Engine control systems and methods for minimizing fuel consumption

摘要

An engine control system comprises a temperature control module and an engine disabling module. The temperature control module regulates a first temperature of an electrically heated catalyst (EHC) based on a first predetermined light-off temperature while an engine is shut down. The engine disabling module selectively disables start up of the engine when a second temperature of a passive catalyst is less than a second predetermined light-off temperature while a maximum torque output of an electric motor is greater than a desired torque output.

主权项

1. An engine control system comprising:
a first electronic circuit configured to regulate a first temperature of an electrically heated catalyst (EHC) based on a first predetermined light-off temperature while an engine is shut down; and a second electronic circuit configured to:
selectively startup the engine;selectively disable the startup of the engine when both:
a first determination that a second temperature of a passive catalyst is less than a second predetermined light-off temperature; anda second determination that a maximum torque output of an electric motor is greater than a desired torque output; andafter the startup, shut down the engine when both:
a third determination that the second temperature is less than the second predetermined light-off temperature; anda fourth determination that the maximum torque output is greater than the desired torque output,the shutdown stopping rotation of the engine.