Acceleration of the Electro-hydraulic Variable Valve Actuator for a Cam-less Engine by using a 3-port switching valve
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- TOYODA Nozomi
- 横浜国立大学大学院
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- TANAKA Hirohisa
- 横浜国立大学大学院
Bibliographic Information
- Other Title
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- 3ポート高速電磁弁によるカムレスエンジン用電子油圧可変動弁の高速化
- 3 ポート コウソク デンジベン ニ ヨル カムレス エンジンヨウ デンシ ユアツ カヘン ドウベン ノ コウソクカ
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Abstract
In recent years, two types of variable valve actuators, electromagnetic and electro-hydraulic, have been developed for cam-less engines. The issue of these actuators is how to attain reliable control of the valve landing-velocity deceleration without any electronic position sensor. With this in mind, the former type of actuator is not so resistant to gas-pressure change, while the latter has issues of power waste and limited speed for quick motion control. The authors developed a sensor-less electro-hydraulic valve actuator (EHVA), with a hydro-mechanical position feedback mechanism in 2002 by using a 2-port switching valve. It operated in 24ms for positioning 12mm in stroke. This paper presents acceleration technology for working at an engine speed of 2100rpm and total valve opening time of 19ms, by applying a 3-port switching valve to the EHVA. The parameters of the EHVA were optimized using the bond graphs simulation program, and it succeeded in completing the valve lift motion within 19ms in a full stroke.
Journal
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- TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY
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TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY 37 (4), 50-54, 2006
The Japan Fluid Power System Society
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Keywords
Details 詳細情報について
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- CRID
- 1390001205254295168
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- NII Article ID
- 10019384138
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- NII Book ID
- AA11597760
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- ISSN
- 13467719
- 13497022
- 18803121
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- NDL BIB ID
- 8036753
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed