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CN-121976877-A - Efficient internal combustion engine with multistage auxiliary cylinder group

CN121976877ACN 121976877 ACN121976877 ACN 121976877ACN-121976877-A

Abstract

The invention belongs to the technical field of heat engines, and particularly relates to a high-efficiency internal combustion engine with a multistage auxiliary cylinder group. The engine comprises a positive cylinder group, auxiliary cylinder groups and a gas public channel, wherein the positive cylinder group comprises a plurality of positive cylinders with one end being fed or two ends being fed, fuel is combusted in the positive cylinders, waste gas discharged by the positive cylinder group is utilized by the auxiliary cylinder groups, the auxiliary cylinder groups are arranged in multiple stages, each stage of auxiliary cylinder group comprises n auxiliary cylinders, n is greater than or equal to 1, each auxiliary cylinder is an internal combustion engine type auxiliary cylinder with a bidirectional pushing piston structure, the gas public channel is communicated with an inlet valve of each auxiliary cylinder of the current stage, and the gas public channel supplies gas for each auxiliary cylinder. The invention utilizes the multistage auxiliary cylinder group to apply work for multiple times, almost completely utilizes the energy of the fuel gas, thoroughly solves the problem that the waste gas takes away a large amount of energy, greatly improves the efficiency and the power of the internal combustion engine, has large energy-saving and emission-reducing effects, and has compact structure, high power density and wide application range, and the auxiliary cylinder does not need an oil supply system and an ignition system and is simpler and easier to manufacture than the positive cylinder.

Inventors

  • LI ZHONGFU
  • LI YU
  • You Wenhan

Assignees

  • 呼伦贝尔市忠福科技开发有限公司

Dates

Publication Date
20260505
Application Date
20260318

Claims (7)

  1. 1. The efficient internal combustion engine with the multistage auxiliary cylinder groups is characterized by comprising a positive cylinder group (1), an auxiliary cylinder group and a gas public channel (3), wherein the positive cylinder group (1) comprises a plurality of positive cylinders with one end being air-inlet or two ends being air-inlet, fuel is combusted in the positive cylinder group, and discharged waste gas is utilized by the auxiliary cylinder group, the positive cylinder group (1) supplies gas for the auxiliary cylinder group, the auxiliary cylinder groups are arranged in a multistage manner, and two adjacent auxiliary cylinder groups are communicated through the gas public channel (3); each stage of auxiliary cylinder group comprises n auxiliary cylinders (2), n is greater than or equal to 1, each auxiliary cylinder (2) is an internal combustion engine auxiliary cylinder with a bidirectional pushing piston structure, the gas common channel (3) is communicated with the inlet valve of each auxiliary cylinder (2) at the same stage, and the gas common channel (3) supplies gas for each auxiliary cylinder (2) at the same stage.
  2. 2. A highly efficient internal combustion engine with a multistage auxiliary cylinder group according to claim 1, characterized in that the gas common channel (3) is provided with at least one gas inlet channel (4) and at least one gas outlet channel (5), the gas inlet channel (4) being in communication with the exhaust valve of the positive cylinder or the exhaust valve of each auxiliary cylinder (2) in the preceding stage of the auxiliary cylinder group, the gas outlet channel (5) being in communication with the intake valve of each auxiliary cylinder (2) in the auxiliary cylinder group of the present stage.
  3. 3. The efficient internal combustion engine with the multi-stage auxiliary cylinder groups according to claim 2 is characterized in that all gas exhausted by the positive cylinder groups (1) enters a gas public channel (3) through the gas inlet pipeline (4), is communicated with the inlet valves of all auxiliary cylinders (2) in the first-stage auxiliary cylinder groups through the gas outlet pipeline (5), enters the auxiliary cylinders (2) through the auxiliary cylinder inlet valves to push pistons to do work, and gas exhausted by the upper-stage auxiliary cylinder groups enters the lower-stage auxiliary cylinder groups through the lower-stage gas public channel (3) to do work in the lower-stage auxiliary cylinder groups.
  4. 4. A high-efficiency internal combustion engine with a multi-stage auxiliary cylinder group according to claim 2, characterized in that the cylinder head of the auxiliary cylinder (2) is provided with at least one inlet valve and at least one outlet valve, each inlet valve being in communication with the gas common channel (3).
  5. 5. The efficient internal combustion engine with the multi-stage sub-cylinder group as claimed in claim 1, wherein the diameters of the sub-cylinders (2) in the multi-stage sub-cylinder group are gradually decreased, and the overall mass of the sub-cylinders (2) and the connected components in the multi-stage sub-cylinder group is gradually decreased.
  6. 6. A highly efficient internal combustion engine with a multi-stage sub-cylinder group according to claim 1, characterized in that the phase difference between n of the sub-cylinders (2) in the sub-cylinder group is 360 °/n.
  7. 7. A highly efficient internal combustion engine with a multistage auxiliary cylinder group according to claim 1, characterized in that the auxiliary cylinder (2) sprays water or volatile liquid into the auxiliary cylinder (2) in the intake stroke or power stroke, and the water or volatile liquid is vaporized by means of gas at high temperature to increase the air pressure and increase the power to the piston.

