automotive steering


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automotive steering

[¦ȯd·ə¦mōd·iv ′stir·iŋ]
(mechanical engineering)
Mechanical means by which a driver controls the course of a moving automobile, bus, truck, or tractor.

Automotive steering

The means by which a motor vehicle is controlled about the vertical axis. It allows the driver to control the course of vehicle travel by turning the steering wheel, which turns the input shaft in the steering gear. The steering system has three major components: (1) the steering wheel and attached shaft in the steering column which transmit the driver's movement to the steering gear; (2) the steering gear that increases the mechanical advantage while changing the rotary motion of the steering wheel to linear motion; and (3) the steering linkage (including the tie rod and tie-rod ends) that carries the linear motion to the steering-knuckle arms. See Mechanical advantage

When the only energy source for the steering system is the force that the driver applies to the steering wheel, the vehicle has manual steering. When the driver's effort is assisted by hydraulic pressure from an electric or engine-driven pump, or by an electric motor, the vehicle has power-assisted steering, commonly known as power steering. Power steering allows manual steering to always be available, even if the engine is not running or the power-assist system fails.

Two types of automotive steering gears are rack-and-pinion and recirculating-ball. In a rack-and-pinion steering gear (see illustration), a tubular housing contains the toothed rack and a pinion gear. The housing is mounted rigidly to the vehicle body or frame to take the reaction to the steering effort. The pinion gear is attached to the lower end of the steering shaft, and meshes with rack teeth. Tie rods connect the ends of the rack to the steering-knuckle arms at the wheels. As the steering wheel turns, the pinion gear moves the rack right or left. This moves the tie rods and steering-knuckle arms, which turn the wheels in or out for steering.

Speed-sensitive rack-and-pinion power-steering system that provides variable assistenlarge picture
Speed-sensitive rack-and-pinion power-steering system that provides variable assist

In a recirculating-ball steering gear, a worm gear is attached to the lower end of the steering shaft. The worm gear turns inside a ball nut which rides on a set of recirculating ball bearings. These ball bearings roll in the grooves in the worm and inside the ball nut. Gear teeth on one outside flat of the ball nut mesh with a sector of teeth on the output or sector shaft to which the pitman arm is attached. As the steering wheel is turned, the rotary motion of the worm gear causes the ball nut to move up or down, forcing the sector shaft and pitman arm to rotate. This action moves the steering linkage to the right or left, turning the front wheels in or out for steering. See Antifriction bearing, Gear

References in periodicals archive ?
Major Key Points of Global Automotive Steering Sensors Market *Global Automotive Steering Sensors Market - Methodology and Scope *Global Automotive Steering Sensors Market - Trends *Global Automotive Steering Sensors Market - Industry Analysis *Global Automotive Steering Sensors Market - By Type *Global Automotive Steering Sensors Market - By Technology Type *Global Automotive Steering Sensors Market - By Technology Type *Global Automotive Steering Sensors Market - Competitive Landscape *Global Automotive Steering Sensors Market - Company Profiles *Global Automotive Steering Sensors Market - Appendix
Almost all models have some infotainment system today which necessitates the need for an automotive steering roll connector.
These extraordinary effects arose from the first-time full consolidation of Automotive Steering and BSH Hausgerte, impairments, and provisions in conjunction with legal risks.
[ClickPress, Sat Apr 13 2019] FactMR has actively published a new research study titled "Automotive Steering System Market Projected to Witness Vigorous Expansion by 2017 to 2022 | Key Players are NSK Ltd., Mitsubishi Electric Corporation, China Automotive Systems Inc., etc." to its broad online database.
[UKPRwire, Wed Dec 19 2018] Following the CES 2018, General Motors presumptuously declared that the company will eliminate the automotive steering system from the autonomous vehicle design by 2019 end.
[UKPRwire, Tue Dec 18 2018] An insightful study, titled " Automotive Steering Systems Market " has been freshly broadcasted to the vast research repository of Market Research Reports Search Engine (MRRSE).
[ClickPress, Mon Dec 17 2018] Following the CES 2018, General Motors presumptuously declared that the company will eliminate the automotive steering system from the autonomous vehicle design by 2019 end.
He will also assume responsibility for the new Automotive Steering division.
[USPRwire, Mon Dec 17 2018] An insightful study, titled " Automotive Steering Systems Market " has been freshly broadcasted to the vast research repository of Market Research Reports Search Engine (MRRSE).
An automotive steering system acts as a direct line of control and communication between the driver and the vehicle.
[USPRwire, Mon Dec 17 2018] Following the CES 2018, General Motors presumptuously declared that the company will eliminate the automotive steering system from the autonomous vehicle design by 2019 end.
Technavio's market research analyst predicts the global automotive steering system market to grow at a steady CAGR of more than 8% by 2020.

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