Center casting and governor for automatic transmission clutch

An automatic transmission having a series of clutches and front and rear servos engageable in various combinations to provide different multiple forward gears and a reverse gear, comprising:

• a valve body with a central casting;
• a governor body operatively connected to the central casting and to the bands;
• and
• hydraulic circuitry in the central casting providing fluid communications with the governor body to apply the rear servo in drive range first gear;
• and
• the governor body including a valve to apply and release the rear servo.

An automatic transmission having a series of clutches and front and rear servos engageable in various combinations to provide different multiple forward gears and a reverse gear, comprising:

• a valve body with a central casting;
• a governor body operatively connected to the central casting and to the bands;
• and
• hydraulic circuitry in the central casting providing fluid communications with the governor body to apply the rear servo in drive range first gear;
• and
• the governor body including fluid circuitry and a valve moveable between open and closed positions, wherein fluid flows from the governor body to holes in the central casting to the rear servo circuit when the valve is in the open position and thereby apply the rear servo, and wherein such fluid flow is precluded when the valve is in the closed position.

An automatic transmission having a series of clutches and front and rear servos engageable in various combinations to provide different multiple forward gears and a reverse gear, comprising:

• a valve body with a central casting;
• a governor body operatively connected to the central casting and to the bands;
• and
• hydraulic circuitry in the central casting providing fluid communications with the governor body to apply the rear servo in drive range first gear;
• and
• the hydraulic circuit including first and second gear circuits, and a hole in the second gear circuit to create a fluid passage to the governor body.

An automatic transmission having a series of clutches and front and rear servos engageable in various combinations to provide different multiple forward gears and a reverse gear, comprising:

• a valve body with a central casting;
• a governor body operatively connected to the central casting and to the bands;
• and
• hydraulic circuitry in the central casting providing fluid communications with the governor body to apply the rear servo in drive range first gear;
• the governor body including a solenoid and a pressure sensor;
• the governor body including a line pressure circuit to supply hydraulic fluid to the solenoid and a governor circuit to supply hydraulic fluid to the sensor;
• and
• the governor body including a hole to connect the line pressure circuit to a fluid passage.