gearbox auto for Dummies
gearbox auto for Dummies
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When the computer decides the time is correct, it disengages the clutch automatically, selects a completely new gear after which re-engages the clutch.
Some automatic transmissions make use of brake bands to exert resistance or hold sure elements. They control gear engagement by enclosing a drum that is connected to a certain equipment or shaft and so are turned on hydraulically.
The leading pump which pressurises the ATF is usually a gear pump mounted between the torque converter and the planetary gear set. The input for the primary pump is linked to the torque converter housing, which in turn is bolted to your motor's flexplate, Therefore the pump provides stress Each time the motor is running. A disadvantage of this arrangement is that there is no oil strain to work the transmission in the event the motor is not operating, for that reason it can be impossible to force begin a vehicle Geared up by having an automatic transmission without having rear pump (aside from several automatics crafted previous to 1970, which also involved a rear pump for towing and drive-beginning functions).
Cutaway see of the ZF 8HP transmission: torque converter within the remaining, planetary gearsets during the centre, Management mechanisms at The underside The commonest structure of automatic transmissions would be the hydraulic automatic, which usually works by using planetary gearsets that are operated applying hydraulics.
Setiap kenderaan mempunyai jangka hayat minyak gearbox yang berbeza, bergantung kepada jenama dan modelnya.
Pada gearbox manual, pergeseran equipment yang tidak responsif boleh mengakibatkan ketidakserasian antara putaran for every minit (RPM) enjin dan kelajuan serta pergerakan sebenar kenderaan. Ini bermakna enjin anda boleh berputar tinggi tetapi kenderaan anda tidak mempercepat.
The effectiveness (power output being a percentage of input) of conventional automatic transmissions ranges from 86 to 94%. Handbook transmissions are more gasoline successful than all but the newest automatic transmissions because of their inherently reduced parasitic losses (commonly of about 4%) Besides being more cost-effective to create, lighter, improved carrying out, and of more simple mechanical design and style.
Reduced gears have larger sized cogs and help the engine to deliver higher levels of force with no motor vehicle going immediately, which is right if you're driving slowly or uphill, according to the journal Transportation Research Component A: Common.
Small (L): This place teruskan membaca presents for engine braking on steep hills. It also supplies for just a reduce gear ratio for beginning when closely loaded.
This enables smooth equipment shifts and less complicated driving, and automatic gearboxes are sometimes far more productive than their manual counterparts.
Pernah tak anda menukar gear dalam keadaan kereta tidak berhenti sepenuhnya? Mungkin kerana anda sedang mengejar masa jadi anda terus saja menukar equipment equipment daripada R kepada D atau sebaliknya tanpa menunggu untuk kereta berhenti terlebih dahulu.
Salah satu tanda kotak gear yang bermasalah adalah apabila anda mendengar bunyi-bunyi tidak biasa, terutamanya semasa menukar gear. Kerana terdapat beratus-ratus bahagian dalam kotak gear, walaupun satu bearing yang haus atau longgar boleh menghasilkan bunyi yang tidak dijangka.
Perlu diingat bahawa bunyi-bunyi ini juga boleh menunjukkan masalah dengan enjin, shaft pemanduan, atau sistem ekzos, oleh itu anda seharusnya memeriksa kenderaan anda untuk menentukan punca masalah.
Selain itu, penjagaan gearbox yang baik juga boleh memastikan kereta anda dapat berfungsi dengan ideal dan tahan lama. Semoga panduan ini membantu anda dalam mengendalikan kereta auto dengan lebih baik. nak lebih banyak ideas? baca Cara Buang Kahak Bayi.