Oil control device of internal combustion engine whole changeable hydraulic valve system
An internal combustion engine and variable technology, applied in valve devices, non-mechanically actuated valves, mechanical equipment, etc., can solve the problems of difficult popularization and application of the system, unstable work, large pressure fluctuation, etc., and achieve simple structure, reliable operation, The effect of preventing the entry of air
Active Publication Date: 2014-04-16
SHANDONG UNIV
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Problems solved by technology
In the process of oil discharge from the hydraulic cylinder, the hydraulic low-pressure system has the problem of large pressure fluctuations, resulting in unstable work; when the internal combustion engine stops working, the hydraulic system has the problem of oil leakage, which allows air to enter; the hydraulic cylinder outlet control Due to structural defects, the device also has the limitation that it is not suitable for multi-cylinder internal combustion engines, and there is a problem of unstable transmission
These problems make the system difficult to popularize and apply
Method used
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[0025] The implementation process of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0026] Such as figure 1 , figure 2 with image 3As shown, the present invention is composed of a housing 1 and a rotary valve installed in the housing 1, a hydraulic accumulator and a transmission mechanism; the rotary valve is composed of a rotary valve core 3 and a rotary valve sleeve 2, and one end of the rotary valve sleeve 2 is provided with The gear tooth 2-1, the rotary valve core 3 is installed in the rotary valve sleeve 2, and the rotary valve sleeve 2 is installed in the inner cavity of the housing 1; There is a rack chamber in the rack chamber, and the rack 2-2 is installed in the rack chamber and meshed with the gear teeth on the rotary valve sleeve 2; the hydraulic accumulator consists of an energy storage piston 4-1, an energy storage spring 4-2, an end The cover 4-4, the sealing seat ring 4-6 and the rubber pad 4-5 are...
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The invention relates to valve mechanisms and fuel supply systems of internal combustion engines, in particular to an oil control device of an internal combustion engine whole changeable hydraulic valve system. The oil control device is connected with the internal combustion engine whole changeable hydraulic valve system and is composed of a shell body, a rotary valve, a hydraulic energy accumulator and a transmission mechanism, wherein the rotary valve, the hydraulic energy accumulator and the transmission mechanism are arranged in the shell body. The rotary valve is composed of a rotary valve element and a rotary valve sleeve. The hydraulic energy accumulator is composed of an energy accumulating piston, an energy accumulating spring, an end cover, a sealing seat ring and a rubber pad and is installed in an inner cavity at one end of the shell body. An energy accumulating cavity is arranged between the rotary valve and the hydraulic energy accumulator. The transmission mechanism is composed of a transmission gear, a gear shaft and an Oldham coupling. The transmission gear is installed on the gear shaft. The gear shaft is connected with the rotary valve element through the Oldham coupling. A high-frequency electromagnetic valve is replaced by the oil control device, so that the oil control device is used in the single-cylinder and multi-cylinder internal combustion engine whole changeable hydraulic valve systems. The oil control device of the internal combustion engine whole changeable hydraulic valve system is simple in structure, stable and reliable in work, good in machining technology and low in cost.
Description
1. Technical field [0001] The invention relates to a valve mechanism and a fuel supply system of an internal combustion engine, in particular to an oil control device for a fully variable hydraulic valve system of an internal combustion engine. 2. Background technology [0002] The internal combustion engine adopts a hydraulically driven valve system that can realize continuous variable valve maximum lift, valve opening continuous angle and valve timing. This valve system is called a fully variable hydraulic valve system (Hydraulic Fully Variable Valve System, HFVVS for short). ), which is of great significance to the energy saving and emission reduction of internal combustion engines. At present, representative fully variable hydraulic valve systems include the Uniair system of Schaeffler Company, the electro-hydraulic fully variable valve system of Ford Company in the United States, and the EHFVVT system of Lotus in the United Kingdom. These hydraulic fully variable valve...
Claims
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IPC IPC(8): F01L9/02F01L1/344F01L9/14
Inventor 谢宗法
Owner SHANDONG UNIV