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A hydraulic valve for camshaft phaser adjustment

A phaser, camshaft technology, applied in valve devices, machines/engines, non-mechanically actuated valves, etc., to solve problems such as inability to meet emissions, fuel consumption and power

Active Publication Date: 2021-11-02
JAPHL POWERTRAIN SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing side-mounted or mid-mounted hydraulic valves can only achieve one-way adjustment of the camshaft in advance or lag, which cannot meet the increasingly stringent requirements for emissions, fuel consumption, and power.

Method used

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  • A hydraulic valve for camshaft phaser adjustment

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Embodiment Construction

[0020] Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention, such as the shape, structure, mutual position and connection relationship between the various parts, the role and working principle of the various parts, etc., will be further described. Detailed instructions:

[0021] as attached figure 1 As shown, the present invention is a hydraulic valve for adjusting a camshaft phaser, including a valve body 1, a valve sleeve 7 is set in the valve body 1, a valve core 6 is movably arranged in the valve sleeve 7, and one end of the valve body 1 The hydraulic oil inlet P29 is set, and the other end of the valve body 1 is set with the hydraulic oil outlet T30. Ⅳ21, spool discharge hole Ⅰ23, hydraulic oil outlet T30 are set in a connected structure, valve body oil circuit interface L34, valve sleeve guide chamber Ⅲ17, spool ring groove Ⅳ21, spool discharge hole Ⅰ23, hydraulic oil When the o...

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PUM

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Abstract

The invention provides a hydraulic valve for adjusting a camshaft phaser applied in the technical field of engine variable valve timing. ), valve sleeve diversion cavity III (17), valve core ring groove IV (21), valve core discharge hole I (23), hydraulic oil outlet T (30) are set in a connected state, the valve body oil circuit When the interface L(34), the guide chamber of the valve sleeve III(17), the valve core ring groove IV(21), the valve core discharge hole I(23), and the hydraulic oil outlet T(30) are connected, the hydraulic oil setting In order to push the lock pin of the phaser to lock the camshaft phaser at the initial position, the hydraulic valve for adjusting the camshaft phaser according to the present invention can conveniently and reliably realize the advance and lag two-way adjustment of the phaser, and expand the valve overlap angle Adjust the range, optimize the valve overlap angle value, reduce engine fuel consumption and harmful substance emissions, and improve the overall performance of the engine.

Description

technical field [0001] The invention belongs to the technical field of engine variable valve timing, and more specifically relates to a hydraulic valve for adjusting a camshaft phaser. Background technique [0002] In the variable valve timing technology (VVT) of the automobile engine, it is necessary to use the camshaft phaser to adjust the hydraulic valve. The working principle of the hydraulic valve adjusted by the camshaft phaser is as follows: the spool of the hydraulic valve is pushed by the force of the hydraulic oil and moves axially along the valve sleeve of the hydraulic valve. The oil pressure difference between the two chambers can push the camshaft to advance or retard the rotation relative to the crankshaft, so as to realize the adjustment of the engine valve timing and optimize the engine performance index. However, the existing side-mounted or mid-mounted hydraulic valves can only achieve one-way adjustment of the camshaft in advance or lag, which cannot mee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/344F01L9/11F01L9/10F01L9/40
CPCF01L1/344F01L9/10
Inventor 李果姜倩李后良许亮丁万龙王友安甄子源
Owner JAPHL POWERTRAIN SYST
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