KR200222154Y1 - Constant Temperature Engine - Google Patents

Abstract

The present invention relates to an internal combustion engine (engine) that converts petroleum / chemical energy into mechanical power. In a conventional crank piston engine operated in a constant volume exhaust process, the combustion gas having the expansion process has a considerable pressure and thermal energy, but these energy are not converted into mechanical power and discharged into the atmosphere, which may cause energy loss. In addition, there was a problem that causes exhaust noise.

The present invention combines a power generator 20 composed of a pair of male and female screw rotors 21 and 22 with a conventional crank piston engine to enter exhaust gas discharged from a cylinder into the power generator, and then gradually powers the power generator. It is designed to expand and to produce energy, which converts the energy thrown away by conventional engines into mechanical power and removes engine exhaust noise. In more detail, the present invention is to create a sealed space (25) in which a pair of male and female screw rotors (21, 22) gradually changes in volume while rotating, and in the sealed space, discharged from a conventional engine It is thermally efficient, operating in a constant temperature exhaust process, by expanding the exhaust gas to the pressure corresponding to the inlet and atmospheric temperature, recovering both the pressure and thermal energy of the exhaust gas with mechanical power and eliminating exhaust noise. It is a greatly improved engine.

Description

Constant Temperature Engine {Constant Temperature Engine}

The present invention converts the pressure and thermal energy of the exhaust gas emitted to the atmosphere from the internal combustion engine operated in the static exhaust process into mechanical power, and also removes the exhaust noise of the engine, and operates the internal combustion engine operating in the constant temperature exhaust process. It is about.

In conventional crank piston engines, the pressure of the exhaust gas (pressure 2-3 kgf / cm2 when the piston reaches bottom dead center; Prof. Hyo-Jong / CHO Jae-sung, see page 420/439 of Hyosung's internal combustion engine steel) Emissions not only result in energy losses, but also have defects that cause exhaust noise. In addition, in a conventional piston engine, a muffler must be installed to remove this exhaust noise, and the exhaust resistance of the exhaust gas in the silencer is considerable, so that the exhaust gas must be exhausted by using already produced power. There was a disadvantage that the output of the. In addition, in the conventional engine, the thermal energy of the exhaust gas, which is considerable high temperature of the exhaust gas, is usedlessly discarded into the atmosphere. This loss is known to be about 32% of the given fuel energy (about 28% cooling loss through the piston wall), more than about 30% of the useful axial power. (Refer to Cho Jin-ho, Academic Speaker, Internal Combustion Engine Engineering, p. 59, Lim Dal-yeon Publishing Co.

The present invention gradually eliminates this exhaust gas while generating power in a confined space by a pair of screw rotors before releasing noise-causing exhaust gases into the atmosphere to be usedlessly in conventional crank piston engines. After expanding to, it is discharged to the atmosphere through the exhaust gas cooler, and it is operated in the constant temperature exhaust process to convert both the pressure and thermal energy of the exhaust gas into useful mechanical power (significantly improved thermal efficiency) and also eliminates the exhaust noise. to be

In a conventional piston engine, the expansion of the exhaust gas proceeds as the exhaust valve is opened, and the pressure of the exhaust gas does not produce power and causes noise, which is transmitted directly to our ears because the cylinder is open to the atmosphere. However, in the present invention, the exhaust gas is gradually expanded while generating power in an enclosed space, thereby producing no noise.

In the present invention, when the exhaust valve is opened, exhaust gas having a pressure of 2-3 kgf / cm 2 discharged from the engine enters the power generator via the catalytic converter. The power generator consists of a pair of male and female, helical screw-type rotors based on a cycloid curve, which is designed to repeatedly create a closed space where the rotor rotates and changes in volume. This enclosed space grows gradually with the rotation of the rotor, and gradually decreases and eventually disappears as the next growth is opened to the outlet. In other words, this power generator is similar in structure to commercial screw type air compressors (see www.air.ingersoll-rand.com or www.seahcomp.com homepage). Otherwise, it is designed to generate power by receiving gas with pressure (thermodynamically, crank / piston type or screw type, all air compressors generate power by supplying compressed gas back instead of power). Exhaust gases with significant pressure (2-3 kg / cm2) entering these power generators, in contrast to the expansion in the conventional engine muffler, resisting and consuming power (at pressure close to 0 kg / cm2), are sealed. Produces power to rotate the rotor while expanding to a defined pressure in the space (below atmospheric pressure) (the exhaust gas does not convert to 100% useful power, but at least does not consume the power of the main engine as in conventional silencers) The rotor's rotational force is transmitted to the engine's flywheel and used as the engine's power. Next, the expanded exhaust gas enters the air fin cooler through the exhaust port as the rotor rotates, and the exhaust gas is contracted (condensation of water vapor in the exhaust gas). The main space of the rotors of the exhaust outlet side is also contracted, so that the steam is condensed in the condenser in the steam turbine engine and the power is generated in the LP turbine. Next, the exhaust gas passing through the cooler is discharged to the atmosphere by the exhaust gas discharge blower.

