초록 ▼

A method and apparatus is disclosed for efficiently reducing the amounts of nitrogen oxides contained in a combusted gas stream from an engine combustion chamber (14). Ammonia is reliably and instantaneously metered to the combusted gas stream conduit (24) in a preselected proportion to the fuel mas

A method and apparatus is disclosed for efficiently reducing the amounts of nitrogen oxides contained in a combusted gas stream from an engine combustion chamber (14). Ammonia is reliably and instantaneously metered to the combusted gas stream conduit (24) in a preselected proportion to the fuel mass flow rate and only in response to the sensed temperature of the combusted gas stream in the reactor (26) being within a preselected range.

대표청구항 ▼

A method of reducing the amounts of oxides of nitrogen contained in a combusted gas stream from an engine combustion chamber, comprising the steps of: conducting the combusted gas stream to a reactor; and metering ammonia to the combusted gas stream at a location between said combustion chamber and

A method of reducing the amounts of oxides of nitrogen contained in a combusted gas stream from an engine combustion chamber, comprising the steps of: conducting the combusted gas stream to a reactor; and metering ammonia to the combusted gas stream at a location between said combustion chamber and said reactor in a preselected proportion to the fuel mass flow rate supplied to said engine combustion chamber wherein the step of metering ammonia includes the step of metering the amount of ammonia in response to a fuel pump rack position and engine speed.