{"id":8658,"date":"2022-03-10T20:30:40","date_gmt":"2022-03-10T20:30:40","guid":{"rendered":"https:\/\/www.hexorcism.com\/19BP\/sm2334129\/"},"modified":"2022-03-10T20:30:40","modified_gmt":"2022-03-10T20:30:40","slug":"sm2334129","status":"publish","type":"page","link":"https:\/\/www.hexorcism.com\/19BP\/sm2334129\/","title":{"rendered":"ELECTRIC POWER STEERING SYSTEM [(US)]"},"content":{"rendered":"
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ELECTRIC POWER STEERING SYSTEM [(US)]<\/h3>\n<\/div>\n

SM2334129<\/p>\n

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id0613002459x1<\/p>\n



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Outline<\/p>\n

\u2022 A column-assist type electric power steering (EPS) has been adopted with a motor installed to the steering column to assist in the steering force.<\/div>\n
\u2022 The size and weight of the system have been reduced by integrating the EPS control module (CM) and the EPS motor.<\/div>\n
\u2022 The EPS achieves smooth handling performance from low to high speed and excellent steering feel by the vehicle speed response control.<\/div>\n
\u2022 A steering column with a tilt\/telescoping mechanism has been adopted allowing fine adjustment of the steering wheel position according to the driving posture of the driver.<\/div>\n
\u2022 A steering column and shaft with a shock-absorbing mechanism has been adopted.<\/div>\n
\u2022 The automatic configuration function and the steering wheel angle neutral position auto-learning function have been adopted.<\/div>\n



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Specifications<\/p>\n

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Item<\/p>\n<\/th>\n

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Specification<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

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Steering wheel<\/div>\n<\/td>\n
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Outer diameter<\/div>\n<\/td>\n
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(mm {IN})<\/div>\n<\/td>\n
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372 {14.6}<\/div>\n<\/td>\n<\/tr>\n
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Lock to lock<\/div>\n<\/td>\n
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(turns)<\/div>\n<\/td>\n
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2.90<\/div>\n<\/td>\n<\/tr>\n
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Steering column and shaft<\/div>\n<\/td>\n
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Shaft type<\/div>\n<\/td>\n
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Collapsible<\/div>\n<\/td>\n<\/tr>\n
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Joint type<\/div>\n<\/td>\n
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Cross-shaped joint<\/div>\n<\/td>\n<\/tr>\n
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Tilt amount<\/div>\n<\/td>\n
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(mm {IN})<\/div>\n<\/td>\n
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45 {1.8}<\/div>\n<\/td>\n<\/tr>\n
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Telescope amount<\/div>\n<\/td>\n
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(mm {IN})<\/div>\n<\/td>\n
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70 {2.8}<\/div>\n<\/td>\n<\/tr>\n
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Steering gear and linkage<\/div>\n<\/td>\n
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Type<\/div>\n<\/td>\n
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Rack-and-pinion<\/div>\n<\/td>\n<\/tr>\n
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Rack stroke<\/div>\n<\/td>\n
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(mm {IN})<\/div>\n<\/td>\n
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154.4 {6.079}<\/div>\n<\/td>\n<\/tr>\n
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Power steering system<\/div>\n<\/td>\n
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Power assist type<\/div>\n<\/td>\n
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Electric motor assist (Column assist type)<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n



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Purpose, Function<\/p>\n

\u2022 The EPS system makes up for the steering force required when the driver operates the steering wheel using the EPS motor to reduce the load on the driver.<\/div>\n



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Construction<\/p>\n

\u2022 The EPS consists of the following mechanisms.<\/div>\n
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\u2015 Manual steering mechanism Consists of the steering wheel, steering column, intermediate shaft, and steering gear and linkage.<\/div>\n
\u2015 Electric assist mechanism Consists of the EPS motor and reduction gear.<\/div>\n
\u2015 Control mechanism Consists of the EPS CM and torque sensor.<\/div>\n
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\u2022 The EPS CM communicates with the PCM, DSC HU\/CM, SAS control module, instrument cluster, and CMU via CAN communication.<\/div>\n<\/dd>\n<\/dl>\n<\/dd>\n<\/dl>\n

