Mercedes-Benz ML320. Service manual - part 160

 

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Mercedes-Benz ML320. Service manual - part 160

 

 

 

2001 Mercedes-Benz ML320 

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

  

me 

 

Fig. 56: Planetary Gear Set, Function (1 Of 5)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
 

Operation - The ring gear (1) and sun gear (3) elements of a planetary gear system are alternately driven and 
braked by the actuating elements of the multi-plate clutch and multiple-disc brake. See .Fig. 56 The planet gears 
(2) can turn on the internal gearing of the ring gear (1) and on the external gearing of the sun gear (3). This 
allows for a variety of gear ratios and the reversal of the rotation direction without the need for moving gear 
wheels or shift collars. 

The torque and speed are converted corresponding to the lever ratios or the ratio of the number of teeth on the 
driven to the driving gears and is known as the gear ratio i. The overall ratio of a number of planetary gear sets 
connected in series is obtained by multiplying the partial ratios. When two components of the planetary gear set 
are locked together, the planetary gear set is locked and turns as a closed unit. 

Advantages Of A Planetary Gear Set:  

Shifting Ability Under Load  

Several Ratios Can Be Produced  

Constant Meshing Of The Gears  

Simple Direction Reversal  

High Efficiency  

Coaxial Location Of Input And Output  

Compact Design  

The Following Basic Ratio Possibilities Can Be Realized  

See Fig. 57

Sun Gear Locked  

Ring Gear Driving  

Planet Gears Driven  

Relatively Low Step-Down Ratio 

 

2001 Mercedes-Benz ML320 

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

  

me 

 

Fig. 57: Planetary Gear Set, Function (2 Of 5) 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

 

2001 Mercedes-Benz ML320 

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

  

me 

 

See Fig. 58

Hollow Gear Locked  

Sun Gear Driving  

Planet Gears Driven  

Relatively High Step-Down Ratio 

 

2001 Mercedes-Benz ML320 

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

  

me 

 

 

 

 

 

 

 

 

Content   ..  158  159  160  161   ..