Many modern steering columns still have the same ability to collapse and absorb energy. Energyabsorbing steering column passenger guard door locks safety door latches and stamped steel hinges folding seat back latches standard features. Interiorimpact energy absorbing devices augment restraint systems by absorbing energy from the occupant while minimizing injuries. The steering wheel must therefore yield during the crash, preferably through an energy absorbing mechanism. Click download or read online button to get crash 2 user s manual book now. Energy absorbing steering columns were introduced for. The new active energyabsorbing steering column utilizes plastic in both an energyabsorbing. Other articles where energy absorbing steering column is discussed. Rigid steering column figure 4 the classic design is a rigid steering column. Steering column components end use and function the steering column componentsrake cam, lefthand inner cam, retainer guide, righthand rake teeth energyabsorbing eccentric strap cam, column mounting insert teeth, and lefthand rake teethare all part of the steering column in the chevrolet colorado and gmc canyon trucks. It tells you how to use your restraint system an energyabsorbing steering column and steering properly to keep you and your passengers as safe as wheel possible. The design of the automobile energy absorbing prevent.
Jim sheas thoughts on replacing an oem energy absorbing, collapsible steering column with an aftermarket steering column i am going to give you jim sheas opinion on this matter. Steering mechanism including controllable impact energy. An energyabsorbing steering column collapses, reducing trauma to a drivers head, neck and breastbone. Each strap has a laterally inner leg and a laterally outer leg. Though the designs for steering columns have varied since their inception, a typical collapsible steering column looks like two interlocking shafts that attach. This work represents the beginning of a long term study concentrating on the design and development of energy absorbing steering. Remove the 2 energy absorbing plates, 2 energy absorbing guides, and 2 break away capsules.
Identifying energy absorbing clips courtesy of toyota motor sales, u. For safety reasons all modern cars feature a collapsible steering column energy absorbing steering column which will collapse in the event of a heavy frontal impact to avoid excessive injuries to the driver. Modeling of an advanced steering wheel and column assembly. Research has been conducted and papers published by b. Energy absorbing columns have to serve two functions. Before such designs were invented, a common feature of driver injury was for the chest to be impaled by the steering column.
Systems approach in development of adaptive energy absorbing. The steering wheels of older cars were attached to a rigid post. Energy absorbing steering column chrysler corporation. Instrument panels, windshield glass, and other surfaces that may be struck by an unrestrained occupant may be designed to absorb energy in a controlled manner.
Audi has a retractable wheel system called proconten. Jun 16, 2011 its been my experience that no special precautions are required at all for a typical energy absorbing or collapsible steering column. Page 15 energyabsorbing steering column engineered rear crumple zone engineered front crumple zone antilock braking system abs sideguard door beams electronic stability control esc all speed traction control. Energy absorbing steering columns were first developed. Design and analysis of an impact energy absorbing steering. Request pdf modeling of adaptive energy absorbing steering columns for dynamic impact simulations the objective of this paper focused on the modeling.
The design of the automobile energy absorbing prevent injuries. Numerical study of a novel builtin energyabsorbing. The steering column is a device intended primarily for connecting the steering wheel to the steering mechanism and allows the transfer of the drivers input torque from the steering wheel. The energy absorbing hydro pneumatic mechanical device absorbs 50 percents of the caras kinetic energy during 0. Detailed description of a preferred embodiment a steering column assembly 3 is shown in fig. First, they must stop the steering wheel and column from being pushed to the rear as the front of the car is crushed in an impact. Design, analysis and optimization of collapsible steering. The energyabsorbing steering column, introduced in 1967, is a good example of such a device. Types of steering column the following design principles are used in general for steering columns. However, kia makes no guarantees or warranties, either expressed or implied, with respect to the accuracy of the content presented. Application of rigid polyurethane foam to the energyabsorbing steering column application of rigid polyurethane foam to the energyabsorbing steering column kurauchi, t. Design and analysis of an impact energy absorbing steering system.
Location of ignition switch securing screw arrowed screw slackened and switch removed the loose plate at the bottom of the column, shown as part of the assembly in parts lists. The steering column on every challenger is designed to deform and deflect away from the drivers seat. This paper presents the final phase of a study to develop the modeling methodology for an advanced steering assembly with a safetyenhanced steering wheel and an adaptive energy absorbing steering column. Page 15 energyabsorbing steering column engineered rear crumple zone engineered front crumple zone antilock braking system abs. The column also absorbs any force generated if the drivers body impacts on the steering wheel. Application of rigid polyurethane foam to the energy. Crash 2 user s manual download ebook pdf, epub, tuebl, mobi. Energy absorbing hydro pneumo mechanical mechanism to. An energy absorbing steering column substantially as described with reference to figures 4 to 6 of the accompanying drawings. Shear capsule, if so equipped, on energyabsorbing steering column is separated from bracket, there is general looseness of the steering wheel and column or the steering wheel and column can be moved as a unit. View and download dodge challenger overview online.
