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A Variable Valve Phase Mechanism Based on Sliding Cylinder Liner

A gas timing and sliding cylinder technology, applied in the direction of sliding valves, engine components, combustion engines, etc., can solve the problems that the two-stroke engine with opposed pistons cannot be used, and cannot meet the requirements for ventilation of the two-stroke engine with pistons, and achieves improvement. Ventilation effect, improvement of engine performance, effect of facilitating combustion

Active Publication Date: 2019-10-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this mechanism cannot meet the requirements of the piston two-stroke engine for ventilation, and cannot be used on the opposed-piston two-stroke engine

Method used

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  • A Variable Valve Phase Mechanism Based on Sliding Cylinder Liner
  • A Variable Valve Phase Mechanism Based on Sliding Cylinder Liner
  • A Variable Valve Phase Mechanism Based on Sliding Cylinder Liner

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] as attached figure 1 , 3 As shown in and 4, the present invention provides a variable valve timing mechanism based on sliding cylinder liners, which includes sliding cylinder liners 4, 5 on both sides, two electro-hydraulic drive devices 2, 8, rockers 3 on both sides , 7, and locking spring 1,9.

[0027] Air holes distributed along the circumferential direction are processed on the surfaces of the sliding cylinder sleeves 4 and 5;

[0028] Sliding cylinder liners 4,5 are sleeved on the inner side of fixed cylinder liner 6, pistons are sleeved on the inner side of sliding cylinder liners 4,5, and sliding cylinder liners 4,5 are compressed and positioned by locking springs 1,9. Rocking bar 3,7 middle part is fixed with the boss on the fixed cylinder liner 6, and one side of rocking bar 3,7 is connected with driving device 2,8, and one side is conne...

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Abstract

The invention discloses a variable gas distributing phase mechanism based on a sliding cylinder liner. The exhaust port and the intake port of the cylinder are evenly arranged in the middle and both sides of the cylinder respectively. Gas, the air exchange method of the intake air on both sides of the cylinder, meets the air exchange needs of two-stroke and four-stroke at the same time. The air inlet and exhaust port of the cylinder can also be evenly arranged in the middle and both sides of the cylinder, and the phase mechanism is installed on the cylinder to realize the air exchange mode of air intake in the middle of the cylinder and exhaust on both sides of the cylinder. The invention can ensure that the average indicated pressure and ventilation characteristics of the engine are optimized under various working conditions, and is suitable for optimizing the ventilation process at different rotation speeds, optimizing the combustion structure, and improving the performance of the engine.

Description

technical field [0001] The invention relates to a variable valve phase mechanism of an internal combustion engine, in particular to a variable valve phase mechanism of an opposed-piston two-stroke engine, and belongs to the technical field of internal combustion engines. Background technique [0002] The opposed-piston two-stroke engine cancels the complicated valve train and cylinder head, its weight can be greatly reduced, and the power density and thermal efficiency can be effectively improved. As one of the technical approaches to deal with the energy crisis and environmental pollution challenges, it has attracted attention and research . However, the problem of emissions and particulate matter has always been a key issue restricting the application of opposed-piston two-stroke engines. One of the main reasons is that in opposed-piston two-stroke engines, the intake and exhaust ports arranged at both ends of the cylinder liner The air exchange process is completed, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L5/06F01L9/00F02D13/02F01L9/10
CPCF01L5/06F01L9/00F02D13/0215F02D13/028Y02T10/12
Inventor 李向荣马赫阳杨伟
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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