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Multifunctional modularization variable valve driving system for four-cylinder internal combustion engine

A drive system and internal combustion engine technology, applied in the direction of machines/engines, non-mechanically actuated valves, mechanical equipment, etc., can solve the problems of complex structure of cycle selector, increase of system cost and difficulty of layout, and large number of external oil pipes

Inactive Publication Date: 2014-04-16
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the system still has the following two problems to be solved: 1) The structure of the cycle selector is complicated, and the number of external oil pipes is large, which reduces the manufacturability of the system and increases the cost and layout difficulty of the system; 2) The functions of the various components of the system Interdependence, for different application requirements, it is necessary to change multiple components and the overall layout of the system, which limits the scope of application of the system

Method used

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  • Multifunctional modularization variable valve driving system for four-cylinder internal combustion engine
  • Multifunctional modularization variable valve driving system for four-cylinder internal combustion engine
  • Multifunctional modularization variable valve driving system for four-cylinder internal combustion engine

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Embodiment Construction

[0085] figure 1 A schematic diagram of a modular multifunctional variable valve drive system is shown. The system mainly includes a valve drive module 1, a first oil supply module 6, a second oil supply module 5, an oil delivery module 7, an oil tank 8, an oil drain valve 9 and oil pipes; it also includes a stage limiting module 2 and a mode selection module 22 , the first control module 3, the second control module 4; the first oil supply module 6 and the second oil supply module 5 are cam-plunger type oil supply modules with a phase difference of 180 degrees of camshaft rotation angle, and the rotation period is Twice the ignition interval angle of the internal combustion engine, that is, 360 degrees of crankshaft angle; the first control module 3 is provided with the first oil supply port 3a of the first control module, the oil drain port 3b of the first control module, and the first drive port 3c of the first control module and the oil delivery port 3d of the first contro...

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Abstract

The invention discloses a multifunctional modularization variable valve driving system for a four-cylinder internal combustion engine, and belongs to the field of internal combustion engine variable valve driving systems. The multifunctional modularization variable valve driving system mainly comprises oil supply modules, a stage limiting module, a mode selection module, a control module, an oil conveying module, a valve driving module and the like. According to the multifunctional modularization variable valve driving system, the purpose that the valve closing process is not limited by running stages of the oil supply modules is achieved through the designed stage limiting module with the simple structure, the continuous variable valve event can be achieved only through the two oil supply modules and two two-position two-way valves, the full variable valve event can be achieved only through the two oil supply modules, two two-position three-way valves and a two-position two-way valve, and the cost is greatly reduced; the flexible conversion of a driving mode and a braking mode of the internal combustion engine is achieved through the mode selection module, the components of the system are independent in function, the modules are selected according to the requirement for the air distribution mode, the valve operation flexible degree, the existence of the braking mode and the like, the other modules do not need to be changed, the adaptability of the system is good, and the application range is wide.

Description

technical field [0001] The invention relates to a modular multifunctional variable valve drive system for a 4-cylinder internal combustion engine, which belongs to the drive system capable of realizing variable valves of the internal combustion engine. Background technique [0002] With the rapid development of the world economy, energy and environment issues have become important issues affecting sustainable economic development. As the most widely used power machinery in the world, the internal combustion engine consumes a large amount of fuel every year and emits a large amount of harmful gases and particles. The work of energy saving and emission reduction of internal combustion engines is urgent. Because of its potential to improve the performance of internal combustion engines, variable valve technology has attracted extensive attention from internal combustion engine research institutions and enterprises at home and abroad. In addition, with the sharp increase in the...

Claims

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Application Information

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IPC IPC(8): F01L9/02F01L9/14
CPCF01L13/065F01L2820/033F01L2820/034F01L2820/03F01L9/14
Inventor 崔靖晨隆武强田江平田华杨添淏王丹婷
Owner DALIAN UNIV OF TECH
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