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Topic: Torque steering

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	Torque steering - Wikipedia, the free encyclopedia
		Torque steering is an effect in front wheel drive cars caused by large amounts of torque affecting steering in such a way as to make the front wheels "squirm" (oscillate) from side to side under heavy acceleration, noticeable to the driver by the steering wheel being tugged back and forth by the wheels.
		Torque steer is mainly caused by uneven half shafts between the transaxle and wheels.
		Torque steer can also be caused when the steering axis of the wheel does not pass through the center of the contact point, where the tire meets the ground; i.e.
	en.wikipedia.org /wiki/Torque_steering (482 words)

	U.S. Patent: 5020616 - Power steering apparatus - June 4, 1991
		When the driver of a vehicle operates the steering wheel so as to steer the vehicle to the right or left from its neutral or straight-running state, the steerable wheels are subjected to resistive forces acting thereon from the road surface in the direction to resist the steering motion of the driver.
		The power steering apparatus illustrated is of a so-called safety steering wheel structure which is adapted to absorb any excessive impact acting on a steering wheel in the axial direction of a steering column for protecting the driver of a vehicle in the event of a collision.
		The torque sensor 4 for detecting steering torque comprises a sleeve 40 which is loosely fitted over the output shaft 12b, and a potentiometer installed on the sleeve 40 in such a manner that it provides an output voltage which varies with the amount of relative displacement between the input and output shafts 12a, 12b.
	www.everypatent.com /comp/pat5020616.html (5058 words)

	Flo Draulic Controls Catalogue - Orbital Motors & Steering Units - Danfoss (Site not responding. Last check: 2007-10-05)
		When the steering wheel is turned, the oil flow is divided in the Flow-amplifier in such a way as to ensure that the necessary oil flow is led to the steering system.
		Via a steering column the steering unit is connected to the steering wheel of the vehicle.
		When the steering wheel is turned, oil is directed from the steering system pump via the rotary valve and rotary meter to the cylinder ports L or R, depending on the direction of turn.
	www.flodraulic.com /flodraulic/products/dan_orbital.htm (788 words)

	Steering wheel torque-based detection of misalignment of a vehicle's steering system - Patent 6574539
		A steering wheel torque sensor generates a wheel torque signal indicative of the torque applied to the steering wheel by the driver.
		The predetermined limit to the Steering Wheel Torque Sensor signal is a value such that significant or objectionable driver effort is required to induce a torque at the steering wheel when the vehicle is traveling in a straight line.
		If the Steering Wheel Torque (22) is substantially beyond zero, the driver is imputing a torque to the steering wheel in order to travel in a straight line, and thus there may be a misalignment condition in the vehicle (10).
	www.freepatentsonline.com /6574539.html (3627 words)

	Electric Power Steering
		Inputs from the steering sensor are digested by a microprocessor control unit that also monitors input from the vehicle's speed sensor.
		If the steering wheel is turned and held in the full-lock position and steering assist reaches a maximum, the control unit reduces current to the electric motor to prevent an overload situation that might damage the motor.
		The NSX electronic steering control unit is capable of self-diagnosing faults by monitoring the system's inputs and outputs, and the driving current of the electric motor.
	www.nsxprime.com /FAQ/Technical/eps.htm (627 words)

	Front Suspension Info (Site not responding. Last check: 2007-10-05)
		Steering is push-pull variety and a torque rod is used to control axle roll during hard braking.
		When lift is added such that the draglink is no longer parallel to the ground, the steering geometry of the truck is altered and you may find that the truck may wander somewhat on uneven roads.
		When the stock steering system is used with a long travel front suspension and/or used for hard core wheeling, there is a risk that the driver side knuckle steering arm will eventually break due to long term stress.
	www.mindspring.com /~jayk3/toyota/frontaxle.htm (3756 words)

