Selective closing of at least one vehicle opening at a front portion of a vehicle

• US 7,784,576 B2
• Filed: 10/24/2008
• Issued: 08/31/2010
• Est. Priority Date: 10/29/2004
• Status: Expired due to Fees

• Current Assignee: Daimler Trucks North America LLC (Mercedes-Benz Group AG)
• Original Assignee: Daimler Trucks North America LLC (Mercedes-Benz Group AG)
• Inventors: von Mayenburg, Michael, Guilfoyle, Matthew, Shin, Changhyun, Trabant, Carl
• Primary Examiner(s): Phan; Hau V
• Assistant Examiner(s): Meyer; Jacob
• Application Number:
  US12/257,978
• Publication Number:
  US 20090050385A1
• Time in Patent Office: 676 Days
• Field of Search: 180/68.1, 180/68.2, 701/36, 165/98, 123/41.04, 123/41.05, 123/41.06, 296/180.1, 296/193.1
• US Class Current: 180/68.1
• CPC Class Codes: B60K 11/04 Arrangement or mounting of radiators, radiator shutters, or radiator blinds B60K11/085 takes precedence
• CPC Class Codes: B60K 11/085 with adjustable shutters or blinds
• CPC Class Codes: B60R 19/48 combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
• CPC Class Codes: B62D 35/001 For commercial vehicles or tractor-trailer combinations, e.g. caravans
• CPC Class Codes: Y02T 10/88 Optimized components or subsystems, e.g. lighting, actively controlled glasses
• CPC Class Codes: Y10S 180/903 Airstream reactive vehicle or vehicle structure

Abstract

Mechanisms are described for selectively closing grille and/or bumper openings. These mechanisms may be operated in response to one or more vehicle parameters. Closure mechanism control signals may be delivered to such mechanisms along a vehicle databus. In addition, vehicle parameters used in determining the control of such mechanisms may be sensed and provided along the databus to a controller which then processes the parameter information for determining whether to open or close the vehicle grille closing mechanism and/or the vehicle bumper opening closing mechanism.

Claims

1. A method of controlling the flow of air through at least one vehicle opening, the at least one vehicle opening comprising at least one of a grille opening and a bumper opening, the method comprising:

sensing at least one vehicle operating parameter;

providing at least one parameter representing signal on a data bus representing the at least one vehicle operating parameter;

determining from said at least one parameter representing signal whether an adjustment in the extent to which the at least one opening is open to the air flow is to be made in response to the at least one signal;

providing a control signal on the data bus to cause the adjustment of the extent to which the at least one opening is open in the event the act of determining indicates that an adjustment is to be made;

wherein the sensed at least one vehicle operating parameter comprises the vehicle speed and at least one additional vehicle operating parameter; and

wherein the at least one opening is controlled to be closed substantially continuously while the vehicle speed is above a threshold speed and at least one additional vehicle operating parameter and at least one environmental condition in which the vehicle is operated are not at respective conditions indicating that the opening should not be closed.

2. A method according to claim 1 wherein

at least one additional vehicle operating parameter comprises an air conditioning compressor output pressure;

providing at least one parameter representing signal on a data bus representing the air conditioning compressor output pressure;

determining whether said air conditioning compressor output pressure exceeds a threshold;

providing a control signal on the data bus to cause at least the grill opening to remain open or be opened in the event the air compressor output pressure exceeds the threshold.

3. A method according to claim 2 wherein the sensed at least one additional vehicle operating parameter comprises at least one additional vehicle operating parameter in addition to the air conditioning output pressure.

4. A method according to claim 2 wherein the at least one additional vehicle operating parameter that is sensed further comprises a turbo charger output temperature, the at least one parameter representing signal on the data bus further including a signal representing the turbo charger output temperature.

5. A method according to claim 2 comprising providing the control signal on the data bus to at least one actuator operable in response to the control signal to adjust the position of an air flow restricting member that controls the air flow through the at least one opening.

