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Internal combustion engine comprising a valve train with valve springs and method for mounting such a valve spring

A technology for an internal combustion engine and a valve train, applied in the field of cylinder valves, can solve the problems of increasing the weight of the valve spring, the poppet valve and/or the valve train, increasing the cost of the engine and the assembly time, reducing the response ability of the poppet valve, etc.

Active Publication Date: 2018-10-23
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As one example, fasteners or valve spring retainers such as those disclosed by the '881 patent can add weight to the valve springs, poppet valves, and / or valvetrain, which can lead to reduced responsiveness of the poppet valves.
Further, such fasteners or valve spring retainers can increase the cost and / or assembly time of the engine

Method used

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  • Internal combustion engine comprising a valve train with valve springs and method for mounting such a valve spring
  • Internal combustion engine comprising a valve train with valve springs and method for mounting such a valve spring
  • Internal combustion engine comprising a valve train with valve springs and method for mounting such a valve spring

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Embodiment Construction

[0018] The following description relates to systems and methods for cylinder valves of internal combustion engines. engine such as figure 1 The illustrated engine includes a plurality of cylinders or combustion chambers configured to receive intake and exhaust combustion gases via a plurality of poppet valves. Each poppet is coupled to a corresponding valve spring having multiple windings, such as figure 2 The valve springs shown. The valve spring includes an end with a final winding shaped to align with the stem of the poppet such as image 3 Valve stem coupling shown. The end of the valve spring is coupled to the valve stem in the installed state, e.g. Figure 4 shown. The end of the valve spring consists of a final winding with opposing legs, such as Figure 5 shown, and the valve stem includes an annular groove such as Figure 6 shown. In the installed state, the opposite legs of the valve spring are coupled around the groove of the valve stem in order to maintain...

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Abstract

The invention relates to an internal combustion engine comprising a valve train with valve springs and a method for mounting such a valve spring. Methods and systems are provided for cylinder valves of an internal combustion engine. In one example, a valve assembly may include a poppet valve and a valve spring. The valve spring includes a plurality of legs adapted to engage with an annular grooveof the valve spring in order to couple the valve spring to the poppet valve.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from German Patent Application No. 102017206151.0 filed on April 11, 2017. The entire contents of the applications cited above are hereby incorporated by reference in their entirety for all purposes. technical field [0003] The present invention generally relates to methods and systems for cylinder valves of internal combustion engines. Background technique [0004] In four-stroke internal combustion engines, to control charge changes, poppet valves are used. The poppet valve is movable along its longitudinal axis between a valve closed position and a valve open position. During operation of the internal combustion engine, the poppet valve performs an oscillating stroke movement in order to open or close the inlet and outlet openings of the engine cylinders. [0005] The actuating device for the poppet valve is commonly referred to as the valve train. The valve train may oscillate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L3/10
CPCF01L3/10F01L1/462F01L1/047F01L3/08
Inventor R·福瑞德费尔德P·波尔肯哈根U·海特尔
Owner FORD GLOBAL TECH LLC