Mercedes a-B-Class CVT Transmission-1

Information partly provided by EuroMatic

Mercedes A, B-Class CVT transmission

Cut away view

Cut away view

Cut away view

Sectional view Torque converter 

Pushbelt Primary pulley

Secondary pulley Reverse clutch Final reduction ear 

!ifferential

Forward clutch

Forward and reverse clutch

"alve body

"alve body

"alve body

#

"alve body

Crac$ in valve body

Crac$ in valve body

BMW-MINI Cooper  CVT transmission

Sectional view Forward clutch

"alve body Primary pulley %ilpump

Planetary earset Reverse clutch

Pushbelt Final reduction ears and differential

Tar!et en!ine speed 000

Vario!ram

"o# 5000

   d   e   e   p   s   e   n    i   !   n   e    t   e   !   r   a    T

4000

$%erdri%e 3000

2000

0 0

20

40

0

&0

100

120

140

10

1&0

Ve'icle speed ()m*'+

!rive off full throttle throttle

&

()) *

'ever position &

!rive

Enine speed &

+)))

0)))

.)))

,)))

,,))

I variator

low

low

low

medium

top

)

+.

/0

(+)

(-)

&

"ehicle speed &

200

Tar!et en!ine speed 000

Vario!ram

"o# 5000

   d   e   e   p   s   e   n    i   !   n   e    t   e   !   r   a    T

(

4000

$%erdri%e

+

3000

0

.

,

/

2000

0 0

20

40

0

&0

100

120

Ve'icle speed ()m*'+

Chanin from ! to step mode .) *

.) *

'ever position &

!

Step

Enine speed &

++))

0())

I variator

&

%verdrive

/th ear 

"ehicle speed &

()) $m1h

()) $m1h

throttle

&

140

10

1&0

200

Tar!et en!ine speed 000

Vario!ram

"o# 5000

   d   e   e   p   s   e   n    i   !   n   e    t   e   !   r   a    T

(

4000

$%erdri%e

+

3000

0

.

,

/

2000

0 0

20

40

0

&0

100

120

140

10

1&0

200

Ve'icle speed ()m*'+

!own shiftin throttle

&

.) *

'ever position &

Step mode

Enine speed &

++)) rpm

0)))

02))

.-))

I variator

/

,

.

0

-) $m1h

-) $m1h

-) $m1h

-) $m1h

&

"ehicle speed &

Tar!et en!ine speed 000

Vario!ram    d   e   e   p   s   e   n    i   !   n   e    t   e   !   r   a    T

"o# 5000

(

4000

$%erdri%e

+

3000

0

.

,

/

2000

0 0

20

40

0

&0

100

120

140

10

1&0

Ve'icle speed ()m*'+

3ic$ down mode $d

$d

$d

$d

$d

'ever position &

Step

Step

Step

Step

Step

Enine speed &

++))

,+))

.+))

.,))

.-))

I variator

,

+

0

.

,

/)

/)

2)

4-

(0)

throttle

&

&

"ehicle speed &

200

5daption C"T C"T adaption 6M7 Mini& 5fter repair or replacement of valve body8 adaption of the C"T is hihly recommended9 6efore adaption run8 the adaption should be 9 < or with the oriinal 6M7