阅读说明：本技术 余热利用内燃机 (Waste heat utilization internal combustion engine ) 是由 岳佐荣 张召明 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种余热利用内燃机,包括喷油气缸和喷水气缸,其中半数为喷油气缸,另一半数为喷水气缸,喷油气缸的排气道经三通管连接喷水气缸的进气道,整体构成余热利用内燃机。本发明中的喷水气缸充分利用喷油气缸排出的废气余热,提高内燃机的热效率,相对降低油耗,增强内燃机的经济性。(The invention discloses a waste heat utilization internal combustion engine which comprises an oil injection cylinder and a water spray cylinder, wherein half of the oil injection cylinder and the other half of the water spray cylinder are respectively provided with the oil injection cylinder and the water spray cylinder, and an exhaust passage of the oil injection cylinder is connected with an air inlet passage of the water spray cylinder through a three-way pipe, so that the waste heat utilization internal combustion engine is integrally formed. The water spray cylinder fully utilizes the waste heat of the exhaust gas discharged by the oil spray cylinder, improves the heat efficiency of the internal combustion engine, relatively reduces the oil consumption and enhances the economical efficiency of the internal combustion engine.)

1. the waste heat utilization internal combustion engine is characterized in that: the waste heat utilization internal combustion engine comprises an oil injection cylinder and a water injection cylinder, wherein half of the oil injection cylinder and the other half of the water injection cylinder are respectively connected with an air inlet channel of the water injection cylinder through a three-way pipe, and an exhaust channel of the oil injection cylinder is connected with an air inlet channel of the water injection cylinder through the three-way pipe, so that the waste heat utilization internal combustion engine is integrally formed.

2. The waste heat utilizing internal combustion engine according to claim 1, wherein: the volume of the water spraying cylinder is expanded to be several times of that of the oil spraying cylinder.

3. The waste heat utilizing internal combustion engine according to claim 1, wherein: the oil injection cylinder and the water injection cylinder are arranged in a single-row eight-cylinder, V8-cylinder or horizontal opposite 8-cylinder structure.

Technical Field

The invention relates to an engine in the field of machinery, in particular to a waste heat utilization internal combustion engine.

Background

As is known to all, most of high-temperature and high-pressure gas after combustion of the existing internal combustion engine is directly discharged, and the following problems exist in the using process: 1. the waste heat of the exhaust gas discharged by the internal combustion engine cannot be further utilized, and the heat efficiency of the internal combustion engine is low; 2. high oil consumption and poor economy of the internal combustion engine; 3. the discharge of waste gas is large, which is not beneficial to environmental protection.

Disclosure of Invention

The purpose of the invention is: the waste heat utilization internal combustion engine is designed, the water spraying cylinder fully utilizes the waste heat of the exhaust gas discharged by the oil spraying cylinder, the heat efficiency of the internal combustion engine is improved, the oil consumption is relatively reduced, and the economical efficiency of the internal combustion engine is enhanced.

The technical solution of the invention is as follows: the waste heat utilization internal combustion engine comprises an oil injection cylinder and a water spray cylinder, wherein half of the oil injection cylinder and the other half of the water spray cylinder are respectively connected with an air inlet channel of the water spray cylinder through a three-way pipe, and an exhaust channel of the oil injection cylinder is connected with an air inlet channel of the water spray cylinder through the three-way pipe, so that the waste heat utilization internal combustion engine is integrally formed.

In a further development, the volume of the water injection cylinder is increased by a factor of the volume of the oil injection cylinder.

In a further design, the oil injection cylinder and the water injection cylinder are arranged in a single-row eight-cylinder, V8-cylinder or horizontal opposite 8-cylinder structure.

The invention has the advantages that: 1. the waste heat of the exhaust gas discharged by the oil injection cylinder is further utilized by the water injection cylinder, so that the heat efficiency of the internal combustion engine is improved; 2. the internal combustion engine is composed of half of oil injection cylinders and half of water injection cylinders, and the water injection cylinders replace the oil injection cylinders, so that the oil consumption is saved, and the economical efficiency of the internal combustion engine is improved; 3. the exhaust emission of the oil injection cylinder is reduced, and the environment is protected.

Drawings

Fig. 1 is a schematic diagram of a single-row eight-cylinder four-stroke internal combustion engine.

Detailed Description

The technical solutions of the present invention are further described below with reference to the accompanying drawings, but the technical solutions are not to be construed as limiting, and some parts commonly used in the industry are not shown in the drawings for the sake of simplicity.

As shown in fig. 1, the waste heat utilization internal combustion engine comprises an oil injection cylinder and a water injection cylinder, wherein half of the oil injection cylinder and the other half of the water injection cylinder are respectively connected with an air inlet channel of the water injection cylinder through a three-way pipe, and an exhaust channel of the oil injection cylinder is connected with an air inlet channel of the water injection cylinder through the three-way pipe, so that the waste heat utilization internal combustion engine is integrally formed.

In a further development, the volume of the water injection cylinder is increased by a factor of the volume of the oil injection cylinder.

In a further design, the oil injection cylinder and the water injection cylinder are arranged in a single-row eight-cylinder, V8-cylinder or horizontal opposite 8-cylinder structure.

