Patent ID: 9670824
Date: 2017-06-06
CPC Classifications: B60K,F01P,Y02T

Claim:
1. A method for controlling vehicle grille shutters, comprising: adjusting only a first group of grille shutters and maintaining a second group of grille shutters closed over a first range of openings of the first group of grille shutters in response to a non-driven vehicle condition; and proportionally adjusting the first group of grille shutters and the second group of grille shutters together over a second range of openings of the first group of grille shutters, where the first and second groups of grille shutters are positionable in each of a first position with both the first group of grille shutters and the second group of grille shutters closed, a second position with the first group of grille shutters partially open and the second group of grille shutters closed, a third position with both the first group of grille shutters and the second group of grille shutters partially open where the first group of grille shutters is partially open with a grille shutter opening greater than at the second position, and a fourth position with both the first group and the second group of grille shutters fully open.