Description

Efficient internal combustion engine with multistage auxiliary cylinder group Technical Field The invention belongs to the technical field of heat engines, and particularly relates to a high-efficiency internal combustion engine with a multistage auxiliary cylinder group. Background During operation of an internal combustion engine, the energy carried away by the combustion gases (exhaust gases) is a major part of the energy loss, and trying to use this part of energy is a central measure for improving fuel utilization. In the prior art, scientific researchers develop a plurality of auxiliary cylinders which utilize the gas (waste gas) discharged by the positive cylinder of the internal combustion engine to do work, but all have the obvious defects of low waste gas utilization rate, heavy running system or serious influence on the exhaust of the heat engine, and the practicability is poor. At present, the existing internal combustion engine type auxiliary cylinder (patent number ZL 201810384373.1) and steam engine type auxiliary cylinder (patent number ZL 2018103840517) can do work by effectively utilizing the fuel gas discharged from the positive cylinder, so that the power and efficiency of the internal combustion engine are improved, but the fuel gas only performs one-time work in the positive cylinder and only performs one-time work in the auxiliary cylinder, the working distance is only doubled, the fuel gas discharged from the auxiliary cylinder still carries a large amount of energy, the problem of fuel waste is not solved, and the existing auxiliary cylinder is of a one-way pushing piston structure, and the power density is lower. Disclosure of Invention Aiming at the defects and shortcomings of the prior art, the invention aims to provide a high-efficiency internal combustion engine with a multi-stage auxiliary cylinder group, so as to solve the problems that fuel is wasted because fuel gas discharged by the existing internal combustion engine still carries a large amount of energy, realize nearly complete utilization of fuel gas energy, greatly improve the efficiency and power of the internal combustion engine, optimize emission quality, and have compact structure, high power density and wide application range. In order to achieve the above purpose, the present invention adopts the following technical scheme: the invention provides a high-efficiency internal combustion engine with a multistage auxiliary cylinder group, which comprises a positive cylinder group, an auxiliary cylinder group and a gas common channel, wherein the positive cylinder group comprises a plurality of positive cylinders with one end being fed or two ends being fed, fuel is combusted in the positive cylinder group, and discharged waste gas is utilized by the auxiliary cylinder group; Each stage of auxiliary cylinder group comprises n auxiliary cylinders, wherein n is greater than or equal to 1, each auxiliary cylinder is an internal combustion engine type auxiliary cylinder with a bidirectional pushing piston structure, a gas common channel is communicated with an inlet valve of each auxiliary cylinder at the same stage, and the gas common channel supplies gas for each auxiliary cylinder at the same stage. The gas public channel is provided with at least one gas inlet pipeline and at least one gas outlet pipeline, the gas inlet pipeline is communicated with the exhaust valve of the positive cylinder or the exhaust valve of each auxiliary cylinder in the auxiliary cylinder group at the upper stage, and the gas outlet pipeline is communicated with the intake valve of each auxiliary cylinder in the auxiliary cylinder group at the present stage. The gas exhausted by the positive cylinder group is all introduced into the gas public channel through the gas inlet pipeline, and then is communicated with the inlet valves of all the auxiliary cylinders in the first-stage auxiliary cylinder group through the gas outlet pipeline, and enters the auxiliary cylinders through the auxiliary cylinder inlet valves to push the pistons to do work; in the multi-stage auxiliary cylinder group, the gas exhausted by the upper-stage auxiliary cylinder group enters the lower-stage auxiliary cylinder group through the lower-stage gas public channel to do work. And the cylinder cover of the auxiliary cylinder is provided with at least one inlet valve and at least one exhaust valve, and each inlet valve is communicated with the gas public channel. The diameters of the auxiliary cylinders in the multistage auxiliary cylinder group are gradually decreased, and the overall mass of the auxiliary cylinders and the connected parts in the multistage auxiliary cylinder group is gradually decreased. The phase difference between n of the sub cylinders in the sub cylinder group is 360 DEG/n. In the air intake stroke or the power stroke, the auxiliary cylinder sprays water or volatile liquid into the auxiliary cylinder, and the water or the volatile liquid is vaporiz