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Part name<\/p>\n<\/th>\n

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Functions<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

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EPS CM<\/div>\n<\/td>\n
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\u2022 Calculates the optimum assist force based on the signals from the torque sensor, EPS motor, PCM, DSC HU\/CM, and SAS control module, and outputs the EPS motor drive current.<\/div>\n
\u2022 After the vehicle begins moving, the system performs self-learning of the steering angle neutral position based on the signals from the DSC HU\/CM and the SAS control module, and outputs it as a steering angle (estimated absolute steering angle) signal to CAN.<\/div>\n
\u2022 Outputs a power steering malfunction indication on request signal signal to CAN when there is a malfunction in the EPS system.<\/div>\n<\/td>\n<\/tr>\n
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PCM<\/div>\n<\/td>\n
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\u2022 Transmits an engine speed signal to the EPS CM via CAN communication.<\/div>\n<\/td>\n<\/tr>\n
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DSC HU\/CM<\/div>\n<\/td>\n
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\u2022 Transmits a vehicle wheel speed signal, vehicle speed signal, vehicle lateral-G (vehicle lateral acceleration speed) and yaw rate (vehicle turning angle speed) to the EPS CM via CAN communication.<\/div>\n<\/td>\n<\/tr>\n
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SAS control module<\/div>\n<\/td>\n
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\u2022 Transmits the signal from the steering angle sensor to the EPS CM as a steering angle (absolute steering angle) signal via CAN communication.<\/div>\n<\/td>\n<\/tr>\n
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Instrument cluster<\/div>\n<\/td>\n
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\u2022 Alerts the driver that there is a malfunction in the EPS system by turning on the electric power steering warning indication based on the electric power steering warning light\/electric power steering warning indication on request signal output by the EPS CM.<\/div>\n<\/td>\n<\/tr>\n
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CMU<\/div>\n<\/td>\n
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\u2022 Alerts the driver that there is a malfunction in the EPS system by turning on the electric power steering warning indication based on the electric power steering warning light\/electric power steering warning indication on request signal output by the EPS CM.<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n


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Structural View<\/p>\n\n\n\n
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<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
am3zzn00009182<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n


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System Wiring Diagram<\/p>\n\n\n\n
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<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
am3zzn00007894<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n



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Operation<\/p>\n

1.Steering force (1) generated by the driver’s steering wheel operation is detected by the torque sensor built into the steering column and shaft, and it is output (2) to the EPS CM as a steering torque signal.<\/p>\n

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2.The EPS CM calculates optimum assist force based on the steering torque signal (2) from the torque sensor, the vehicle speed signal (3) from the DSC HU\/CM and engine speed signal (4) from the PCM, and EPS motor position information (5) from the EPS motor, and outputs (6) electric current to drive the EPS motor.<\/p>\n

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3.The EPS motor drive force (assist torque) generated by the EPS motor drive current (6) from the EPS CM is transmitted (7) to the intermediate shaft via the reduction gear to assist the driver’s steering operation.<\/p>\n

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am3zzn00009183<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

ELECTRIC POWER STEERING SYSTEM [(US)] SM2334129 id0613002459x1 Outline \u2022 A column-assist type electric power steering (EPS) has been adopted with a motor installed to the steering column to assist in the steering force. \u2022 The size and weight of the system have been reduced by integrating the EPS control module (CM) and the EPS motor. \u2022 The EPS achieves smooth handling performance from low to high speed and excellent steering feel by the vehicle speed […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-8658","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/8658","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/comments?post=8658"}],"version-history":[{"count":0,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/8658\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/media?parent=8658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}