Title:
IMPROVED EFFICIENCY TURBOCHARGED ENGINE SYSTEM WITH BOTTOMING CYCLE, AND METHOD OF OPERATION
Document Type and Number:
WIPO Patent Application WO/2010/039849
Kind Code:
A8
Abstract:
A turbocharged engine system (500) is configured to vaporize methanolin a heat exchanger (350) using heat from exhaust gases, and uses the vaporized methanol to drive a turbine (361) of the engine's turbocharger (316, 519,124, 126). The methanol may also be dissociated into hydrogen and carbon monoxide. After passing through turbine (316), the vapor is injected into the engine (102) by port injection. By selective timing of exhaust valves (472, 474), the exhaust gases are separated into two streams (409, 410), a first stream comprising gases ejected during exhaust blowdown, and a second stream of gases ejected during the remainder of the engine's exhaust stroke. The blowdown gases are employed to drive a separate turbine (519) of the turbocharger (316, 519, 124, 126).
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Inventors:
GRAY CHARLES L JR (US)
Application Number:
PCT/US2009/059056
Publication Date:
July 29, 2010
Filing Date:
September 30, 2009
Export Citation:
Assignee:
US GOV ENV PROTECTION AGENCY (US)
GRAY CHARLES L JR (US)
GRAY CHARLES L JR (US)
International Classes:
F01N5/02; F01K23/06; F01N3/28; F02B29/04; F02B33/34; F02B37/02; F02B37/10; F02B39/08; F02M21/06; F02M25/12; F02M31/18
Attorney, Agent or Firm:
LINFORD, Lorraine et al. (Suite 5400701 Fifth Avenu, Seattle Washington, US)
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