(11)	WO 01/65100	(13)	A2
(21)	PCT/US01/06733
(22)	01 March 2001 (01.03.2001)
(25)	ENG	(26)	ENG
(31)	09/517,808	(32)	02 March 2000 (02.03.2000)	US
(43)	07 September 2001 (07.09.2001)
(51)7	F02G 3/02, 1/04, 1/043, 1/05, F24D 15/04
(54)	AUXILIARY POWER UNIT
(71)	NEW POWER CONCEPTS LLC 340 Commercial Street, Manchester, NH 03101; (US). [US/US].
(72)	KAMEN, Dean, L. 15 Westwind Drive, Bedford, NH 03110; (US). LANGENFELD, Christopher, C. LANGENFELD, Christopher, C.; (US). NORRIS, Michael NORRIS, Michael; (US). SACHS, Jason, Michael SACHS, Jason, Michael; (US).
(74)	TIBBETTS, Jean, M. Bromberg & Sunstein LLP, 125 Summer Street, Boston, MA 02110; (US).
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ARIPO patent (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW), Eurasian patent (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), European patent (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR), OAPI patent (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
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Published	without international search report and to be republished upon receipt of that report
Abstract An auxiliary power system (100) for providing electrical power and heat to an indoor area includes an external combustion engine (101), such as a Stirling cycle engine (101), for generating mechanical energy and thermal energy. The external combustion engine burns a fuel with substantially complete combustion such that exhaust emissions from the external combustion engine are below a predetermined exhaust level. A generator (102) is coupled to the external combustion engine (101) and converts the mechanical energy produced by the external combustion engine (101) to electrical power. A first power output is used to provide the electrical power produced by the generator (102). The external combustion engine (101) and generator are disposed within a housing such that the external combustion engine (101), generator (102) and housing combination is a portable size. The thermal energy generated by the external combustion engine (101) may be used to heat the atmosphere surrounding the housing.