초록 ▼

A method for controlling a vehicle including an internal combustion engine having an idle speed includes controlling the idle speed based on system voltage, and increasing the idle speed when system voltage is low and the vehicle speed status indicates that the vehicle is stationary. In some embodim

A method for controlling a vehicle including an internal combustion engine having an idle speed includes controlling the idle speed based on system voltage, and increasing the idle speed when system voltage is low and the vehicle speed status indicates that the vehicle is stationary. In some embodiments, idle speed may ramp up with current demanded engine speed while the vehicle is moving.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for controlling a vehicle including an internal combustion engine having an idle speed, an alternator driven by the engine, a battery connected to the alternator, and a system voltage, the method comprising:determining a threshold voltage;monitoring the system

[ What is claimed is:] [1.]1. A method for controlling a vehicle including an internal combustion engine having an idle speed, an alternator driven by the engine, a battery connected to the alternator, and a system voltage, the method comprising:determining a threshold voltage;monitoring the system voltage;comparing the system voltage to the threshold voltage;determining a vehicle speed status; andcontrolling the idle speed based on the comparison, including increasing the idle speed when the system voltage falls below the threshold voltage and the speed status indicates that the vehicle is stationary;wherein the engine includes an injector and determining the threshold voltage further comprises:determining a voltage fluctuation that occurs when the injector fires; anddetermining the threshold voltage based in part on the voltage fluctuation.