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Power steering

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mass-produced passenger cars appeared on the Suzuki Cervo in 1988. However, this simple method was not widely adopted by other automakers in the initial years due to the unnatural steering feel of the motor caused by the inertia at the time of rapid steering for danger avoidance in slower speed driving, as well as at the time of faster speed driving in which the electromagnetic clutch makes the steering force smaller, returning to the manual steering mode. In the year 1990, a direct full control system of a rack assist without a clutch was put into practical use in the Honda NSX (initially installed in automatics only). Since then, there has been a transition of trend from brush-attached motors to brushless motors in the rack type for ordinary vehicles and this method has become the mainstream.
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response to variable-rate and variable-damping suspension systems, optimizing ride, handling, and steering for each vehicle. This new technological feature also gave engineers the ability to add new driver assistance features. This includes features such as lane assist, wind drift correction, etc. On Fiat group cars the amount of assistance can be regulated using a button named "CITY" that switches between two different assist curves, while most other EPS systems have variable assist. These give more assistance as the vehicle slows down, and less at faster speeds.
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artificial steering feel, there is a separate hydraulically operated system that tries to turn the steering wheel back to centre position. The amount of pressure applied is proportional to road speed, so that at low speeds the steering is very light, and at high speeds it is very difficult to move more than a small amount off centre.
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required to steer. This heavy effort is similar to that of an inoperative hydraulic steering assist system. Depending on the driving situation, driving skill and strength of the driver, steering assist loss may or may not lead to a crash. The difficulty of steering with inoperative power steering is compounded by the choice of
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In this power steering system, the force steering the wheels comes from the car's high pressure hydraulic system and is always the same no matter what the road speed is. Turning the steering wheel moves the wheels simultaneously to a corresponding angle via a hydraulic cylinder. In order to give some
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This system should not be confused with variable assist power steering, which varies steering assist torque, not steering ratios, nor with systems where the gear ratio is only varied as a function of steering angle. These last are more accurately called non-linear types (e.g. Direct-Steer offered by
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Other electric power steering systems (including 4WS) later appeared on the Honda NSX after 1990, the Honda Prelude and the Subaru SVX in 1991, the Nissan 300ZX (Z32; after the Version 3 onwards), Silvia, Skyline, and the Laurel in 1993, the MG F, the FIAT Punto Mk2 in 1999, the Honda S2000 in 1999,
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In 1986, NSK put the world’s first electric power steering system for battery forklifts into practical use. In 1988, Koyo Seiko (currently JTEKT) and NSK co-developed a column system exclusively for minicars sold only in the domestic market of Japan. The first-ever electric power steering system for
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add controlled energy to the steering mechanism, so the driver can provide less effort to turn the steered wheels when driving at typical speeds, and considerably reduce the physical effort necessary to turn the wheels when a vehicle is stopped or moving slowly. Power steering can also be engineered
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A mechanical linkage between the steering wheel and the steering gear is retained in EPS. In the event of component failure or power failure that causes a failure to provide assistance, the mechanical linkage serves as a back-up. If EPS fails, the driver encounters a situation where heavy effort is
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because there is no belt-driven hydraulic pump constantly running, whether assistance is required or not, and this is a major reason for their introduction. Another major advantage is the elimination of a belt-driven engine accessory, and several high-pressure hydraulic hoses between the hydraulic
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at the lower end of the steering column. As the steering wheel rotates, so does the steering column, as well as the upper end of the torsion bar. Since the torsion bar is relatively thin and flexible, and the bottom end usually resists being rotated, the bar will twist by an amount proportional to
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to the steering gear, which in turn steers the roadwheels. The steering wheel operates valves to control flow to the cylinder. The more torque the driver applies to the steering wheel and column, the more fluid the valves allow through to the cylinder, and so the more force is applied to steer the
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The steering booster is arranged so that should the booster fail, the steering will continue to work (although the wheel will feel heavier). Loss of power steering can significantly affect the handling of a vehicle. Each vehicle owner's manual gives instructions for inspection of fluid levels and
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Since the hydraulic pumps are positive-displacement type, the flow rate they deliver is directly proportional to the speed of the engine. This means that at high engine speeds the steering would naturally operate faster than at low engine speeds. Because this would be undesirable, a restricting
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A study in 1999 on the perceptual fidelity of steering force feedback, found that ordinary real-world truck and car drivers naturally expect an increase in feedback torque as speed increases, and for this reason early forms of power steering, which lacked such effect, were met with disapproval.
