Method and apparatus for operating engine using equivalence ratio compensation factor

Abstract

A control system and method of controlling operation of an internal combustion engine includes a load determination module that determines an engine load, an equivalence ratio module that determines an equivalence ratio, a correction factor module that generates a correction factor based on the engine load, the equivalence ratio, and the engine speed and an engine operation module that regulates operation of the engine based on the correction factor.

Description

Technical field [0001] The present disclosure relates to engine control systems, and more particularly to torque-based control systems and methods for engines. Background technique [0002] The purpose of the background art description provided herein is to give the background of the present disclosure in general. The work of the currently signed inventors, to the extent described in this background art section, and aspects of the present invention that may not constitute prior art at the time of submission are not expressly or implicitly accepted as prior art of the present disclosure. [0003] The internal combustion engine combusts the air and fuel mixture in the cylinder to drive the piston and generate drive torque. The air flow into the engine is regulated by the throttle. More specifically, the throttle adjusts the area of ​​the throttle, which increases or decreases the air flow into the engine. When the throttle area increases, the air flow into the engine increases. T...

AI Technical Summary

Problems solved by technology

Due to the cooling effect of fuel vaporization, the manifold absolute pressure (MAP) sensor is not an accurate indication of the manifold partial pressure of air, especially under high load conditions

Because the cooling effect occurs downstream of the MAP sensor, the MAP sensor does not provide accurate readings

Therefore, the torque based on MAP may be miscalculated

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