- Patent Title: Systems and methods for transient control of a free-piston engine
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Application No.: US14784243Application Date: 2014-04-15
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Publication No.: US10202897B2Publication Date: 2019-02-12
- Inventor: Zongxuan Sun , Ke Li
- Applicant: Regents of the University of Minnesota
- Applicant Address: US MN Minneapolis
- Assignee: Regents of the University of Minnesota
- Current Assignee: Regents of the University of Minnesota
- Current Assignee Address: US MN Minneapolis
- Agency: Schwegman Lundberg & Woessner, P.A.
- International Application: PCT/US2014/034234 WO 20140415
- International Announcement: WO2014/172382 WO 20141023
- Main IPC: F02B71/00
- IPC: F02B71/00 ; F02D41/00 ; F02D45/00 ; F02D35/02 ; F02D41/14 ; F01B11/00

Abstract:
A free-piston (“FP”) engine is a type of internal combustion engine with no crankshaft, so that its piston trajectory is no longer constrained by the mechanical linkage. FP engines have a high potential in terms of energy saving given their simple structure, high modularity and high efficiency, among other attributes. One of the technical barriers that affect FP engine technology is a lack of precise piston trajectory control. For example, the presence of a transient period after a single combustion event can prevent the engine from continuous firing. The present subject matter provides a control scheme that can utilize a reference and control signal shifting technique to modify the tracking error and the control signal to reduce the transient period.
Public/Granted literature
- US20160032820A1 SYSTEMS AND METHODS FOR TRANSIENT CONTROL OF A FREE-PISTON ENGINE Public/Granted day:2016-02-04
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