The rack meshes with the teeth of a small pinion at the end of the steering column. This paper proposes a novel builtin energyabsorbing ea component which causes the impact load transmitted to the occupant to vary in accordance with. However, they now have the ability to collapse from the force of the driver impacting the steering wheel airbag. Each strap has a laterally inner leg and a laterally outer leg secured to the inner leg by one or more rivets. An energy absorbing steering column for a motor vehicle having a rotatable steering shaft means, a steering wheel connected to said shaft means, said shaft means being constructed to be connected to a steering gear, a tubular housing surrounding said shaft means, bracket means engaging said tubular housing at a location spaced from said steering wheel and constructed to support said.
What are the benefits of an energy absorbing steering column. A collapsible steering column is a mechanism that is used to transfer energy from the steering wheel into the steering gear box, which transfers energy to turn the wheels of a vehicle. This paper proposes a novel builtin energyabsorbing ea component which causes the impact load transmitted to the occupant to vary in accordance with the crash severity and the occupant mass. The paper includes a description of the initial concept, the development stages of. Up to now, steering column in crash analysis had no way to describe these collapse or slip by the axial and lateral forces from driver. Steering systems steering column in addition to this, the steering column provides a suitable location for multifunctional switches.
Passive safety seating exterior features interior features. Most modern vehicles use a collapsible or energy absorbing steering column. The primary purpose of the steering system is to allow the driver to guide. Field experience with the energy absorbing steering column. Download citation on jan 1, 2018, varun galgali and others published design and. Energy absorbing steering system how it works a steering system of automobiles for absorbing impact force, which comprises a steering tube, connected to a steering handle, having a plurality of fixing openings for fixing balls therein. In the first phase of the study, ten component and subsystem tests were conducted to develop the modeling methodology of an adaptive energy absorbing steering column assembly. To provide information for modeling methodology development, component and subsystem. Download crash 2 user s manual or read online books in pdf, epub, tuebl, and mobi format. Understanding the energy absorption characteristics of automotive components is necessary for the development of safe and crashworthy vehicles. The energyabsorbing steering column, as it was designed and put into production in the 1967 gm vehicles, is shown in fig. Energyabsorbing columns have to serve two functions. An energy absorbing mechanism for collapsible vehicle steering column includes a deformable wire connected between the fixed and movable column members.
Instrument panels, windshield glass, and other surfaces that may be struck. Special steering column have been employed in many car which provide safety and ease of operation to the driver. Show full abstract the injury to the driver during a car meets accident by collapse particular part of system. The steeringwheelsteeringcolumn assemblies fitted in automobiles must have a high energy absorption performance in order to minimize occupant chest injuries in the event of a collision. View and download dodge journey 2009 owners manual online. Energy absorbing steering system by haley warren on prezi. An energyabsorbing device for a steering column of an automotive vehicle comprising energyabsorbing straps on opposite sides of the steering column. Kia makes reasonable efforts to ensure that information contained in its press releases is accurate at the time of posting. An energy absorbing device for a steering column of an automotive vehicle comprising energy absorbing straps on opposite sides of the steering column. The modeling of an advanced steering assembly, with a safetyenhanced steering wheel and an adaptive energy absorbing steering column for frontal and side impact simulations, was developed in the second phase of the study and will be presented separately 1. The steering wheel has a rigid connection to the steering shaft which is usually a singlepiece item. The column is constructed to absorb energy by angularly displacing the upper column portion and buckling the bendable section when an impact force is exerted on the steering wheel. Eascenergy absorbing steering column is a kind of steering column which minimizes the injury of the driver during a car accident by collapse or breaking particular part of system. Speed sensitive steering there is more assistance at lower speeds and less at higher speeds.
The intent was to absorb the collision forces and prevent the steering shaft and steering wheel from being forced toward the driver. A shock absorbing steering apparatus having 1p a steering column having a steering shaft pivotably supported thereon, a distance bracket secured to said column, and a column bracket for fixing said column to a vehicle body through said distance bracket characterized in an shock energy absorbing ushaped plate having a first and second plate portions and a bent portion integrally connecting. The other end is fitted with two balls to which the ends of the divided track rods are attached. Modeling of adaptive energy absorbing steering columns for. An energyabsorbing steering column and steering properly. Steering collision absorbing energy and preventing injuries ug. A bearing 5 supports the upper end of the steering shaft assembly within the outer jacket. This site is like a library, use search box in the widget to get ebook that you want. Replacing the oem ea column with an aftermarket design.
