How Automatic Transmission Works in Hindi | Automatic Transmission System कैसे काम करता है ?
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- Опубліковано 30 кві 2019
- An automatic transmission(AT) is a transmission system in which selection of appropriate gear ratio need by the vehicle is an automatic process operated by the accelerator and brake pedal. The lay shaft, main shaft and clutch shaft with parallel gear train arrangement is replaced with an epicyclic or sun and planetary gear train arrangement and also the manual clutch from manual power train is replaced with hydro-coupled clutch or torque converter which in turn removes the clutch pedal from the vehicle.
The automatic transmission usually comes with p-parking, n-neutral, r-reverse, d-drive, s-speed,mode,Each mode is having infinite torque and speed ratios required by vehicle.
Main Parts of Fully Automatic Transmission:
1. Epicyclic gear train- It is also known as the sun and planetary gear arrangement,The parallel shaft gear train from manual transmission is replaced with more compact epicyclic gear train in automatic transmission that consists of -
1. Annular or ring gear- A ring type gear with inner angular cut teethes and is placed at the outermost position in epicyclic gearbox, inner teethes of annular gear is meshed with the the planet gears at the outer point.
2. Sun gear- It is the gear having angular teethes which are in constant mesh with the planet gears at the inner point, The sun gear is connected to the torque convertor shaft.
3. Planet gears - Small pinion gears which not only rotates about their own axis but also revolve around the sun gear.
4. Planet carrier- It is the carrier over which the axis of the planet gears is mounted and is connected with the final output shaft.
5. Brake or clutch bands- Fixing mechanism used to fix any one from the above in order to attain required gear ratio.
2. Hydraulic system- It is the system of automatic transmission that contains oil pumps, governor and hydraulic valves that controls the brake or clutch band by sending pressurised fluid through the valve body in order to control the epicyclic gearbox, The band are connected to the hydraulic system through the shift valve and the output shaft is connected to the hydraulic system through the governor used.
3. Torque convertor- The clutch from the manual transmission is replaced with the torque convertor that uses pressurised fluid for the engagement and disengagement of the engine output, The torque convertor is operated by the accelerator pedal.
The torque convertor has 3 main parts -
1. Impeller - It is the part of torque convertor that is connected with the engine output shaft and causes the pressurised fluid to flow inside the torque convertor when the engine starts.
Impeller has angular cut vanes that causes rotation of the fluid.
2. Turbine - It is the part of torque convertor that is connected to the transmission input shaft and transmits engine’s power to the transmission by the help of rotating pressurised fluid.
Turbine has opposite cut angular vanes that catches the fluid sent by the impeller which in turn causes rotation of the transmission input shaft.
3. Stator - It is the intermediate device having angular cut vanes used to direct the fluid from impeller to the the turbine.
Working :
The working of automatic transmission is totally different from the manual transmission as no clutch pedal and no continuous shifting of gears is required in this transmission system.
Drive mode:
It is the forward drive mode which consists the different gear ratios from high torque to medium speed, When this mode is selected and if the vehicle is in its steady state then by sensing the accelerator pedal by hydraulic system or electronic control unit the input is sent to epicyclic gearbox which in turn locks the annular gear with the help of bands and high torque or first gear ratios are obtained.
When the vehicle starts moving and attaining the accelerator pedal input from the hydraulic system or electronic control device is again sent to the epicyclic gearbox which in turn activates the bands which in turn locks the sun gear and medium speed or second gear ratios are obtained.
Reverse mode:
When reverse mode is selected the accelerator pedal input is sent to the epicyclic gearbox by hydraulic system or ecu which in turn activates the bands and the bands locks the planet gear carrier, Which reverses the direction of the output shaft which in turn reverse the direction of the vehicle.
Parking mode:
When this mode is selected the the latch mechanism locks the drive wheel which in turn prevents the vehicle from moving.
Neutral mode:
When neutral mode is selected the turbine shaft or transmission input shaft is disconnected from the engine output or impeller shaft and the neutral gear is achieved.