Thus, in the present invention, the pressure / heat energy of the exhaust gas in the conventional piston engine is not discarded and all are converted into useful mechanical power, thus eliminating exhaust noise. In terms of thermodynamics, the present invention works by the Constant Temperature Exhaust Processing, which greatly improves the thermal efficiency of the engine.

1 is a three-dimensional view of the power generator male and female rotors of the present invention

FIG. 2 is an isometric view of the rotors seen from the back of FIG.

3 is a three-dimensional view of the closed space of the power generator rotors of the present invention

Figure 4 is a three-dimensional view showing the configuration of the power generator of the present invention

5 is a front view of the power generator of the present invention;

6 is a side view of the power generator of the present invention;

7 is a cross-sectional view of the power generator of the present invention (section A-A of FIG. 5)

8 is a longitudinal cross-sectional view of the power generator of the present invention (section B-B of FIG. 6)

9 is an exemplary operation diagram of the power generator rotors of the present invention.

10 is a schematic view showing the operation of the power generator rotors of the present invention.

11 is an exhaust gas flow diagram showing a configuration of the present invention.

12 is a temperature-entropy diagram showing the thermodynamic cycle of the present invention.

13 is a curve diagram of the cycloid of the power generator male rotor of the present invention.

14 is a curved view of the yaw portion of the power generator arm rotor of the present invention;

*** Symbol Designations Used in Drawings ***

10: main engine (normal piston engine)

11: main engine air intake

12: main engine air vent

13: Main engine exhaust manifold

14: catalytic converter

15: Main engine flywheel

20: Power Generator Body Chamber of the Invention

21: Male Rotor

22: Female Rotor

23: Power Output Gear

24: Power Generator Rotor Baby Main Space

25: Power Generator Closed Space

26: Power Generator End Plate

27: power generator exhaust inlet

28: power generator exhaust outlet

29: Timing Gear Box

30: Air Fin Cooler

40: Exhaust Gas Blower

In the present invention, as shown symbolically in Fig. 11, a power generator 20 composed of a pair of male and female screw rotors 21 and 22 in a conventional crank piston engine 10 (hereinafter referred to as a main engine) includes a main engine 10. Right next to the starting motor, the power generated by the power generator 20 is transmitted to the main engine flywheel, and the exhaust gas is supplied from the main engine manifold via the catalytic converter 14 which is an exhaust gas purification device. A power generator exhaust gas inlet 27 was entered, and an exhaust gas cooler 30 having a structure similar to a radiator of a main engine and a commercial gas (exhaust gas discharge) blower 40 were additionally installed to exhaust the power generator. Exhaust gas discharged from the gas outlet 28 is cooled in the exhaust gas cooler 30 and discharged to the atmosphere by the exhaust gas discharge blower 40.

The power generator 20 includes a male and female helical screw type rotor shown in FIGS. 1 and 2 in a body chamber to rotate 3 (male) to 2 (female) by a timing gear (see FIG. 8). ) As shown in FIG. 4. An exhaust gas inlet 27 is formed in the end plate 26 of the power generator, and an exhaust gas outlet 28 is formed in the main body as shown in FIGS. 5 and 7.

The shape of the rotors 21 and 22 of the present invention is very similar to the rotor of the Rotary Piston Engine With Slide Gate (US Pat. No. 5, 101,782; 1992, 4.7), which was invented and obtained a US patent. FIG. 13 is a cycloid curve C showing the trajectory of one point P while circle B rolls around the circle A without sliding. Fig. 14 is a curve C showing the trajectory of one point P as circle A rolls around the circle B without sliding. The rotors of the present invention are a helical screw type, and the protrusion curve of the male rotor 21 (see FIG. 13) is the outer diameter circle B of the female rotor 22 as the yaw portion A of the male rotor. It is a cycloid curve (C) which draws on the circumference of) without sliding. The curve of the yaw portion of the arm rotor (see FIG. 14) is a curve C in which the male circle portion A of the male rotor rolls on the circumference of the outer diameter circle B of the arm roller without sliding. The rotors are helical screw types based on these curves and can be easily machined because they can be defined mathematically. These rotors implement an enclosed space 25 that rotates repeatedly as shown in FIG. 3. 9 shows that as the rotors rotate, the recesses of the female rotor and the protrusions of the male rotor always meet each other. In practice, there are some clearances between the male rotor and the female rotor in consideration of thermal expansion, but geometrically, the outermost protrusion of the female rotor always comes in contact with the male rotor protrusion curve. Accordingly, when the rotors rotate, the rotors form an enclosed space 25 surrounded by a thick line as shown in FIG. 3.

