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Double VVT (Variable Valve Timing) engine lubricating oil passage

A lubricating oil circuit and engine technology, which is applied in the lubrication of valve accessories, closed-circuit lubrication system, and control of lubricant pressure, etc., can solve the problems of slow speed, long oil circuit, and long time, and achieve rapid response, Guaranteed response speed

Active Publication Date: 2013-04-03
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for a dual VVT engine, if the above structures are simply superimposed, the pressure loss of the system will increase. When the camshaft phase needs to be adjusted, the time for VVT to adjust the camshaft phase will be longer and the speed will be slower, resulting in VVT. The response becomes poor, which limits the performance of the VVT ​​system. The reason is that after the single VVT ​​engine lubricating oil circuit is simply superimposed to form a double VVT ​​oil circuit, the oil circuit is too long, and the direction of the oil circuit has multiple vertical changes, etc., so it is not applicable For dual VVT engines

Method used

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  • Double VVT (Variable Valve Timing) engine lubricating oil passage

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Embodiment Construction

[0029] The double VVT ​​engine has two phasers: the intake valve timing phaser 100 and the exhaust valve timing phaser 200. The engine lubricating oil circuit not only provides oil for the operation of the phaser, but also provides oil for the intake camshaft and exhaust valve. Lubricating oil is provided at each journal of the camshaft. For the sake of clarity, in the accompanying drawings, solid parts such as the cylinder block and cylinder head of the cylinder, the intake camshaft and exhaust camshaft, and the bearing cap of the camshaft are not shown, and only the oil passages therein are reserved.

[0030] combine figure 1 , image 3 . A first main oil passage 11 and a second main oil passage 12 are arranged on the cylinder head (not shown), and the two main oil passages communicate with the cylinder body (not shown), and oil is fed from the cylinder body respectively. The first main oil passage 11 communicates with the first oil pressure control oil passage 15 , and a...

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Abstract

The invention provides a double VVT (Variable Valve Timing) engine lubricating oil passage. Oil is supplied to two phasers through two main oil passages; one-way valves are mounted between an oil pressure control valve and the main oil passages; and an oil draining passage is formed in an oil pressure control oil passage towards a chain wheel chamber. Therefore, VVT response becomes faster.

Description

technical field [0001] The invention relates to the field of automobile engines, in particular to a double VVT ​​engine lubricating oil circuit. Background technique [0002] With the development of the automobile industry, the requirements for engine performance, fuel consumption and emissions are getting higher and higher. Variable valve timing (VVT, Variable Valve Timing) technology has also been widely used in engines. The lubricating oil path becomes more complicated. Therefore, how to make the lubricating oil circuit simpler, the structure more compact, and the lubricating effect better are difficult problems that need to be broken through. [0003] Chinese patent 200710195892.5 discloses a lubricating oil passage for a single VVT ​​engine. The cylinder head is provided with a main oil passage connected to the cylinder block, which is the bolt hole of the cylinder head; the cylinder head is also provided with the first auxiliary oil passage of the cylinder head. The ...

Claims

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Application Information

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IPC IPC(8): F01M9/10F01M1/12F01M1/16
Inventor 王英杰杨林强姚巍欧阳彩云陈亮张应兵罗俊李欢
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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