	ACURA MDX . ORG - Torque steering wheel jerk (Site not responding. Last check: 2007-10-05)
		Torque steer was one of the major reasons I got rid of the 300M.
		Of course my torque settings in the struts etc. may have been set slightly on the loose side, it was checked once before in examining the occaisional thud others have had so nothing was real loose, but they did not tighten to the new factory specs on that visit.
		I know that the MDX literature mentions that torque steer is not a problem as power is delivered to the rear wheels during hard acceleration.
	www.acuramdx.org /forums/showthread.php?threadid=3523 (668 words)

	Electronic Power Steering
		A "steering sensor" is located on the input shaft where it enters the gearbox housing.
		The steering sensor is actually two sensors in one: a "torque sensor" that converts steering torque input and its direction into voltage signals, and a "rotation sensor" that converts the rotation speed and direction into voltage signals.
		The electronic steering control unit is capable of self-diagnosing faults by monitoring the system's inputs and outputs, and the driving current of the electric motor.
	www.indiacar.com /infobank/epc.htm (524 words)

	AutoLab
		Aside from the steering gear itself, there are three main components to electric power steering: a control unit, a motor and one component that's new to the automotive world -- a steering wheel torque sensor.
		The torque sensor is the heart of the system and is one of the most innovative electronic devices we've seen in recent years.
		In a normal rack-and-pinion steering gear, the pinion shaft is all one piece, with the steering column connected to one end and the pinion gear attached to the other.
	www.egr.msu.edu /autoweb/Class/Proj_2001/backlash/I_bginformation.htm (2532 words)

	Electric power steering control apparatus - usptntsrv
		A road surface reaction torque detector has a low-pass filter element whose time constant is determined in accordance with a vehicle speed that is detected by a vehicle steed detector and a motor rotation speed that is detected by a motor rotation speed detector.
		A road surface reaction torque estimation value is obtained in such a manner that the road surface reaction torque detector performs low-pass filter processing on steering shaft reaction torque signal that is outputted by a steering shaft reaction torque signal outputting means.
		Among conventional electric power steering control apparatus is one disclosed in JP-A-2001-239951 in which one or more stages of first-order low-pass filters are formed to estimate road surface reaction torque and the time constants of the low-pass filters are arranged in accordance with the steering speed.
	www.uspatentserver.com /686/6863150.html (337 words)

	Torque Steer (Site not responding. Last check: 2007-10-05)
		I get the impression that torque steer is a catch-all term for anything that might transmit force back to the driver through the steering mechanism during acceleration.
		Suppose for example that the steering axis, that axis about which the wheel is turned in steering, did not pass through the center of the contact patch between the tire and the road.
		Possibly the steering axis shifts a bit during acceleration and that shift is mitigated by the added stiffness of a short shaft.
	www.mcasco.com /qa_ts.html (574 words)

	Steering (Site not responding. Last check: 2007-10-05)
		If you reach the maximum torque figure of 36 ft-lb (5 m-kg) before the hole and slot line up, loosen the nut and torque it to 22 ft-lb (3 m-kg) and begin the process again.
		When alignment is made and the applied torque does not exceed the maximum limit, install the cotter pin and fold back its ends 18 Your front wheels are now only in approximate alignment.
		If you are removing the steering gear assembly for purposes of replacement, you must purchase the entire steering gear assembly as a unit.
	www.porsche-club.ru /Tech/repair/Haines/08_Steering.htm (3203 words)

	Tim's Opel GT Site - Front Suspension (page 3)
		Reconnect shock absorber to the lower control arm and torque to 30 lb.
		Slightly lower jack so that spring and lower control arm assembly is removed from the front cross member and steering knuckle.
		Torque values must be used as specified during reassembly to assure proper retention of these parts.
	theopelgtguy.tripod.com /id609.htm (956 words)

	An electric challenge to hydraulic steering - 6/1/1998 - Design News (Site not responding. Last check: 2007-10-05)
		Attached to the steering column, the self-contained unit is said to be easy to install and particularly cost-effective on smaller vehicles.
		Torque applied to the steering wheel creates a relative movement between the two discs.
		These are electro-hydraulic steering systems which use an electric motor to drive the hydraulic pump rather than driving it off the engine.
	www.designnews.com /article/CA110096.html (1525 words)

