Driver torque request systems and methods

Abstract

The invention relates to a driver torque request system, comprising a minimum torque module. The minimum torque module selectively determines a first minimum propulsion torque based on second and third minimum propulsion torques when a torque converter clutch is in unlocked and locked states, respectively. A zero pedal torque module selectively sets a zero pedal torque equal to the first minimum propulsion torque. A pedal request module determines a pedal torque request based on an accelerator pedal position, a vehicle speed, and the zero pedal torque. A driver request module determines a driver axle torque request based on the pedal torque request. A shaping module selectively shapes the driver axle torque request into a shaped driver axle torque request. A conversion module converts the first minimum propulsion torque into a minimum axle torque. A final driver request module sets a final driver axle torque request equal to a greater of the shaped driver axle torque request and the minimum axle torque.

Description

technical field [0001] The present disclosure relates to internal combustion engines, and more specifically, to driver torque requests. Background technique [0002] 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 aspects of the invention that may not have constituted prior art at the time of filing are not admitted, expressly or by implication, to be prior art to the present disclosure. [0003] Internal combustion engines combust an air and fuel mixture within cylinders to drive pistons and generate drive torque. Air flow into the engine is regulated by a throttle valve. More specifically, the throttle adjusts throttle area, which increases or decreases air flow into the engine. When the throttle area increases, the air flow into the engine increases. A fuel control system adjusts the rate of fuel inject...

AI Technical Summary

Problems solved by technology

However, conventional engine control systems cannot control engine torque output as precisely as required

In addition, conventional engine control systems do not provide as fast a response to control signals as desired or coordinate engine torque control among various devices that affect engine torque output

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