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1. WO1996003575 - HYDRAULIC SWITCHING VALVE, AND A FREE-PISTON ENGINE PROVIDED THEREWITH

Publication Number WO/1996/003575
Publication Date 08.02.1996
International Application No. PCT/NL1995/000260
International Filing Date 26.07.1995
Chapter 2 Demand Filed 08.12.1995
IPC
F01L 25/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
25Drive, or adjustment during operation, of distribution or expansion valves by non-mechanical means
02by fluid means
04by working fluid of machine or engine, e.g. free-piston machine
06Arrangements with main and auxiliary valves, at least one of them being fluid-driven
F02B 71/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
71Free-piston engines; Engines without rotary main shaft
02Starting
F02B 71/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
71Free-piston engines; Engines without rotary main shaft
04Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
CPC
F01L 25/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
25Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
02by fluid means
04by working-fluid of machine or engine, e.g. free-piston machine
06Arrangements with main and auxiliary valves, at least one of them being fluid-driven
F02B 71/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
71Free-piston engines; Engines without rotary main shaft
02Starting
F02B 71/045
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
71Free-piston engines; Engines without rotary main shaft
04Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
045with hydrostatic transmission
Applicants
  • INNAS FREE PISTON B.V. [NL/NL]; Nikkelstraat 15 NL-4823 AE Breda, NL (AllExceptUS)
  • ACHTEN, Peter, Augustinus, Johannes [NL/NL]; NL (UsOnly)
  • POTMA, Theodorus, Gerhardus [NL/NL]; NL (UsOnly)
  • ENGEL, Maria, Pauline [NL/NL]; NL (UsOnly)
Inventors
  • ACHTEN, Peter, Augustinus, Johannes; NL
  • POTMA, Theodorus, Gerhardus; NL
  • ENGEL, Maria, Pauline; NL
Agents
  • VAN BREDA, Jacques; Octrooibureau Los en Stigter B.V. Weteringschans 96 NL-1017 XS Amsterdam, NL
Priority Data
940123227.07.1994NL
Publication Language English (EN)
Filing Language Dutch (NL)
Designated States
Title
(EN) HYDRAULIC SWITCHING VALVE, AND A FREE-PISTON ENGINE PROVIDED THEREWITH
(FR) SOUPAPE HYDRAULIQUE DE NON RETOUR ET MOTEUR A PISTON LIBRE ASSOCIE
Abstract
(EN)
An hydraulic switching valve (35) comprises, among other parts, a valve housing (45, 62) with a first connection (33, 36) and a second connection (34, 67) and a valve body (37, 63) which is movable in the valve housing (45). The switching valve (35) is open when the pressure at the first connection (33) is higher than the pressure at the second connection (34) as a result of the fact that the pressure difference caused by the movement of the valve body (37) allows a flow past the valve body (37). The switching valve is closed when the pressure at the first connection (33) is lower than the pressure at the second connection (34) as a result of the fact that the movement of the valve body (37) caused by the pressure difference closes a valve seal (40) which blocks the flow. The switching valve (35) further comprises a lock (39) with switching means (42) for selectively keeping the valve seal (40) closed, and unblocking the valve body (37), respectively.
(FR)
Une soupape hydraulique de non retour (35) comprend, parmi d'autres pièces, un logement (45, 62) de soupape pourvu d'un premier raccordement (33, 36) et d'un deuxième raccordement (34, 67), ainsi qu'un corps (37, 63) de soupape mobile à l'intérieur du logement (45). La soupape de non retour (35) est ouverte quand la pression au niveau du premier raccordement (33) est supérieure à la pression au niveau du deuxième raccordement (34), ce qui provient du fait que la différence de pression provoquée par le déplacement du corps de soupape (37) permet à l'écoulement de circuler au-delà dudit corps (37). La soupape de non retour est fermée quand la pression au niveau du premier raccordement (33) est inférieure à la pression au niveau du deuxième raccordement (34), ce qui provient du fait que le déplacement du corps de soupape (37) provoqué par la différence de pression ferme un joint (40) de soupape qui bloque l'écoulement. La soupape de non retour (35) comprend, de plus, un élément d'arrêt (39) pourvu d'un moyen de commutation (42) servant respectivement à maintenir sélectivement le joint (40) de soupape en position fermée et à débloquer le corps (37) de soupape.
Also published as
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