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High and low temperature combined cycle engine

A combined cycle, high and low temperature technology, used in combined engines, engine components, combustion engines, etc., can solve problems such as inability to stop, pollution of the environment by exhaust gas, and low efficiency

Active Publication Date: 2021-07-06
施爱龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide high and low temperature combined cycle engine, to solve the need for additional starting equipment proposed in the above-mentioned background technology, can not stop during operation, otherwise will restart; efficiency is low and a large amount of waste gas pollutes the environment after fuel combustion The problem

Method used

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  • High and low temperature combined cycle engine

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Experimental program
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Embodiment 1

[0032] Embodiment one, see appendix figure 1 , LNG is stored in the fuel tank 1, and liquid oxygen is stored in the oxidizer tank 2. When the engine is working, the first cryopump 3 and the second cryopump 4 are started, and LNG and liquid oxygen are pumped into the first heat exchanger 5 to exchange heat with carbon dioxide gas, where the carbon dioxide gas is condensed into liquid and stored in liquid carbon dioxide Inside tank 7. LNG and liquid oxygen continue to enter the second heat exchanger 8, exchange heat with the air, absorb the heat in the air, cool the air, and at the same time become gaseous natural gas and gaseous oxygen or gas-liquid mixture, enter the third heat exchange Device 9. In the third heat exchanger 9, the natural gas, oxygen and the high-temperature exhaust gas discharged from the second exhaust port 16 perform heat exchange, the temperature of the high-temperature gas decreases, and part of the condensed water is discharged, and the remaining carbo...

Embodiment 2

[0034] Embodiment two, such as figure 1 The invention shown here can be disassembled into figure 2 and image 3 two parts. figure 2 It consists of half a Rankine cycle and a half Otto cycle. image 3 is a complete Rankine cycle. image 3 The loop can recurse multiple times. figure 2 , image 3 They can be combined into one system, or they can form separate systems.

[0035] image 3 The Rankine cycle uses carbon dioxide as the working medium because carbon dioxide has a moderate boiling point, is easy to obtain, and is safe. The condensing agent can use liquid oxygen, LNG, liquid nitrogen and other gases with lower boiling points.

[0036] Combining Embodiment 1 and Embodiment 2, the present invention uses pure oxygen for combustion, which not only improves the combustion temperature and combustion speed, but also improves the combustion efficiency, that is, the efficiency of the engine is improved. At the same time, it reduces the emission of harmful gases such as...

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Abstract

The invention discloses a high and low temperature combined cycle engine, comprising a fuel tank, an oxidant tank, a first heat exchanger, a liquid carbon dioxide tank, a second heat exchanger, a third heat exchanger, a first cylinder and a second cylinder, the first A first piston is installed inside a cylinder, a second piston and a spark plug are installed inside the second cylinder, an air inlet is fixedly connected to the top of the first cylinder, and a second piston is fixedly connected to the top of the second cylinder. Two air inlets, the output ends of the fuel tank and the oxidizer tank are respectively connected with the second cryopump and the first cryopump. The high-low temperature combined cycle engine uses liquid oxygen instead of air as the oxidant, the combustion component is single, the combustion is more complete, zero emissions can be achieved, and it can work in an air-free environment, and the combustion generates higher pressure and temperature, which improves the engine efficiency. At the same time, it reduces the emission of harmful gases such as nitrogen oxides and carbon monoxide.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to high and low temperature combined cycle engines. Background technique [0002] As an emerging energy source, LNG is mainly composed of methane. LNG is colorless, odorless, non-toxic and non-corrosive. Its volume is about 1 / 650 of the same volume of gaseous natural gas. The weight of LNG is only about 45% of the same volume of water. LNG is carried on the car as fuel The weight is also light, so it has been used in many automobile engines, but there is no engine specifically for LNG, and a four-stroke engine is used, using air as the oxidizer. Since most of the nitrogen is contained in the air, a large amount of heat will be taken away during combustion, and harmful gases such as nitrogen oxides and carbon monoxide will be generated. Moreover, the energy contained in the high-pressure gas generated after LNG gasification is not utilized and wasted in vain, and the four-stroke en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01B21/02F01B29/10F01B31/08F02B43/10F02B23/08F02G5/02F01K27/00F01K25/10
CPCF01B21/02F01B29/10F01B31/08F01K25/103F01K27/00F02B23/08F02B43/10F02B2043/103F02G5/02Y02T10/12Y02T10/30
Inventor 施爱龙
Owner 施爱龙
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