Improved efficiency turbocharged engine system with...

F - Mech Eng,Light,Heat,Weapons – 01 – N

Patent

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F01N 5/02 (2006.01) F01K 23/06 (2006.01) F01N 3/28 (2006.01) F02B 29/04 (2006.01) F02B 33/34 (2006.01) F02B 37/02 (2006.01) F02B 37/10 (2006.01) F02B 39/08 (2006.01) F02M 21/06 (2006.01) F02M 25/12 (2006.01) F02M 31/18 (2006.01)

Patent

CA 2736702

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).

Un système de moteur à turbocompresseur (102) est conçu pour vaporiser du méthanol dans un échangeur thermique (350) au moyen de la chaleur provenant de gaz d'échappement et le système utilise le méthanol vaporisé pour entraîner une turbine (361) du turbocompresseur (316, 519,124, 126) du moteur. Le méthanol peut également être dissocié en hydrogène et en monoxyde de carbone. Après avoir traversé la turbine (316), la vapeur est injectée dans le moteur (102) par injection dans un orifice. Par un réglage sélectif des soupapes d'échappement (472, 474), les gaz d'échappement sont séparés en deux courants (409, 410) : un premier courant comprenant des gaz éjectés pendant la purge d'échappement, et un second courant de gaz éjectés pendant le reste de la course d'échappement du moteur. Les gaz de purge sont utilisés pour entraîner une turbine (519) distincte du turbocompresseur (316, 519, 124, 126).

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