Borgwarner Inc.

Eaton Corporation

Melissa Mei Koenig

Mark Buchanan

William Vukovich

R Keith Martin

Xiaoning Xiang

John M Kremer

Russell Lemon

Brian K Stefina

Christopher E Blair

Robert J Kanda

Adam Christopher Maurer

Jerry J Brittan

Darren Firth

Darren L Firth

Christophe Laurent

Karl-Heinz Bauer

Keith V Feldt

David C Mills

Alexander Moser

Eric Christopher Sandstrom

Graham M Annear

Michael Jung

Christopher Vangorder

Guenter Ebinger

Artur Wirch

Christopher S Vangorder

Christophe A Laurent

Mark R Buchanan

A line pressure valve includes a valve housing having a central cavity and a plurality of inlet and outlet ports, and a spool positioned within the central cavity and axially displaceable therein, the spool having a plurality of radial cutouts that fluidly connect respective inlet and outlet ports based on an axial position of the spool with respect to the valve housing. First and second pumps are fluidly connectable and disconnectable respectively to and from the fluid circuit based on the axial position of the spool via the inlet and outlet ports.

Line pressure valve to selectively control distribution of pressurized fluid

Disclosed is an exemplary hydraulic system including a first fluid circuit and a second fluid circuit. The hydraulic system further includes a first pump fluidly connected to the first fluid circuit and fluidly connectable to the second fluid circuit, and a second pump fluidly connectable to the first and second fluid circuits. The hydraulic system includes a first valve that may be arranged in a first position for fluidly disconnecting the first and second pumps from the second fluid circuit, a second position for fluidly connecting the second pump to the second fluid circuit and fluidly disconnecting the first pump from the second fluid circuit, and a third position for fluidly connecting the first and second pumps to the second fluid circuit.

Hydraulic distribution system employing dual pumps

A dual clutch transmission () having a plurality of forward gears and at least one reverse gear () where the first gear is operatively engaged by a one-way clutch (). A pair of actuator control valves () is employed to move actuators to engage selective ones of the forward gear sets. A multiplex valve () is disposed in fluid communication between the pair of actuator control valves () and the actuators associated with the forward gears of the transmission and is adapted to selectively provide fluid communication to the actuators to thereby select the forward gear ratios. A manual valve () is operatively connected to the gear shift selector () to control the actuator associated with reverse gear ().

Dual clutch transmission having simplified controls

An automatic transmission having high pressure actuation and low pressure lube includes a hydraulic circuit () having a source of pressurized fluid (), an actuation circuit () that delivers pressurized fluid to actuate components of the transmission, and a cooling circuit () used to cool components of the transmission. The source of pressurized fluid includes a motor, a first pumpoperatively driven by the motor, and a second pumpselectively driven by motor. A clutch mechanismis connected between the motorand the second pumpso as to selectively engage and disengage the second pumpin driven relationship with the motorso that the second pumpselectively supplies pressurized fluid to the cooling circuitwhen the clutch mechanismis engaged.

Automatic transmission having high pressure actuation and low pressure lube hydraulic circuit

A dual clutch transmission having a hydraulic circuit for controlling and cooling the clutches of a dual clutch transmission having lube valves in fluid communication with a source of pressurized fluid and wherein the cooling flow is controlled by a solenoid which is adapted to move a valve member to produce a flow area through the valve that is an inverse function of the current delivered to the solenoid and so as to deliver a predetermined control solenoid pressure ultimately to each of the clutches of a dual clutch transmission.

Dual clutch transmission having area controlled clutch cooling circuit

A control system is provided for a multiple clutch transmission () having at least three synchronizers () with opposed acting alpha and beta pressure chambers () to selectively synchronize alpha or beta gears with a rotating shaft. The control system includes a pressure source (), a sump (), a first multiplex valve () having a first position allowing fluid communication of alpha and beta chambers for two synchronizers () with the pressure source () and diverting alpha and beta pressure chambers () of remaining synchronizers () to sump (). The first multiplex valve () has a second position reversing the above action. A second multiplex valve () connected with the first multiplex valve () having a first position connecting alpha and beta chambers () of a given synchronizer with the pressure source () and alpha and beta chambers () of the other synchronizer with the sump (). The second multiplex valve () has a second position reversing the action. A first regulator valve () is connected with the second multiplex valve () for selectively connecting the alpha chamber () with one of a set of the pressure source () and the sump (). A second regulator valve is provided connected with the second multiplex valve () for selectively connecting the beta chamber () with one of a set of the pressure source () and the (sump).

Hydraulic actuation valve arrangement for dual clutch transmission

An automatic transmission for a hybrid vehicle includes a hydraulic circuit () having a source of pressurized fluid (), an actuation circuit () that delivers pressurized fluid to actuate components of the transmission, and a cooling circuit () used to cool components of the transmission. The source of pressurized fluid includes a first pump () that is operatively driven by the internal combustion engine of the hybrid vehicle and a second pump () that is operatively driven by the electric motor (). The second pump () acts to supply pressurized fluid to the cooling circuit () when the first pump () is operatively driven by the internal combustion engine under certain predetermined conditions.

Automatic transmission for a hybrid vehicle

A software calibration strategy for calibrating solenoid controlled valves and valve systems in an automatic transmission. The strategy includes identifying a characteristic equation for the valve or valve system that is a mathematical relationship between a current applied to the solenoid and the pressure at the output of the valve or valve system. The valve or valve system is coupled to a test stand that depicts the operation of the valve or valve system in the transmission. Current signals are applied to the valve or valve system, and the output pressures are measured to determine coefficients in the equation using a curve fitting function. The coefficients are then stored in a control unit.