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exerted inside the steering column, and a computer module applies assistive torque via the motor, which connects either to the steering gear or steering column. This allows varied amounts of assistance to be applied depending on driving conditions. Engineers can therefore tailor steering-gear
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Some construction vehicles have a two-part frame with a rugged hinge in the middle; this hinge allows the front and rear axles to become non-parallel to steer the vehicle. Opposing hydraulic cylinders move the halves of the frame relative to each other to steer.
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the applied torque. The difference in position between the opposite ends of the torsion bar controls a valve. The valve allows fluid to flow to the cylinder which provides steering assistance; the greater the "twist" of the torsion bar, the greater the force.
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Other power steering systems (such as those in the largest off-road construction vehicles) have no direct mechanical connection to the steering linkage; they require electrical power. Systems of this kind, with no mechanical connection, are sometimes called
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orifice and flow-control valve direct some of the pump's output back to the hydraulic reservoir at high engine speeds. A pressure relief valve prevents a dangerous build-up of pressure when the hydraulic cylinder's piston reaches the end of its stroke.
52:. These systems have a direct mechanical connection between the steering wheel and the linkage that steers the wheels. This means that power-steering system failure (to augment effort) still permits the vehicle to be steered using manual effort alone. 88:
The first power steering system on a vehicle was apparently installed in 1876 by a man with the surname of Fitts, but little else is known about him. The next power steering system was put on a Columbia 5-ton truck in 1903 where a separate
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Electro-hydraulic power steering systems, sometimes abbreviated EHPS, and also sometimes called "hybrid" systems, use the same hydraulic assist technology as standard systems, but the hydraulic pressure comes from a pump driven by an
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Electric power steering systems use electric motors to provide the assistance instead of hydraulic systems. As with hydraulic types, power to the actuator (motor, in this case) is controlled by the rest of the power steering system.
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Starting in the mid-1950s American manufacturers offered the technology as optional or standard equipment while it is widely offered internationally on modern vehicles, owing to the trends toward
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Some modern systems also include an electronic control valve to reduce the hydraulic supply pressure as the vehicle's speed increases; this is variable-assist power steering.
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that replaced the conventional large steering wheel with two 5-inch (127 mm) rings, a fast 15:1 gear ratio, and an electric hydraulic pump in case the engine stalled.
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with electro-hydraulic power steering. This avoided running hydraulic lines from the engine (which was behind the driver in the MR2) up to the steering rack.
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The system has been used by various automobile manufacturers, and most commonly applied for smaller cars to reduce fuel consumption and manufacturing costs.
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to multiply force applied to the steering wheel inputs to the vehicle's steered (usually front) road wheels. The hydraulic pressure typically comes from a
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and refined the hydraulic-assisted power steering system, but the automaker calculated it would be too expensive to produce. Davis then signed up with
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pump, mounted on the engine, and the steering gear, mounted on the chassis. This greatly simplifies manufacturing and maintenance. By incorporating
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was fitted with a unique Cybrid adaptive electro-hydraulic steering system that changed the level of assistance based on the vehicle's speed.
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under the name "Hydraguide". The Chrysler system was based on some of Davis' expired patents. General Motors introduced the 1952
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Hydraulic power steering systems for cars augment steering effort via an actuator, a hydraulic cylinder that is part of a
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electric power steering systems can instantly vary torque assist levels to aid the driver in corrective maneuvers.
742: 2143: 924: 1790: 114: 1868: 1348: 1237: 529: 499: 2158: 1674: 1308: 510:); a plot of steering-wheel position versus axle steering angle is progressively curved (and symmetrical). 487: 448: 864: 1943: 1590: 1434: 1208:"Honda to Launch S2000 Type V Equipped with the World's First Variable Gear Ratio Steering (VGS) System" 147:
with a power steering system using the work Davis had done for the company almost twenty years earlier.
