Importance

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Abstract

A method of controlling exhaust gas temperature in an engine system including an internal combustion engine, a supercharger, a supercharger bypass arrangement and an exhaust aftertreatment module. The supercharger bypass arrangement is operable to selectively direct intake gas substantially to the supercharger or to direct the intake gas to the engine substantially bypassing the supercharger. The method includes determining an engine load and selectively controlling operation of the supercharger and supercharger bypass arrangement, based upon the engine load, to control the temperature of the exhaust gas to maintain it in a predetermined temperature range associated with the exhaust aftertreatment module.

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First Claim