Dana Italia S.r.l.

Giacomo Faggiani

Pier Paolo Rinaldi

Mario Gelmini

Mark Slater

Mirko Brentari

Sara Gennari

Davide Carpi

Methods and systems for a transmission. In one example, the transmission system includes a first electric motor that is rotationally coupled to a first shaft with a first gear idly mounted thereto and a second electric motor that is rotationally coupled to a second shaft with a second gear idly mounted thereto. The transmission system further includes an intermediate shaft with a third gear fixedly coupled thereto, a first clutch configured to selectively rotationally couple the first gear and the first shaft, and a second clutch configured to selectively rotationally couple the second gear and the second shaft.

System and method for shifting in a dual motor transmission

Methods and systems for a dual motor transmission system that includes an intermediate shaft oriented parallel to both of a first shaft arranged with a first gear mesh, a third gear mesh, and a first low friction engaging device located between the first gear mesh and the third gear mesh and a second shaft arranged with a second gear mesh, a fourth gear mesh, and a second low friction engaging device located between the second gear mesh and the fourth gear mesh, a first electric motor coupled to the first shaft to enable a first reduction ratio and second reduction ratio of the first electric motor between the first shaft and the intermediate shaft, and a second electric motor coupled to the second shaft to enable a first reduction ratio and second reduction ratio of the second electric motor between the second shaft and the intermediate shaft.

System and method for seamless shifting in a dual motor transmission with minimal gears

A method for controlling an engagement of a dog clutch in an electrified drivetrain, comprising: locking a shaft of a transmission; positioning an actuator of the transmission at a prescribed position; commanding an electric machine to rotate at a speed; and updating the engagement threshold position when the electric machine stalls based on the prescribed position of actuator.

Automatic backlash-compensation for a dog clutch in an electrified transmission

A stand-alone block, comprising: a hydraulic cylinder and one or more valves, wherein one or more adduction lines between the valve and the hydraulic cylinder are configured to allow the hydraulic cylinder to be self-purging. The hydraulic cylinder drives and guides a hollow piston, wherein a pass-through hole of the piston is configured to host a rod axially aligned with respect to a centerline of the hollow piston, wherein the hollow piston has a radial clearance formed between an inner surface of the hollow piston and the rod.

Stand-alone, self-purging, hollow-piston hydraulic actuator

Methods and systems for a hydromechanical transmission are provided. In one example, the method includes responsive to rotation of a portion of a mechanical assembly induced by cranking of an engine, blocking an output shaft of the hydromechanical transmission via joint engagement of a forward drive clutch and a reverse drive clutch. The method further includes pressurizing a hydrostatic assembly while the forward drive clutch and the reverse drive clutch remain jointly engaged, where the mechanical assembly is coupled in parallel with the hydrostatic assembly.

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Rovereto, Italy

Giacomo Faggiani