Patent ID: 7130736
Filing Date: 2006-10-31
Classification: F02D

Abstract:
1. A method for governing a compression ignition engine, the method comprising: a) processing data values for actual engine speed and desired engine speed to yield a data value for engine speed error; b) processing the data value for engine speed error according to a governor algorithm for yielding a data value for a mass fuel rate for governed fueling of the engine; c) processing the data value for mass fuel rate for governed fueling of the engine and the data value for actual engine speed to yield a data value for a quantity of fuel to be injected into an engine cylinder during an ensuing stroke of a piston within the cylinder; and d) injecting that quantity of fuel into the cylinder during that stroke; in which step c) comprises processing the data value for mass fuel rate for fueling the engine and the data value for actual engine speed such that i) an increase in the data value for actual engine speed relative to the data value for desired engine speed will cause the data value for a quantity of fuel to be injected into an engine cylinder during an ensuing stroke of a piston within the cylinder to decrease, and ii) and a decrease in the data value for actual engine speed relative to the data value for desired engine speed will cause the data value for a quantity of fuel to be injected into an engine cylinder during an ensuing stroke of a piston within the cylinder to increase.