A categorization based on overall form design using rough rectangle volumes. In the case of the one-box, also called a monospace or monovolume,[1] it is a single continuous volume. Slight wedge formed front or rear are still generally placed in this category. E.g.buses and the originalFord Econoline. The equivalentFrench term isvolume, which will sometimes be used by the British: "1-volume form".
A categorization based on overall form design using rough rectangle volumes. In the case of the two-box form, there is usually a "box" representing a separate volume from the A-pillar forward and second box making up the rest. E.g.,Station wagon,shooting-brake,Scion xB (2006). The equivalentFrench term isvolume, which will sometimes be used by the British: "2-volume form".
A categorization based on overall form design using rough rectangle volumes. In the case of the three-box form, there is a "box" delineating a separate volume from the A-pillar forward, a second box comprising the passenger volume, and third box comprising thetrunk area—e.g., aSedan. The equivalentFrench term isvolume, which will sometimes be used by the British: "3-volume form".
A demarcation or crease between a vehicles body panels and the side windows. Typically it refers to where an individual wears abelt attached to trousers.
Thebatsman's crease on the centreline of the 1963Chevrolet Corvette (C2) is carried from the roof to the tail
Batsman's crease
A tangent break feature line running along the centreline of a car. This kind of feature can be seen on many modernVauxhall,Opel andChrysler models. Literally derived from the break found on the rear side of acricket bat.
The trim or bodywork that surrounds a light, holds the face of an instrument in position, or decoratively conceals gaps between bodywork and components as an escutcheon. Often chrome or plastic
The body panel of the vehicle that covers the engine. Typically a horizontal surface, hinged at thecowl, but sometimes hinged at the headlights instead. Also known as ahood.
1957Rambler Custom estate / station wagon with openedboot
Boot
The trunk or liftgate of the vehicle that opens for access to the cargo area. Typically at the rear of the vehicle.
Virgil Exner's design for the 1955–56Imperial included extensivebrightwork in the grille, bumper, wheels, and window trim
A type of door sometimes seen on high-performance cars. They are similar to but distinguished fromscissor doors by their hinge point. While scissor doors move straight up via hinge points at the bottom of the A-pillar, butterfly doors move up and out via hinges along the A-pillar.
First seen on the second generationCadillac Seville, this was a short lived design trend. Inspired by the English coachbuilderHooper & Co.'s "Empress Line" designs from the early 1950s, these were a unique take on trunk-body integration allowing for a shortened trunk and a rakish rear end.
Bodywork of a vehicle. Also the workshop at which automotive body work is built on a prototype or low volume production basis, typically with extensive handwork.
The distinctcharacter line of thisAston Martin Lagonda (series 2) runs horizontally from tip to tail, interrupted at each wheel arch.
Character line
A line creased into the side of a car to give it visual interest. (interchangeable with swage line) Sometimes implemented by arubbing strip.
Chrome details on thisFerrari 250 GT Coupé "Boano" include the window frames, rear view mirrors, wiper arms, headlight bezels, front grille, and bumper.
The gray plasticcladding of aPontiac Montana contrasts with the red body panels
Cladding
Material (usually plastic) added to exterior of the car which isn't structurally necessary. May be functional to keep out dirt/debris as in underbody cladding, or may be cosmetic.
Generally used in a car or truck for heating and cooling inside car environment according to the passenger requirements. Basically it is divided into different modes, blower speed functions, AC, temperature, and fresh recirculation of air. Worldwide control panel manufacturers are BHTC, Delphi, Visteon, Valeo, etc.
Thecowl of thisWiesmann GT includes two openings for the wiper motors
A slang term for chrome conical shaped styling elements which began to appear on the front bumper/grille assemblies of certain American automobiles following World War II. The term is derived from the notable physical attributes ofDagmar, a buxom early 1950s television personality known for low-cut gowns and pronouncedly conical bra cups.
