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US 10,706,999 B2Granted
Magnetorheological fluid composition and vibration damping device using same
AssigneesHonda Motor Co., Ltd., Idemitsu Kosan Co., Ltd.
InventorsKentaro Komori, Daijiro Endo, Shuichi Sakanoue, Seiichiro Yamamoto
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Abstract
This vibration damping device (10) includes a magnetorheological fluid composition in a cylinder (12). The magnetorheological fluid composition includes magnetic particles; a dispersant having the magnetic particles dispersed therein; and a friction modifier. The friction modifier is an amine-based additive having a hydrocarbon chain having 14 to 22 carbon atoms, preferably an alkyl chain or an alkenyl chain. The content of the friction modifier is 0.1 to 5 mass %.
Claims2
A magnetorheological fluid composition comprising:
- magnetic particles;
- a dispersant having the magnetic particles dispersed in the dispersant;
- and
- a friction modifier,
- wherein the friction modifier is an amine-based additive having a hydrocarbon chain having 14 to 22 carbon atoms,
- wherein the content of the friction modifier is 0.1 to 5 mass % relative to a total amount of the magnetorheological fluid composition.
3 more elements
Dependencies are inferred from the claim text.