6. A method according to claim 1 wherein the vehicle comprises at least one grille opening through a grill of the vehicle and at least one bumper opening through a bumper of the vehicle, the method comprising sensing plural vehicle operating parameters, providing parameter representing signals on the data bus representing the plural vehicle operating parameters, determining from the parameter representing signals whether at least one set of vehicle operating parameters is met for which the bumper opening is to be open while the grille opening is to be closed and providing at least one control signal on the data bus to cause opening of the grille opening and closing of the bumper opening upon the occurrence of said at least one set of vehicle operating parameters.

7. A method according to claim 1 wherein the vehicle comprises at least one grille opening through a grill of the vehicle and at least one bumper opening through a bumper of the vehicle, the method comprising providing control signals to selectively adjust the extent to which the bumper opening is open independently of the extent to which the grille opening is open under at least certain combinations of sensed vehicle operating parameters.

8. A method of controlling the flow of air through at least one vehicle opening, the at least one vehicle opening comprising at least one of a grille opening and a bumper opening, the method comprising:

sensing at least one vehicle operating parameter;

providing at least one parameter representing signal on a data bus representing the at least one vehicle operating parameter;

determining from said at least one parameter representing signal whether an adjustment in the extent to which the at least one opening is open to the air flow is to be made in response to the at least one signal;

providing a control signal on the data bus to cause the adjustment of the extent to which the at least one opening is open in the event the act of determining indicates that an adjustment is to be made; and

wherein the at least one vehicle operating parameter comprises whether an engine fan is on or off and wherein the at least one opening is controlled to be open at least a majority of the time when the engine fan is on.

9. A method of controlling the flow of air through at least one vehicle opening, the at least one vehicle opening comprising at least one of a grille opening and a bumper opening, the method comprising:

sensing at least one vehicle operating parameter;

providing at least one parameter representing signal on a data bus representing the at least one vehicle operating parameter;

determining from said at least one parameter representing signal whether an adjustment in the extent to which the at least one opening is open to the air flow is to be made in response to the at least one signal;

providing a control signal on the data bus to cause the adjustment of the extent to which the at least one opening is open in the event the act of determining indicates that an adjustment is to be made;

the act of providing a control signal comprising providing the control signal on the data bus to at least one actuator operable in response to the control signal to adjust the position of an air flow restricting member that controls the air flow through the at least one opening and also comprising providing a control signal on the data bus to the at least one actuator to cause an adjustment of the position of the air flow restricting member in the event the air flow restricting member has remained in one position for a threshold time period.

10. A method of controlling the air flow through at least one opening located at a front portion of a vehicle comprising:

sensing at least a speed of the vehicle;

sensing at least one other vehicle operating condition or an environmental condition; and

restricting the flow of air through the air flow opening in the event the speed is at least at a first value greater than a first threshold unless the at least one other vehicle operating condition or environmental condition is at a value indicating that the flow of air through the air flow opening is not to be restricted;

wherein the at least one other vehicle operating condition is whether an engine fan for the vehicle is on and wherein the flow of air through the air flow opening is not restricted for at least a majority of the time that the engine fan is on.

11. A method according to claim 10 comprising the act of adjusting the position of an air flow restrictor to accomplish the act of restricting the flow of air.

12. A method of controlling the air flow through at least one opening located at a front portion of a vehicle comprising:

sensing at least a speed of the vehicle;

sensing at least one other vehicle operating condition or an environmental condition;

restricting the flow of air through the air flow opening in the event the speed is at least at a first value greater than a first threshold unless the at least one other vehicle operating condition or environmental condition is at a value indicating that the flow of air through the air flow opening is not to be restricted;

comprising the act of adjusting the position of an air flow restrictor to accomplish the act of restricting the flow of air; and

comprising the act of temporarily moving the position of the air flow restrictor regardless of the vehicle speed and regardless of the value of said at least one other environmental condition or vehicle operating condition in the event the air flow restrictor has been in one position for at least a threshold time period.