Invention Grant
- Patent Title: Temperature dependent variable flow orifice
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Application No.: US13527922Application Date: 2012-06-20
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Publication No.: US09618132B2Publication Date: 2017-04-11
- Inventor: Zhe Xie , Vijay A. Neelakantan , Robert L. Moses , John E. Marano
- Applicant: Zhe Xie , Vijay A. Neelakantan , Robert L. Moses , John E. Marano
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Main IPC: G05D23/12
- IPC: G05D23/12 ; G05D23/02 ; F16K17/00 ; F16K31/00 ; F16H61/00 ; F16H61/02
Abstract:
A variable flow orifice for a hydraulic control system in a transmission includes a shape memory alloy that selectively increases and decreases the size of an orifice. The deformation of the shape memory alloy, and therefore the size of the orifice, is a function of the temperature of the transmission. During cold conditions the orifice size is increased and during normal operating conditions the size of the orifice is decreased.
Public/Granted literature
- US20130015254A1 TEMPERATURE DEPENDENT VARIABLE FLOW ORIFICE Public/Granted day:2013-01-17
Information query
