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Hollow valve spring retainer

A valve spring and retainer technology, applied in the directions of machines/engines, valve devices, mechanical equipment, etc., can solve the problems of increasing the number of parts to be manufactured, increasing production costs, increasing labor and assembly time for valve spring retainers, etc.

Pending Publication Date: 2019-12-13
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an example, forming a valve spring retainer from two separate parts (eg, base and regulator cover) increases the number of parts to be manufactured, thereby increasing production costs
Additionally, by doubling the number of parts for the valve spring retainer, it increases labor and assembly time to manufacture the valve spring retainer

Method used

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  • Hollow valve spring retainer
  • Hollow valve spring retainer
  • Hollow valve spring retainer

Examples

Experimental program
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Embodiment Construction

[0017] The following description relates to a hollow valve spring retainer for a lift valve assembly. Valve spring retainers may be included in valve trains in engine systems such as figure 1 The engine system shown in. exist Figure 2A and Figure 2B The positioning of the valve spring retainer relative to the valve stem and valve spring of a lift valve, such as the intake or exhaust valve of a combustion chamber, is shown in the cross-sectional view of . lift valve at Figure 2A is shown in the closed position and in the Figure 2B is shown in the open position to show how the valve spring retainer can assist in valve movement. Additionally, positioning of the poppet assembly at a port of the combustion chamber may allow the poppet assembly to control the flow of air into the combustion chamber or exhaust gas out of the combustion chamber. Figure 3 to Figure 5 Depicts a cross-section of a hollow door spring retainer from different views and planes showing details of t...

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PUM

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Abstract

The disclosure provides a hollow valve spring retainer. Methods and systems are provided for a valve spring retainer of a valvetrain assembly. In one example, valve spring retainer may be at least partially hollowed and include inner cavities forming channels within a material of the valve spring retainer. Air inside the inner cavities may be fluidly coupled to air surrounding the valve spring retainer through channels. A mass of the valve spring retainer may be decreased and a cost and speed of fabrication of the valve spring retainer may be reduced by additive manufacturing.

Description

technical field [0001] This specification generally relates to retainers for retaining lift valve springs. Background technique [0002] A camshaft of a valve train may control the movement of a lift valve, such as an intake or exhaust valve in an engine. In addition to the valves and camshafts, the valvetrain may also include rocker arms, pushrods, and lifters that couple the valves to the camshaft and convert rotational motion of the camshaft into linear motion of the valves. Components of the valvetrain work in conjunction to control the amount of air and fuel delivered to the combustion chambers during engine operation. The lift of the intake valve allows air to enter the combustion chamber through the intake port, and when released by the cam, the intake valve can close and block the flow of air. Similarly, when the exhaust valve is lifted, exhaust gas may flow from the combustion chamber to the exhaust manifold through the outlet port. The intake and exhaust valves ...

Claims

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Application Information

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IPC IPC(8): F01L3/10
CPCF01L3/10F01L1/205F01L2301/00F01L2303/01
Inventor 约翰·康纳尔马克·马丁乔伊·福斯马克
Owner FORD GLOBAL TECH LLC