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Applying driving simulation to quantify steering effort preference as a function of vehicle speed
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introduced the first commercially available passenger car power steering system on the 1951
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One design for measuring the torque applied to the steering wheel has a torque sensor – a
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Device that helps steer vehicles by augmenting steering effort of the steering wheel
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In 1965, Ford experimented with a fleet of "wrist-twist instant steering" equipped
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Okamoto, Kenjiro; Chikuma, Isamu; Saito, Naoki; Miyazaki, Hiroya (1 April 1989).
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for easier steering on heavy vehicles boosted the need for power assistance on
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Vehicle Simulation: Perceptual Fidelity in the Design of Virtual Environments
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has assisted car manufacturers with recalling EPS systems prone to failure.
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in 1970, and was known as 'VariPower' in the UK and 'SpeedFeel' in the U.S.
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to provide some artificial feedback of forces acting on the steered wheels.
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system to alter steering gear ratios and steering assist levels. In 2003,
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Toyota Prius in 2000, the BMW Z4 in 2002, and the Mazda RX-8 in 2003.
341: 273: 2046: 2036: 1958: 1923: 1646: 1610: 1595: 1569: 1500: 1475: 820:. Canadian Intellectual Property Office. 15 June 2015. Archived from 802:. Canadian Intellectual Property Office. 15 June 2015. Archived from 307: 73: 1838: 1523: 1363: 1338: 1155: 1035:"So long, hydraulics - the electronic revolution in power steering" 483: 482:
introduced the "Variable Gear Ratio Steering" (VGRS) system on the
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filed several patents for improvements of power steering with the
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and tank-recovery vehicles for the British and American armies.
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was used to assist the driver in turning the front wheels.
1737: 1293: 1140:"Improvement of Driver's Feel of Electric Power Steering" 1109:"Electric power steering: one good turn deserves another" 491: 1210:(Press release). Honda News. 7 July 2000. Archived from 247: 652:"Driving-gear for motor-carriages - US patent 646477 A" 185:
A power steering fluid reservoir and pulley driven pump
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is a system for reducing a driver's effort to turn a
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is transmitted. Common working liquids are based on
