Eaton Corporation

John Dresden, Iii

Thomas A Genise

Ronald K Markyvech

Richard A Nellums

John E Stainton

Simon Hornby

Thomas A Gee

Joseph B Dierker, Jr

William R Pankratz

A system and method for decreasing the time required to complete a ratio change in an electronically enhanced powertrain system is provided. The powertrain system includes a number of devices for providing a retarding torque to engine rotation to increase the decay rate of the engine speed during an upshift. These devices include an engine brake and an input shaft brake. A retarding torque is also provided by increasing engine accessory load by controlling various engine accessories such as a cooling fan, an air compressor, a hydraulic pump, an air conditioning compressor, and an alternator.

System and method for decreasing ratio changing time in electronically enhanced powertrain systems

System and method for decreasing ratio changing time by actuating

A control for a vehicular automated transmission system (10) is provided with a sensor (40) for sensing a suspension system (42) condition parameter indicative of vehicle loading and includes a controller (20) utilizing logic rules for controlling the transmission system as a function thereof.

Start ratio selection for vehicular automated transmissions

System and method for decreasing ratio changing time in electronically

An auxiliary transmission section (14) shift control system (230)/method is provided which includes a control member (234) to prevent auxiliary section synchronized clutch (92, 128) damage if the main transmission section (12) is engaged during an auxiliary section shift. Upon sensing main section engagement during a shift into the auxiliary section high-speed ratio, the force used to engage the high speed ratio is reduced from a first to a considerably lower second level by reducing the pressurization of the actuating pressurized fluid. To accomplish this, a dual pressure pressure regulator assembly (234) is utilized.

Dual pressure pressure regulator

Sensors (170, 172) for sensing articulation angle (AA) and/or a time derivative thereof (dAA/dt, d.sup.2 AA/dt.sup.2) for a trailer anti-swing control system are provided. In the preferred embodiments, at least the active transducers of the sensors are mounted to the tractor (12) subvehicle of the articulated vehicle system (10).

Articulation angle sensor

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Farmington Hills, MI, United States of America

John Dresden, Iii