Active engine hood venting systems and control logic for operating active hood vents

A motor vehicle comprising:

• a vehicle body defining an engine compartment with an access opening;
• a prime mover mounted inside the engine compartment;
• an engine hood assembly covering the access opening and including a vent;
• an active venting device fluidly coupled to the vent in the engine hood assembly, the active venting device being automated to selectively switch between closed and open states to respectively obstruct and unobstruct the vent;
• and
• a vehicle controller communicatively connected to the active venting device, the vehicle controller being programmed to:
• determine if a calibrated vehicle venting condition exists, the calibrated vehicle venting condition including a current speed of the motor vehicle exceeding a calibrated highway cruise speed concurrent with an operating temperature of the prime mover exceeding a calibrated nominal temperature;
• determine if a calibrated vehicle speed condition exists, the calibrated vehicle speed condition including the current speed of the motor vehicle exceeding the calibrated highway cruise speed concurrent with the operating temperature of the prime mover not exceeding the calibrated nominal temperature;
• responsive to a determination that the calibrated vehicle venting condition exists, command the active venting device to transition to the open state and thereby allow venting fluid flow through the vent;
• and
• responsive to a determination that the calibrated vehicle speed condition exists, command the active venting device to transition to the closed state and thereby restrict the venting fluid flow through the vent.

A non-transitory, computer readable medium storing instructions executable by an onboard vehicle controller of a motor vehicle, the motor vehicle including an engine assembly and an engine hood with a vent and an active venting device fluidly coupled to the vent, the active venting device being switchable between closed and open states to respectively obstruct and unobstruct the vent, the instructions causing the vehicle controller to perform steps comprising:

• determining if a calibrated vehicle venting condition exists, the calibrated vehicle venting condition including a current speed of the motor vehicle exceeding a calibrated highway cruise speed concurrent with an engine operating temperature of the engine assembly exceeding a calibrated nominal engine temperature;
• determining if a calibrated vehicle speed condition exists, the calibrated vehicle speed condition including the current speed of the motor vehicle exceeding the calibrated highway cruise speed concurrent with the engine operating temperature of the engine assembly not exceeding the calibrated nominal engine temperature;
• responsive to a determination that the calibrated vehicle venting condition exists, transmitting a first command signal to the active venting device to transition to the open state and thereby allow venting fluid flow through the vent;
• and
• responsive to a determination that the calibrated vehicle speed condition exists, transmitting a second command signal to the active venting device to transition to the closed state and thereby restrict the venting fluid flow through the vent.