	Tiller Steering assist
		Generally, the friction or steering dampeners consist of a lever at the base of the tiller handle, that when rotated will tighten a rubber or felt pad to the friction plate to help keep the engine from turning freely.
		The steering torque is now lessened, but the operator must now force the engine to turn because of the steering dampeners.
		Because of the long distances tournament anglers must go to be competitive the tiller steered boat along with it’s steering torque has just about vanished from the tournament circuits.
	www.enginesteer.com /power-tiller-steering.shtml (543 words)

	February 2001 (Site not responding. Last check: 2007-10-05)
		Torque steer is the tendency of a high-powered, front-wheel-drive car (such as a turbocharged Saab 9-3 or 9-5) to pull to one side under hard acceleration.
		While torque steer is a shortcoming of Saabs, it doesn't make them unsafe to drive — and you'll quickly adjust to the personality of a Saab.
		The clunking in the steering wheel [of your Sierra] is the steering knuckle.
	www.edmunds.com /news/column/letters/45240/article.html (3242 words)

	torque steering - Car Forums and Automotive Chat
		i was coming out of a turn i stomped the gas and the steering wheel kept trying to turn itself straight, making my turn wider than i was aiming.
		Torque steering is a trait of FWD vehicles..just can't image a Cavy having that much torque :evillol:
		I doubt you'd notice it much in a 4 cyl though unless you were to build it up to have 170lb of torque or so.
	www.automotiveforums.com /t498493-torque_steering.html (356 words)

	1994 Altima - Steering and Torque related problem - Car Forums
		The description: At any speed, any weather condition (although worse when cold) when the vehicle is changing the torque output, most often when changing gears, the steering will jerk.
		I'm basing that last part on the experience that if you are not touching the wheel when the "steering orientation" changes, the car doesn't jerk direction quite so bad.
		During the change of steering orientation, the wheel might travel a 1.5 hour increment - if we were to use a clock for reference.
	www.car-forums.com /talk/showthread.php?t=8917 (617 words)

	Acura TL Community - Type-S Torque Sensitive power steering
		I assume at low engine torque times, the power assist will be high, and then at high torque times it will be less assisted.
		The torque-sensing is the torque you the driver is applying to the steering wheel-not the engine torque.GM calls their version Magasteer.
		The Accord's power assist is steering-torque sensitive; hydraulic boost is applied to the system in direct proportion to the amount of force (torque) created between the tire and the road as the wheel is steered.
	tl.acurazine.com /forums/showthread.php?t=10975 (524 words)

	Power Steering...
		-Now rotate the steering box until their is least amount of angle in the rubber joint in the Chevy steering shaft.
		Where the frame is completely boxed, drill a larger diameter hole on one side so that it will allow your pipe to slide in until it hits the other side of the frame.
		To find the actual maximum torque output, the driver input also needs to be added.
	www.menet.umn.edu /~vandeven/ps.htm (1941 words)

	Eaton Product Literature Library > Hydraulic Components > Char-Lynn® Steering
		Eaton’s new Series 10 steering units are a blend of all the capabilities of the previous Standard and Metric Steering units with some new, exciting features.
		Literature ID The dual displacement steering control unit allows manufacturers of off road vehicles to retain manual steering capabilities while reducing the number of components in their system.
		These torque generators providing power assist for steering, also eliminating the large hand wheels on gate valves, and providing powerful rotary motion with effortless manual rotary input on numerous other applications.
	hydraulics.eaton.com /products/steer_main.htm (1368 words)

	Power Tiller Steering: Engine Steer Corporation
		With the installation of Power Tiller Steering you are able to go to your favorite fishing hot Spots ten or more miles across a lake or down a river and back without the worry of a sore arm.
		As the trend for higher horsepower outboards increase, the trend for tiller steered boats remains slow.
		A system had to be found to overcome the undesirable effects of steering torque.
	www.enginesteer.com (618 words)

