SU875111A1 - Heat piston engine - Google Patents

Description

(54) THERMAL PISTON MOTOR

The invention relates to mechanical engineering, in particular engine-building, and can be used in the design of heat engines. Known thermal piston engine containing at least one pair of cylinders of different diameters, of which the first, of reduced diameter, communicate through the inlet to the apan with the air intake duct and through the bypass channel with a heater, and the second, enlarged diglet, is connected through the inlet channel with a preheater and through an exhaust valve, with an exhaust line, and pistons located in cylinders connected to a common crankshaft 11. A known engine is distinguished by an increased power due to a high inflation pressure. At the same time, the dialer has a significant degree of compression, which does not allow an additional increase in its power. The purpose of the invention is to increase the power of the engine by increasing the degree of compression. This goal is achieved by the fact that an automatic valve is installed in the first cylinder bypass channel, a control valve is installed in the inlet channel of the second cylinder, and an inlet valve is made automatic in the air intake duct. Moreover, a continuous combustion chamber is made in the exhaust line and the heater is placed in this chamber. In addition, the exhaust line is provided with an exhaust gas cooler for a continuous combustion chamber. FIG. 1 shows the principal engine circuit diagram} in FIG. 2 — the carburetor circuit in FIG. 3 — the circuit with the low-temperature preheater in FIG. 4 — the dependence of the pressure P n on the cylinder on its volume. In cylinders 1 and 2 there are pistons D and 4, connected by connecting rods 5 and 6 with KOj crankshaft 7. Diameter of cylinder 1; smaller than the diameter of the cylinder 2. In the Bosflyf bushing inlet 8 and the overflow channel 9 of cylinder 1, automatic valves 10 and 11 are installed, and in the inlet 12;: exhaust 13 channels of cylinder 2 have control valves 14 and 15 connected to cam lobes 16 17 Between cylinders 1 and 2 is set to

heater 18. Figures 1 and 2 show a variant in which a continuous burn chamber 20 with a nozzle 21 and valve 22 is installed in the exhaust line 19. The fuel to the nozzle 21 is supplied by a pump 23. An exhaust gas cooler 24 seconds can be connected to the valve 22 valve 25 (figure 1). In the engine of FIG. 2, a water carburetor 26 is installed in the air intake duct 8, and FIG. 3 is a diagram of the engine in which a heater is supplied to the heater 18 from natural sources such as geothermal waters. Figure 4 shows the change in pressure of the working fluid as a function of volume.

The engine works as follows.

When the pressure of the piston 3 is down into the cylinder 1 through the air intake duct 8 and the valve 10, air is sucked in (Line 1-P, Fig. 4; after changing the direction of movement of the piston 3, the valve 10 is closed and air is compressed in cylinder 1 (line U-Ull FIG .4. When the pressure in cylinder 1 exceeds the air pressure in heater 18, the valve 11 opens and the air from cylinder 1 is forced out into the heater 18 through the bypass channel 9 (line SH-V, Fig. 4). Then the piston 3 begins to move downwards and The process described in cylinder 1 is repeated.

When the piston 4 moves downwards, the cam 16 opens the valve 14. Compressed and heated air from the heater 18 through the inlet channel 12 enters the cylinder 2 and, expanding, performs useful work (line IV-V, figure 4). After changing the direction of movement of the piston 4, the valve 14 closes and the valve 15 opens. The exhaust air through the exhaust channel 13 is supplied to the nozzle 21. Here, the fuel is supplied by a pump 23, which is mixed with air and burns in a continuous combustion chamber 20. The combustion process goes on continuously, several pairs of cylinders are connected to the preheater 18. The gases from the chamber 20 through the valve 22 enter the cooler 24 and are released through the valve 25 into the atmosphere. When cooled, the volume of gases decreases, which allows for additional work.

To reduce the temperature, air can be mixed in the carburetor 26 (Fig. 2 with water.

Heat can be supplied to the air not only by burning fuel, but also by taking heat from natural sources, which allows direct conversion, for example, of the thermal energy of geometric water into mechanical energy.

In all cases, the engine does not change -.

Since there are no restrictions on the magnitude of the compression ratio, it can be increased, which allows for a corresponding increase in engine power.

Claims (3)

1.Thermal piston engine containing at least one pair of cylinders of different diameters, of which the first, of reduced diameter, communicates through the inlet valve to the air intake duct and through the / bypass channel with a heater, and the second, enlarged diameter is connected through the inlet channel with a preheater and through an exhaust valve with an exhaust line, and pistons placed in cylinders associated with a common crankshaft, characterized in that, in order to increase power, by increasing the compression ratio, the bypass An automatic valve is installed in the channel of the first cylinder, a control valve is installed in the inlet channel of the second cylinder, and a water carburetor is installed in the air intake duct and the inlet valve is automatic. 2. The engine according to claim 1, about tl and h and y and the fact that in the exhaust line is a continuous combustion chamber and the heater is placed in this camera. 3. The engine according to claim 2, characterized by the fact that the exhaust line is made with an exhaust gas cooler for a continuous combustion chamber. Sources of information taken into account in the examination 1. USSR author's certificate in application 2406677, cl. F 02 B 75/12, 1976. . I tJ M I I t t t I I t i