1178:"The present and future of electric power steering" 880:"Rack-and-pinion Steering - How Car Steering Works" 486:and Landcruiser Cygnus, and also incorporated the 474:Type V featured the first electric power variable 226:regular maintenance of the power steering system. 64:" or "steer by wire", by analogy with aviation's " 947:"Will a twist of your wrist steer your next car?" 706: 704: 702: 435:in assisted steering gears vs. fully manual. The 313:In 1990, Toyota introduced its second-generation 189:Hydraulic power steering systems work by using a 2130: 201:driven by the vehicle's engine. A double-acting 699: 1711: 1269: 862:Bertollini, G. P., & Hogan, R. M. (1999) 1236:. CanadianDriver. 2003-06-02. Archived from 1175: 609:. University of Michigan Press. p. 23. 414:instead of a hydraulic system to assist the 388:An EPS module with a partially disassembled 286: 1234:"BMW Â» First Drive: 2004 BMW 5-Series" 603:Wren, James A.; Wren, Genevieve J. (1979). 560: 558: 1718: 1704: 1276: 1262: 868:, (No. 1999-01-0394). SAE Technical Paper. 975: 903:"Power Steering - How Car Steering Works" 818:"Manual and power actuated steering gear" 602: 555: 466:Electrically variable gear ratio systems 383: 279:This system was first introduced in the 180: 1182:International Journal of Vehicle Design 1032: 564: 296:instead of a drive belt at the engine. 113:, an engineer of the truck division of 2131: 671: 442:Electric systems have an advantage in 1699: 1257: 248:DIRAVI variable-assist power steering 156:Canadian Intellectual Property Office 68:". In this context, "wire" refers to 1670: 900: 877: 767: 713:"Mr. Power Steering's Ship Comes In" 710: 261:innovated the now common benefit of 176: 72:that carry power and data, not thin 30:, by using a power source to assist 905:. Auto.howstuffworks.com. p. 4 882:. Auto.howstuffworks.com. p. 2 743:"The Waltham Museum's Hall-of-Fame" 379: 233:" or "oil", is the medium by which 13: 1834:Continuously variable transmission 711:Howe, Hartley E. (February 1956). 675:Light and Heavy Vehicle Technology 638:"Driving-gear for motor-carriages" 422:. Sensors detect the position and 14: 2175: 1637:Automobile auxiliary power outlet 678:. Elsevier Science. p. 521. 567:"Steering: A Century of Progress" 229:The working liquid, also called " 2149:Automotive steering technologies 2113: 2112: 2102: 1679: 1669: 1660: 1659: 1292:Part of a series of articles on 1283: 1085:. 7 January 2015. Archived from 745:. Waltham Museum. Archived from 478:steering (VGS) system. In 2002, 320:In 1994 Volkswagen produced the 1226: 1200: 1176:Nakayama, T.; Suda, E. (1994). 1169: 1131: 1122: 1101: 1071: 1057: 1026: 1000: 969: 939: 917: 894: 871: 856: 842: 828: 810: 792: 1725: 1146:. SAE Technical Paper Series. 1010:. Deylan.co.uk. Archived from 976:Markovich, Alex (April 1965). 761: 735: 672:Nunney, Malcolm James (2006). 665: 644: 630: 596: 541: 1: 1869:Automated manual transmission 1349:Electronic instrument cluster 535: 530:Direct-drive sim racing wheel 1309:Automotive navigation system 1111:. embedded.com. 30 June 2005 768:Lamm, Michael (March 1999). 488:electronic stability control 449:electronic stability control 7: 2154:Vehicle safety technologies 1944:Semi-automatic transmission 1435:Electronic throttle control 901:Nice, Karim (31 May 2001). 878:Nice, Karim (31 May 2001). 513: 404:motor-driven power steering 76:mechanical control cables. 10: 2180: 1781:Internal combustion engine 1481:Automatic vehicle location 1144:SAE Technical Paper 890079 1033:Keebler, Jack (May 1986). 565:Schultz, Mort (May 1985). 251: 83: 2098: 2080:Hybrid vehicle drivetrain 2067: 1982: 1969:Transmission control unit 1909:Limited-slip differential 1874:Electrorheological clutch 1799: 1746: 1733: 1655: 1624: 1578: 1514: 1468: 1407: 1301: 1289: 1065:"Electric Power Steering" 287:Electro-hydraulic systems 1859:Dual-clutch transmission 1008:"The Golf Ecomatic Page" 263:speed sensitive steering 150:Charles F. Hammond from 2164:19th-century inventions 1829:Constant-velocity joint 1314:Automotive night vision 1150:. SAE Technical Paper. 