In the power generator, as the rotors rotate, the baby rotor space 24 (see FIG. 3) is formed on the exhaust gas inlet 27 side, and the space grows gradually, and the protrusion of the male rotor rotates. Accordingly, when the exhaust gas inlet 27 is blocked, it becomes a sealed space 25 that is isolated from the exhaust gas inlet, and the sealed space continues to grow gradually, and when it is grown, it moves toward the exhaust gas outlet 28 and is connected to the outlet. It is to be gradually diminished and eventually to be destroyed. This process is repeated twice in one revolution of the male rotor.

In the power generator, the baby rotor recess space 24 described above is always open to the exhaust gas inlet 27 while continuously growing as the rotor rotates (see FIG. 9). Accordingly, as shown in FIG. 10, exhaust gas from the main engine flows continuously from the manifold 13 to the exhaust gas inlet 27 via the catalytic converter 14. When the baby rotor main space grows to some extent, the protrusion of the male rotor blocks the exhaust gas inlet, so that the baby rotor main space becomes a sealed space that is isolated from the exhaust gas inlet 27 (the supply of exhaust gas is stopped). The exhaust gas expands to generate power to rotate the rotor. This power is transmitted to the main engine flywheel by the power output gear 23 of the timing gear box 29. The expanded exhaust gas is moved toward the outlet 28, and is discharged from the power generator 20 to the outside as the sealed space is reduced through the exhaust gas outlet 28.

10 is converted to the operation of the cylinder / piston to express the operation of these rotors are expressed. In this power generator, the exhaust gas is gradually made while rotating the rotor in an enclosed space, as in the expansion process shown in FIG. 10, thereby making no noise. Noise is emitted when it is released into the atmosphere and expands between stars.

On the other hand, the exhaust gas discharged from the power generator has some heat energy because its pressure is converted to power by expansion of the closed space of the rotor, but is still at a high temperature. In the present invention, in order to convert this thermal energy into mechanical power, the exhaust gas cooler 30 described above is disposed in front of the radiator of the main engine 10, and the exhaust gas discharged from the exhaust gas outlet 28 of the power generator is transferred to the cooler. The exhaust gas is discharged to the atmosphere by the exhaust gas discharge blower 40 via the gas. Therefore, the exhaust gas passing through the cooler is contracted (condensing some water vapor) by cooling near room temperature, so that the steam is condensed by the condenser in the steam turbine engine, and the power is generated in the last stage LP turbine. Power for rotating the rotor of the power generator 20 is generated.

12 is a thermo-entropy diagram thermodynamically showing the power generation process of the present invention. The area of the inventive cycle (A-B-C-D-A) operated in the constant temperature exhaust process (A-B-C-E-A) is larger than the area A-E-D-A than the auto cycle (A-B-C-E-A) of the gasoline engine, which is a constant volume exhaust (Constant Volume Exhaust) process. Therefore, the thermal efficiency of the present invention is thermodynamically higher than that of the conventional engine.

The back pressure (pressure when the exhaust valve is opened in the main engine) in the present invention is determined by the rotation ratio of the main shaft (crankshaft) of the engine and the rotor of the power generator. In other words, by setting the rotation ratio with the main shaft, the back pressure in the present invention can be made equal to the back pressure of a conventional engine, and can also be made smaller. If the back pressure is made very small, exhaust noise (expansion wave) in which the exhaust gas escapes the cylinder is expected as the exhaust valve opens, but in the present invention, the inner space of the exhaust manifold 13 is opened to the atmosphere as in a conventional engine. Because it is not, exhaust noise is not transmitted to the atmosphere.

The present invention operated in the constant temperature exhaust process is not only automatically remove the exhaust noise of the engine, but also is expected to devise a significant contribution to energy saving nationally by improving the thermal efficiency of the engine.

Claims (1)

In internal combustion engines driven by the Constant Volume Exhaust process and crank / piston, The power generator 20 implements a closed space 25 in which the rotor rotates repeatedly by a pair of male and female rotors 21 and 22, which are helical screw types based on a cycloid. And a power output gear 23, mounted on the main engine such that the power output gear is connected to the main output shaft 15 of the main engine 10, and an exhaust gas cooler similar to a radiator of the main engine. 30 and a known gas blower 40, The exhaust gas of the main engine 10 enters the exhaust gas inlet 27 of the power generator via the catalytic converter 14 in the manifold 13 and then enters the confined space 25 of the rotor in this power generator. Thereby gradually expanding, being cooled as it enters the exhaust gas cooler 30 at the next exhaust gas outlet 28 and discharged to the atmosphere by the gas blower 40, A constant temperature exhaust engine operating in a thermodynamic constant temperature exhaust process, which converts all the pressure / heat energy of the exhaust gas of the main engine 10 into mechanical power and removes exhaust noise.