Daylight Opening (DLO)
refers to the window openings in the§ Greenhouse of a vehicle
US DOT Term: For openings on the side of the vehicle, other than a door opening, the locus of all points where a horizontal line, perpendicular to the vehicle longitudinal centerline, is tangent to the periphery of the opening.
US DOT Term: For openings on the front and rear of the vehicle, other than a door opening, daylight opening means the locus of all points where a horizontal line, parallel to the vehicle longitudinal centerline is tangent to the periphery of the opening.
Adaytime running lamp (DRL, also daytime running light) is an automotive lighting and bicycle lighting device on the front of a roadgoing motor vehicle or bicycle,[1] automatically switched on when the vehicle is in drive, emitting white, yellow, or amber light. Their job isn't to help the driver see the road but to help other road users see the vehicle.
The critical relationship between front wheel centers and the windshield base. The most notable differences can be seen between cars withfront-engine, front-wheel drive layout andfront mid-engine, rear-wheel drive layout: the former tend to have longer front overhangs with a smaller dash-to-axle ratios, while the latter have shorter front overhangs with much greater dash-to-axle. Most so called premium vehicles (equipped with rear wheel drive) feature a relatively long dash-to-axle ratio.[2]
Deck
The horizontal surface at the rear of the car, which usually serves as the trunk lid.
TheVolkswagen GolfHarlequin features multi-color body panels; in this example, thedog leg is yellow, extending from the rocker to the roof
Dog leg
The area behind the rear door on a four-door car. This area is part of the quarter panel just behind the door and in front of the rear wheel house.
Down the Road Graphics (DRG)
The styling of the front end of the car, which people will instantly recognize and associate with a manufacturer. For example, the grille, lights and sometimes the DLO.
Term for cowl covering the wheels of the vehicles. In more modern automobiles, this refers generally to the body panel or panels starting at the front "bumper" to the first door line excluding the engine hood. The opposite of the fender is the "quarter panel".
A car or motorcycle exhaust tip with the sides forming a tapering design- either horizontal or vertically aligned - often made to look like the tail of a fish . "Koenigsegg Regera" uses a modern example of this design. These were made popular in the 1920's by their implementation in the Brooklands silencer which were necessitated by the noise regulations at the Brooklands race track.
Workers fit an engine with transmission to theframe at the FordLong Beach Assembly plant
Frame-on-rail
Also known asbody-on-frame. A design used in older (pre-unibody) cars, trucks, and SUVs. The power train and body are mounted to a rigid structuralvehicle frame, also known as a rail, and the body is a distinct structure that is mounted to the frame. In some cases, the distinction between a body-on-frame and unibody construction are blurred; for example, subframes could be used to carry suspension components, or the body could be a separate module, such as the case of theBMW i3.
Car doors that are hinged at the roof rather than the side, as pioneered by the 1952 Mercedes-Benz 300SL race car. Opening upwards, the doors evoke the image of a seagull's wings.
The pivot point between the torso and upper leg portions of the body, either relative to the floor of the vehicle[1] or relative to the height above pavement level, as used in vehicle design.
Hood
The engine cover on vehicles when the engine is located forward or aft of the passenger compartment. Also known as abonnet in English speaking countries outsideNorth America with the exception of the Canadian Maritimes
HVAC
Heater, ventilation and air condition. A major package constraint both technically as well in interior design.
Instrument Panel. The dashboard is termed the instrument panel in the automotive industry. Sometimes this term is confused with the instrument cluster, the group of speedometer, odometer and similar devices generally behind the steering wheel.
A distinctively shaped inlet that is flush and begins with a narrow, shallow inset and becomes progressively wider and deeper. The duct was developed to introduce cooling air into aircraft engine nacelles, while increasing the drag of the nacelle only minimally. The duct was developed at the National Advisory Committee for Aeronautics (NACA).