1083:Newsome Melton law firm 770:"75 years of Chryslers" 606:Motor Trucks of America 396:Electric power steering 2144:Automotive accessories 1809:Automatic transmission 957:(4): 83. February 1984 392: 186: 1496:Remote keyless system 927:. CNET. 5 August 2014 848:Alfred T. Lee (2017) 387: 184: 1914:Locking differential 1849:Direct-shift gearbox 978:"Look, Ma-No Wheel!" 137:Chrysler Corporation 2159:American inventions 1939:Preselector gearbox 1919:Manual transmission 1240:on October 16, 2009 1214:on 6 September 2015 272:It was invented by 2085:Electric generator 1990:Wheel hub assembly 1344:Check engine light 1324:Blind spot monitor 393: 301:Mercury Park Lanes 203:hydraulic cylinder 187: 42:electric actuators 2126: 2125: 1879:Epicyclic gearing 1748:Automotive engine 1693: 1692: 1601:Glove compartment 1555:Child safety lock 1014:on 10 August 2011 982:Popular Mechanics 774:Popular Mechanics 723:(2): 161–164, 270 685:978-0-7506-8037-0 571:Popular Mechanics 322:Golf Mk3 Ecomatic 177:Hydraulic systems 163:front-wheel drive 141:Chrysler Imperial 97:Robert E. Twyford 70:electrical cables 2171: 2116: 2115: 2106: 1983:Wheels and tires 1954:Torque converter 1720: 1713: 1706: 1697: 1696: 1683: 1673: 1672: 1663: 1662: 1560:Rear-view mirror 1491:Power door locks 1278: 1271: 1264: 1255: 1254: 1249: 1248: 1246: 1245: 1230: 1224: 1223: 1221: 1219: 1204: 1198: 1197: 1195: 1193: 1173: 1167: 1166: 1164: 1162: 1135: 1129: 1126: 1120: 1119: 1117: 1116: 1105: 1099: 1098: 1096: 1094: 1075: 1069: 1068: 1061: 1055: 1054: 1052: 1050: 1030: 1024: 1023: 1021: 1019: 1004: 998: 997: 995: 993: 973: 967: 966: 964: 962: 943: 937: 936: 934: 932: 921: 915: 914: 912: 910: 898: 892: 891: 889: 887: 875: 869: 860: 854: 846: 840: 839: 832: 826: 825: 814: 808: 807: 796: 790: 789: 787: 785: 765: 759: 758: 756: 754: 739: 733: 732: 730: 728: 708: 697: 696: 694: 692: 669: 663: 662: 660: 658: 648: 642: 641: 634: 628: 627: 625: 623: 600: 594: 593: 591: 589: 562: 553: 552: 545: 498:" system on the 380:Electric systems 199:rotary vane pump 191:hydraulic system 111:Francis W. Davis 99:, a resident of 2179: 2178: 2174: 2173: 2172: 2170: 2169: 2168: 2129: 2128: 2127: 2122: 2094: 2063: 1978: 1974:Universal joint 1904:Hotchkiss drive 1795: 1742: 1729: 1724: 1694: 1689: 1651: 1620: 1574: 1528: 1510: 1464: 1403: 1359:Head-up display 1297: 1285: 1282: 1252: 1243: 1241: 1232: 1231: 1227: 1217: 1215: 1206: 1205: 1201: 1191: 1189: 1174: 1170: 1160: 1158: 1136: 1132: 1127: 1123: 1114: 1112: 1107: 1106: 1102: 1092: 1090: 1077: 1076: 1072: 1063: 1062: 1058: 1048: 1046: 1039:Popular Science 1031: 1027: 1017: 1015: 1006: 1005: 1001: 991: 989: 974: 970: 960: 958: 951:Popular Science 945: 944: 940: 930: 928: 923: 922: 918: 908: 906: 899: 895: 885: 883: 876: 872: 861: 857: 847: 843: 834: 833: 829: 816: 815: 811: 798: 797: 793: 783: 781: 766: 762: 752: 750: 749:on 19 July 2010 741: 740: 736: 726: 724: 717:Popular Science 709: 700: 690: 688: 686: 670: 666: 656: 654: 650: 649: 645: 636: 635: 631: 621: 619: 617: 601: 597: 587: 585: 563: 556: 551:. 7 March 2022. 