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Title:
FAIL-SAFE ROTARY ACTUATOR FOR A COOLANT CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2010/127825
Kind Code:
A3
Abstract:
The invention relates to a fail-safe rotary actuator (1) for a coolant circuit, particularly for a coolant circuit of an internal combustion engine (2) comprising a plurality of partial circuits (3) and (4), having a coolant delivery pump (5) for circulating the coolant within the coolant circuit, and having a rotary vane housing (8) comprising a plurality of housing pass-through openings (6) and (7), in which at least one rotary vane (9) having at least one rotary vane pass-through opening (11) and (12) is rotationally supported, wherein the housing pass-through openings (6) and/or (7) are fluidically connected to at least one partial circuit (3) and/or (4), and can be brought into at least partial interference with the rotary vane pass-through openings (11) and/or (12) by a rotary motion of the rotary vane (9), wherein a thermostat valve (13) opens a flow path running parallel to the rotary vane (9) from one of the partial circuits (3) or (4) to the coolant delivery pump (5) when a temperature limit of the coolant is exceeded.

Inventors:
TRIEBE STEFFEN (DE)
STAIGER MICHAEL (DE)
HELLING LARS (DE)
LACHNER DIETER (DE)
Application Number:
PCT/EP2010/002715
Publication Date:
January 06, 2011
Filing Date:
May 04, 2010
Export Citation:
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Assignee:
AUDI AG (DE)
TRIEBE STEFFEN (DE)
STAIGER MICHAEL (DE)
HELLING LARS (DE)
LACHNER DIETER (DE)
International Classes:
F01P7/16; F04D15/00
Domestic Patent References:
WO2003042517A12003-05-22
Foreign References:
DE19921421A12000-11-09
US20050106040A12005-05-19
DE19816522A11999-10-28
Attorney, Agent or Firm:
AUDI AG (Thomas, Ingolstadt, DE)
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