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

Valve timing control device

A technology of valve timing and controller, applied in machine/engine, valve details, engine components, etc., can solve problems such as larger position deviation and shorter sealing size

Active Publication Date: 2015-06-17
DENSO CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the seal dimension between the radially inner wall of the boot and the hub becomes shorter
[0005] Moreover, if the first and second protrusions are press-fittedly fixed into two holes respectively defined in the rear plate, since two press-fits are necessary for the first and second protrusions, the result of manufacturing tolerances The positional deviation may become larger

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
  • Valve timing control device
  • Valve timing control device
  • Valve timing control device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] refer to Figure 1 to Figure 4 The first embodiment is described. The valve timing controller 1 of this embodiment is used as Figure 4 A powertrain with an internal combustion engine 10 is shown. In the power transmission system, a gear 12 is fixed to a crankshaft 11 corresponding to a drive shaft of the engine 10 . The gear 15 is fixed to the camshaft 13 corresponding to the driven shaft and the gear 16 is fixed to the camshaft 14 corresponding to the driven shaft. Chain 17 engages gears 12 , 15 and 16 and transmits torque from crankshaft 11 to camshafts 13 and 14 . Camshaft 13 drives exhaust valves 18 and camshaft 14 drives intake valves 19 . The gear 16 is connected to a chain 17 , and a vane rotor described below is connected to the camshaft 14 . The valve timing controller 1 controls the opening and closing timing of the intake valve 19 by rotating the crankshaft 11 and the camshaft 14 with a predetermined phase difference set between the crankshaft 11 and th...

no. 2 example

[0053] refer to Figure 5 A second embodiment is described. In the second embodiment, the radially inner wall 46 of the groove portion 40 is positioned on the inner side in the radial direction than the inner periphery of the rear hole 28 of the rear plate 22 . Thus, the groove portion 40 communicates with the outside air through the gap between the rear hole 28 of the rear plate 22 and the cam shaft 14 .

[0054] When oil undesirably flows inside the groove portion 40 , the oil is discharged from the valve timing controller 1 through the gap. Since the resistance of the oil acting on the protrusion 50 can be eliminated, the valve timing controller 1 can improve responsiveness to phase control.

no. 3 example

[0056] refer to Figure 6 A third embodiment is described. In the third embodiment, the hub portion 31 of the vane rotor 30 has the first groove portion 41 and the second groove portion 42 . The rear plate 22 has a first protrusion 51 provided in the first groove portion 41 and a second protrusion 52 provided in the second groove portion 42 .

[0057] Such as Figure 6 As shown, when the protrusion 51 contacts the inner wall of the first groove portion 41 on the advancing side in the rotational direction, the second protrusion 52 contacts the inner wall of the second groove portion 42 on the advancing side in the rotational direction. Although not shown, when the first protrusion 51 contacts the inner wall of the first groove portion 41 on the retarding side in the rotational direction, the second protrusion 52 contacts the second groove portion 42 on the retarding side in the rotational direction the inner wall.

[0058] According to the third embodiment, when the valve t...

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 vane rotor (30) rotates relative to a housing (20) according to an oil pressure in a front displacement chamber (60 to 63) and a rear displacement chamber (64 to 67). A groove portion (40 to 43) is defined in one of the housing and a hub part (31) of the vane rotor and extends in a rotational direction. A projection part (50 to 53) projecting from the other of the housing and the hub portion of the blade is inserted in the groove portion and is engaged with an inner wall of the groove portion in the direction of rotation in contact, so a range of a relative rotation between the housing and define the vane rotor.

Description

technical field [0001] The present invention relates to a valve timing controller for controlling the opening and closing timing of an intake valve or an exhaust valve of an internal combustion engine. Background technique [0002] The valve timing controller controls the opening and closing timing of intake or exhaust valves by changing the relative rotational phase between the crankshaft and camshaft of the engine. The valve timing controller has a housing rotating together with the crankshaft and a vane rotor arranged inside the housing. The vane rotor is fixed to the camshaft and is rotatable relative to the housing. [0003] JP 2013-19356A describes a valve timing controller in which a first protrusion is fixed to a rear plate of a housing and protrudes into an advance chamber defined inside the housing, and a second protrusion is fixed to the rear plate and protrudes into the delay chamber inside the housing. When the protruding portion protruding to the advance cha...

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 Applications(China)
IPC IPC(8): F01L1/34
CPCF01L1/34F01L1/3442F01L2001/0537F01L2001/34469F01L2001/34479F01L2250/02F01L2303/00F01L2303/02F01L2800/09
Inventor 松永祐树
Owner DENSO CORP