초록 ▼

This specification discloses a method for generating an engine energy output signal for use by an adaptive strategy in controlling the performance of a spark ignited automobile combustion engine. An estimated future energy output combines the weighted sum of a short term energy output average, a med

This specification discloses a method for generating an engine energy output signal for use by an adaptive strategy in controlling the performance of a spark ignited automobile combustion engine. An estimated future energy output combines the weighted sum of a short term energy output average, a medium term energy output average and a long term energy output average. The adaptive strategy adjusts spark timing and distance of EGR as a function of engine energy usage per distance traveled while maintaining feedgas emissions at a constant level over a wide variety of driving patterns including urban, suburban and highway. This adaptive strategy has advantageous fuel consumption characteristics which are greatest at the most constrained feedgas levels. Drivability can be enhanced because of the greater calibration flexibility inherent to the adaptive technique.

대표청구항 ▼

A method of generating an energy output signal for use in controlling the performance of a spark ignited automobile internal combustion engine, said method including the steps of: generating a short term energy output average during a relatively short duration length of time; generating a medium ter

A method of generating an energy output signal for use in controlling the performance of a spark ignited automobile internal combustion engine, said method including the steps of: generating a short term energy output average during a relatively short duration length of time; generating a medium term energy output average during a medium duration length of time, said medium duration being longer than said short duration; generating a long term energy output average during a relatively long duration of time, said long duration being longer than said medium duration; generating an estimated future energy output by combining a weighted sum of the short term, medium term and long term energy outputs, the weighting being a coefficient A for the short term output, a coefficient B for the medium term output and a coefficient C for the long term output.