	JR Radios - Z590M Torque Race Servo: Metal Gear
		No longer do you have to be a highly-competitive racer to justify the expense of a high-torque steering servo with metal gears.
		JR’s new Z590M Sport Torque Racing Servo provides the sport crowd with an impressive 85 oz/in of torque and a virtually indestructible solid metal gear train for just $40.
		Now you can beef up the steering on your ready-to-run truck or give your sport sedan laser precise steering control without leaving a major hole in your wallet.
	www.jrradios.com /Products/Default.aspx?ProdID=JRPSZ590 (88 words)

	Electric power steering control apparatus (US5878360)
		a steering torque sensor for detecting a steering torque of a steering system of a vehicle and generating a corresponding output signal;
		motor drive means for driving said electric motor in a direction of reducing said driver's steering force according to at least the output signal of said steering torque sensor;
		control means for alternatively operating said motor drive means to drive said motor and said motor rotational-speed estimating means to estimate the motor-rotational speed when said steering torque is less than a predetermined torque value, so that said estimated rotational speed of said motor does not exceed a predetermined speed value.
	www.delphion.com /details?pn10=US05878360 (229 words)

	Florida Boating License and Boat Safety Course - Engine Performance (Site not responding. Last check: 2007-10-05)
		When you trim your outboard engine either “in” or “out,” you may feel a pull on the steering wheel either to the right or left.
		If the steering pull grows beyond a slight pull, an accidental release of the steering wheel can cause the powerboat to go into a sharp turn and occupants could be tossed around the boat or thrown overboard.
		Note that the propeller shaft, which connects the propeller to the drive shaft, is parallel to the water’s surface
	www.boat-ed.com /fl/course/p3-13_boatperform.htm (204 words)

	Good Higher performance steering servo for Maxx
		The only suggestion I have is to go with a proline steering kit or at the very least a Kimborugh $6 servo saver if you put in any hi-torque servo.
		It is a spring loaded servo horn which screws right onto the servo, and you screw your steering linkage right onto it.
		The ones there are pink with the part that connects to your steering arm looking like a triangle kinda..but not really...however the LXS362 should work since it says for Hitec.
	www.rcuniverse.com /forum/m_1667596/mpage_1/key_/tm.htm (1624 words)

	Sensor Developments Inc., Steering Effort Sensor featuring torque, angle, and rate outputs, low mass, quick ...
		Sensor Developments Inc., Steering Effort Sensor featuring torque, angle, and rate outputs, low mass, quick installation, and digital FM telemetry.
		Our sensors are used to evaluate engines, drive-trains, steering, suspensions, brakes, tires, power windows, sunroofs, aircraft controls, spot welders, power tools and many others.
		The system features your choice from one of three torque capacities including 200, 500, and 1,000 in-lbs, a digital FM system to transmit and receive the torque signal, and encoder which directly attaches to the windshield and is driven with a gear drive chain.
	www.sendev.com /pr_steereftsen.html (158 words)

	Japanese Patent 3715858 B2 - Electromotion power steering device (Site not responding. Last check: 2007-10-05)
		which detects steering torque signal which is gained by the steering system of vehicle
		With torque signal memorizing means which memorizes steering torque signal which was detected at above steering torque detection means
		It does steering torque signal which is along left curve and is handed over from above torque correction grant determining means of time which is being done a scamper with steering torque signal Tl and is in the confusion, so it is torque signal correction means.
	cxp.paterra.com /jppatent3715858.html (244 words)

	steering knuckle torque specs - Team Camaro Tech
		Can anyone tell me what the torque specs are for the steering knuckle to
		Also what are the torque specs on the caliper bolts (allen head)?
		He is talking about the top spindle/caliper bolt and one of the bolt-on steering arm bolts..
	www.camaros.net /forums/showthread.php?t=58647 (229 words)

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