Grille 1029526 222082898 2008-06-27T13:57:57Z ماني 7206760 interwiki Persian {{wiktionary|grille}} [[Image:BMW grille.jpg|thumb|250px|BMW's distinctive kidney-shaped grille on an [[BMW M5 (E34)|E34 M5]]]] [[Image:AudiTT2G grille.jpg|thumb|250px|Audi's "single frame" grille, here on a second generation [[Audi TT|TT]]]] [[Image:CVPI Police Grille.jpg|thumb|250px|Crown Victoria Police Interceptor black honey comb grille [[CVPI]]]] {{dablink|[[Grille (artillery)|Grille]] is also the name of a [[Nazi Germany|German]] [[self-propelled artillery]] vehicle. For the cooking equipment, see [[Grill (cooking)|grill]].}} <!-- Commented out because image was deleted: [[Image:Grand prix grille.jpg|thumb|300px|The grille of a [[Pontiac Grand Prix]], as seen above is similar to most BMW vehicles]] --> A '''grille''' is an opening of several slits side by side in a wall or metal sheet or other barrier, usually to let air or water enter and/or leave but keep larger objects including people and animals in or out. ==In powered vehicles== In [[automotive engineering]], a '''grille''' is an opening in the bodywork of a vehicle to allow air to enter. Most vehicles feature a grille at the front of the vehicle to allow air to flow over the [[radiator]] and cool the engine compartment. Other common grille locations include below the front [[Bumper (automobile)|bumper]], in front of the wheels (to cool the brakes), in the cowl for cabin ventilation, or on the rear deck lid (in [[rear engine]] vehicles). Some cars have what appear to be tiny grilles which are not positioned to duct air through the radiator. These are [[horn grille]]s, which enable the sound of the horn to be clearly heard forward. The grille is often a distinctive styling element, and many [[marque]]s use it as their primary brand identifier. For example, [[Jeep]] has trademarked its seven-bar grille style. <ref>{{web cite|url=http://www.wndu.com/news/112002/news_17302.php|title=Daimler Chrysler loses battle for injunction against GM H2 grille|accessdate=2006-07-17|date=2002-11-18}}</ref> [[Rolls-Royce car|Rolls-Royce]] is famous for arranging its grille bars by hand to ensure that they appear perfectly vertical. Other makers known for their grille styling include [[Bugatti]]'s horse-collar, [[BMW]]'s split kidney, [[Rover (car)|Rover]]'s chrome "teeth", [[Dodge]]'s cross bar, [[Alfa Romeo]]'s 6-bar shield, [[Volvo]]'s slash bar, [[Audi]]'s relatively new, so-called ''single-frame'' grille, and an eggrate grill on late-generation [[Plymouth automobile|Plymouths]]. The unusual 1971 [[Plymouth Barracuda]] grille is known as a ''cheesegrater''. [[Ford]]'s three-bar grille, introducted on the 2006 [[Ford Fusion (North America)|Fusion]] has become distinctive as well. The contrary styling pattern also occurs. Starting from the late 1930s, [[Cadillac]] would alternate its pattern from horizontal bars to various patterns of crosshatching as a simple way of making the car look new from year to year, for this make did not have a standard grille form. Sometimes there is a sort of fashion trend in grille bars. For example, in the early years after [[World War II]], many American car makers generally switched to fewer and thicker grille bars. A billet grille is an [[Aftermarket (automotive)|aftermarket]] part that is used to enhance the style or function of the original [[Original equipment manufacturer|OEM]] grille. They are generally made from [[Billet (manufacturing)|billet]], solid bar stock aircraft grade aluminum or stainless steel, although some are CNC Machined from one solid sheet of aluminum. [[Custom car|Customizers]] would alter the grille as a matter of course in personalizing their car, taking the grille bar from another make, for example. Even sheet metal with patterned holes for ventilation grating sold to homeowners for repair has been found filling the grille opening of custom cars. ===History=== Grilles on automobiles have taken on different designs through the years. This feature first appeared on automobiles in 1903. Several years later, the arch-shaped design became common and became the standard design on automobile grilles for many years. The "split" grille design first appeared in 1923 on the [[Alfa Romeo]] sportscar. In the 1930s and 1940s, automobile manufacturers became creative with their grille designs. Some these designs were bell-shaped ([[Buick]], [[Chevrolet]], and [[Pontiac]]), split and slightly folded ([[Silver Arrows|Silver Arrow]], [[Mercury (automobile)|Mercury]], 1946 [[Oldsmobile]]), cross-shaped (pre-war [[Studebaker Champion]] models, 1941 [[Cadillac]], 1942 [[Ford]]), while some including [[Packard]], [[Rolls-Royce (car)|Rolls-Royce]], and [[MG-TC]] models still followed the older arch-shaped design. Grilles took on a new look after World War II. Following the introduction of the 1947 Buick, [[Studebaker]], and [[Kaiser Motors|Kaiser]], grilles became shorter and wider to accommodate for the change in design. ==In heating and ventilating and air conditioning== In [[HVAC|heating and ventilating and air conditioning]] for [[room air distribution]], a ''grille'', specifically spelled with the ending ''e'', is a class of air terminals.<ref>''Designer's Guide to Ceiling-Based Air Diffusion'', ASHRAE, Inc., Atlanta, GA, USA, 2002</ref> Most HVAC grilles are used as return or exhaust air inlets to [[Duct (HVAC)|ducts]], but some are used as supply air outlets. [[Diffuser (thermodynamics)|Diffusers]] and [[nozzle]]s, are, for example, used as supply air outlets too. ''Registers'' are a type of HVAC grille that also incorporates an air damper.<ref name=A97FUND>ASHRAE Handbook: Fundamentals (SI Edition), 1997</ref> ==See also== {{Commons|Automobile grills|Grille}} *[[Diffuser (automotive)]] ==References== {{reflist}} {{CarDesign nav}} [[Category:Auto parts]] [[Category:HVAC]] [[Category:Automotive styling features]] [[de:Kühlergrill]] [[fa:جلوپنجره]] [[it:Calandra (veicoli)]] [[ja:フロントグリル]]