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Deep expansion internal combustion engine

A technology for an internal combustion engine and an expander, which is applied in the field of deep expansion internal combustion engines and can solve problems such as incomplete expansion and affecting engine efficiency.

Inactive Publication Date: 2015-07-22
ZEROQ SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This property inevitably results in a much higher in-cylinder pressure at the end of the expansion than at the beginning of the compression stroke. This condition essentially results in incomplete expansion, which seriously affects the efficiency of this type of engine.

Method used

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  • Deep expansion internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A deep expansion internal combustion engine such as figure 1 As shown, it includes a cylinder-piston mechanism 1 and a variable volume type expansion mechanism 2. A combustion chamber is arranged in the cylinder of the cylinder-piston mechanism 1, and the cylinder-piston mechanism 1 follows the intake stroke-compression stroke-explosion power stroke-exhaust Stroke works in four-stroke mode, the exhaust port of the cylinder-piston mechanism 1 communicates with the working fluid inlet of the variable volume expansion mechanism 2 .

Embodiment 2

[0055] A deep expansion internal combustion engine such as figure 2 As shown, it includes a cylinder-piston mechanism 1 and a variable volume type expansion mechanism 2. The cylinder of the cylinder-piston mechanism 1 is provided with a combustion chamber. Working, the exhaust port of the cylinder-piston mechanism 1 communicates with the working fluid inlet of the variable volume expansion mechanism 2 .

[0056] As a convertible implementation mode, in Embodiment 1 and Embodiment 2, the power shaft of the variable volume expansion mechanism 2 and the power shaft of the cylinder-piston mechanism 1 can be arranged coaxially or in linkage, selectively, Or further selectively, the variable volume expansion mechanism 2 is set in linkage with the cylinder-piston mechanism 1 via a speed change mechanism.

Embodiment 3

[0058] A deep expansion internal combustion engine such as image 3 As shown, the difference from Embodiment 1 is that the deep expansion internal combustion engine further includes a volumetric compression mechanism 3 , and the air inlet of the cylinder-piston mechanism 1 communicates with the working medium outlet of the volumetric compression mechanism 3 .

[0059] As a changeable implementation, both Embodiment 1 and Example 2 and their changeable implementations can further make the deep expansion internal combustion engine further include a volumetric compression mechanism 3, and make the air inlet of the cylinder-piston mechanism 1 It communicates with the working medium outlet of the positive displacement compression mechanism 3 .

[0060] As a transformable implementation manner, both embodiment 3 and its transformable implementation manners can selectively set the variable volume expansion mechanism 2 and the volume compression mechanism 3 coaxially or in linkage.

...

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Abstract

The invention discloses a deep expansion internal combustion engine. The deep expansion internal combustion engine comprises an air cylinder piston mechanism and a volume type expansion mechanism. A combustion chamber is arranged in an air cylinder of the air cylinder piston mechanism. The air cylinder piston mechanism works in the four-stroke mode of a suction stroke, a compression stroke, an explosion acting stroke and an exhaust stroke or work in the two-stroke mode of an air inlet scavenging compression stroke and an explosion acting stroke. An exhaust port of the air cylinder piston mechanism is communicated with a working medium inlet of the boundary changing volume type expansion mechanism. The deep expansion internal combustion engine has the advantages of being simple in structure and high in efficiency.

Description

technical field [0001] The invention relates to the field of thermal energy and power, in particular to a deep expansion internal combustion engine. Background technique [0002] Cylinder-piston mechanism internal combustion engines, such as reciprocating piston gasoline engines, diesel engines and rotary piston gasoline engines, diesel engines, etc., all have the same basic property of the volume change in the compression process and the volume change in the combustion explosion stroke (ie expansion process). This property inevitably results in a much higher in-cylinder pressure at the end of the expansion than at the beginning of the compression stroke, a condition that essentially results in incomplete expansion and seriously affects the efficiency of this type of engine. Therefore, if an engine can be invented so that the maximum volume of the expansion process is greater than the volume at the beginning of the compression process, the efficiency of this type of engine c...

Claims

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Application Information

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IPC IPC(8): F02B41/02
CPCY02T10/12
Inventor 靳北彪
Owner ZEROQ SCI & TECH
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