The distance the car's body extends beyond the wheelbase at the front (front overhang) and rear (rear overhang). In car style design terms, this is the amount of body that is beyond the wheels or wheel arches. In general, the sum of the front and rear overhangs is equal to the overall length minus the wheelbase. Typically, the rear overhang is larger on rear-wheel drive cars, while the front overhang is larger on front-wheel drive cars.[4] Journalist Paul Niedermeyer has proposed anoverhang ratio, computed as.[5]
An open vehicle, usually with 4 doors, with a removable and/or retractable cloth top and a windshield characterized by the lack of integrated glass side windows. Contemporary uses of this name do not always follow this original description or apply to an open vehicle.
A structural member that connects the roof to the body of the car. Pillars are usually notated from front to back alphabetically (e.g. the A-pillar joins the windshield to the frontmost side windows, the B-pillar is next to the front occupants' heads, etc.).
The angle of the A-pillar and the§ dash-to-axle are related. An imaginary line extending from the base of the A-pillar and following its angle will pass in front of the front axle for most front-wheel drive and mid-engined cars, while it will pass through or behind the front axle for most rear-wheel drive cars. Pulling the A-pillar forward increases cabin volume, but the car will tend to assume a§ one box shape and the A-pillar position may interfere with the driver's vision.[3]
The C-pillar usually is the last structural pillar in most§ three box forms. Its angle and position defines the split between cargo volume and rear-seat passenger volume and headroom. In general, the base of the C-pillar is located over the rear wheel arch in most sedans (saloons) and coupes.[6]
US DOT Term: Means any structure, excluding glazing and the vertical portion of door window frames, but including accompanying molding, attached components such as safety belt anchorages and coat hooks, that (1) supports either a roof or any other structure (such as a roll-bar) above the driver's head or (2) is located along a side edge of a window.
Ford Taurus SHO, showing the windshield wiperplenum at the base of the windshield and the serpentineintake manifold of the Yamaha-designed V6 engine
Plenum
The area at the base of the windshield where the wipers are parked. Also refers to the main chamber in anintake manifold.
A 1930s–1960s design genre when distinctrunning boards and fully articulatedfenders became less common and bodywork began to enclose the full width and uninterrupted length of a car in a markedly bulbous, slab-sided fashion.
Cadillac ELRplug-in hybrid electric vehicle recharging its traction battery through aSAE J1772 connector
(or rear quarter panel) refers to the panel at the back sides starting at the rear edge of the rearmost doors, bordered by at top by the trunk (boot) lid and at bottom by the rear wheel arches ending at the rear bumper. This is the opposite of the fender.
Literally, the term originally referred to the rear quarter or the car's length.
The first application of the termrake in vehicles was probably the tilting back of the windshield's top.[citation needed] Nowadaysrake refers to the angle between the overall vehicle and the horizontal axis of the ground. If the back is higher than the front, the vehicle is said to have positive rake; if the front is higher than the back, this is negative rake. In early hot rod and custom cars, positive rake was created by varying tire size, and/or by suspension modification. In today's body design, positive rake is integral in some vehicles' styling, e.g. Mercedes E350 sedan, circa 2012/13.
An open vehicle, usually with 2 doors, with a removable and/or retractable cloth top and a windshield characterized by the lack of integrated glass side windows. Contemporary uses of this name do not always follow this original description. A classical roadster is a two-seater with a long hood and a short back, which means the driver is sitting in the rear of the vehicle (close to the rear axle). Usually it is a rear-wheel-driven car.
Alfa Romeo 75 with prominent extended body-coloredrocker panels and fender flares
Rocker
The body section below the base of the door openings sometimes called the "rocker panels", or§ sills.
Rocker rail
Body armor protecting the Rocker, found mostly in off-road vehicles. Term coined by engineers atMetalCloak.[citation needed]
Peugeot 405 with prominent blackrubbing strips running horizontally along the sides
Rubbing strip
Plastic/rubber line or moulding to prevent side-swiping along the doors.
The hockey stick is an automotive design feature seen on nearly all Saab automobiles. It refers to the curve formed by the C-pillar in the rear corner at the base of the rear passenger window, which resembles the shape of an ice hockey stick or the Nike swoosh symbol.
