AUTOMATIC TRANSMISSION - 123seminarsonly.com

AUTOMATIC TRANSMISSION - 123seminarsonly.com

AUTOMATIC AUTOMATIC TRANSMISSION TRANSMISSION Presented By, Muhammed Riyas S7MB NO:103 Engg Guided By, Gopinathan.V Asst:Prof Dept of Mechanical Introduction

Device which changes gear ratios automatically Deliver maximum efficiency Difference between automatic and manual transmission Easier to drive because they do not have a clutch pedal or gearshift lever There are two type of automatic transmissions CLASSIFICATION AUTOMATIC TRANSMISSIONS USING

PLANETARY GEARS CONTINUOUSLY VARIABLE TRANSMISSION(CVT) AUTOMATIC TRANSMISSIONS USING PLANETARY GEARS Components PLANETARY GEAR SYSTEM TORQUE CONVERTER

HYDRAULIC SYSTEM GOVERNOR COMPUTER CONTROLS 1. Sun gear 2. Planet gear 3. Ring gear 4. Planetary carrier PLANETARY GEAR SYSTEM PLANETARY GEAR SYSTEM (SIDE VIEW) HOW PLANETARY GEARS WORK Power transfer can only take place when one of the members is held at rest or if two of the members are locked. Input

Output Stationary Calculation Gear Ratio A Sun (S) Planet Carrier (C) Ring (R) 1 + R/S

3.4:1 B Planet Carrier (C) Ring (R) Sun (S) 1 / (1 + S/R) 0.71:1 C

Sun (S) Ring (R) Planet Carrier (C) -R/S -2.4:1 Gear Input Output Fixed

Gear Ratio 1st 30-tooth sun 72-tooth ring Planet carrier 2.4:1 30-tooth sun Planet carrier

36-tooth sun 2.2:1 Planet carrier 72-tooth ring 36-tooth sun 0.67:1 Total 2nd 1.47:1 2nd

3rd 30- and 36-tooth suns 72-tooth ring OD Planet carrier 72-tooth ring 36-tooth sun 0.67:1

Reverse 36-tooth sun 72-tooth ring Planet carrier -2.0:1 1.0:1 TORQUE CONVERTOR takes the place of the clutch found on standard shift vehicles

large doughnut shaped device that is mounted between the engine and the transmission it uses oil or transmission fluid to transmit power three internal elements that work together to transmit power to the transmission. TORQUE CONVERTOR THE HYDRAULIC SYSTEM complex maze of passages and tubes that sends transmission fluid under under pressure to all parts of the transmission and torque converter. Transmission fluid serves in shift control, general lubrication and transmission cooling. Keeps the transmission at normal operating

temperature OIL PUMP VALVE BODY SHIFT VALVES BANDS Gear pump Oil Pump Produce all the oil pressure that is required in the transmission

The oil is then sent, under pressure to the pressure regulator, the valve body and the rest of the components, as required. Valve Body The brain of the automatic transmission Contains a maze of channels and passages that direct hydraulic fluid to the numerous valves These valves activate the appropriate clutch pack or

band servo to smoothly shift to the appropriate gear for each driving situation. Shift Valves Supply hydraulic pressure to the clutches and bands to engage each gear Determines when to shift from one gear to the next The 1 to 2 shift valves determines when to shift from first to second gear.

Band A band is a steel strap with friction material bonded to the inside surface. GOVERNER provides the inputs that tell the transmission when to shift connected to the output shaft and regulates hydraulic pressure based on vehicle speed COMPUTER CONTROLLS

Detect such things as throttle position, vehicle speed, engine speed, engine load,etc. to control exact shift points Downshift automatically when going downhill, to control speed and reduce wear on the brakes. Up shift when braking on a slippery surface to reduce the braking torque applied by the engine. Inhibit the Up shift when going into a turn on a winding road.

CONCLUSION Automatic transmissions contain mechanical systems, hydraulic systems, electrical systems and computer controls, all working together in perfect harmony THANK YOU

Recently Viewed Presentations

  • Treatment of Diabetes in People with Heart Failure

    Treatment of Diabetes in People with Heart Failure

    Key Changes. New information on. The use of DPP4 inhibitor and GLP1 receptor agonists in people with type 2 diabetes and heart failure. Role of SGLT2 inhibitor in patients with established CVD to reduce heart failure hospitalization
  • Crisis Intervention and Suicide

    Crisis Intervention and Suicide

    Researchers studied 500 people who had gone to Golden Gate Bridge to jump and were stopped before they could do so. 94% were still living for an average of 26 years afterwards or had died of natural causes. If you...
  • Multimedia Summer Camp - MTSU

    Multimedia Summer Camp - MTSU

    Multimedia Summer Camp Using Loop for Pictures
  • Everyday Life in the Warsaw Ghetto - Michael Krop

    Everyday Life in the Warsaw Ghetto - Michael Krop

    An old man a on a ghetto street - why is he taking off his hat? A horse-drawn cart - what types of transportation were Jews forced to use? What does this tell you about their circumstances? Jewish women on...
  • 70.1 - Discuss how psychotherapy, biomedical therapy, and ...

    70.1 - Discuss how psychotherapy, biomedical therapy, and ...

    70.1 - Discuss how psychotherapy, biomedical therapy, and eclectic approach to therapy differ. The eclectic approach involves using a variety of therapeutic techniques based on the symptoms and needs of the client. The focus among the different types of therapists...
  • What's New in Windows Server 2016

    What's New in Windows Server 2016

    Bring Windows Server containers to the Docker ecosystem to expand the reach of both developer communities. Docker Engine. Docker Engine for Windows Server containers will be developed under the Docker open source project. Docker client. Windows customers will be able...
  • Part II: Preparation/Process - Professor Mark J. Grossman

    Part II: Preparation/Process - Professor Mark J. Grossman

    Power of Persuasion. Persuading is the goal of most public relations programs. Getting someone to do something through advice, reasoning or arm-twisting. Classic persuasion theory - people may be of two minds. Systematic mode (carefully considers argument) Heuristic mode (skimming...
  • The Evolution of Supernatural Imagination

    The Evolution of Supernatural Imagination

    Unseen mediating causal forces. Chimps pass some TOM tests, but fail physical mediating forces tests. Tomasello (1999): unseen mental state attribution precedes unseen physical causal attribution. Richert & Smith (2010): unseen mental state attribution - unseen mental states of unseen...