Concept for using software/electronics to calibrate the control system for an automatic transmission

An automatic transmission having at least one hydraulic valve with flow force compensation. The hydraulic valve includes a valve body having a valve bore and at least one inlet and at least one outlet adapted to provide fluid communication with a source of pressurized hydraulic fluid and a return to the source of pressure. A valve member is slidingly disposed within the valve body that includes at least one valve element having an outer diameter and a metering face. The metering face is adapted to control the flow of pressurized hydraulic fluid between the inlet and the outlet of the valve body. The metering face includes a flow force compensating annular void disposed adjacent to the outer diameter that is defined by a lead angle &#x3b1; measured between the outer surface and a line intersecting the outer surface and tangential to the annular void.

Automatic transmission having hydraulic valves with flow force compensation

Calibration data transfer systems are described for use in conjunction with, for example, automotive components such as but not limited to transmission systems. The systems employ devices, such as but not limited to barcode systems such as 2D barcodes, radio frequency identification devices (RFID), digital data storage systems such as CD-ROM's, and the like, to record and/or store data thereon. The data can include information, such as but not limited to solenoid calibration curve coefficients and the like. The data contained on these devices can be accessed by a data retrieval system, such as a scanner, and transferred, for example, to a transmission control unit.

Method of calibration data transfer

An autonomous solenoid controller which in its broad aspect includes a microprocessor, a communication bus, and a solenoid driver. The microprocessor includes logic in order to control drivers for at least one solenoid. The communications bus is operably connected to the microprocessor so that the communications bus and the microprocessor communicate with one another. The communication bus communicates with an outside transmission control unit. The solenoid driver is electrically connected between the microprocessor and the solenoid, such that the microprocessor commands the solenoid driver to alter the position of the solenoid.

Solenoid controller

An automatic transmission having a pressure regulator with flow force compensation. The pressure regulator includes a valve body having a valve bore and at least one inlet and at least one outlet adapted to provide fluid communication with a source of pressurized hydraulic fluid and a return to the source of pressure. A valve member is slidingly disposed within the valve body that includes at least one valve element having an outer diameter and a metering face. The metering face is adapted to control the flow of pressurized hydraulic fluid between the inlet and the outlet of the valve body. The metering face includes a flow force compensating annular void disposed adjacent to the outer diameter that is defined by a lead angle &#x3b1; measured between the outer surface and a line intersecting the outer surface and tangential to the annular void.

Automatic transmission having a pressure regulator with flow force compensation

A hydraulic circuit for controlling the application of pressurized cooling fluid to the clutches of a dual clutch transmission including a cooling unit in fluid communication with a source of the pressurized cooling fluid and adapted to exchange heat from the cooling fluid with another media. The circuit also includes at least one regulator in fluid communication with the source of the pressurized cooling fluid and separately in fluid communication with the cooling unit, and with the clutches. The regulator is adapted to operatively provide the cooling fluid to the clutches. The circuit further includes at least one control actuator adapted to selectively control the regulator to provide a first variable predetermined amount of cooling fluid from the cooling unit to the clutches as primary cooling, and to provide a second variable predetermined amount of cooling fluid from the source to the clutches thereby supplementing the cooling fluid from the cooling unit.

Dual clutch transmission clutch cooling circuit

A dual clutch transmission for a motor vehicle having a synchronizer actuation interlock system includes two input shafts, a counter shaft, and a plurality of gear sets rotatively disposed on the shafts. The gear sets are adapted to be operatively engaged to and disengaged from their respective shafts. A plurality of synchronizers are disposed about the gear sets and the synchronizers are adapted to operatively engage and disengage the gear sets to and from their respective shafts. A plurality of hydraulically actuated shift actuators are each operatively connected to one of the plurality of synchronizers. Each shift actuator is adapted to cause its respective synchronizer to engage and disengage its respective gear sets to and from their respective shaft and further adapted to provide a hydraulic interlock that prevents an associated shift actuator on the same shaft from hydraulically actuating when the shift actuator is already engaged.

Dual clutch transmission having a synchronizer actuation interlock circuit

A bi-directional overrunning clutch assembly employed in connection with a reduced capacity low friction clutch to provide low and reverse gears in a transmission. The clutch assembly including an inner race, an outer race, and engagement members supported therebetween. The inner race is operatively coupled to the transmission casing and the outer race is operatively coupled to the ring gear of the gear set as well as the inner race of the friction clutch assembly. The clutch assembly further includes at least one actuating cam. The actuating cam operates to actuate the engagement members to provide four separate modes of operation between the inner and outer races of the clutch assembly. More specifically, the cam is operable to (1) disengage the engagement members to provide freewheeling between the inner and outer races in both rotational directions; (2) to actuate engagement members so that torque is translated in one rotational direction but to allow freewheeling in the opposite rotational direction; (3) to actuate the engagement members so that torque is translated in a direction opposite to that in mode (2) above, but allow freewheeling in the rotational direction opposite to that in which torque is translated in this mode; and (4) to actuate the engagement members so that the inner and outer races are locked relative to each other and torque is translated in both rotational directions.

Growing community of inventors

Howell, MI, United States of America

Melissa Mei Koenig