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Last line of explanation was the best "to is tarh automatic transmission works karta hai"
Thanks bro 🙏
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Thank you sir aap bahut aachhe se describes karte hai sir
Superb thank u for ur selfless service
I love your way of explaining
Lot of thanks sir for clearing my all doubt regarding form automatic transmission system
👍
Amazing explain......👍
Very great information... So helpful information sir.. U r so genius sir ji... 👌👌👌🙏🙏🙏👍👍👍👍💐💐💐💐💐🌹🌹🌹🌹🌹🌹
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Bahut badhiya good vidio understand
very nice video and thanks making for this video and teaching
U r welcome 😊
Superb.Finally I cleared my all doubts today 🙏
👍
Sir Can you plz make a video on Janny Hydrostatic drive ?
Dhanyavaad sir 😍😍
Sir ap bura namo present time me automatic trancemission gearbox me planetary gearset use nhi hoti vw skoda audi mevi use hoti he to is gearboxka video dalo taki apse a66ese informetion mile savko thank you sir
bohot pasand aya sir ji
👍👍👍
very very important vedio for engineers
👍
Thanks great
Amazing
Nice work
Nice video
Sir are all automatic transmission system have same gear ratio
For example there are two cars Car A and Car B both have automatic transmission system so they both have same gear ratio or not pls tell
where can i get Reverse gear clutch & pressure plate for hyundai verna sx plus diesel 1.6 crdi model 2018 automatic
Nice
Best video 👍
Suppar sir
Thanks 😊
Nice video sir
I have one question how speed increase and decrease in auto transmission
I made a video about that. It's called, "How Clutch Packs Work for an Automatic Transmission." Check it out.
Sir in audi why we use CVT transmission the CVT transmission used in scooty no
sir torque convertor me oil supply kha se hoti h ya usme hi rhta h please clear point
Sir where is hydrulic fluid act on planetary gear
Sir I want know .which car give more mileage in same C.c.engin .automatic car or manual car.
Manual somehow
Imp. Video
Thanks for appreciating the work
Ye videomay aapka voice sunnemay thoda dikkat huwa thoda slow bolteto achcha hota sir ji
बहुत सुन्दर नरेंद्र शर्मा पानीपत 🙏🏻🌺🌹❣️⚘️🥀🌻🌷❣️🌺🌻🌺🙏🏻
Please make a video on that
Transmission gear me Gear Ke uper Aek Ring Gear Jesa join hota he ao kya hota he?
❤
Good morning sir, Auto mobile me to job to mil ni rha, bhut sare company bnd chl rhi h, sir iske bare kuch btay aap, kya ab sir mechanical engineer ko job ni mil payegi
Iske Uper video jaldi upload karege
Tvs XL 💯 Ka gearbox Kam kaise karta ha . Video banawo sir.
Becouse i m allready use to mahindra scorpio automatic transmision system car,
1) but is not run down ower speed sir just 60 & 70 speed ower run,
2) जब car 70 और 80 के speed मे runing करती है, तब् engin का sound बडजाती है, और desiel भी ower ही लागता है, i tink 9.5 litter per km चालती है,
3) क्या gear सही तरिकेसे होता नही है, या और भी कुछ problem है, कुछ समज मे नही आता, plz elp me...?
Cmnt sir jarur kariyega, jay hind
difference between thetrans axial and transmission
हरि ॐ 🙏🌺😊 हमें हाड्रालिक प्रणाली में गवर्नर ओर हाइड्रोलिक वॉल्व ठीक से समझाएं
Mahindra scorpio automatic transmision how to the work plz new video apload
Menul me atogher lagsaktahe
IMT GEARBOX WORKING PROCESS explain with animation
Auto magic gair Kaise repair kia jata hai
Meri car me auto gear change nahi ho raha hai,,, kya problem hai sir
Reverse problem in automatic Corolla
audi a6 revas gear me cal rahe hai sirf reves zaa rahe hai
Animation मे दिखाओ.
Manul gadi automatic konsi। achi rahengi
Automatic
Sir baleno 1.3 delta lene ki soch raha hu kaise rahengi
Achchi gaadi hai
🙏👍👍🙏👍🥀🌹
Hii
hi
Bike driver kabse car chalane lag gaya?
Automatic ka exam hai ham
Sbko samajh.nhi aaya hoga sir