(Lamborghini doors) are automobile doors that rotate vertically at a fixed hinge at the front of the door, rather than outward as with a conventional door.
Intakescoop on top of the hood of anAMC Rebel "The Machine"
Inset or protrusion that implies the intake of air. May be functional for cooling/ventilation or purely ornamental. When mounted directly to the engine and allowed to protrude through the hood/bonnet, known as ashaker scoop as it vibrates in response to the throttle.
Once a vehicle designed to carry hunters and sportsmen; now astation wagon or vehicle combining features of astation wagon and acoupe.
Theshoulder line of aVolvo S80 (TS) extends from front to rear along the base of the greenhouse
Shoulder line
The line or "shoulder" formed by the meeting of top and side surfaces extending from hood/fender shoulder to boot-lid/quarter-panel shoulder. The strongest example of this feature can be found on more modern ofVolvo Cars.
On lower trim levels of theBMW 3 Series (E36), thesill extensions below the door were left unpainted
Sill
The body section below the base of the door openings sometimes called the "rocker panels", or "rockers".
Sill line
Imaginary line drawn following the bottom edge of the greenhouse glass.
Six line
A line extending from the C-pillar down and around the rear wheel well.
Checker A-11 taxi featuredsixthlights for the rear-seat passengers
Sixthlight
Also calledquarter glass; fixed glass located in between the side-door and boot.
Side doors hinged at the rear of the car with the latch at the front of the car. If accidentally opened while driving at a high speed, such doors would be blown backward.
1967Plymouth GTX with pronouncedswage line running fore and aft
Crease or curvature in the side of the body used to create visual distinction. Sometimes the crease is functional and improves rigidity of the outer body (also known ascharacter line).
Swan doors operate in a similar way to conventional car doors but unlike regular doors, they open at an upward angle. These help to prevent the bottom edges of doors on low cars from scraping on curbs. Common on Aston Martin cars.
Swedish kiss
A negative flick-out to a flat surface which frames trim sections or venting.
Whilewheelbase is measured axle-to-axle and generally does not change whether measured from the left or right side,track is measured wheel-to-wheel and may vary from front to rear
Track
The distance across the car between the base of the left and right wheels (like wheelbase, but side-to-side).
Replacement fenders found on off-road vehicles designed as part of body armor for off-road vehicles. Used to protect the thin sheet metal bodies from damage while off-roading.
Refers to the way the sides of a car round inward toward the roof, specifically the sides of the greenhouse above the beltline. This term is borrowed from nautical description of marine vessels.
Shape of the car as seen in the side profile. May be positive, negative or neutral. If the front is lower than the rear, then it is wedge-positive. If the rear is lower it is wedge-negative. If the car appears level from front to rear, then it is wedge neutral.
Gillig buses have an octagonalwheel arch as a signature styling detail
Wheel arch
The visible opening in the side of a car allowing access to the wheel. In some cases, the wheel arch is covered withwheel spats for a more formal appearance or aerodynamic considerations.
Thewheel arch gap is pronounced on thisToyota 4Runner, to facilitate its intended off-road use
Wheel arch gap
The space between the tire and the wheel well. Currently there is a trend towards smaller wheel arch gaps. Sometimes referred to as Dead Cat Space due to the fact that, in winter, many domestic cats try to seek shelter in wheel wells of recently parked cars in an attempt to stay warm.
The distance measured along the vehicle's length between the centrelines of each axle, which may be approximated from where the front and rear wheels meet the ground. Cars have typical proportions that have a wheelbase of approximately three wheel diameters (±1⁄4) between the wheels, giving a wheelbase that is approximately four times the outer diameter of the wheel and tire.[4]
ThisWillys MB has a circular rearwheel well and an angled one for the front
Wheel well (also wheelhouse, wheelhousing, or bucket)
US DOT Term: Molding of any material between the windshield glazing and the exterior roof surface, including material that covers a part of either the windshield glazing or exterior roof surface.
TheLotus Seven series of cars has frontwings that are not integrated into the body
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