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Opposed piston four-stroke engine based on air valve ventilation

A four-stroke engine and opposed piston technology, which is applied to engine components, engine lubrication, machine/engine, etc., can solve problems such as short ventilation time, large pollutant discharge, uncontrollable ventilation performance of two-stroke engines, etc. , to achieve the effect of increasing fuel air utilization rate, improving thermal efficiency, and improving air quality

Inactive Publication Date: 2019-09-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most opposed-piston engines adopt a two-stroke working cycle. The air exchange process is realized by the piston sweeping the intake and exhaust ports arranged at both ends of the cylinder liner. Poor performance, high pollutant emissions

Method used

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  • Opposed piston four-stroke engine based on air valve ventilation
  • Opposed piston four-stroke engine based on air valve ventilation
  • Opposed piston four-stroke engine based on air valve ventilation

Examples

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Embodiment Construction

[0030] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] This embodiment provides a kind of opposed-piston four-stroke engine based on valve ventilation, such as figure 1 As shown, it includes a body 1 , a crank linkage mechanism 2 , an accessory driving device 3 , a gas distribution mechanism 4 , a fuel supply system 5 and a lubrication system 6 .

[0032] The main body of the body 1 is a cylindrical structure with openings at both ends, and the internal cavity is used as a cylinder. Valve mounting holes distributed along its circumference are processed, and camshaft mounting brackets are provided on both sides of the valve 19 mounting position, and the middle part of the main body of the body 1 is processed into a cylinder liner that guides the movement of the piston. The engine is air-cooled, and the middle part of the body 1 is provided with multiple rows of cooling fins. An electrically driven or me...

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Abstract

The invention discloses an opposed piston four-stroke engine based on air valve ventilation. The opposed piston four-stroke engine based on the air valve ventilation comprises a machine body, two crank and connecting rod mechanisms, a drive shaft, an air distributing mechanism, a fuel oil supply system and a lubrication system, wherein an inner cavity of the machine body is used as an air cylinder, air distributing mechanism valve installation holes distributed along the circumferential direction of the machine body are formed in the outer circumferential surface of the machine body, the air distributing mechanism is used for achieving the air valve ventilation, the two crank and connecting rod mechanisms are arranged at two ends of the machine body, the fuel oil supply system is used for supplying fuel oil into the machine body, the lubrication system is used for lubricating the crank and connecting rod mechanisms and the inner circumferential surface of the machine body, and the crank and connecting rod mechanisms transmit power to the drive shaft so as to drive the lubrication system, the air distributing mechanism and the fuel oil supply system to run respectively through a fuel pump gear, an air distributing mechanism gear and a fuel supply cam, which are arranged on the drive shaft. The opposed piston four-stroke engine based on the air valve ventilation can improve ventilation quality of an opposed piston engine, and improves heat efficiency of the opposed piston engine.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to an opposed-piston four-stroke engine based on valve ventilation. Background technique [0002] The opposed piston engine has a pair of pistons that move relatively in the cylinder. Compared with the traditional four-stroke engine, the cylinder head structure is eliminated, the volume and weight of the engine are greatly reduced, and the power density and thermal efficiency are higher. One of the important technical approaches of globalization. The reciprocating motion of the piston in the opposed piston engine makes it have better self-balancing, less vibration and less running noise. Cancellation of the cylinder head structure reduces the heat dissipation area of ​​the opposed-piston engine, reduces the heat lost to the cooling system, and has higher thermal efficiency. Compared with the engine of the same displacement, the opposed piston engine has a small...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B75/02F02B75/32F02F3/26F01M1/02F01M1/08F01L1/047F01L1/02
CPCF01L1/026F01L1/047F01M1/02F01M1/08F01M2001/083F02B75/02F02B75/32F02B2075/027F02F3/26
Inventor 李向荣康与宁陈彦林赵伟华刘福水
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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