Panhard rod
Information about Panhard rod
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A Panhard rod or track bar is a component of a car suspension system that provides lateral location of the axle. Originally invented by the Panhard automobile company of France in the early twentieth century, this device has been widely used ever since.
While the purpose of the rear suspension of an automobile is to allow the wheels to move vertically with respect to the body, it is undesirable to allow them to move forward and backwards, or from side to side. It is this latter movement that the Panhard rod is designed to prevent. It is a simple device, consisting of a rigid bar running sideways in the same plane as the rear axle, connecting one end of the axle to the car body or chassis on the opposite side of the vehicle. The bar is attached on either end with pivots that permit it to swivel upwards and downwards only, so that the axle is in turn allowed to move in the vertical plane only. This does not effectively locate the axle longitudinally, therefore it is usually used in conjunction with trailing arms which locate the axle in the longitudinal direction. This arrangement is not usually used with a leaf spring rear suspension, where the springs themselves supply enough lateral rigidity, but only with coil spring suspensions.
The advantage of the Panhard rod is its simplicity. Its major disadvantage is that the axle must necessarily move in an arc, relative to the body, with the radius equal to the length of the Panhard rod. If the rod is too short, there will be excessive sideways movement between the axle and the body at the ends of the spring travel; therefore the Panhard rod is less desirable on smaller cars than larger. A suspension design that is similar but dramatically reduces the sideways component of the axle's vertical travel is the Watt's linkage.
See Also
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Solid axle and Panhard rod on a 2002 Mazda MPV
automobile (from Greek auto, self and Latin mobile moving, a vehicle that moves itself rather than being moved by another vehicle or animal) or motor car (usually shortened to just car) is a wheeled passenger vehicle that carries its own motor.
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capitalizations in this article need to be corrected: (1) All proper names should be capitalized in the body of the text
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axle is a central shaft for a rotating wheel or gear. In some cases the axle may be fixed in position with a bearing or bushing sitting inside the hole in the wheel or gear to allow the wheel or gear to rotate around the axle.
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Panhard is a French manufacturer of light tactical and military vehicles. It was formed by the acquisition of Panhard by Auverland in 2005. Panhard had been under PSA ownership for 40 years. The combined company now uses the Panhard name.
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Motto
Liberté, Égalité, Fraternité
"Liberty, Equality, Fraternity"
Anthem
"La Marseillaise"
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Liberté, Égalité, Fraternité
"Liberty, Equality, Fraternity"
Anthem
"La Marseillaise"
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twentieth century of the Common Era began on January 1, 1901 and ended on December 31, 2000, according to the Gregorian calendar. Some historians consider the era from about 1914 to 1991 to be the Short Twentieth Century.
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chassis (plural: "chassis") (IPA: /ˈʃæːsiː, ˈtʃæːsiː/) consists of a framework that supports an inanimate object, analogous to an animal's skeleton, for example in a motor vehicle or a
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A trailing-arm suspension is an automobile suspension design in which one or more arms (or "links") are connected between (and perpendicular to and forward of) the axle and the chassis. It is usually used on rear axles.
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leaf spring is a simple form of spring, commonly used for the suspension in wheeled vehicles. It is also one of the oldest forms of springing, dating back to medieval times.
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Watt's linkage was invented by James Watt (19 January 1736 – 19 August 1819) to constrain the movement of a steam engine piston in a straight line.
The idea of its genesis using links is contained in a letter he wrote to Matthew Boulton in June 1784.
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The idea of its genesis using links is contained in a letter he wrote to Matthew Boulton in June 1784.
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A Scott Russell linkage converts linear motion, to (almost) linear motion in a line perpendicular to the input. These linkages are often used in front wheel drive vehicles with solid rear axles to control lateral movement, as they do not share the dissadvantages of the asymmetric
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