Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid...

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Automotive Service Modern Auto Tech Study Guide Chapter 57 Pages 10831109 Automatic Transmissions 17 Points

Transcript of Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid...

Page 1: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service Modern Auto Tech Study Guide Chapter 57 Pages 1083­1109 Automatic Transmissions 17 Points

Page 2: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 1.  An automatic transmission senses engine _________ and engine ________ 

to determine shift points. 

Speed, Load Torque, Speed Load, Vacuum

Page 3: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 2.  Internal hydraulic pressure is used to _____________ gears.   A PCM can also 

be used to sense conditions and actuate hydraulic pressure to control shift points inside of an automatic transmission (AT). 

Shift Cancel Delete

Page 4: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

TQC 

P u m p 

Valve Body 

Planetary Gear Sets Clutches 

Bands 

Governor 

Vacuum Modulator or 

Throttle Valve PCM & Shift Solenoids 

Automotive Service

Page 5: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 3.  Automatic transmissions use __________, ______________ & _________ as 

methods to transmit power. 

Fluids, Friction Gears Fluids, Blood, Skin Fluids, Friars, Gears

Page 6: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 4.  The main external parts that make up an AT are the _______ housing, 

transmission ________, oil _____, and the extension housing at the rear. 

Bell, Case, Pan Dell, Case, Pan Well, Case, Pan

Page 7: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 5.  The ___________  __________________ is a fluid clutch that is the means 

of coupling and uncoupling the engine from the transmission. ATF is the fluid used inside the transmission.  It’s color is red. 

Flex Plate Torque Converter Harmonic Balancer

Page 8: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 6.  Besides the housing, a converter is made up of the __________________ or 

pump (input), the _________, which is the driven or output member, and the stator, which is designed to improve oil circulation inside. 

Impeller, Compressor Impeller, Turbine Propeller, Turbine

Page 9: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 7.  The ________  __________ connects the crankshaft to the torque converter & 

holds the starter ring gear. 

Fly Wheel Flex Plate VIN Plate

Page 10: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 8.  A ____________ torque converter improves fuel economy (mpg) by directly 

connecting the engine to the input shaft of the transmission. PCM­actuated, it takes away lost motion from inside the torque converter. 

Lockup Backup Wrapup

Page 11: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 9.  An AT has an _________ shaft or turbine shaft and an ____________ shaft 

on the same axis or centerline. 

Input, Output Input, Turbine Turbo, Output

Page 12: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 10.  Automatic transmissions use _________________ gear sets, consisting of 

a sun gear, planetary pinions in a carrier and an internal ring gear. Reductions, directs, overdrives, reverse, & neutral are all possible! 

Helical Hypoid Planetary

Page 13: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 11.  Wet, multi­disc _________________ and __________ are the friction devices 

used to drive and lock planetary gear set components in order to achieve different gear ratios and directions of rotation. 

Clutches, Flywheels Clutches, Bands Clutches, Torringtons

Page 14: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 11.  Wet, multi­disc _________________ and __________ are the friction devices 

used to drive and lock planetary gear set components in order to achieve different gear ratios and directions of rotation. 

Clutches, Flywheels Clutches, Bands Clutches, Torringtons

Page 15: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 12.  Clutches are applied by fluid pressure and released by _______________. 

_______ are actuated by hydraulic servos, which are a form of “apply pistons”. 

Springs, Bands Springs, Discs Springs, Drums

Page 16: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 13.  Bands are steel ___________ with linings of friction materials. 

They clamp around clutch drums to stop rotation.  Bands are often adjustable, sometimes even from the outside of the transmission case. 

Straps Belts Springs

Page 17: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 14. One­way roller or sprag clutches are often called ______________ clutches. 

They can hold in one direction and allow components to spin freely in the other direction.  They operate instantly without fluid pressure. 

Underrunning Overrunning Marathonning

Page 18: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 15. Transmission ______________ are needed because of the tremendous heat 

developed in the converter. 

Heaters Inverters Coolers

Page 19: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 16. The transmission __________ generates the fluid flow needed to develop 

pressure to apply hydraulic components and the fluid flow for lubrication. 

Pump Sump Dump

Page 20: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service 17. The manual valve is operated by the action of the ____________ selecting 

gears.  The _______________ modulator valve senses engine load and the _______________ valve senses vehicle speed.  Both are used to determine shift points.  The kick down valve is used to downshift for fast acceleration (passing gear).

Page 21: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service

Page 22: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service

Page 23: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service

Page 24: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service CVT Continuously Variable Transmission

Page 25: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service

Page 26: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service

Page 27: Automotive Service - Grafton School District · Automotive Service 5. The _____ _____ is a fluid clutch that is the means of coupling and uncoupling the engine from the transmission.

Automotive Service The easiest way to remember which mode a planetary gearset is in is to look at the planetary carrier. 

Carrier drives = overdrive Carrier driven = reduction Carrier held = reverse Two members held = direct drive Nothing driven or held = neutral Parking Pawl engaged to the output shaft = park