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Hydraulic valve arrangement for controllably operating a gas exchange valve of an internal combustion piston engine

A piston engine, gas exchange valve technology, applied in valve devices, engine components, machines/engines, etc.

Active Publication Date: 2016-06-22
WARTSILA FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the rather high flow rate of hydraulic fluid, the challenge of hydraulic gas exchange valve actuation is energy efficiency

Method used

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  • Hydraulic valve arrangement for controllably operating a gas exchange valve of an internal combustion piston engine
  • Hydraulic valve arrangement for controllably operating a gas exchange valve of an internal combustion piston engine
  • Hydraulic valve arrangement for controllably operating a gas exchange valve of an internal combustion piston engine

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] exist figure 1 A hydraulic valve arrangement 10 for an internal combustion piston engine according to an embodiment of the invention is schematically shown in .

[0019] By means of this hydraulic valve arrangement it is possible to control the operation of the valve in a very flexible manner, apart from its cycle period relative to the piston and the timing of opening and / or closing ramps. The device comprises a body part 12 in which a workspace 14 is arranged. The device also comprises an operating piston 16 which is arranged in the working space. The actuating piston is force-transmittingly connected to the gas exchange valve 18 of the engine. The operating valve 16 is arranged to be movable in the workspace 14 such that it can move in a first direction causing an opening movement of the gas exchange valve 18 and can correspondingly move in a second direction opposite to the first direction causing gas Closing movement of the exchange valve 18. The workspace 14 i...

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PUM

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Abstract

The invention relates to a hydraulic valve arrangement (10) for controllably operating a gas exchange valve of an internal combustion piston engine, the arrangement comprising a body part (12) in which a first fluid chamber (14.1) is arranged bounded by radial surfaces (16.1', 16.2') of the first and second piston parts, and the volume of the first fluid chamber responds to the volume of the piston parts (16.1, 16.2) relative to the body part at the second movement in one direction and a second fluid chamber (14.2) is arranged to be bounded by a radial surface (16.2") of said second piston part and the volume of this second fluid chamber responds to said Movement of the second piston part relative to the body part in the first direction decreases. The first piston part and the second piston part are arranged to slide relative to each other, and the second piston part (16.2) is relatively Movement of said body portion (12) is arranged to be controllable by a fluid control system (24) arranged in connection with said hydraulic valve arrangement (10).

Description

technical field [0001] The invention relates to a hydraulic valve device for controllably operating a gas exchange valve of an internal combustion piston engine, the device comprising a body part having a working space for arranging an operating piston comprising at least a concentric second a piston part and a second piston part, and in the body part, a first fluid chamber is arranged to be bounded by radial surfaces of both the first piston part and the second piston part, and the volume of the first fluid chamber is responsive to Movement of the piston parts in a first direction relative to the body part increases, and a second fluid chamber is arranged to be bounded by radial surfaces of the second piston parts, and the volume of the second fluid chamber responds to the second Movement of the piston portion relative to the body portion in the first direction decreases. Background technique [0002] Internal combustion engines typically include multiple gas exchange valv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L9/02F01L9/10
CPCF01L9/10
Inventor H·妮娜斯I·霍蒂
Owner WARTSILA FINLAND OY