Engines VVT phase machine oil supply duct structure

A channel structure and phaser technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problem of limiting the arrangement space of the bolt holes of the camshaft cover, affecting the design, machining, strength and installation of the camshaft cover. Problems such as increasing the diameter of the camshaft journal

Inactive Publication Date: 2008-04-09
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

But these two methods have certain defects: if two oil grooves are arranged on the cylinder head, it will limit the arrangement space of the bolt holes of the camshaft cover, which will inevitably affect the design, machining,

Method used

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  • Engines VVT phase machine oil supply duct structure
  • Engines VVT phase machine oil supply duct structure

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Embodiment Construction

[0014] Refer to Figure 1, Figure 2, Figure 3 and Figure 4, the VVT ​​phaser oil supply channel structure involves the engine's camshaft 4, cylinder head 2, camshaft cover 1 and VVT phaser 3, combined refer to Figure 2 and Figure 2A 2B, the camshaft 4 is axially provided with an oil inlet channel 41 and an oil return channel 42 that communicate with the inner and outer oil chambers of the VVT ​​phaser 3, and a ring of oil groove 43 is machined on the outer wall of the journal of the camshaft 4. The oil groove 43 communicates with the oil hole 44 of the oil inlet passage or the oil return passage of the camshaft leading to the inner and outer oil chambers of the VVT ​​phaser, and at the same time corresponds to the oil inlet 22 of the cylinder head 2 that is set in the corresponding position and leads to the OCV valve. See Figure 3. At the same time, referring to Figures 3 and 4, oil grooves 21 and 11 are respectively provided on the inner wall of the camshaft hole of the cylinder h...

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Abstract

The invention provides an engine VVT phaser oil supply passage structure. An oil trough ring is arranged on the internal wall of a shaft hole of a camshaft of a cylinder cover and a corresponding internal wall of a camshaft cover; the oil trough is communicated with an oil hole of an oil inlet passage or an oil return passage to which the camshaft leads an internal oil chamber and an external oil chamber of the VVT phaser; the oil trough of the cylinder cover is provided with an oil hole communicated with an engine oil control valve; meanwhile, the external wall of the shaft neck of the camshaft is also provided with an oil trough ring; the oil trough is communicated with the oil hole of the oil inlet passage or the oil return passage to which the camshaft leads the internal oil chamber and the external oil chamber of the VVT phaser, and is also communicated with the oil hole leading to the engine oil control valve and arranged at a corresponding position of the cylinder cover. As only one oil trough is arranged on the cylinder cover, the structure reserves sufficient space for the design and installation of the shaft cover of the camshaft; the other oil trough is arranged on the shaft diameter of the camshaft, which is beneficial for reducing the diameter of the shaft, improving the strength of the position of the camshaft and reducing the processing difficulty.

Description

Technical field [0001] The invention relates to an engine oil supply system, in particular to the arrangement of a VVT phaser oil supply system for a small displacement engine Background technique [0002] When the engine is running, the VVT ​​(Variable Valve Timing) system uses OCV (Oil control valve) to adjust the amount of oil required to enter the internal and external oil chambers of the cam phaser to change the camshaft timing For the purpose of phasing, this requires the oil supply system to include an oil inlet passage and a return oil passage to correspond to the inner and outer oil chambers of the VVT, and the two oil passages can be interchanged, that is, the oil inlet passage can be changed to the oil return passage The oil passage can be turned into an oil passage. [0003] Under normal circumstances, the VVT ​​phaser oil supply system generally arranges two oil grooves on the cylinder head or two oil grooves on the camshaft to meet the requirements of two oil passag...

Claims

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Application Information

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IPC IPC(8): F01L9/02
Inventor 苏继才谌伦武成卫国杨志勇
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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