Airflow guiding system for vehicle

Abstract

An airflow guiding system for a vehicle may include an air flap module with air flaps that are selectively opened/closed so that an engine compartment selectively receives external air from a front of the vehicle in accordance with a driving state of an engine, air holes that are formed through the air flap module, at an upper portion of the air flap module, and are kept open, and air ducts that supply air passed through the air holes or air from a front of the air flap module as intake air for the engine. The air passed through the air holes or the air from the front of the air flap module may be supplied as the intake air for the engine, even if the air flaps are closed.

What is claimed is: 
     
         1 . An airflow guiding system for a vehicle, comprising:
 an air flap module with air flaps that are selectively opened/closed so that an engine compartment selectively receives external air from a front of the vehicle in accordance with a driving state of an engine;   air holes that are formed through the air flap module, at an upper portion of the air flap module, and are kept open; and   air ducts that supply air passed through the air holes or air from a front of the air flap module as intake air for the engine,   wherein the air passed through the air holes or the air from the front of the air flap module is supplied as the intake air for the engine, even if the air flaps are closed.   
     
     
         2 . The system of  claim 1 , wherein the air ducts include:
 a central duct that receives the air passed through the air holes;   sub-ducts that receives the air from the front of the air flap module that does not pass through the air flaps or the air holes; and   supply ducts that supply the air passed through the central duct or the sub-ducts as the intake air for the engine.   
     
     
         3 . The system of  claim 2 , wherein the air ducts further include:
 duct chambers that collect the air passed through the central duct or the sub-ducts; and   connection ducts that connect the central duct with the duct chambers,   wherein the sub-ducts and the supply ducts are directly connected with the duct chambers, and the supply ducts supply the air collected in the duct chambers as the intake air for the engine.   
     
     
         4 . The system of  claim 3 , wherein the duct chambers have a predetermined volume to temporarily keep the air collected from the central duct or the sub-ducts. 
     
     
         5 . The system of  claim 3 , wherein the sub-ducts are elongated in a longitudinal direction of the vehicle from the front of the air flap module to the duct chambers. 
     
     
         6 . The system of  claim 1 , wherein the air flap module is disposed between a radiator grill and a cooling fan. 
     
     
         7 . The system of  claim 6 , wherein when the air flaps are opened, the external air ahead of the vehicle is supplied to the engine compartment sequentially through the radiator grill, the air flap module, and the cooling fan to cool the engine. 
     
     
         8 . The system of  claim 6 , wherein the sub-ducts receive the air passed through the radiator grill from between the radiator grill and the air flap module. 
     
     
         9 . The system of  claim 6 , wherein the air holes extend over the radiator grill from the upper portion of the air flap module to receive the external air over the radiator grill. 
     
     
         10 . The system of  claim 2 , wherein:
 the central duct is disposed at a center portion, not a side of a vehicle body, in a lateral direction of the vehicle body; and   the sub-ducts are disposed at least at one side of the air flap module and/or at both lateral sides of the vehicle body.