Patent ID: 9097172
Filing Date: 2015-08-04
Classification: B60W,F01P

Abstract:
1. An engine control system for a vehicle, comprising: a pump control module that disengages a switchable water pump from an engine upon startup of the engine; a heating request determination module that infers whether heating of a passenger cabin of the vehicle has likely been requested based on ambient air temperature, humidity of ambient air, and a status of an air conditioner clutch; and a climate control interface module that receives user input for cooling and heating of a passenger cabin of the vehicle, that controls a blower based on the user input, that is separate from the pump control module and the heating request determination module, and that does not transmit user input for heating of the passenger cabin to the pump control module or to the heating request determination module, wherein, when the heating request determination module infers that heating of the passenger cabin has likely been requested, the pump control module engages the switchable water pump in response to a determination that a difference between a coolant temperature and the ambient air temperature is greater than a predetermined temperature difference.