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1. (WO2011144926) FREE-PISTON INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2011/144926    International Application No.:    PCT/GB2011/050931
Publication Date: Fri Nov 25 00:59:59 CET 2011 International Filing Date: Tue May 17 01:59:59 CEST 2011
IPC: F01B 11/00
F02B 33/06
F02B 71/00
Applicants: UNIVERSITY OF NEWCASTLE UPON TYNE
MIKALSEN, Rikard
ROSKILLY, Anthony Paul
Inventors: MIKALSEN, Rikard
ROSKILLY, Anthony Paul
Title: FREE-PISTON INTERNAL COMBUSTION ENGINE
Abstract:
A linear-acting, free-piston internal combustion engine suitable for operation on a four-stroke engine cycle comprises a power piston (11a, 11b) reciprocating in a power chamber (18a, 18b) and a compression piston (23, 23a, 23b) reciprocating in a compression chamber (29a, 29b). The power piston (11a, 11b) and the compression piston (23, 23a, 23b) are rigidly connected by means of a rod (19). The compression piston (23, 23a, 23b) performs alternately an intake stroke and a compression stroke and the power piston (11a, 11b) performs alternately a power stroke and an exhaust stroke.