547: 546: 542: 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467: 464: 412:electric motor 381: 378: 294:electric motor 288: 285: 252:Main article: 249: 246: 178: 175: 119:General Motors 91:electric motor 85: 82: 24:steering wheel 20:Power steering 15: 9: 6: 4: 3: 2: 2176: 2165: 2162: 2160: 2157: 2155: 2152: 2150: 2147: 2145: 2142: 2140: 2137: 2136: 2134: 2119: 2111: 2109: 2105: 2101: 2100: 2097: 2091: 2088: 2086: 2083: 2081: 2078: 2076: 2073: 2072: 2070: 2066: 2058: 2055: 2053: 2050: 2048: 2045: 2043: 2040: 2038: 2035: 2033: 2030: 2028: 2025: 2023: 2020: 2019: 2018: 2015: 2011: 2008: 2006: 2003: 2001: 1998: 1997: 1996: 1993: 1991: 1988: 1987: 1985: 1981: 1975: 1972: 1970: 1967: 1965: 1962: 1960: 1957: 1955: 1952: 1950: 1949:Shift-by-wire 1947: 1945: 1942: 1940: 1937: 1935: 1932: 1930: 1927: 1925: 1922: 1920: 1917: 1915: 1912: 1910: 1907: 1905: 1902: 1900: 1897: 1895: 1892: 1890: 1887: 1885: 1882: 1880: 1877: 1875: 1872: 1870: 1867: 1865: 1862: 1860: 1857: 1855: 1852: 1850: 1847: 1845: 1842: 1840: 1837: 1835: 1832: 1830: 1827: 1825: 1822: 1820: 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1375: 1372: 1370: 1367: 1365: 1362: 1360: 1357: 1355: 1352: 1350: 1347: 1345: 1342: 1340: 1337: 1335: 1332: 1330: 1327: 1325: 1322: 1320: 1319:Backup camera 1317: 1315: 1312: 1310: 1307: 1306: 1304: 1300: 1296: 1295: 1288: 1279: 1274: 1272: 1267: 1265: 1260: 1259: 1256: 1239: 1235: 1229: 1213: 1209: 1203: 1187: 1183: 1179: 1172: 1157: 1153: 1149: 1145: 1141: 1134: 1125: 1110: 1104: 1088: 1084: 1080: 1074: 1066: 1060: 1044: 1040: 1036: 1029: 1013: 1009: 1003: 987: 983: 979: 972: 956: 952: 948: 942: 926: 920: 904: 897: 881: 874: 867: 866: 859: 853: 852: 845: 837: 831: 823: 819: 813: 805: 801: 795: 779: 775: 771: 764: 748: 744: 738: 722: 718: 714: 707: 705: 703: 687: 681: 677: 676: 668: 653: 647: 639: 633: 618: 616:9780472063130 612: 608: 607: 599: 584: 580: 576: 572: 568: 561: 559: 550: 544: 540: 531: 528: 526: 523: 521: 518: 517: 511: 509: 508:Mercedes-Benz 503: 501: 497: 493: 489: 485: 481: 477: 473: 470:In 2000, the 463: 460: 456: 452: 450: 445: 440: 438: 434: 428: 425: 421: 417: 413: 409: 405: 401: 397: 391: 386: 377: 375: 371: 367: 363: 359: 355: 351: 347: 343: 339: 335: 331: 327: 323: 318: 316: 311: 309: 306:In 1988, the 304: 302: 297: 295: 284: 282: 277: 275: 270: 266: 264: 260: 255: 245: 242: 240: 236: 232: 227: 223: 219: 216: 211: 208: 204: 200: 196: 192: 183: 174: 170: 168: 164: 159: 157: 153: 148: 146: 142: 138: 134: 132: 128: 124: 120: 116: 112: 108: 106: 102: 98: 94: 92: 81: 77: 75: 71: 67: 63: 62:drive by wire 57: 53: 51: 46: 43: 39: 35: 33: 29: 28:motor vehicle 25: 21: 2027:Racing slick 1964:Transfer box 1934:Park-by-wire 1929:Parking pawl 1844:Differential 1819:Direct-drive 1801:Transmission 1791:Steam engine 1736:Part of the 1735: 1454: 1415:Bowden cable 1291: 1284:Car interior 1242:. Retrieved 1238:the original 1228: 1216:. Retrieved 1212:the original 1202: 1190:. Retrieved 1185: 1181: 1171: 1159:. Retrieved 1147: 1143: 1133: 1124: 1113:. Retrieved 1103: 1091:. Retrieved 1087:the original 1082: 1073: 1059: 1047:. Retrieved 1042: 1038: 1028: 1016:. Retrieved 1012:the original 1002: 990:. Retrieved 985: 981: 971: 959:. Retrieved 954: 950: 941: 929:. Retrieved 919: 907:. Retrieved 896: 884:. Retrieved 873: 863: 858: 849: 844: 830: 822:the original 812: 804:the original 794: 782:. Retrieved 777: 773: 763: 751:. Retrieved 747:the original 737: 725:. Retrieved 720: 716: 689:. Retrieved 674: 667: 655:. Retrieved 646: 632: 620:. Retrieved 605: 598: 586:. Retrieved 574: 570: 543: 504: 494:introduced " 484:Lexus LX 470 469: 461: 457: 453: 441: 429: 407: 403: 399: 395: 394: 319: 312: 305: 298: 290: 278: 271: 267: 257: 243: 228: 224: 220: 212: 188: 171: 160: 149: 135: 131:armored cars 127:World War II 115:Pierce-Arrow 109: 105:Pennsylvania 95: 87: 78: 58: 54: 50:servo system 47: 36: 19: 18: 2005:Alloy wheel 1864:Drive wheel 1854:Drive shaft 1814:Chain drive 1625:Convenience 1616:Vehicle mat 1565:Rumble seat 1550:Bucket seat 1506:VIN etching 1486:Immobiliser 1379:Speedometer 1329:Boost gauge 1302:Instruments 1218:8 September 1049:8 September 992:8 September 961:8 September 472:Honda S2000 276:of France. 