Pre-throttle pressure control system and method

Abstract

A system for a vehicle includes a desired mass air flowrate (MAF) module and a desired effective area module. The desired MAF module generates a desired MAF through a throttle valve of an engine based on an engine torque request. The desired effective area module generates a desired effective area of the throttle valve based on a throttle inlet air pressure (TIAP) and the desired MAF. A throttle actuator module adjusts opening of the throttle valve based on the desired effective area.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the benefit of US Provisional Application No. 61 / 446,736, filed February 25, 2011. The disclosures of the aforementioned applications are incorporated herein by reference in their entirety. technical field [0003] The present disclosure relates to internal combustion engines, and more particularly, to pre-throttle pressure control systems and methods. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors, to the extent described in this Background section, and to the extent that they would not otherwise constitute prior art at the time of filing, are neither expressly nor impliedly considered to be relevant to this disclosure. compared to the prior art. [0005] Internal combustion engines combust an air and fuel mixture within cylinders to drive pistons, whic...

AI Technical Summary

Problems solved by technology

However, conventional engine control systems do not precisely control engine output torque as desired

In addition, conventional engine control systems do not provide rapid response to control signals or coordinate engine torque control among the various devices that affect engine output torque

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