The working principle of the invention is as follows: the oil injection cylinder is in four-stroke cycle reciprocating and is used for air intake, compression, work application and exhaust; the water spraying cylinder is also in four-stroke cyclic reciprocation, high-temperature gas discharged by the fourth stroke of the oil spraying cylinder is sprayed into the water spraying cylinder through a three-way pipe, the 1 st stroke is compressed through the 2 nd stroke after air intake, then the 3 rd stroke does work, finally the 4 th stroke exhausts, and waste gas waste heat of the oil spraying cylinder is recycled by the water spraying cylinder; the difference lies in that: the 1 st stroke of the water spraying cylinder is used for air intake, and the intake is not fresh air but high-temperature gas discharged in the fourth stroke of the oil spraying cylinder; the 2 nd stroke of the water spraying cylinder is compressed, and when the piston reaches the top dead center, the temperature of the gas is much higher than that of the gas of the oil spraying cylinder when the gas expands to do work; the 3 rd stroke of the water spraying cylinder does work, the sprayed fuel oil is not fuel oil but hot water, and the sprayed mist hot water quickly expands to do work after meeting high-temperature gas and the four walls of the cylinder, so that the aim of utilizing waste heat is fulfilled; and (4) exhausting in the 4 th stroke of the water spraying cylinder, and exhausting waste gas containing water vapor to finish a cycle process.

Taking the existing double-cylinder internal combustion engine as an example: the double-cylinder internal combustion engine is formed by connecting two independent single-cylinder internal combustion engines with each other through connecting shafts (crankshafts and camshafts), four-stroke cycles are respectively completed during work, and power superposition is realized due to the connecting shafts in the same direction, namely the power of the whole double-cylinder internal combustion engine = the power of a single-cylinder internal combustion engine + the power of a single-cylinder internal combustion engine, and then the fuel quantity of the whole double-cylinder internal combustion engine = the fuel quantity of the single-cylinder internal combustion engine + the oil quantity of the single-cylinder internal combustion engine.

The invention relates to a double-cylinder waste heat utilization internal combustion engine, which has the following structure: the oil supply system of one cylinder of the existing double-cylinder internal combustion engine is changed into a water supply system, and an exhaust passage of an oil injection cylinder is connected with an air inlet passage of a water injection cylinder by a three-way pipe; when the oil injection cylinder performs a fourth stroke, the discharged high-temperature and high-pressure gas is injected into an air inlet channel of the water injection cylinder through the three-way pipe, the water injection cylinder sucks high-temperature gas (1 st stroke intake), and completes a cycle of utilizing waste gas waste heat through compression (2 nd stroke compression), water injection (3 rd stroke acting) and exhaust (4 th stroke exhaust); the fuel quantity of the double-cylinder waste heat utilization internal combustion engine is equal to the fuel quantity of one cylinder of the original double-cylinder internal combustion engine, and the power of the fuel of the two cylinders of the double-cylinder internal combustion engine is greater than the power of the fuel of one cylinder of the double-cylinder waste heat utilization internal combustion engine; of course, other waste heat utilization internal combustion engines work the same way.

In order to better improve the thermal efficiency of the internal combustion engine, the volume of the water spray cylinder is expanded to be several times of that of the oil spray cylinder, so that the heat of high-temperature and high-pressure gas in the oil spray cylinder is fully utilized, and the thermal efficiency of the internal combustion engine is better improved; after the design, the power of the water spraying cylinder and the power of the oil spraying cylinder are different, and the crankshafts, the connecting rods and the pistons of the water spraying cylinder and the oil spraying cylinder are different, so that the stability of the internal combustion engine is influenced, and the single-row eight cylinders, the V8 cylinders or the horizontal opposite 8 cylinders are adopted in the structure, so that the problem is solved.

Table 1 is a duty cycle table for a single-row eight-cylinder four-stroke internal combustion engine; table 2 is a ranking table in which the exhaust passages of four oil injection cylinders of the single-row eight-cylinder four-stroke internal combustion engine correspond to the intake passages of four water injection cylinders; the following is an example of a single-bank eight-cylinder internal combustion engine: in the eight-cylinder internal combustion engine, 4 cylinders are oil injection cylinders, and the other 4 cylinders are water injection cylinders; the high-temperature gas discharged by the fourth stroke of the oil injection cylinder is injected into the water injection cylinder (suction in the 1 st stroke), compressed (compression in the 2 nd stroke), sprayed with water (acting in the 3 rd stroke) and exhausted (exhaust in the 4 th stroke) through the three-way pipe, and a cycle of waste gas waste heat recycling is completed.

The principle is as follows: in the operation process of the crankshaft, two large pistons and two small pistons move upwards simultaneously, and the other two large pistons and two small pistons move downwards simultaneously, namely balance and stable rotation is achieved; in four operating strokes, each stroke has one oil spraying cylinder to do work and one water spraying cylinder to do work, so that the internal combustion engine rotates stably; the exhaust passages of the four oil injection cylinders correspond to the air inlet passages of the four water injection cylinders, so that each pair of exhaust and air inlet can be performed synchronously, the air inlet resistance of the water injection cylinders is reduced, the air inlet amount is improved, and the waste heat of the waste gas can be further utilized.

Table 1: ignition or oil (water) injection sequence (3, 7) - (1, 6) - (4, 8) - (2, 5)

Table 2: the exhaust passages of the four oil injection cylinders correspond to the sequencing of the air inlet passages of the four water injection cylinders:

（2，4）——（7，5）——（1，3）——（8，6）。