239:mineral oil 215:torsion bar 66:fly-by-wire 2139:Auto parts 2133:Categories 2090:Alternator 1738:Automobile 1727:Powertrain 1642:Cup holder 1586:Boot liner 1545:Bench seat 1469:Anti-theft 1440:Gear stick 1389:Telematics 1384:Tachometer 1354:Fuel gauge 1244:2009-12-08 1192:8 November 1115:2011-09-07 1045:(5): 50–56 1018:8 November 988:(4): 91–93 753:8 November 622:8 November 588:8 November 536:References 476:gear ratio 410:) uses an 330:Volkswagen 308:Subaru XT6 281:CitroĂ«n SM 205:applies a 101:Pittsburgh 1959:Transaxle 1924:Manumatic 1894:Gearshift 1766:Fuel cell 1647:Car phone 1611:Sun visor 1596:Dashboard 1570:Seat belt 1501:Smart key 1394:Tell-tale 1161:4 October 583:0032-4558 577:(5): 59. 158:in 1958. 74:wire rope 38:Hydraulic 2118:Category 2057:Tubeless 2042:Run-flat 2022:Off-road 1839:Coupling 1761:Electric 1665:Category 1408:Controls 1364:Odometer 1339:Carputer 514:See also 500:5 Series 235:pressure 210:wheels. 145:Cadillac 32:steering 1675:Commons 1540:Armrest 1524:Seating 780:(3): 75 691:18 June 420:vehicle 418:of the 342:CitroĂ«n 338:Peugeot 274:CitroĂ«n 195:gerotor 152:Detroit 84:History 2108:Portal 2068:Hybrid 2032:Radial 2010:Hubcap 1824:Clutch 1771:Hybrid 1740:series 1685:Portal 1535:Airbag 1519:Safety 1425:Clutch 1334:Buzzer 1093:28 May 931:28 May 909:28 May 886:28 May 784:28 May 727:28 May 682:  657:29 May 613:  581:  480:Toyota 424:torque 416:driver 372:, and 366:Toyota 354:Suzuki 259:DIRAVI 254:DIRAVI 123:Bendix 2052:Spare 1995:Wheel 1899:Giubo 1632:Audio 1476:Alarm 1420:Brake 1188:: 243 437:NHTSA 402:) or 374:Mazda 370:Honda 350:Ĺ koda 207:force 167:tires 26:of a 2047:Snow 2037:Rain 2017:Tire 1294:cars 1220:2015 1194:2015 1163:2019 1095:2015 1051:2015 1020:2015 994:2015 963:2015 933:2015 911:2015 888:2015 786:2015 755:2015 729:2015 693:2010 680:ISBN 659:2015 624:2015 611:ISBN 590:2014 579:ISSN 408:MDPS 362:MINI 358:Opel 346:SEAT 334:Audi 326:Ford 2000:Rim 1152:doi 1043:228 986:123 955:186 778:176 721:168 575:162 492:BMW 400:EPS 315:MR2 197:or 40:or 2135:: 1186:15 1184:. 1180:. 1142:. 1081:. 1041:. 1037:. 984:. 980:. 953:. 949:. 776:. 772:. 719:. 715:. 701:^ 573:. 569:. 557:^ 502:. 376:. 368:, 364:, 360:, 356:, 352:, 348:, 344:, 340:, 336:, 332:, 328:, 265:. 241:. 103:, 34:. 1777:) 1773:( 1719:e 1712:t 1705:v 1277:e 1270:t 1263:v 1247:. 1222:. 1196:. 1165:. 1154:: 1148:1 1118:. 1097:. 1067:. 1053:. 1022:. 996:. 965:. 935:. 913:. 890:. 788:. 757:. 731:. 695:. 661:. 640:. 626:. 592:. 406:( 398:( 60:"

Index

steering wheel
motor vehicle
steering
Hydraulic
electric actuators
servo system
drive by wire
fly-by-wire
electrical cables
wire rope
electric motor
Robert E. Twyford
Pittsburgh
Pennsylvania
Francis W. Davis
Pierce-Arrow
General Motors
Bendix
World War II
armored cars
Chrysler Corporation
Chrysler Imperial
Cadillac
Detroit
Canadian Intellectual Property Office
front-wheel drive
tires

hydraulic system
gerotor

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