The modeling of an advanced steering assembly, with a safetyenhanced steering wheel and an adaptive energy absorbing steering column for frontal and side impact simulations, was developed in the. Us4445708a energy absorbing steering column for vehicles. Energyabsorbing steering column a lower cowl brackets. T h e incar portion of the energyabsorbing column compressed. For passenger cars built before the 1960s, the steering column was designed to control vehicle direction with a simple rigid rod. An energy absorbing steering column collapses, reducing trauma to a drivers head, neck and breastbone. The first was to reduce injury associated with the steering wheel and column by providing a controlled absorption of the kinetic en. Moreover, rising purchasing power of the consumers is also driving the steering columns system market.
Upon impact, the steering wheel impacts a drivers face and chest, causing injuries ranging from bruising to crushing or puncturing. For the covering abstract of the conference see hs036 716. Adaptive energy absorbing steering columns by virtual engineering. Steering is the collection of components, linkages, etc. Noncollapsible steering columns very often impale drivers in frontal crashes. In this paper, a case study is performed on an existing steering column of maruti800 passenger car. The automotive steering column is a device intended primarily for connecting the steering wheel to the steering mechanism. Diravi is the first commercially available variable power steering system introduced by citroen. This research experimentally and numerically studies the energy absorption performance of a steering wheel armature in contact with a deformable chestform bodyform during a collision. An energy absorbing steering column substantially as described with reference to figures 7 and 8 of the accompanying drawings. Other articles where energyabsorbing steering column is discussed.
A force generator is operable upon impact to apply. Axial impact resulted in almost negligible wheel deformation and the column was the energy absorbing component. The car safety is important for sustainable development of contemporary automobile industry, the researches of the automotive active and passive safety have been universal concern and attention, when the vehicle frontal collision occurred, and the steering wheel and rigid steering column is the main components to make the driver be injured. Energy absorbing steering columns were introduced for the 1967 model year on all gm passenger cars.
The energy absorbing steering column, introduced in 1967, is a good example of such a device. Us5755461a energy absorbing device for a steering column. The data collected and the design criteria recommended have more or less been ignored by the automotive industry to this very day. Energy absorbing steering column a lower cowl brackets. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Energy absorbing steering column is a kind of steering column which minimizes.
This foam has been applied to the automobile steering column by forming it into a cylindrical shape and. A steering column may also perform the following secondary functions. Energy absorbing plate tension spring column upper clamp energy absorbing clip energy absorbing plate guide taperedhead bolt column tube lower column tube attachment column tube support ignition switch turn signal bracket main shaft bushing snap ring 2. The growth of steering columns system market is driven as there is favorable growth in the automotive industry is a major factor which will boost the steering columns system market. Unit one steering system design 45 a4u1l3 spur and helical. Airbags are first removed from vehicles so equipped by procedures specific to the vehicle or manufacturer. All gm passenger car steering columns have been collapsible and energy absorbing since that time. This paper describes the development of the new energy absorbing steering column which is standard equipment on all 1967 general motors and several competitive cars. An energy absorbing steering column for a motor vehicle having a tubular jacket with a plastically deformable, bendable section. Energyabsorbing steering column zone body construction with front and rear crumple zones hood buckling creases and safety stops body side reinforcements shift interlock system tire pressure monitoring system tpms s security tamper proof door lock key cylinder steering wheel locks when key is removed vehicle security system immobilizer. In addition to this, the steering column provides a. A collapsible steering column for automobiles including an energy absorber having rollable deformer balls with the balls being active throughout all loading conditions of the column to effectively absorb energy for all load conditions from light load to maximum load for the full column stroke. May 30, 1972 a steering column assembly 3 is shown in fig. An experimental and finite element investigation into the.
Barenyi as early as 1925 on the principles of impact absorbing steering systems. In this paper, a case study is performed on an existing steering column of passenger car. For our test conditions and the components we studied, off axis impact resulted in initial steering wheel deformation with the wheel and column sharing energy absorption. The straps are made of relatively stiff, bendable, flexible strip material. Plastic can be incorporated in energy absorbing steering columns to. Interiorimpact energyabsorbing devices augment restraint systems by absorbing energy from the occupant while minimizing injuries. Up to now, steering column in crash analysis had no way to describe these collapse or. Energy absorbing hydro pneumo mechanical mechanism to enhance. An exception is the case of rail transport by which rail tracks combined together with railroad switches and also known as points in british english provide the steering function. Energy absorbing steering column passenger guard door locks safety door latches and stamped steel hinges folding seat back latches standard features. Easc energy absorbing steering column is a kind of steering column which minimizes the injury of the driver during a car accident by collapse or breaking particular part of system. A centrifugal regulator driven by the secondary shaft of the gearbox gives a proportional hydraulic pressure to the speed of the car this pressure acts on a cam directly revolving according to the steering.
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