Eaton Cummins Automated Transmission Technologies, LLC

Eaton Corporation

Adam Christopher Maurer

Graeme Andrew Jackson

Robert J Kanda

Jerry J Brittan

Thomas Connolly

Melissa Mei Koenig

Ian Daniel McKenzie

Christopher Deboer

Sipei Chen

Matthew Richard Busdiecker

Jeff Hawarden

Joseph Paul Furner

Justin Keith Griffiths

Yeidei Wang

William Andrew David

Darren Firth

Sujay Kawale

Ryan Pauls

Carl Christopher Smith

Christian Thomas Chimner

Paul R Peterson

Timothy Scott Smith

David L Wadas

Paul Wilson

Andrzej Wota

Troy Scott Reinoehl

James Lee Whitaker

Clinton Lee McClellan

Benjamin S Sheen

Steven Michael Peterson

Carlos H Wink

Kevin McGovern

Paige Elizabeth Fernald

A transmission capable of being assembled as a coolerless transmission and a transmission having an oil cooler includes a housing and a lubrication system. The oil passage system includes an oil passage having an oil outlet opening extending out of the housing and an oil inlet opening extending into the housing. A bypass flow passage is disposed in the housing in communication with the oil outlet opening and the oil inlet opening. In a coolerless configuration a pair of plugs are inserted in the oil outlet opening and the oil inlet opening, respectively, to close off the oil outlet opening and the oil inlet opening so that oil flows from the oil outlet opening to the oil inlet opening through the bypass flow passage. In a transmission configuration having an oil cooler, an exterior oil cooler is connected to the oil outlet opening and the oil inlet opening.

Automotive transmission with heat exchanger bypass cartridge

A transmission is subject to thermal management to prevent damage or failure due to overheating. Sensors can be employed to capture characteristics of a transmission, such as fluid temperature or pressure. Further, a predictive model can be invoked to predict characteristics based on current and future conditions. Characteristics can be compared with a threshold for intervention. A thermal mitigation strategy can be generated and initiated when characteristics satisfy the threshold. The thermal mitigation strategy can specify various actions to dissipate heat, including altering shift control logic and triggering mechanical devices that can increase airflow, reduce air temperature, or both surrounding the transmission.

Thermal management of a vehicle transmission

A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. An integrated actuator housing includes a single external power access for the shift actuator. A controller interprets a shaft displacement angle, determines if the transmission is in an imminent zero or zero torque region, and performs a transmission operation in response to the transmission in the imminent zero or zero torque region.

High efficiency, high output transmission

A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. A controller controls the shift actuator utilizing an actuating pulse and an opposing pulse.

System, method, and apparatus for operating a high efficiency, high output transmission

According to an embodiment, a valve assembly is provided for use with a fluid system for controlling flow rate to a fluid circuit for cooling and/or lubricating a clutch assembly in a transmission. The spool valve has a first outlet and a second outlet in fluid communication with the fluid circuit. The spool valve has a first configuration with zero flow to the fluid circuit, a second configuration providing a first flow to the fluid circuit through the first outlet, and a third configuration providing a second flow to the fluid circuit through the first and second outlets. The first outlet has a metering orifice. The flow across the valve is a function of the stroke distance of the spool.

Clutch spool valve assembly

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

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Portage, MI, United States of America

Adam Christopher Maurer