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A variable camshaft phase adjuster for an engine

A phase adjuster, camshaft technology, applied in engine components, machines/engines, transmissions, etc., can solve the problems of complex system, high cost, low driving speed, etc.

Active Publication Date: 2020-12-08
山东博通塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of complex and high-cost driving motor system of the existing electronic camshaft phaser, and to provide a variable camshaft phaser for engines, the driving mechanism of which can utilize the power of the sprocket and the braking force of the casing To adjust the speed, the required driving speed is low, and the driving structure is simple

Method used

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  • A variable camshaft phase adjuster for an engine
  • A variable camshaft phase adjuster for an engine
  • A variable camshaft phase adjuster for an engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Preferred embodiment 1, such as figure 1 As shown, an engine variable camshaft phase adjuster 1 (hereinafter referred to as "phaser") is equipped in the engine for dynamically adjusting the engine camshaft relative to the rotation angle of the engine crankshaft so that the intake valve and The opening and closing of the exhaust valve is advanced or delayed. When the engine is running, the time integral of the rotational speed difference between the cam docking base 9 and the sprocket 6 in the phaser is the angle that the cam docking base 9 rotates relative to the sprocket 6, that is, the angle at which the valve advances or lags, which is called "Phase difference".

[0049] The planetary gear train, the main transmission part of the phaser, is composed of two simple planetary rows and one 3Z(II) planetary gear transmission 4, and the 3Z(II) planetary gear transmission is the first among the 3Z(II) planetary gear transmissions. The internal gear 41 is connected to the ...

Embodiment 2

[0081] Example 2, such as figure 2 As shown, an engine variable camshaft phase adjuster 1, its main transmission component planetary gear train is composed of 2 simple planetary rows and 1 Z-X-V type planetary transmission 5. The two simple planetary rows are the first planetary row 2 and the second planetary row 3, called the drive group; the first planetary row 2 is composed of the first planetary row internal gear 21, the first planetary row rotating arm 22, the first planetary row center Wheel 23 and planetary gear form, and the second planetary row 3 is made up of second planetary row internal gear 31, second planetary row rotating arm 32, second planetary row center wheel 33 and planetary wheel.

[0082] The Z-X-V type planetary transmission internal gear 11 is connected to the sprocket 6, and the Z-X-V type planetary transmission output shaft 44 is connected to the cam docking base 9; the Z-X-V type planetary transmission internal gear 11 and the Z-X-V type planetary t...

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Abstract

The invention discloses a variable camshaft phase adjuster of an engine. The variable camshaft phase adjuster is structurally characterized by comprising a chain wheel, a cam butt joint base, a driving mechanism and a planetary gear train, wherein the planetary gear train is formed by combining at least two simple planetary rows and a speed reducing planetary row, the speed reducing planetary rowis composed of basic components and a planet wheel, the number of the basic components is three or more than three, the two basic components are respectively connected with the chain wheel and the cambutt joint base, a rotary driving input is received from an engine crankshaft through the chain wheel, and the cam butt joint base drives the cam shaft to rotate; and two basic components in the speed reducing planetary row are guided outwards and are respectively connected with a first planetary row center wheel and a second planetary row center wheel. The variable camshaft phase adjuster has the advantages that an electromagnetic clutch is used for driving a phase device to work by means of the driving force of the chain wheel and the holding force of a machine shell, and has the characteristics of self-driving; and the driving mechanism and a matched driving circuit are simple, the energy consumption is low, and the phase-shifting response is fast.

Description

technical field [0001] The invention relates to an engine variable valve timing technology, in particular to an engine variable camshaft phase adjuster (VCT). Background technique [0002] The principle of engine variable valve timing technology (VVT, Variable Valve Timing) is to adjust the opening and closing time and angle of the intake valve (exhaust valve) according to the operating conditions of the engine. The VVT ​​system can improve engine fuel economy, reduce harmful exhaust gas production and improve engine power performance. The hydraulic phaser is the most widely used engine variable valve timing technology at this stage. It is mature and cheap, but the system responds slowly, especially when the engine speed is low and the oil temperature is low, the performance is not good. The motor-driven electronic phaser that is being developed at this stage is superior in performance but high in cost. Among them, patent publication numbers CN104806317A and CN104863657A a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/344F01L1/46F16H37/02
CPCF01L1/344F01L1/46F16H37/02
Inventor 夏金法
Owner 山东博通塑胶有限公司