Daimlerchrysler Corporation

Chrysler Corporation

Chrysler Group LLC

Charles J Redinger

Thomas D Nogle

Berthold Martin

Roy S Nassar

Charles K Streetman

Mohamed Fahs

Howard L Benford

Maurice B Leising

Gerald L Holbrook

Hussein A Dourra

Alfred P Blomquist

David N Concannon

Edwige K Toussagnon

One implementation of a six-speed transmission includes a first gearset including first and second planetary gearsets each having a number of teeth. The transmission also has a second gearset including a third planetary gearset operably associated with the first and second planetary gearsets. The third planetary gearset has an equal number of teeth with respect to one of the first and second planetary gearsets. The transmission also has a first plurality of shift elements operably associated with the first and second planetary gearsets, each of the first plurality of shift elements being movable between a released state and an applied state to selectively engage at least one of the first and second planetary gearsets. The transmission also has a second plurality of shift elements operably associated with the third planetary gearset, each of the second plurality of shift elements being movable between a released state and an applied state to selectively engage the third planetary gearset. The transmission also has a controller operably associated with the first plurality of shift elements and the second plurality of shift elements to selectively engage the first, second and third planetary gearsets.

Six-speed transmission

A pressure-relieving valve is connected to relieve air pressure from an internal diameter of a transmission pump. On startup, pressurized oil is delivered to the torque converter. At engine idle speed, the centrifugal effects on the oil cause any air (which may have leaked into the torque converter during the shut-down time) to accumulate at the center of the converter. Air pressure output from a torque converter escapes between the housing and the transmission pump to which it is connected. The escaped air reaches the internal diameter of the pump and it is prevented from blowing across the face of the pump to the suction side of the pump by a ball and check valve arrangement which delivers the air to a non-fluid internal part of a transmission, thereby avoiding the leakage of this air to the suction side of the pump and the possible loss of pump prime.

Ball check air vent for transmission pump

A solenoid assembly for an automatic transmission of a motor vehicle. The solenoid assembly includes a housing, a valve, an armature and an electromagnetic device. The valve is mounted within the housing. The valve is operative in a vented state and a non-vented state and includes a plunger and ball combination movable between a first position for establishing the vented state and a second position for establishing the non-vented state. The armature is associated with the valve and is movable in response to the presence and absence of a magnetic field for selectively moving the plunger and ball combination between the first and second positions. The electromagnetic device is operative for creating the magnetic field. The electromagnetic device includes a core and an energizable coil. The core has an upwardly extending outer post with a generally rectangular cross section in a horizontal plane. The energizable coil defines an opening for receiving the first upwardly extending outer post. The core preferably includes a plurality of vertically stacked plates.

Solenoid assembly for an automatic transmission of a motor vehicle

A manual valve arrangement is provided for an automatic transmission which provides for uninterrupted friction element control even though manual valve porting is being switched. An extra multi-select solenoid combined with porting through the manual valve and dual acting ball check assemblies permits selected friction elements to be controlled from two solenoids simultaneously. The extra multi-select solenoid, which is a normally-open solenoid valve, permits an energy savings logic mode in which the a normally-closed solenoid valve can be de-energized. Output from the extra multi-select solenoid is switched to different clutch elements when the manual valve is moved from the reverse position to the drive position and from the drive position to the second position.

Hydraulic control system for automatic transmission with energy saving

A solenoid assembly for an automatic transmission of a motor vehicle. The solenoid assembly includes a housing having a core opening passing vertically therethrough. A valve is mounted within the housing. The valve is operative in a vented state and a non-vented state. The valve includes a plunger movable between a first position for establishing the vented state and a second position for establishing the non-vented state. An armature is associated with the valve and is movable in response to the presence and absence of a magnetic field for selectively moving the plunger between the first and second positions. An electromagnetic arrangement for creating the magnetic field includes a core and an energizable coil. The core is inserted into the core opening from an underside of the housing. A first retaining member retains a portion of the core against the underside of the housing. A variable transducer is used to establish a reference plane including two upper surfaces of the coil. The transducer is used to adjust the armature relative to an associated valve such that a predetermined air gap is established between one of the upper surfaces of the coil and the armature.

Solenoid assembly for an automatic transmission of a motor vehicle and

An automatic transmission hydraulic control system is provided with lubrication and cooler circuits fed in parallel. The lubrication circuit is fed by regulated pressure which prevents lubrication starvation concerns under extremes of temperature and speed conditions. As the lubrication demand increases the controlled pressure increases the lube flow to meet the component lubrication requirements.

Automatic transmission hydraulic control system with parallel

A method of filling a transmission with oil is provided. The method compensates for temperature variations of the oil initially put into the transmission prior to a final top off oil fill.

Temperature compensated assembly plant oil fill

Reciprocating valves in a fluid system of a four-speed automatic transmission having grooves that collect and shed dirt and other contaminants which may inhibit the operation of the valves.

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Macomb, MI, United States of America

Charles J Redinger