Remedy MacPherson (McPherson)

Suspension is MacPherson type wishbone uchyceným implemented under the axle, spring struts and the damping unit and steering connecting rod. The advantages of this design are small unsprung mass, rugged construction of the lower arm (usually triangular) and compact construction.

Remedy is derived from the MacPherson wishbone axles, the upper arm is replaced with the sliding direction. It has a trapezoidal correction compared to the advantage of obtaining more space as storage unit or a spacious luggage compartment. The lower control arm is triangular. If this remedy is used as a control, records the wheel while driving around both telescopic strut bearings, as shown. Line AB Rejdová then form the axis of the wheel.

kinematic scheme MacPherson-type suspension

Leadership in the post is designed as a hydraulic shock absorber. Such a solution requires a much stiffer and stronger construction of silencers. Rod is due to the greater transverse load much stronger than other types of axles. To avoid unwanted friction piston-cylinder and piston-management is often stored at an angle helical spring or upper bearing is placed into the soft rubber bed.

MacPherson-type front axle

Kinematic points MacPherson axles are shown in the upper figure. The pole pitch wheel P and S body roll is always above the ground plane. During suspension axles and body tilt wheel changing the value deviation. This change creates a gyroscopic torque that causes the vibration of the steering wheel and anxiety management. Vibration control system arises mainly went energized frequencies close to his own.

MacPherson axle Mercedes-Benz E-Class

History
Today the most widely used type of suspension MacPherson suggested American Earle Steele MacPherson (not McPherson, as is often erroneously reported) in the forties of the last century. Earl MacPherson was born in 1891 in Illinois. During World War II he worked for Chevrolet. Chevrolet General Manager ME Coyle was then worried about the potential purchase of post-war America, and therefore decided to develop a new small and inexpensive car. He did not state more than $ 1000 which was 10% less than the cheapest Chevy yet. Coyle named to the spring of 1945 MacPherson small car project chief designer, who had come on the market under the name Chevrolet Cadet.

Earle Steele MacPherson designer

This car was to bring a number of technical enhancements, including independent suspension, which was until then the prerogative of European cars. Management of GM and Chevrolet protested inovátorským procedures MacPherson and chief engineer said that the car will be too expensive. MacPherson chose therefore cost effective suspension, which later got its name. MacPherson and his collaborators were to design a new suspension design inspired by some other designer. It was the Guido the Italian FIAT Fornace, who in 1927 filed several patents similarly conceived. None of these patents, however, was not directly comparable with the proposal MacPherson. Earle MacPherson originally planned to use a new independent suspension for front and rear axle.

Chevrolet Cadet with front and rear axle type MacPherson

According to GM's management was not so weak post-war market and the Chevrolet Cadet project was finally stopped in May 1947. Earl MacPherson same year he went to Ford. For the Earle MacPherson Ford participated in the development of new small Ford called the Vedette. Although Ford Vedette not self-supporting body as the Chevrolet Cadet, Macpherson managed to incorporate the suggestions and Ford Vedette was the first car with MacPherson-type axle.