cylinder 2 in the above-piston space, the vacuum in

intake valve 7 receives air from the atmosphere. After the piston 4 reaches its lowest position, the intake valve 7 starts the upward movement of the piston 4, which is accompanied by compression of the air above it. When the piston 4 approaches its extreme upper position, the discharge valve 8 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 11 is supplied to the pneumatic nozzle 12. At the moment when the piston 5, due to the operation of the crank mechanism 6, approaches its extreme upper position, the electromagnetic valve 13 opens the nozzle hole of the pneumatic nozzle 12 and is compressed air enters a large cylinder 3, the walls of which are heated externally by a heat-accumulating substance, which, in turn, is heated by the exhaust gases of the internal combustion engine. The air, expanding under heating conditions, does the work of moving the piston 5. Part of this work is spent subsequently to compress the air in the small cylinder 2 and ensure the implementation of the next working cycle of the pneumatic engine, and the remaining part can be useful.

Compared with the prototype, the proposed pneumatic V-shaped piston engine allows you to provide:

1) higher efficiency, due to an increase in the temperature of the working fluid in the above-piston space of the large cylinder at partial operating modes of the piston ICE due to the energy accumulated by the heat-accumulating substance when operating at full load;

2) uniform heating of the walls of the large cylinder of the chamber by the exhaust gases of the internal combustion engine.

Claims (1)

Pneumatic V-shaped piston engine for recovering the heat of exhaust gas from an internal combustion engine, with a crank mechanism and pistons located in the crankcase and cylinders of various diameters, with air compression in a small cylinder equipped with intake and exhaust valves, and expansion of compressed air in a large cylinder, equipped with a pneumatic nozzle with a solenoid valve for supplying compressed air and an exhaust valve, characterized in that the cylinder of larger diameter is surrounded by a cavity filled with heat-accumulating things stvom which, in turn, surrounded by a cavity for the internal combustion engine exhaust gas inlet.