Unlock instant, AI-driven research and patent intelligence for your innovation.

Variable Valve Timing Control

A technology of control device and valve timing, applied in valve device, valve detail, machine/engine, etc., can solve the problems of limited size reduction of valve core and difficulty in reducing device size.

Active Publication Date: 2021-07-16
AISIN SEIKI KK
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the size of the spool is limited by the number of ports for supplying and discharging fluid and the controlled amount of fluid, the size reduction of the spool is limited, and further size reduction of the device is difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Variable Valve Timing Control
  • Variable Valve Timing Control
  • Variable Valve Timing Control

Examples

Experimental program
Comparison scheme
Effect test

no. 2 example

[0093] In addition to the first embodiment described above, the present disclosure can be configured as follows. The same components as those described in the first embodiment are marked with the same reference numerals.

[0094] Such as Figure 12 As shown, the cross-sectional area of ​​the lock control flow path 35 is set to be larger than the cross-sectional areas of the lead angle flow path 33 and the retard angle flow path 34 . In the second embodiment, the diameters of the lead angle flow path 33 and the retard angle flow path 34 correspond to DM1, the diameter of the lock control flow path 35 corresponds to DM2, and the relationship is set such that DM1 is smaller than DM2.

[0095]That is, in the flow path formed in a hole shape, since the flow path resistance decreases as the cross-sectional area of ​​the flow path increases, the operating oil is quickly discharged, and the lock mechanism L is made Quick and reliable transition to locked state. When the flow path r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A variable valve timing control device (A) comprising a valve unit (Vb) comprising a valve core (55) having a plurality of platform portions (55a) on the outer periphery of the valve core (55), the valve Core A discharge flow path (55d) is formed inside the spool (55). In the case where the spool (55) is set at the unlocked position where the locked state of the lock mechanism (L) is released, the valve unit (Vb) allows the second pump port (41P2) and the lock port (41c) to communicate with each other; and In the case where the spool (55) is set at the locked position allowing the lock mechanism (L) to shift to the locked state, the valve unit (Vb) closes the second pump port ( 41P2) and allows the lock port (41c) to communicate with the discharge flow path (55d).

Description

technical field [0001] The present disclosure generally relates to variable valve timing controls. Background technique [0002] A known variable valve timing control device is disclosed in JP2016-89664A (hereinafter referred to as Patent Document 1). Patent Document 1 discloses a technology of a variable valve timing control device in which a spool is arranged coaxially with a rotating shaft, and the variable valve timing control device controls an advanced angle chamber by operating the spool. -angle chamber) and retarded-angle chamber (retarded-angle chamber) related fluid supply and discharge to control the relative rotational phase of the advanced angle chamber and the retarded angle chamber, the variable valve timing control device controls the intermediate locking mechanism. [0003] In Patent Document 1, a lock flow path and a lock discharge flow path for controlling an intermediate lock mechanism are provided. The intermediate lock mechanism is unlocked by supplyi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/344
CPCF01L1/3442F01L2001/34426F01L2001/34459F01L2001/34466F01L2001/34473F01L2250/02F01L2001/34463F01L2001/3443F01L2001/34433F01L1/356
Inventor 山川芳明小林昌树执行洋充
Owner AISIN SEIKI KK