System and Method for Improving Performance of Combustion Engines Employing Primary and Secondary Fuels

摘要

An engine system and method for operating an internal combustion engine in dynamically varying conditions. An exemplary system comprises an internal combustion engine configured to receive both a primary fuel and a secondary fuel into one or more chambers in which a combustion process occurs, a fuel injection system, an air intake manifold and a fuel manifold; an electronic system which controls timing and metering of the primary fuel and/or the secondary fuel in the combustion process; and a plurality of sensors positioned to measure one or more variables associated with combustion of the primary fuel in the presence of the secondary fuel. The electronic system is configured to apply a control signal to adjust an engine setting to reduce NOx emissions based in part on the magnitude of the variable.

主权项

1. A method for operating an internal combustion engine in dynamically varying conditions, comprising:
injecting a primary fuel into the engine; injecting into the engine a combustible, hydrogen-containing gaseous product while injecting the primary fuel into the engine; while injecting the gaseous product, continually monitoring a first sensor output signal representative of a magnitude of a first variable relating to operation of the engine; based on the continual monitoring of the first sensor output signal, continually generating (define term) a second signal which varies as a function of change in the first sensor output signal, the second signal having a different magnitude than that of the first sensor output signal from which it is derived (e.g., as a percentage of the first signal magnitude) and adjusting one or more engine parameters based in part on the second signal magnitude.